165 results on '"mites"'
Search Results
2. Occurrence of the mite Acanthonyssus proechimys (Mesostigmata: Macronyssidae) on a spiny rat in Brazil
- Author
-
Ricardo BASSINI-SILVA, Fernando de Castro JACINAVICIUS, Ana Carolina CASTRO-SANTIAGO, Ashley P.G. DOWLING, Marcos Rogerio ANDRÉ, Pedro M. LINARDI, and Darci Moraes BARROS-BATTESTI
- Subjects
mites ,ectoparasites ,Proechimys ,new record ,Science (General) ,Q1-390 - Abstract
ABSTRACT Macronyssid mites are ectoparasites of terrestrial vertebrates. We slide-mounted and re-examined mite material collected in a 1987-1989 expedition to Maracá Ecological Station, Roraima State, Brazil. The specimens were identified as Acanthonyssus proechimys Yunker and Saunders (Mesostigmata: Macronyssidae), which were collected parasitizing a South American spiny rat, Proechimys sp. This represents the first record of Acanthonyssus in Brazil.
- Published
- 2022
- Full Text
- View/download PDF
3. Case report: Parasitism of Ornithonyssus bursa (Macronyssidae) in humans in the Taquari River Valley region, southern Brazil
- Author
-
Aline Marjana Pavan, Darliane Evangelho-Silva, Luiz Liberato Costa-Correa, and Noeli Juarez Ferla
- Subjects
bites ,birds ,dermatitis ,mites ,Biology (General) ,QH301-705.5 - Abstract
Ornithonyssus bursa hematophagous mite whose main host is wild and domestic birds, which can temporarily parasitize humans in the absence of the main host. Infestations occur when birds abandon nests or direct contact with infected birds. The specimens were collected in a house in the urban area, with the help of a paper towel and kept under low refrigeration for later identification. The mites were identified as O. bursa, considered an important poultry pest. The present report is the first case of hematophagous parasitism in humans in the region of Vale do Taquari, Rio Grande do Sul, Brazil.
- Published
- 2022
- Full Text
- View/download PDF
4. Arthropod Pest Management Practices of Strawberry Growers in Florida: A Survey of the 2019-2020 Field Season
- Author
-
Sriyanka Lahiri
- Subjects
thrips ,mites ,biological control ,strawberry ,Agriculture (General) ,S1-972 ,Plant culture ,SB1-1110 ,Biology (General) ,QH301-705.5 - Abstract
This publication is aimed at growers, Extension agents, industry partners, and the general public who have an interest in integrated pest management (IPM) tools used by growers in general and strawberry growers in particular. The purpose is to establish a baseline of adopted IPM practices by the strawberry industry in Florida so that changes in behavior can be tracked in future. To document the current pest management practices, an in-person survey of 24 strawberry growers in Hillsborough Co., FL was conducted (IRB# 201902072) during the field season of 2019-2020. The survey showed that 70% of strawberry growers spray their crop more than 5 times in a season with an insecticide/miticide. But strawberry growers have developed an awareness of IPM tools available to them and are already using these tools such as releasing biological control agents for mite management, cover cropping, and considering planting banker (flowering) crops in designated spaces in and around their fields.
- Published
- 2023
- Full Text
- View/download PDF
5. The Citrus Red Mite (Panonychus citri): A Pest of Citrus Crops
- Author
-
Emilie Demard and Jawwad A. Qureshi
- Subjects
Mites ,Biological Control ,Citrus ,Integrated Pest Management ,Agriculture (General) ,S1-972 ,Plant culture ,SB1-1110 ,Biology (General) ,QH301-705.5 - Abstract
Panonychus citri is a phytophagous mite of economic importance in open citrus orchards and a major pest in Citrus Under Protective Screen (CUPS), a new undercover production system tested in Florida. Immatures and adults feed on citrus leaves, fruits, and green twigs resulting in mesophyll collapse, shoot dieback, and fruit drop. In Florida, P. citri occurs throughout the year but is most abundant in spring or early summer and autumn or early winter. Although chemical sprays like Abamectin or Fenbutatin oxide provide some control of P. citri, resistance has been reported in different regions of the world. Several predatory insects and mites have been shown to attack the mite and could be potential natural enemies to use in biological control programs.
- Published
- 2022
- Full Text
- View/download PDF
6. Raillietia auris (Mesostigmata: Raillietiidae) in cattle in the state of Mato Grosso do Sul, Brazil
- Author
-
Fernanda Paula Veloso, Fernando de Souza Rodrigues, Renata Cunha Madureira, Eliane Mattos Piranda, Luiz Eduardo Roland Tavares, and Fernando Paiva
- Subjects
Bovine otitis ,Raillietia auris ,prevalence ,mites ,Animal culture ,SF1-1100 - Abstract
Abstract Parasitic otitis in cattle, caused by mites, has been reported from several continents. The present study aimed to determine the distribution, prevalence, intensity, mean intensity, and range of the agent in cattle in the state of Mato Grosso do Sul, Brazil. The samples were designed at random, with an acceptable margin of error of 3% and a confidence interval of 99%. A total of 449 animals were sampled immediately after slaughter from 34 different municipalities in the state using the technique of flushing both ear canals. Only Raillietia auris (Leidy, 1872) were found, with a prevalence of 98.6%, mean intensity of 53.78 mites/animal, and a range of 1-323. Impressively, the prevalence found was identical to another survey carried out 39 years ago in the same region. Details about the parasite intensity in different age categories of the animals are presented. The study demonstrates that the prevalence and intensity of infestation by Raillietia auris are high, and in older cattle are higher than young ones.
- Published
- 2022
- Full Text
- View/download PDF
7. The role of Demodex folliculorum in pathogenesis of rosacea
- Author
-
Małgorzata Wieteska, Dominik Maj, Adrianna Gorecka, Anna Gorajek, Monika Wacławska, and Aleksandra Chałupnik
- Subjects
Rosacea ,Demodex folliculorum ,relationship ,mites ,treatment ,Education ,Sports ,GV557-1198.995 ,Medicine - Abstract
Introduction and objective: Rosacea is a common chronic inflammatory disease that affects approximately 10% of the population globally. The exact pathogenesis of rosacea remains unknown. However, there are considered several factors such as genetic predisposition, environmental impact, immune dysregulation, as well as presence of microorganisms. The aim of the study is to review recent knowledge about the relationship between rosacea and Demodex folliculorum. The information used in the presented analysis was obtained by searching academic research databases: Google Scholar and PubMed. An abbreviated description of the state of knowledge: Demodex folliculorum is a microscopic mite that resides in the hair follicles and sebaceous glands of the skin. Current studies show that Demodex folliculorum plays an important role in pathogenesis of rosacea. That is related with the induction of excessive pro-inflammatory skin response combined with increase in inflammation mediators. Moreover in patients with rosacea there is observed a nearly 6-fold increase in Demodex folliculorum density in comparison to general population. Increased number of mites is associated with local immunosuppression that may predispose to the development of rosacea. The presence of Demodex mites is related not only with acute course and prolonged duration of the disease, but also with higher probability of recurrence. Summary: Demodex folliculorum is involved in the pathogenesis of rosacea. Moreover, as a parasite, it significantly decreases the quality of patient’s life. Therefore, patients with severe rosacea should be examined for the presence of Demodex mites. In case of detection, regardless of its quantitative load, antiparasitic drug should be recommended.
- Published
- 2022
- Full Text
- View/download PDF
8. Entomology Beginners
- Subjects
entomology ,insects ,mites ,Zoology ,QL1-991 - Published
- 2022
9. Diagnosis of allergic sensitization in patients with allergic rhinitis and asthma in a tropical environment
- Author
-
Mario Sánchez-Borges, Arnaldo Capriles-Hulett, Joselit Torres, Ignacio Javier Ansotegui-Zubeldia, Adriana Castillo, Ariadne Dhersy, and Xiomara Monzón
- Subjects
allergic rhinitis ,asthma ,molecular diagnosis ,mites ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Background: Few studies in tropical developing countries have utilized molecular diagnosis to characterize allergen-specific responses to aeroallergens. Objective: To investigate the in vivo and in vitro responses of IgE antibodies to inhalant allergens in allergic patients with rhinitis and/or asthma. Methods: A prospective study in which patients with allergic rhinitis and/or asthma were included. Skin prick tests with 16 inhalant extracts of allergens were carried out and total and specific IgE levels for allergens and their molecular components in the serum were determined. Results: In a total of 189 patients, 73.5% showed high levels of total IgE in the serum. The prick tests were positive for the following allergens: Dust mite extracts; more than 60 %, cat; 29.6 %, dog; 23.4 %, and Periplaneta Americana; 21.6 %. Specific IgE for Dermatophagoides farinae and Pteronyssinus was present in 66.6 % of the patients; for Blomia tropicalis; in 45.0 %, for Ascaris lumbricoides; in 24.7 %, for cat; in 17.3 %, for parrot feathers; in 14.8 %, and for Penicillium notatum; in 12.3 %. IgE antibodies to mite allergens of group 1 and 2 were present in 59.0 % and 70.1 % of the sera; 39.1 % contained IgE to rBlo t5, 30.4 %contained rBla g4, 19.9 % contained rFel d1, 11.8 % contained rArt v3, 11.2 % contained Der p10, 9.9 % contained rBla g2, 9.3 % contained rPer a7, 9.3 % contained nFel d2, and 8.7 % contained rCan f1. Conclusions: This study confirms that mites are the main sensitizing agents in patients with respiratory allergic diseases in a tropical environment. There was a good correlation between the results of the skin tests and the results of the in vitro tests.
- Published
- 2019
- Full Text
- View/download PDF
10. Sensitization to environmental mites and fungi in pediatric patients with asthma and allergic rhinitis
- Author
-
Lourdes Leonor Bermudez-Cordoví, José Ramón Martínez-Pérez, Yaima Reyes-González, and Mayelín Escalona-Lallana
- Subjects
allergens ,hypersensitivity ,mites ,fungi ,asthma ,rhinitis, allergic ,Medicine ,Medicine (General) ,R5-920 - Abstract
Background: the correct diagnosis on what the allergens that sensitize the patient are makes it possible to establish an adequate management of the disease, avoiding the contact of patients with these allergens and establishing a more precise desensitizing therapy.Objective: to determine the sensitization to environmental mites and fungi in pediatric patients with asthma and allergic rhinitis treated at the allergy department of the "Romárico Oro" University Polyclinic of Puerto Padre, Las Tunas, during the period 2016 to 2020.Methods: an observational, descriptive, cross-sectional study was carried out with 165 patients between the ages of 5 and 18 years, and with a diagnosis of bronchial asthma and/or allergic rhinitis, at the aforementioned institution and during the period herein declared. Each patient underwent the prick skin test, using allergenic extracts from three mites and three environmental fungi. Simple descriptive statistical tests were used and the t-Student and chi-square tests were used for the comparison of variables.Results: in 73,3 % of the patients the skin test was positive for at least one of the allergens used; male patients and those with a family history of allergic disease predominated; mites showed higher prevalence of sensitization than that found among environmental fungi; Blomia tropicalis mite presented the highest prevalence of sensitization with 53,72 % and was responsible for a skin response of greater intensity.Conclusions: sensitization to environmental mites and fungi was determined in the studied sample of pediatric patients with asthma and allergic rhinitis.
- Published
- 2021
11. Galling Damage to Woody Ornamentals: Diagnosis and Potential Causes
- Author
-
Adam Dale, Erin Harlow, Carrie Harmon, and Chris Marble
- Subjects
Galling ,Witch's broom ,Mites ,Herbicide ,Plant pathogen ,Agriculture (General) ,S1-972 ,Plant culture ,SB1-1110 ,Biology (General) ,QH301-705.5 - Abstract
Galling or witch’s broom damage on the newly expanding buds and leaves of woody ornamental plants has become increasingly common. Diagnosing this damage can be difficult because the most common causes are obscure or occur well before damage symptoms appear. This -page fact sheet written by and published by the UF/IFAS is intended to help landscape managers, nursery growers, and pest control professionals diagnose characteristic galling damage, mitigate damage that occurs, and, when possible, prevent it from occurring.
- Published
- 2021
12. Cucumeris Mite (Suggested Common Name) Neoseiulus cucumeris (Oudemans) (Arachnida: Mesostigmata: Phytoseiidae)
- Author
-
Garima Kakkar, Vivek Kumar, Cindy McKenzie, and Lance S. Osborne
- Subjects
Acaro ,mites ,Agriculture (General) ,S1-972 ,Plant culture ,SB1-1110 ,Biology (General) ,QH301-705.5 - Abstract
Includes: Introduction - Synonymy - Distribution - Description and Biology - Host Range - Economic Importance - Selected References. Also available on the Featured Creatures website at http://entnemdept.ufl.edu/creatures/BENEFICIAL/Neoseiulus_cucumeris.htm
- Published
- 2020
13. Citrus Rust Mite Phyllocoptruta oleivora (Ashmead) (Arachnida: Acari: Eriophyidae)
- Author
-
Emilie Demard and Jawwad A Qureshi
- Subjects
Mites ,Integrated Pest Management ,Biological Control ,Citrus ,Florida ,Phyllocoptruta oleivora ,Agriculture (General) ,S1-972 ,Plant culture ,SB1-1110 ,Biology (General) ,QH301-705.5 - Abstract
The citrus rust mite, Phyllocoptruta oleivora (Ashmead), also called silver mite, is an important pest of citrus in most humid regions of the world (McCoy and Albrigo 1975, Vacante 2010) (Figure 1). It was first described in 1879 from Florida (Burditt et al. 1963). Phyllocoptruta oleivora is the most important mite pest of Florida citrus due to the cost of control and damage caused to fruits, particularly those for the fresh market (Knapp 1994, Hoy 2011). It coexists with another rust mite called the pink citrus rust mite, Aculops pelekassi (Keifer) (Childers and Achor 1999); however, Phyllocoptruta oleivora is usually the prevalent species. https://edis.ifas.ufl.edu/in1278
- Published
- 2020
14. Evaluación de la sensibilización a Der p 1 y Der p 2 en una población pediátrica del Norte de Portugal
- Author
-
Sara Peixoto, Joana Soares, Tânia Monteiro, Marisa Carvalho, Marinela Santos, Carla Simões, and Márcia Quaresma
- Subjects
Mites ,Dermatophagoides antigens ,Hypersensitivity ,Desensitization ,Immunologic ,Allergens ,Pediatrics ,RJ1-570 - Abstract
Resumen: Introducción: En Portugal los datos del papel de Der p 1 y Der p 2 en niños con alergia al ácaro del polvo son escasos. La inmunoterapia específica (IE) con alérgenos es el único tratamiento que mejora los síntomas, reduce la necesidad de terapia farmacológica y modifica la historia natural de la enfermedad. Con este trabajo, los autores estudian la epidemiología local y buscan aclarar si el análisis molecular de los alérgenos principales es una ventaja para decidir y/o modificar la decisión de iniciar IE en niños con indicación clínica y sensibilizados a Dermatophagoides pteronyssinus. Métodos: Estudio retrospectivo de los niños con asma y/o rinitis. Período de estudio: enero de 2013 a diciembre de 2016. Criterios de inclusión: 1) prick-test positivo a Dermatophagoides pteronyssinus; y 2) enfermedad clínicamente relevante bajo tratamiento. Los valores de Der p 1 y Der p 2 ≥ 0,35kUA/l fueron considerados positivos. La significación estadística se estableció en p
- Published
- 2018
- Full Text
- View/download PDF
15. Sensitization to 10 mites in a tropic area. Der p and Der f are important risk factor for sensitization to other mites from Pyroglyphidae, Acaridae, Chortoglyphidae, and Glyciphagidae families
- Author
-
Jorge Sánchez, Víctor Calvo, Andrés Sánchez, Susana Díez, and Ricardo Cardona
- Subjects
Atopy ,allergy ,Mites ,allergen ,network analysis ,sensitization. ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Background: Much is known about the frequency of sensitization to Blomia tropicalis, Dermatophagoides pteronyssinus and Dermatophagoides farinae, although less is known about sensitization to other species and their possible interactions. Objective: In patients with allergic manifestations, to evaluate the frequency of sensitization to 10 species of mites in a tropical area and their possible interactions. Methods: Cross-sectional study. Sensitization was evaluated by skin tests. A generalized linear Poisson regression model with robust variance was used. Based on the sensitization probability reasons and social networking analysis, explorations of relationship for 10 mites were performed. Results: 147 patients were included. The highest sensitization was found to mites' family Pyroglyphidae (> 70 %) and less frequently was the Glycyphagidae family (< 50 %). Sensitization to any mites significantly increased the likelihood of sensitization to others. Sensitization to Der f or Der p increased, more than 20 times the likelihood of sensitization to other mites of the Pyroglyphidae family and more than 10 times to mites from other families. Sensitization to mites from Glycyphagidae, Chortoglyphidae or Acaridae family also increased the risk of sensitization to other mites but less than 5 times. Conclusion: Sensitization to mites is frequent in tropical area. Pyroglyphidae sensitization is the main risk factor for polysensitization with other mites from Glycyphagidae, Chortoglyphidae or Acaridae. These results must be considered at diagnosis and treatment of allergy diseases.
- Published
- 2017
- Full Text
- View/download PDF
16. Scabies in Spain: Trends in Public Interest and Ectoparasiticide Use.
- Author
-
Fernández Camporro Á, Navarro Fernández Í, and Arcos González P
- Subjects
- Animals, Humans, Spain epidemiology, Sarcoptes scabiei, Scabies drug therapy, Scabies epidemiology
- Abstract
Scabies is an ectoparasitic dermatosis caused by the Sarcoptes scabiei var. hominis mite, which lives and reproduces in humans. Its incidence in Spain has increased in recent years. The aim of this study was to complement existing evidence on the increasing number of scabies cases in our country by analyzing changes in ectoparasiticide prescriptions and Internet searches for scabies infestations measured by Google Trends. We also examined correlations between these two variables. Our results show that public interest in scabies has increased in recent years and is positively and significantly correlated with an increasing use of ectoparasiticides. We believe that Google Trends should be considered as a complementary tool for monitoring real-time trends in scabies infestations in Spain., (Copyright © 2023 AEDV. Publicado por Elsevier España, S.L.U. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
17. Detección de ácaros en medios de cultivo, contaminantes que dejan senderos
- Author
-
Muñoz-Morales, Julieta Mariana, Luna-Pérez, Estephanie Elizabeth, and Morales-García, Yolanda Elizabeth
- Subjects
biological contaminants ,Mites ,fungi ,bacteria ,AyTBUAP ,contaminantes biológicos ,ácaros ,hongos ,bacterias - Abstract
RESUMEN Los contaminantes biológicos pueden ser un problema muy fuerte para el desarrollo del trabajo microbiológico. Los contaminantes biológicos son persistentes y aparecen en las placas de cultivo de rutina afectando a los resultados. En este trabajo se muestra como los ácaros pueden ser una fuente de contaminación sobre las placas de cultivo, cuya característica a simple vista, es que dejan senderos formados de colonias microbianas visibles y no inoculadas por el humano. ABSTRACT Biological contaminants can be a very strong problem for the development of microbiological work. Biological contaminants are persistent and show up on routine culture plates affecting results. This work shows how mites can be a source of contamination on culture plates, whose characteristic at first glance is that they leave trails made up of visible microbial colonies and not inoculated by humans., {"references":["Barua Stock IM, Sarmiento M, Parra González Y, Benítez Rodas GA, Arce C, Fernández Rios D, et al. Presencia de Contaminantes Microbiológicos en Batas de Laboratorio de Técnicos de un Centro de Investigación [Internet]. Vol. 12, Reportes científicos de la FACEN. scielo; 2021. p. 96–103. Available from: http://scielo.iics.una.py/scielo.php?script=sci_arttext&pid=S2222-145X2021000200096","Vázquez Macías AC, Domenech Cañete IO, Ayala Rodríguez I, Martínez Motas I. Riesgo biológico en los laboratorios de Microbiología de las instituciones de salud. Panorama Cuba y Salud [Internet]. 2019;14(1(37)):65–70. Available from: https://revpanorama.sld.cu/index.php/panorama/article/view/854","Abatenh E, Gizaw B, Tsegaye Z. Contamination in a Microbiological Laboratory. Int J Res [Internet]. 2018;6:7–13. Available from: https://www.semanticscholar.org/paper/Contamination-in-a-Microbiological-Laboratory-Abatenh-Gizaw/896ebb793df7d0d5789f6a14c758d3a6ff34d84b","Murillo Rojas P, Aguilar Piedra H. Principales ácaros encontrados en laboratorios comerciales de cultivo de tejidos vegetales y su asociación con hongos en el Valle Central de Costa Rica. Agron Costarric [Internet]. 2021 Feb 3;45(1 SE-Artículos):41–52. Available from: https://revistas.ucr.ac.cr/index.php/agrocost/article/view/45679","Sosa-Sánchez O, Romero-Bastidas M, Silva-Pupo JJ, Gaibor-Fernández RR, Rodríguez-Rodríguez SF, Ceiro-Catasú WG. Caracterización cultural-morfométrica como herramienta para la identificación de Fusarium spp., asociado a Nicotiana tabacum L. Agron Costarric [Internet]. 2022 Apr 9;46(1):111–28. Available from: https://www.redalyc.org/articulo.oa?id=43673743007","XU Wei LUO Xin, SUN En-tao, ZHAO Jin-hong ZHUZ. Morphological and molecular characterization of mite Tyrophagus putrescentiae [Internet]. Vol. 38, CHINESE JOURNAL OF PARASITOLOGY AND PARASITIC DISEASES. 2020. p. 95–101. Available from: http://www.jsczz.cn","Abundes-Arteaga LF, Castañeda-Ramírez GS, López-Guillén, Guillermo, Aguilar-Marcelino L. Ciclo de vida y Caracterización morfológica del ácaro Tyrophagus putrescentiae (Schrank) (ASTIGMATA: ACARIDAE) como agente potencial de biocontrol de nemátodos parásitos de ovinos. Entomol Vet [Internet]. 2020;7:420–4. Available from: http://acaentmex.org/entomologia/revista/2020/EV/Em EV 420-424.pdf","Botero G. L. Laboratorio: Observación de algunos hongos ambientales. Actual Biológicas [Internet]. 2018 Jan 25;3(10 SE-Artículos completos):87–93. Available from: https://revistas.udea.edu.co/index.php/actbio/article/view/330688","Pérez TM, Guzmán-Cornejo C, Montiel-Parra G, Paredes-León R, Rivas G. Biodiversidad de ácaros en México. Rev Mex Biodivers [Internet]. 2014;85:S399–407. Available from: https://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1870-34532014000200048","Pérez H, Sánchez VL. Propuesta de diseño de monitoreo ambiental microbiológico para diagnóstico de niveles de contaminación en áreas de procesamiento aséptico. ICIDCA Sobre los Deriv la Caña Azúcar [Internet]. 2010 Apr 9;44(3):7–14. Available from: https://www.redalyc.org/articulo.oa?id=223120684002","University-of-Cambridge. Mites and how to avoid them [Internet]. Departnent of Genetics. [cited 2023 Mar 31]. Available from: https://www.flyfacility.gen.cam.ac.uk/Flylab/mites","Muñoz-Rojas J, Morales-García YE. Editorial 7(26) AyTBUAP. Patentes como motor del desarrollo de una sociedad. El caso de las universidades de Puebla, México. Alianzas y Tendencias BUAP [Internet]. 2022;7(26):i–vii. Available from: https://www.aytbuap.mx/aytbuap-726","Bustillos-Cristales M del R, Pazos-Rojas LA, Muñoz-Rojas J, Morales-García YE. Actividades de la APCM en 2022 y visibilidad de sus conferencias; un quehacer que tiene que ser reforzado. In: Rivera-Urbalejo AP, editor. Asociación Poblana de Ciencias Microbiológicas [Internet]. Puebla, México: APCM; 2022. p. 1–14. Available from: https://sites.google.com/view/apcmac/2022-conferencias-conferences","Soto-Balcazar RF, Figueroa-Alfaro G, Cruz-Pérez GA, Leal-Rojas JV. Vigilancia tecnológica estratégica: análisis patentométrico y bibliométrico de inoculantes bacterianos. Alianzas y Tendencias BUAP [Internet]. 2023;8(29):1–13. Available from: https://www.aytbuap.mx/aytbuap-829/vigilancia-tecnológica-estratégica-análisis-patentométrico-y-bibliométrico","López Luna JE, Magaña Sánchez PA, Naranjo González M de J, Silva Peña E. Influencia de la educación financiera en alumnos de nivel licenciatura. Alianzas y Tendencias BUAP [Internet]. 2023;8(29):14–24. Available from: https://www.aytbuap.mx/aytbuap-829/influencia-de-la-educación-financiera-en-alumnos-de-nivel-licenciatura","López Custodio JM, Pérez Villalón GF, Durán Zavala AL. La gestión estratégica de recursos humanos aliada de las tecnologías informáticas: revisión sistemática de literatura. Alianzas y Tendencias BUAP [Internet]. 2023;8(29):25–41. Available from: https://www.aytbuap.mx/aytbuap-829/la-gestión-estratégica-de-recursos-humanos-aliada-de-las-tecnologías"]}
- Published
- 2023
- Full Text
- View/download PDF
18. Effect of soil use on their quality, in areas of the farm 'Baños de Marrero'
- Author
-
Edith Aguila Alcantara, Yasser Marrero Pérez, Héctor Pablo Hernández Arboláez, and Yanetsy Ruiz González
- Subjects
mites ,springtails ,soil mesofauna ,Inceptisol ,land use ,Agriculture (General) ,S1-972 ,Plant ecology ,QK900-989 - Abstract
Two areas (a natural and an agricultural ecosystem), located on brown calcareous soil (correlated to Order Inceptisol, Subgroup Mollic Eutrudept in the Soil Taxonomy system), were chosen with the aim of assessing the effect of agricultural land use on soil quality using the compared scenarios perspective. The physical indicators analyzed were aggregate stabled, permeability coefficient, the factor of structure, lower and upper limits of plasticity, as well as, the index of plasticity. The chemical indicators measured were pH (H2O), pH (KCl), organic matter content, and levels of P2O5 and K2O. Soil microbiology was analyzed by plate counting. For mesofauna extraction was used the funnel methodology of Berlese-Tullgren. Data processing was done using STATGRAPHICS vs 5.0 on Windows 7. The results demonstrated that the physical status of the soil was good in both ecosystems. Significant differences were found for pH, organic matter content, levels of P2O5 and K2O, and in the microbial population. However, no differences were found in mesofauna components; but, the principal components analyses showed that the differentiation between both ecosystems is more defined by the mesofauna and microbiological indicators.
- Published
- 2016
19. Basic studies of Neoseiulus californicus (McGregor) (Phytoseiidae) potential control agent of Oligonychus yothersi (McGregor) (Tetranychidae) in Persea americana Mill. hass variety
- Author
-
Lagos Alvarez, Yorley Beatriz, Mesa Cobo, Nora Cristina, and García Valencia, Yeimy
- Subjects
Control biológico ,Aguacate ,Mites ,Neoseiulus californicus ,Predatory mites ,Biological control ,Ácaros depredadores ,Persea americana ,Oligonychus yothersi ,632 - Lesiones, enfermedades, plagas vegetales [630 - Agricultura y tecnologías relacionadas] ,Avocados ,Ácaro ,Ácaros - Abstract
La producción de aguacate ha incrementado a nivel mundial debido a la alta demanda que actualmente esta fruta tiene, gracias a su agradable sabor, textura cremosa y su excelente composición nutricional. No obstante, al igual que otros cultivos, su producción se ve afectada por el ataque de diferentes insectos y ácaros. Dentro de los ácaros asociados al cultivo se destaca la familia Tetranychidae, en especial, la especie Oligonychus yothersi, la cual es la de mayor importancia para los productores de aguacate Hass en Colombia. Su daño está relacionado con su alimentación ya que se alimenta sobre el haz de las hojas y ocasiona un aspecto bronceado sobre el tejido y a su vez, como daño secundario la producción se ve afectada. Su manejo, por lo general, se hace con productos de síntesis química, sin embargo, se están explorando alternativas de control biológico del ácaro con el fin de disminuir costos de producción, reducir las aplicaciones de químicos y con ello contribuir a ofrecer al mercado una fruta más limpia. Por tales motivos el objetivo de esta investigación fue evaluar los parámetros de la tabla de vida del ácaro depredador N. californicus al ser alimentado con O. yothersi en aguacate Hass. La investigación se realizó en el laboratorio de Entomología y Acarología de la Universidad Nacional de Colombia sede Palmira en condiciones de 26 ± 3°C y 56 ± 3% HR. La especie N. californicus presentó un tiempo de desarrollo de huevo a adulto de 5 días en aguacate Hass, con un porcentaje de sobrevivencia del 96%. La tasa neta de reproducción (Ro) fue de 9,7 individuos hembra/generación, la tasa intrínseca decrecimiento natural (rm) 0,20, la tasa finita de multiplicación (λ) 1,2 días, el tiempo generacional (T) fue de 10.9 días y el tiempo de duplicación (Td) fue de 3.3 días. Estos hallazgos confirman que N. californicus puede completar su desarrollo satisfactoriamente alimentándose de O. yothersi en aguacate Hass. Palabras clave: Persea americana; Oligonychus yothersi; Neoseiulus californicus; ácaros. (Texto tomado de la fuente) Avocado production has increased worldwide due to the high demand for this fruit, thanks to its pleasant flavor, creamy texture and excellent nutritional composition. However, like other crops, its production is affected by the attack of different insects and mites. Among the mites associated with the crop, the Tetranychidae family stands out, especially the species Oligonychus yothersi, which is the most important for Hass avocado growers in Colombia. Its damage is related to its feeding, since it feeds on the leaves and causes a bronzed appearance on the tissue, and in turn, as secondary damage, production is affected. Its management is usually done with chemical synthesis products; however, biological control alternatives of the mite are being explored in order to reduce production costs, reduce chemical applications and thus contribute to offer a cleaner fruit to the market. For these reasons, the objective of this research is to evaluate the life table parameters of the predatory mite N. californicus when fed with O. yothersi on Hass avocado. The research was carried out in the Entomology and Acarology laboratory of the National University of Colombia, Palmira, in conditions of 26 ± 3°C and 56 ± 3% RH. N. californicus presented a time from egg to adult of 5 days in Hass avocado, with a high survival rate of 96%. The net reproductive rate (R0) was 9.7 female individuals/generation, the intrinsic rate of natural decrease (rm) 0.20, the finite multiplication rate (λ) 1.2 days, the generation time (T) was 10.9 days and the doubling time (Td) was 3.3 days. These findings confirm that N. californicus can successfully complete its development by feeding on O. yothersi on Hass avocado Maestría Maestría en Ciencias Agrarias Se siguió la metodología descrita por García (2019), en la cual se lavaron las hojas de aguacate para retirar el polvo, antes de trasladar las hembras de O. yothersi, evitando así que ácaros de otras especies e insectos estuvieran presentes. Posteriormente, las hojas se secaron con papel toalla y se colocaron sobre una espuma saturada de agua, dentro de una caja de Petri. Los bordes de las hojas se rodearon con algodón húmedo para evitar el escape de los ácaros (figura 1a), y con la ayuda de un pincel se procedió a transferir las hembras de O. yothersi para que iniciaran a formar sus colonias (figura 2a y 2b) Protección de cultivos Ciencias Agropecuarias.Sede Palmira
- Published
- 2023
20. Managing Insecticide and Miticide Resistance in Florida Landscapes
- Author
-
Nicole Benda and Adam G. Dale
- Subjects
Insects ,mites ,pesticide resistance ,lawn ,turfgrass ,ornamental plants ,Agriculture (General) ,S1-972 ,Plant culture ,SB1-1110 ,Biology (General) ,QH301-705.5 - Abstract
Resistance to insecticide or miticide is a worry for landscape managers. Around the world, chinch bugs, leafminers, and other insect and mite pests have become resistant to dozens of insecticides, but with diligent insecticide resistance management, we can still maintain long-term effective chemical control. With few new modes of action coming onto the market, landscape managers need to be good stewards of existing products. Ultimately, resistance management means reducing exposure of pests to any one pesticide. Fortunately, there are many ways to prevent resistance and still control pests of ornamental plants and lawns, and this 6-page fact sheet written by Nicole Benda and Adam Dale and published by the UF/IFAS Entomology and Nematology Department explains how. http://edis.ifas.ufl.edu/in714
- Published
- 2018
21. [Variabilidad del patrón de sensibilidad alérgica en adultos mayores].
- Author
-
Velásquez-Rodríguez JM and Pavón-Romero GF
- Subjects
- Young Adult, Humans, Female, Animals, Dogs, Aged, Middle Aged, Male, Allergens, Skin Tests, Asthma, Rhinitis, Allergic, Mites
- Abstract
Objective: Describe the pattern of allergic sensitivity in elderly., Methods: Elderly (>60 years old) with a diagnosis of allergic respiratory disease in whom sensitivity was identified by pricking with ALK-abello extracts (Port Washington, NY, United States) were included. The results were analyzed using descriptive statistics and compared with a series of young adults in a 3:1 ratio. Association analyzes were performed with c2 test using SPSSv.21 software (SPSS software, IBM, NY, USA)., Results: 17 elderlies, predominantly women were identified (70%) with an average age of 64 years, 52% suffered from asthma and 47% allergic rhinitis, 82% were predominantly intradomiciliary polysensitive (82%), the most frequent being Dermatophagoides pteronyssinus (50%), decreasing to < 18% (p<0.01) to various species (Ligustrum vulgare, Salsola kali, Periplaneta americana, Canis familiaris, Juniperus sp and Fraxinus sp). Interestingly, AM were more sensitive to mites compared to young adults (p<0.01/OR= 8.92). This may be because the reactivity of the skin may decrease with age., Conclusions: The main allergic sensitivity that can be identified by conventional techniques in elderly is Dermatophagoides pteronyssinusm, up to 50%., (Este obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial 4.0 Internacional.)
- Published
- 2023
- Full Text
- View/download PDF
22. Edaphic arthropods in different land use forms at Sierra Nevada, Tepetlaoxtoc, Estado de México, Mexico
- Author
-
Arturo Hernández-Tirado, Gabriela Castaño-Meneses, Abel Ibáñez-Huerta, David Eleazaer Ramos-Chávez, Lizeth Aguirre-Plata, Daniela Pérez-Velázquez, Saraí Montes-Recinas, and Rocío Cruz-Ortega
- Subjects
índice QBS-ar ,mites ,QBS-ar index ,Insect Science ,minería pétrea ,Bioindicators ,Collembola ,bioindicadores ,stone mining ,Ácaros - Abstract
Resumen Este estudio tuvo como objetivo describir la diversidad y abundancia de los micro artrópodos edáficos, en relación con las características físicas y químicas de suelos bajo diferente uso y manejo, así como caracterizar su estructura en un área de minería pétrea o de cantera. Para esto se estudiaron los ensamblajes de microartrópodos edáficos en cinco zonas con diferente uso de suelo: Bosque de Pino-Encino conservado (B), Bosque de Pino-Encino degradado (Z), Agrícola (V), Erosión (E), y Mina (M), en Sierra Nevada (Tepetlaoxtoc, México), su relación con parámetros físicos y químicos del suelo y su potencial como bioindicadores, utilizando los valores del índice QBS-ar, en zonas de minería pétrea. Se encontró correlación positiva y significativa con la abundancia y los porcentajes de humedad y materia orgánica del suelo. Se identificaron grupos descritos como bioindicadores, hiperparasitoides y depredadores en sitios más conservados que los que presentan mayor degradación. Los valores del índice QBS-ar fueron mayores en el área B. Se identificaron tres zonas, B, M y E, definidas por su aptitud para realizar acciones de rehabilitación ecológica y el potencial de los microartrópodos para ser integrados en los programas de manejo y estrategias de conservación y rehabilitación en áreas de minería pétrea. Abstract The objective of this study was to describe the diversity and abundance of edaphic microarthropods in relation to the physical and chemical characteristics of soils under different use and management and to characterize their structure in an area of stone mining or quarrying. For this purpose, edaphic microarthopods assemblages were studied in five zones with different land use: Conserved Pine-Oak forest (B), Degraded Pine-Oak forest (Z), Agricultural (V), Erosion (E), Mine (M), in Sierra Nevada (Tepetlaoxtoc, Mexico), in order to know their relationship with both physical and chemical parameters, and also their potential as bioindicators, using the values of the QBS-ar index, in stony mining areas. A positive and significant relationship was found with the abundance and moisture and organic matter percentages. Groups described as bioindicators, hyperparasitoids and predators were identified in sites with more conservation than those with greater degradation. The QBS-ar index values were higher in the area B. Three zones, B, M and E, were identified, according by their suitability for ecological rehabilitation action. The potential of soil microarthropods to be integrated into management programs and conservation and rehabilitation strategies in areas of stone mining was recognized.
- Published
- 2022
23. Il mito garibaldino nell’orbita del Fascismo
- Author
-
Fabrizio Soriano
- Subjects
feixisme ,antifeixisme ,garibaldinisme ,mites ,tradicions ,religió política ,History (General) and history of Europe ,History of Spain ,DP1-402 - Abstract
El text analitza l’apropiació del garibaldinisme, amb els seus valors de tradició i de mite, pel feixisme que se’n proclamà hereu i continuador. En aquest sentit, es subratlla com el feixisme incorpora en la seva ideologia i en la seva praxi tot element de la història i de la identitat nacional, ara actualitzats en el culte al feix. El feixisme presumí de personificar el mite garibaldí i intentà ajustar-ho a la moderna política de massa, aconseguint també que alguns descendents de Garibaldi s’apropessin al règim. El text posa en relleu que la incorporació del garibaldinisme al feixisme fou possible també per la seva mateixa naturalesa de sentiment passional i que aquesta mateixa interpretació fou compartida també pels sectors antifeixistes
- Published
- 2016
24. Algo más que plantas: la fauna del suelo es increíblemente abundante y diversa en la Font Roja, y responde principalmente a la materia orgánica del suelo
- Author
-
Soliveres, Santiago, Morales Márquez, Jimmy, Pastor Llorca, Estrella, Lopezosa, Paula, Garrapiso Amorós, Alba, Romero Fornés, Francisco José, Martínez Giménez, Delfina, Martínez Tormo, Adrián, Bonet, Andreu, Universidad de Alicante. Departamento de Ecología, Universidad de Alicante. Instituto Multidisciplinar para el Estudio del Medio 'Ramón Margalef', Gestión de Ecosistemas y de la Biodiversidad (GEB), and Ecología Experimental de Zonas Áridas (DRYEX)
- Subjects
Matollar ,Mesofauna ,Mites ,Col·lèmbols ,Matorral ,Quercus rotundifolia ,Àcars ,Colémbolos ,Shrubland ,Springtails ,Ácaros - Abstract
Los organismos del suelo son una gran proporción de la biodiversidad, pero sabemos muy poco de ellos. Analizamos la fauna del suelo, y su respuesta al tamaño y calidad de sus hábitats. En sólo 48 muestras encontramos 96 familias de artrópodos, casi las mismas que de plantas en todo el P.N. Font Roja. La mayoría de estos organismos son colémbolos y ácaros, cuya riqueza y abundancia aumenta junto con la materia orgánica del suelo. Els organismes que viuen al sòl suposen una gran proporció de la biodiversitat, però no sabem massa sobre ells. Analitzem la fauna del sòl i la seua resposta a la mida i qualitat del seu habitat. En sòls 48 mostres hi trobem 96 famílies d’artròpodes, quasi tantes com famílies de plantes hi trobem a tot el P.N. Font Roja. La major part d´aquests organismes són col·lèmbols i àcars, I l’abundància i diversitat d´aquests organismes augmenta amb el contingut de carboni al sòl. Soil-associated organisms contribute a big proportion of global biodiversity, yet we know little about them. We analysed the soil fauna and its response to the size and quality of the habitat they inhabit. In only 48 samples we found 96 arthropod families, almost as many as plant families to be found in the entire protected area. Soil fauna was dominated by springtails and mites, with their abundance and diversity increasing with soil organic matter content. Esta investigación ha sido financiada por el Ministerio de Ciencia, Innovación y Universidades, del Gobierno de España, mediante el proyecto I+D+i «Retos investigación» del programa estatal de I+D+i orientada a los retos de la sociedad “Identificando las consecuencias funcionales de cambios en la biodiversidad a varias escalas espaciales” (FOBIASS; RTI2018-098895-a-i00) y la ayuda Ramón y Cajal (RyC-2016-20604).
- Published
- 2022
25. Leaf domatia morphology of Miconia sellowiana Naudin (Melastomataceae)
- Author
-
Alline Flores de Brito, Maria Regina Boeger, Letícia Larcher de Carvalho, and Renato Goldenberg
- Subjects
Anatomy of domatia ,Melastomataceae ,Mites ,Science ,Biology (General) ,QH301-705.5 - Abstract
Domatia are small cavities that shelter and provide an adequate physical microenvironment for arthropods, and are often found on leaves. Besides their ecological importance, few studies have described the structure of domatia. Miconia sellowiana has domatia on the abaxial surface of its leaves, and previous studies indicate that environmental factors influence the leaf morphology of this species. The goal of this study was to analyze the domatia morphology of M. sellowiana and to describe the environmental factors that possibly influence these structures. Leaves from two different vegetation types, grassland and Araucaria forest, were collected. Domatia thickness, area and dry weight, and leaf thickness were analyzed. The leaves have only one type of domatium, located on the abaxial surface of the leaf base. The anatomical structure of the domatia is less complex than the leaf blade, with a homogeneous mesophyll and without stomata. These features suggest that the photosynthetic capacity of the domatia is lower than the remaining part of the leaf blade. The only morphological variation of the domatia from the two areas was in size, with larger domatia in the grassland leaves. This might indicate the influence of environmental factors on the selection of host mites.
- Published
- 2012
26. Parasites of the Green-backed Firecrown (Sephanoides sephaniodes) in Chile Parásitos del picaflor chico (Sephanoides sephaniodes) en Chile
- Author
-
Daniel González-Acuña, Carolina Silva, Marta Soto, Sergei Mironov, Lucila Moreno, Paulina L. González-Gómez, Hasan Badrul, and Mike Kinsella
- Subjects
aves ,ácaros ,helmintos ,trematodos ,cestodos ,Chile ,birds ,mites ,helminths ,trematodes ,cestodes ,Biology (General) ,QH301-705.5 - Abstract
Gastrointestinal and external parasites from 12 Green-backed Firecrown (Sephanoides sephaniodes) were collected between January 2004 and December 2008 from the Biobío Region south-central Chile and Santiago (central Chile). Helminths collected included 1 trematode species (Mosesia sp.) and 1 cestode species (Hymenolepis trinidadensis). The mite Proctophyllodes huitzilopchtlii was the only ectoparasite species found. All these parasites represent new records for Chile and the first parasites reported for this host species.Se recolectaron parásitos internos (gastrointestinales) y externos de 12 picaflores (Sephanoides sephaniodes) entre enero del 2004 y diciembre del 2008, de la región del Biobío en el centro-sur de Chile y en Santiago, en la región central de Chile. Los helmintos recolectados incluyeron 1 especie de trematodo (Mosesia sp.) y 1 de cestodo (Hymenolepis trinidadensis). Únicamente se encontró 1 especie de ectoparásito, el ácaro Proctophyllodes huitzilopchtlii. Todos los parásitos mencionados representan nuevos registros para Chile y se registran por primera vez para este hospedero.
- Published
- 2011
27. RODRIGUEZ BRANCHAT, Rosa, La construcció d’un mite. Cultura i franquisme a Eivissa, 1936-1975, Catarroja, Editorial Afers, 2014, 186 pp. | RODRIGUEZ BRANCHAT, Rosa, La construcció d’un mite. Cultura i franquisme a Eivissa, 1936-1975, Catarroja, Editorial Afers, 2014, 186 pp.
- Author
-
José Miguel Santacreu Soler
- Subjects
Mites ,Eivissa ,Franquisme ,Cultura ,Ressenyes bibliogràfiques ,History (General) and history of Europe - Published
- 2014
- Full Text
- View/download PDF
28. Composição acarina em diferentes cultivares de pessegueiros [Prunus persica (L.)], em Presidente Prudente, estado de São Paulo Mite diversity in peach cultivars [Prunus persica (L.)], in Presidente Prudente, State of São Paulo, Brazil
- Author
-
Sônia Maria Nalesso Marangoni Montes, Adalton Raga, Aparecida Conceição Boliani, Jeferson Luiz Carvalho Mineiro, and Pedro César dos Santos
- Subjects
Prunus persica ,ácaros ,ocorrência ,similaridade ,análise faunística ,mites ,occurrence ,similary ,faunistic analysis ,Plant culture ,SB1-1110 - Abstract
Objetivou-se, nesta pesquisa, estudar a ocorrência natural de ácaros fitófagos e predadores em diferentes cultivares de pessegueiro, no município de Presidente Prudente-SP, Brasil. O estudo foi realizado no período de dezembro de 2002 a fevereiro de 2006. Amostras quinzenais de 72 folhas foram coletadas ao acaso, de pessegueiros das cultivares Talismã, Doçura 2, Dourado 2, Tropical, Aurora 1 e Aurora 2. Coletou-se um total de 2.594 ácaros, sendo 2.092 fitófagos, 403 predadores e 99 de hábitos alimentares pouco conhecidos, com 35 espécies de ácaros de 16 famílias. Aculus fockeui ocorreu de maneira esporádica, não causando danos visíveis às plantas. A família Phytoseiidae apresentou a maior abundância e o maior número de indivíduos. O predador Euseius citrifolius foi o mais abundante. Não houve preferência dos ácaros nas cultivares de pessegueiro avaliadas.This study aimed to investigate the occurrence of phytophagous and predator mites in peach cultivars in Presidente Prudente municipality, State of São Paulo, Brazil. The survey was conducted from 2002 December to 2006 February. Leaf samples were collected fortnightly of 72 sheets of cultivars Talismã, Doçura 2, Dourado 2, Tropical, Aurora 1 and Aurora 2. It was recovered 2594 mites, among 2092 phytophagous, 403 predators and 99 of dietary habits few knowledge. It was collected 35 mite species belong to 16 families. Aculus fockeui occurred on a sporadic season, causing no visible damage to the plants. In the case of phytoseids, Euseius citrifolius was the most abundant predator species. No preference of mites was detected among the peach cultivars.
- Published
- 2010
29. Nutrientes afetando as mudas de alecrim-pimenta (Lippia sidoides Cham.) e seus artrópodes Nutrients affecting 'alecrim-pimenta' (Lippia sidoides Cham.) seedlings and their arthropods
- Author
-
F.W.S. Silva, G.L.D. Leite, R.E.M. Guanabens, E.R. Martins, A.L. Matioli, and L.A. Fernandes
- Subjects
plantas medicinais ,adubação ,insetos ,ácaros ,medicinal plants ,fertilization ,insects ,mites ,Pharmacy and materia medica ,RS1-441 ,Botany ,QK1-989 - Abstract
O objetivo deste trabalho foi avaliar o efeito da omissão de nutrientes nas mudas de Lippia sidoides Cham. (Verbenaceae) e seu possível efeito sobre os seus artrópodes, sendo os tratamentos: 1) testemunha; 2) completo 1 adubado com N, P, K, S, B, Cu, e Zn + calagem (C1); 3) completo 2: C1 sem calagem + Ca e Mg como sulfato (C2); 4) C1 sem calagem; 5) C1 sem N; 6) C1 sem P; 7) C1 sem K; 8) C1 sem S; 9) C1 sem B; 10) C1 sem Cu; 11) C1 sem Zn; 12) C2 sem Ca e 13) C2 sem Mg. O delineamento foi inteiramente casualizado com quatro repetições. O Tetranychus sp. (Acari: Tetranychidae) atacou mais os tratamentos 3, 6, 9 e 13 e os maiores danos nos tratamentos 6 e 13. A maior população de Aphis gossypii Glover (Homoptera: Aphididae) foi encontrada nos tratamentos 5, 6, 7, 8, 11 e 13, colonizando preferencialmente o tratamento 4. O Phenacoccus sp. (Hemiptera: Pseudococcidae) foi encontrado em maior número nos tratamentos 4 e 9 e Insignorthezia insignis (Browne) (Hemiptera: Ortheziidae) em 13. Foram mais notados adultos de Bemisa tabaci (Genn.) (Hemiptera: Aleyrodidae) nos tratamentos 5, 7, 8 e 13 e ninfas nos três últimos tratamentos. Em geral, os tratamentos 1, 5 e 10 são os menos atacados por artrópodes. Dirigir a pulverização, quando necessário, sempre para a face inferior da folha.The aim of this work was to evaluate nutrient omission effect on Lippia sidoides Cham. (Verbenacea) seedlings, as well as its possible effect on their arthropods. Treatments were: 1) control; 2) complete 1: fertilized with N, P, K, S, B, Cu, and Zn + lime (C1); 3) complete 2: C1 without lime + Ca and Mg as sulphate (C2); 4) C1 without lime; 5) C1 without N; 6) C1 without P; 7) C1 without K; 8) C1 without S; 9) C1 without B; 10) C1 without Cu; 11) C1 without Zn; 12) C2 without Ca; and 13) C2 without Mg. The experimental design was completely randomized, with four replicates. Tetranychus sp. (Acari: Tetranychidae) predominantly attacked treatments 3, 6, 9 and 13, and the greatest damages were detected in treatments 6 and 13. The largest population of Aphis gossypii Glover (Homoptera: Aphididae) was observed in treatments 5, 6, 7, 8, 11 and 13, preferentially colonizing treatment 4. Phenacoccus sp. (Hemiptera: Pseudococcidae) was predominant in treatments 4 and 9, and Insignorthezia insignis (Browne) (Hemiptera: Ortheziidae), in treatment 13. Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae) adults were mostly detected in treatments 5, 7, 8 and 13, whereas nymphs, in the last three treatments. In general, treatments 1, 5 and 10 are the least attacked by arthropods. When needed, pulverization must always be directed to the leaf lower surface.
- Published
- 2009
- Full Text
- View/download PDF
30. Ácaros asociados al coleóptero Passalus cognatus (Coleoptera: Passalidae) de Los Tuxtlas, Veracruz, México
- Author
-
Gabriel A Villegas-Guzmán, Tila M Pérez, and Pedro Reyes-Castillo
- Subjects
Passalus cognatus ,ácaros ,diversidad ,distribución ,México ,mites ,diversity ,distribution ,Mexico ,Biology (General) ,QH301-705.5 - Abstract
Se revisaron 35 ejemplares de Passalus cognatus Truqui recolectados en Los Tuxtlas, Veracruz, México. En 20 de ellos se encontraron 245 ácaros pertenecientes a ocho especies, ocho géneros, ocho familias y tres subórdenes. Las especies de acáros más abundantes fueron Uroobovella californiana Wisniewski y Hirschmann (35%), Euzercon hyatti Hunter y Rosario (20%) y Uropoda sp. (17.5%). Las zonas de fijación preferidas por los ácaros fueron las coxas; en menor proporción el mesoesternón y los húmeros. Los pasálidos infestados presentaron de 1 a 40 ácaros, con un promedio de 12. El número de especies de ácaros por pasálido infestado fue de 1 a 4.Mites associated to the Coleopteran Passalus cognatus (Coleoptera:Passalidae) from Los Tuxtlas, Veracruz, Mexico. There are few records of mites associated with the tropical coleopterans of Mexico. We examined 35 passalid beetles (bessbugs) Passalus cognatus from Los Tuxtlas region in Veracruz State, Mexico. Twenty of them had a total of 245 mites (representing eight species, eight genera, eight families and three suborders). The most abundant species were Uroobovella californiana Wisniewski & Hirschmann (35%), Euzercon hyatti Hunter & Rosario (20%), and Uropoda sp. (17.5%). The preferred attachment areas were the coxae; followed by the mesosternum and the humeri. Each beetle had 1 to 40 mites (average: 12); and we found 1-4 mite species per beetle. Rev. Biol. Trop. 56 (3): 1261-1268. Epub 2008 September 30.
- Published
- 2008
31. Infestação por Lynxacarus radovskyi (Tenorio, 1974) em gatos domésticos procedentes da região metropolitana do Recife, Pernambuco, Brasil Infestation by Lynxacarus radovskyi (Tenorio, 1974) in domestic cats from Metropolitan Region of Recife, Pernambuco, Brazil
- Author
-
Edenilze T. Romeiro, Leucio C. Alves, Ylka Maria V. Soares, Ulysses N. V. Matoso, and Maria Aparecida Da G. Faustino
- Subjects
Ectoparasitos ,gatos ,ácaros ,Ectoparasites ,cats ,mites ,Animal culture ,SF1-1100 - Abstract
Este estudo foi realizado com o objetivo de investigar a infestação por Lynxacarus radovskyi em gatos provenientes da Região Metropolitana de Recife, estado de Pernambuco, Brasil, durante o período de maio a dezembro de 2003. Foram coletadas amostras de pêlo de gatos de ambos os sexos e idades variadas, e submetidas a exame microscópico. Os resultados mostraram que 75,84% (254/335) dos animais estavam infestados com L radovskyi, não havendo, porém, diferença estatisticamente significativa entre a presença do ácaro e o sexo, a raça e a idade. Os resultados indicam que o ácaro L. radovskyi está disseminado na população felina estudada.This study was performed with the aim of to investigate the infestation by the cat fur-mite Lynxacarus radovskyi in cats from Recife Metropolitan Region, State of Pernambuco, Brazil, during the period of May through December of 2003. Hair samples were taken from cats of both sexes and different ages and submitted to microscopical examination. The results showed that 75.84% (254/335) of cats were infested with L. radovskyi, but statistically significant differences were not observed among the presence of mite and sex, race and age. The results indicate that the mite L. radovskyi is endemic in this population.
- Published
- 2007
- Full Text
- View/download PDF
32. Prevalencia y manejo integrado del ácaro Varroa destructor en colmenas de abejas africanizadas
- Author
-
Villegas Martínez, Xochitl Andrea, Fallas Matamoros, Natalia, and Umaña Rojas, Eduardo
- Subjects
MITES ,ABEJAS AFRICANIZADAS ,CONTROL DE PLAGAS ,COLMENAS ,AFRICANIZED BEES ,PEST CONTROL ,ÁCAROS ,VARROIDAE ,BEEHIVES - Abstract
Clasificación 638.156542 V734p En este estudio se determinó la prevalencia y se evaluó la efectividad del ácido oxálico en el control del ácaro Varroa destructor en colmenas de abejas africanizadas durante el periodo de marzo a julio 2021. La prevalencia del ácaro varroa se determinó en apiarios del Centro de Investigaciones Apícolas Tropicales (CINAT) ubicados en Atenas, Alajuela y en colmenas de apicultores de otras zonas apícolas de Costa Rica, como Orotina, Miramar y Jicaral. Mientras que la efectividad del ácido oxálico en el manejo integrado de V. destructor se llevó a cabo en un apiario constituido por 16 colmenas, localizado en Atenas, Alajuela. El apiario se dividió en 4 grupos seleccionados al azar (A, B, C, D) de 4 colmenas cada uno. El grupo A fue tratado mediante goteo con 35 g de ácido oxálico, el grupo B recibió 100 g de ácido oxálico en goteo, mientras que en el grupo C se utilizaron toallas con glicerina impregnadas con 12 g de ácido oxálico. El grupo D correspondió al testigo, al cual no se le aplicó ácido oxálico. Para colectar los ácaros, se colocó una trampa en el fondo de cada colmena. Al final de los tratamientos, se aplicaron 2 tiras de formamidina para eliminar los ácaros remanentes y determinar la efectividad de los productos. Asimismo, se realizaron observaciones, tanto de la cría como de las abejas adultas, para identificar posibles efectos adversos del ácido oxálico sobre las colmenas. La mayor efectividad del ácido oxálico en el control del ácaro varroa, se determinó mediante goteo con 35 g, la cual correspondió a un 89%., La aplicación de 100 g de ácido oxálico en goteo mostró una efectividad del 67%, en tanto, la aplicación de ácido oxálico mediante toalla con glicerina obtuvo un 61% de efectividad. Se debe resaltar, que el grupo testigo, mostró una alta mortalidad natural de ácaros. No se observaron, efectos adversos del ácido oxálico sobre las colmenas. En conclusión, el ácido oxálico mostró una efectividad de moderada a alta en el control del ácaro V. destructor en colmenas de abejas africanizadas bajo condiciones tropicales. El método de goteo, resultó más efectivo que el de toalla, sin embargo, requiere más visitas al apiario. Mientras que el método de tolla, necesita de una sola aplicación en las colmenas. Por lo anterior, el ácido oxálico puede ser considerado como una alternativa viable, en el manejo integrado del ácaro varroa en nuestras condiciones. In this study the prevalence was determined and the effectiveness of oxalic acid in the control of the Varroa destructor mite in Africanized bee hives was evaluated during the period from March to July 2021. The prevalence of the varroa mite was determined in apiaries of the Beekeeping Research Center Tropicales (CINAT) located in Atenas, Alajuela and in beekeepers' hives in other beekeeping areas of Costa Rica, such as Orotina, Miramar and Jicaral. While the effectiveness of oxalic acid in the integrated management of V. destructor was carried out in an apiary made up of 16 hives, located in Atenas, Alajuela. The apiary was divided into 4 randomly selected groups (A, B, C, D) of 4 hives each. Group A was treated by dripping with 35 g of oxalic acid, group B received 100 g of oxalic acid in a drip, while in group C glycerin towels impregnated with 12 g of oxalic acid were used. Group D corresponded to the control, to which oxalic acid was not applied. To collect the mites, a trap was placed at the bottom of each hive. At the end of the treatments, 2 strips of formamidine were applied to eliminate the remaining mites and determine the effectiveness of the products. Likewise, observations were made, both of the brood and of the adult bees, to identify possible adverse effects of oxalic acid on the hives. The greater effectiveness of oxalic acid in the control of the varroa mite was determined by dripping with 35 g, which corresponded to 89%. The application of 100 g of oxalic acid in drip showed an effectiveness of 67%, while, the application of oxalic acid by means of a towel with glycerin obtained a 61% effectiveness. It should be noted that the control group showed a high natural mortality of mites. No adverse effects of oxalic acid on hives were observed. In conclusion, oxalic acid showed moderate to high effectiveness in controlling the V. destructor mite in Africanized bee hives under tropical conditions. The drip method was more effective than the towel method, however, it requires more visits to the apiary. While the tolla method, it needs a single application in the hives. Therefore, oxalic acid can be considered as a viable alternative in the integrated management of the varroa mite in our conditions. Universidad Nacional, Costa Rica Centro de Investigaciones Apícolas Tropicales
- Published
- 2021
33. Review of pests and diseases in forest nurseries in Costa Rica
- Author
-
Arguedas Gamboa, Marcela, Rodríguez-Solís, María, Cots Ibiza, Jaume, and Martínez Araya, Adrián
- Subjects
insectos ,diagnóstico fitosanitario ,mites ,Seedlings ,plantas ,patógenos ,pathogens ,ácaros ,insects ,phytosanitary diagnosis - Abstract
Resumen Los viveros forestales son los sitios de producción intensiva de las plantas para los programas de reforestación y arboricultura, las cuales deben ser de alta calidad y estar libres plagas y enfermedades. Se realizó una evaluación sanitaria en siete viveros forestales en Costa Rica, con el objetivo de elaborar el diagnóstico de problemas fitosanitarios. Se diagnosticaron 15 especies de insectos, 44 de patógenos y 5 de ácaros, en un total de 80 especies forestales bajo producción. En el ápice, los daños de mayor importancia son producidos por el barrenador Hypsipila grandella y el cortador Trigona sp. y como patógenos Botrytis sp., Cylindrocladium sp. y Phomopsis sp.; en el follaje por los insectos Eulepte concordalis y Dictyla monotropidia y Austropuccinia psidii, Colletotrichum spp., Dothistroma septosporum, Melampsoridium alni, Oidium sp., Olivea tectonae y Phyllachora balansae como patógenos. Se describen dichos problemas y se recomiendan para su control los principios y prácticas contempladas en el Manejo Integrado de Plagas (MIP). Abstract Forest nurseries are the sites of intensive plant production for reforestation and arboriculture programs, which must be of high quality and free from pests and diseases. A sanitary evaluation was carried out in seven forest nurseries in Costa Rica, to prepare the diagnosis of phytosanitary problems. 15 species of insects were diagnosed, 44 of pathogens and 5 of mites, in a total of 80 forest species under production. At the apex, the most important damages are caused by the borer Hypsipila grandella and the cutter Trigona sp. and as pathogens Botrytis sp., Cylindrocladium sp. and Phomopsis sp.; in the foliage, by the insects Eulepte concordalis, Dictyla monotropidia and Austropuccinia psidii, Colletotrichum spp., Dothistroma septosporum, Melampsoridium alni, Oidium sp., Olivea tectonae, and Phyllachora balansae as pathogens. These problems are described and the principles and practices contemplated in Integrated Pest Management (IPM) are recommended for their control.
- Published
- 2021
34. Macrocheles muscaedomesticae (Acari, Macrochelidae) and a species of Uroseius (Acari, Polyaspididae) phoretic on Musca domestica (Diptera, Muscidae): effects on dispersal and colonization of poultry manure
- Author
-
Tatyana Sacchi Carmona Rodrigueiro and Angelo Pires do Prado
- Subjects
Dispersal ,house flies ,mites ,phoresy ,poultry manure ,Zoology ,QL1-991 - Abstract
Differences in the phoresy of the mites Macrocheles muscaedomesticae (Scopoli, 1972) (Macrochelidae) and Uroseius sp. (Polyaspidae) on the house fly, Musca domestica (Linnaeus, 1758) and the similarities in their phoretic dispersal and parasitism are discussed, altogether with the effects on predator-prey interactions. The prevalence and intensity of phoresy in the mite species were significantly related to the attachment site on the hosts. The phoresy of Uroseius sp. was correlated with temperature but not with rainfall and relative humidity. Selective pressure in the environment resulted in displacement and the emergence of local and regional populations. These results suggest that in each habitat the populations will use different resources and will show several relationships with other species, as well as a selection for morphological and behavioral types.
- Published
- 2004
- Full Text
- View/download PDF
35. Controle de Brevipalpus phoenicis (Geijskes, 1939) E Oligonychus ilicis (McGregor, 1917) (Acari: Tenuipalpidae, Tetranychidae) em cafeeiro e o impacto sobre ácaros benéficos: I - abamectin e emamectin Control of Brevipalpus phoenicis (Geijskes, 1939) and Oligonychus ilicis (McGregor, 1917) (Acari: Tenuipalpidae, Tetranychidae) in coffee plants and the impact on beneficial mites: I - Abamectin and emamectin
- Author
-
Paulo Rebelles Reis, Marçal Pedro Neto, Renato André Franco, and Adenir Vieira Teodoro
- Subjects
Mancha-anular ,controle químico ,seletividade ,ácaro ,Coffea arabica ,Coffee ringspot virus ,chemical control ,selectivity ,mites ,Agriculture (General) ,S1-972 - Abstract
O ácaro Brevipalpus phoenicis (Geijskes, 1939) (Acari: Tenuipalpidae) é importante em cafeeiro (Coffea spp.), por ser o vetor do vírus da mancha-anular, responsável por queda de folhas e má qualidade da bebida do café, e o ácaro-vermelho, Oligonychus ilicis (McGregor, 1917) (Acari: Tetranychidae), por reduzir a área foliar de fotossíntese. Alguns ácaros da família Phytoseiidae são eficientes predadores associados aos ácaros-praga. Com este trabalho teve-se como objetivo estudar o controle dos ácaros-praga e o impacto do abamectin e emamectin sobre fitoseídeos. Em laboratório, foram estudados os efeitos ovicida, tópico, residual, tópico mais residual aos ácaros-praga e a seletividade fisiológica aos fitoseídeos. Em semicampo, foi estudada a persistência dos produtos no controle dos ácaros-praga. O efeito ovicida foi avaliado em ovos no início e fim de incubação; os efeitos residual, tópico e tópico mais residual foram avaliados pela mortalidade de larvas, ninfas e adultos após 48 horas da aplicação, enquanto a persistência foi avaliada pela mortalidade até 30 dias após a pulverização. A seletividade aos ácaros fitoseídeos foi avaliada pelo efeito total às fêmeas adultas, em teste residual em superfície de vidro. Pelos resultados, verificou-se que abamectin e emamectin não possuem ação ovicida, para ambas as espécies de ácaros-praga estudadas. Considerando o efeito tópico mais residual, o abamectin e emamectin foram altamente eficientes no controle de larvas, ninfas e adultos de B. phoenicis; apenas abamectin foi eficiente no controle de O. ilicis. Abamectin foi levemente a moderadamente nocivo e emamectin mostrou-se inócuo a levemente nocivo aos fitoseídeos. Devido à eficiência de controle e seletividade a fitoseídeos, conclui-se que abamectin e emamectin podem ser utilizados em programas de manejo integrado do ácaro B. phoenicis, e abamectin para o manejo de B. phoenicis e O. ilicis em cafeeiro.The mite Brevipalpus phoenicis (Geijskes, 1939) (Acari: Tenuipalpidae) is important for coffee plants (Coffea spp.) for being the vector of the coffee ringspot virus, which is responsible for leaf fall and bad quality of the coffee beverage. The red spider mite, Oligonychus ilicis (McGregor, 1917) (Acari: Tetranychidae) is also important, for reducing the areas of photosynthesis in leaves. Some mites of the family Phytoseiidae are efficient predators associated to the pest-mites. This work had as objective to study the control of the pest-mites and the impact of the abamectin and emamectin on phytoseiids. Studies were carried out in laboratory to investigate the ovicidal, topical, residual, topical plus residual effects of the products on the pest-mites and the physiologic selectivity to the phytoseiids. The persistence of the products in the control of pest-mite was studied in semi-field conditions. The ovicidal effect was evaluated in eggs in the beginning and end of incubation; the residual, topical and topical plus residual effects on larvae, nymphs and adults were assessed through mortality evaluation 48 h after spraying, while the persistence was evaluated until 30 days after spraying. The phytoseiids selectivity was evaluated by the total effect in adult females, in residual test in glass surface. The results showed that abamectin and emamectin do not possess ovicidal action, in both pest-mite species studied. Considering the topical plus residual effect, the abamectin and emamectin was highly efficient in the control of larvae, nymphs and adults of the B. phoenicis; only the abamectin was efficient for O. ilicis control. Abamectin was slightly and moderately noxious and emamectin was shown to be innocuous and slightly noxious to the phytoseiids. Due to efficiency presented in the pest-mites control, and selectivity to the phytoseiids, it is concluded that abamectin and emamectin can be used in integrated pest management programs of B. phoenicis, and abamectin for the management of B. phoenicis and O. ilicis in coffee trees.
- Published
- 2004
- Full Text
- View/download PDF
36. PREVALENCIA E INTENSIDAD DE ECTOPARASITOS ASOCIADOS A TADARIDA BRASILIENSIS (GEOFFROY SAINT-HILAIRE, 1824) (CHIROPTERA: MOLOSSIDAE) EN CONCEPCION PREVALENCE AND INTENSITY OF ECTOPARASITES ASSOCIATED TO TADARIDA BRASILIENSIS (GEOFFROY SAINT-HILAIRE, 1824) (CHIROPTERA: MOLOSSIDAE) IN CONCEPCION CITY
- Author
-
Lisandro Muñoz, Milenko Aguilera, and María E. Casanueva
- Subjects
Chiroptera ,Tadarida brasiliensis ,ectoparásito ,ácaros ,pulgas ,Chiroptonyssus robustipes ,mites ,fleas ,Ewingana inaequalis ,Oceanography ,GC1-1581 ,Zoology ,QL1-991 - Abstract
En este trabajo se presenta el estudio de la prevalencia e intensidad de artrópodos ectoparásitos recolectados en 90 ejemplares de Tadarida brasiliensis (Geoffroy Saint-Hilaire, 1824) capturados en la ciudad de Concepción, VIII Región-Chile (36°40'S; 73°04'O), desde noviembre del 2000 a marzo del 2001. Los ectoparásitos recolectados fueron una especie de pulga, Sternopsylla distincta (Rothschild, 1903), y tres especies de ácaros, Chiroptonyssus robustipes (Ewing, 1925), Ewingana inaequalis (Ewing, 1938) y Notoedres lasionycteris (Boyd & Bernstein, 1950). El 100% de los murciélagos se encontraron parasitados y se les extrajo un total de 3.185 ectoparásitos. C. robustipes fue la especie más común con un 100% de prevalencia, seguida de N. lasionycteris, E. inaequalis y S. distincta con prevalencias de 40, 32,24 y 8,89% respectivamente. También la intensidad de infestación promedio fue mucho mayor para C. robustipes con 34.25 ácaros/murciélago, comparado con las otras especies en que la intensidad fue menor al 2%. La prevalencia e intensidad de E. inaequalis y N. lasionycteris fue significativamente mayor en machos, mientras que para S. distincta sólo la prevalencia fue levemente mayor en hembras, con lo que se pudo concluir que la prevalencia e intensidad de ectoparásitos aparecen como dependiente del sexo del hospedero en algunas especies de ectoparásitosThe prevalence and intensity of arthropod ectoparasites collected from 90 specimens of Tadarida brasiliensis (Geoffroy Saint-Hilaire, 1824) captured in Concepción, VIII Región-Chile (36°40'S; 73°04'W) from November 2000 to March 2001 is presented. The ectoparasites collected were one species of flea, Sternopsylla distincta (Rothschild, 1903), and three species of mites, Chiroptonyssus robustipes (Ewing, 1925), Ewingana inaequalis (Ewing, 1938) and Notoedres lasionycteris (Boyd & Bernstein, 1950). The 100% of bats were parasited and 3,185 ectoparasites were collected. C. robustipes was the most common species with a 100% of prevalence. N. lasionycteris, E. inaequalis and S. distincta presented 40.0, 32.24 and 8.89% of prevalence respectively. The mean intensity of infestation was greater for C. robustipes with 34.25 mites/bats and in others species the intensity was a 2% lower. The prevalence and intensity of E. inaequalis and N. lasionycteris were significatively greater in males, while for S. distincta the prevalence was slightly greater only in females. The prevalence and intensity of some ectoparasites showed to be dependent on the host sex
- Published
- 2003
37. The phylogenetic relationship of Glyciphagidae, Pyroglyphidae, Chortoglyphidae and Acaridae mites families according to the sequence of their main allergens
- Author
-
Andrés, Sánchez, Jorge, Sánchez, Marlon, Munera, and Ricardo, Cardona
- Subjects
alergia ,lcsh:Immunologic diseases. Allergy ,Mites ,atopia ,Animals ,alérgeno ,ácaros ,Allergens ,sensibilización ,lcsh:RC581-607 ,Phylogeny - Abstract
Mites are the main cause of atopy and allergies in the Tropical region. It is necessary to know the phylogenetic relationship of their allergenic proteins in order to determine the best combination of extracts for its use at the clinic.To assess the phylogenetic relationship between the main allergenic proteins of mites.Groups 1, 2 and 5 of Glyciphagidae, Pyroglyphidae, Chortoglyphidae and Acaridae families were compared according to the sequence of mRNA and amino acids with the validated sequences of the National Center for Biotechnology Information and through bioinformatic alignment analyses for the construction of the trees, the method of neighbor-joining, with bootstrap support with 500 replications, was used as a measure of reliability and robustness.15% to 87% of identity was found in the three groups of allergens; the highest was between Der p2 and Der f2 (86.98%) and, the lowest, between Der f 5 and Gly d 5 (17.87%) Piroglyphidae showed the highest relationship between the species. The longest branching distance was identified in Glicyphagidae, especially in Blomia tropicalis.Some allergenic proteins have a high identity between the different species of mites, unlike Blomia tropicalis. These results can be taken into consideration when the diagnosis and treatment of allergic diseases is being defined.Antecedentes: Los ácaros son la principal causa de atopía y alergias en la región del trópico. Es necesario conocer la relación filogenética de sus proteínas alergénicas para determinar la mejor combinación de extractos para su empleo en la clínica. Objetivo: Evaluar la relación filogenética entre las principales proteínas alergénicas de los ácaros. Método: Se compararon los grupos 1, 2 y 5 de las familias Glyciphagidae, Pyroglyphidae, Chortoglyphidae y Acaridae de acuerdo con la secuencia de ARNm y aminoácidos con las secuencias validadas en el National Center for Biotechnology Information y mediante análisis bioinformáticos de alineamiento. Para la construcción de los árboles se utilizó el método de neighbor-joining, con soporte por bootstrap con 500 replicaciones como medida de fiabilidad y robustez. Resultados: Se encontró 15 a 87 % de identidad en los tres grupos de alérgenos; la más alta entre Der p 2 y Der f 2 (86.98 %) y la menor entre Der f 5 y Gly d 5 (17.87 %) Piroglyphidae presentó la mayor relación entre las especies. En Glicyphagidae, especialmente en Blomia tropicalis, se identificó la mayor distancia de ramificación. Conclusión: Algunas proteínas alergénicas tienen alta identidad entre las diferentes especies de ácaros, no así Blomia tropicalis. Estos resultados pueden considerarse al definir el diagnóstico y tratamiento de las enfermedades alérgicas.
- Published
- 2019
38. Relationship between the sensitization to shrimp and mites. Exploration of cross-reactivity due tropomyosin
- Author
-
Karen Estefanía, Hernández-Moreno, María, Muñoz, Víctor, Calvo, Libia Susana, Diez-Zuluaga, and Jorge, Sánchez
- Subjects
Male ,lcsh:Immunologic diseases. Allergy ,atopia ,animal structures ,rinitis ,Tropomyosin ,Cross Reactions ,Penaeidae ,immune system diseases ,reactividad cruzada ,Prevalence ,Animals ,Humans ,alergia alimentaria ,Shellfish ,Mites ,fungi ,ácaros ,Rhinitis, Allergic ,Asthma ,respiratory tract diseases ,tropomiosina ,asma ,Cross-Sectional Studies ,Female ,camarón ,lcsh:RC581-607 ,Food Hypersensitivity - Abstract
Little is known out the sensitization to shrimp in patients with respiratory allergies who are sensitized to mites and about the clinical relevance of that sensitization in the tropical region.To determine the prevalence of sensitization to shrimp in patients with rhinitis or asthma who are sensitized to mites, to explore the route of sensitization, its relevance, and the role of sensitization to tropomyosin.A cross-sectional study in patients with asthma and rhinitis who are sensitized to mites. Through a survey, it was asked about the consumption of shrimp and the control of asthma or rhinitis. Oral provocation tests were carried out with shrimp on individuals who are sensitized to mites and shrimp without consumption, or consumption greater than six months before, without reaction history. In a subgroup, the sIgE was measured for shrimp, Der p and Lit v 1. The patients who are sensitized to mites and shrimp (cases) were compared to the patients who are sensitized only to mites (controls).Out of 229 patients, 48 (21%) were sensitized to shrimp. There wasn't a statistically significant difference in the intake of shrimp between cases (54.2%) and controls (49.7%); eight cases showed symptoms on contact with shrimp. No statistically significant differences were found in the sIgE for Der p, Lit v1 and shrimp between cases and controls. A medium change was observed in the size of the effect: 0.45, 0.44 and 0.41 respectively.Sensitization to shrimp in patients with asthma or allergic rhinitis caused by mites is high; in 25% it seems to be clinically relevant, mainly in those with asthma. Intake is not the main route of exposure to tropomyosin; cross-reactivity can explain the frequency of sensitization.Antecedentes: Se conoce poco sobre la sensibilización a camarón en pacientes con alergias respiratorias sensibilizados a ácaros y la importancia clínica de dicha sensibilización en el trópico. Objetivos: Determinar la prevalencia de sensibilización a camarón en pacientes con rinitis o asma sensibilizados a ácaros, explorar la ruta de sensibilización, su relevancia y el papel de la sensibilización a tropomiosina. Métodos: Estudio de corte transversal en pacientes con asma y rinitis sensibilizados a ácaros. Mediante encuesta se indagó consumo de camarón y control del asma o rinitis. Se realizaron pruebas de provocación oral con camarón a los individuos sensibilizados a ácaros y camarón sin consumo, o con consumo mayor a seis meses, sin historia de reacción. En un subgrupo se midió la sIgE para camarón, Der p y Lit v 1. Se compararon los pacientes sensibilizados a ácaro y camarón (casos) y los sensibilizados solo a ácaros (controles). Resultados: De 229 pacientes, 48 (21 %) se encontraban sensibilizados a camarón. No hubo diferencia estadísticamente significativa en la ingesta de camarón entre casos (54.2 %) y controles (49.7 %); ocho casos presentaron síntomas al contacto con camarón. No se encontraron diferencias estadísticamente significativas en la sIgE para Der p, Lit v1 y camarón entre casos y controles. Se observó cambio mediano en la magnitud de efecto: 0.45, 0.44 y 0.41, respectivamente. Conclusiones: La sensibilización a camarón en pacientes con asma o rinitis alérgica por ácaros es alta, en 25 % parece ser clínicamente relevante, principalmente en aquellos con asma. La ingesta no es la principal vía de exposición a la tropomiosina; la reactividad cruzada puede explicar la frecuencia de sensibilización.
- Published
- 2019
39. Control of Tetranychus urticae Koch (Acari: Tetranychidae) with Bacillus subtilis on strawberry leaves (Fragaria vesca)
- Author
-
David Mendoza Léon, Jorge Dobronski Arcos, Carlos Vásquez Freytez, Sara Paredes Carreño, and Vanessa Frutos Pinto
- Subjects
Mites ,Agriculture (General) ,biologic control ,Agriculture ,General Medicine ,ácaros ,Biology ,Pesticide ,biology.organism_classification ,mortality ,Ácaros ,S1-972 ,Horticulture ,microorganismos benéficos ,mortalidad ,Tetranychus urticae ,control biológico ,beneficial microorganisms ,Field conditions - Abstract
Resumen En Ecuador se han reportado pérdidas entre 60 y 80% ocasionadas por la alimentación de Tetranychus urticae en plantas de fresa, por lo que se requieren frecuentes aplicaciones de plaguicidas. En el presente estudio se evaluó la actividad patogénica de diferentes concentraciones de B. subtilis (0, 1, 2 y 3 cc.l-1), mediante la técnica de contacto residual usando hembras de T. urticae de 48 h de edad. No se observó incremento en la mortalidad de las hembras de T. urticae por efecto de las diferentes concentraciones de B. subtilis, sin embargo, estas fueron estadísticamente superiores en referencia al control. Adicionalmente, no se observó efecto de las diferentes dosis de B. subtilis sobre la oviposición de T. urticae. Basados en los resultados, la aplicación de B. subtilis podría ser considerada como una alternativa para el combate de las poblaciones de T. urticae, sin embargo, se requiere validar estos resultados bajo condiciones de campo. Abstract In Ecuador, feeding of Tetranychus urticae has reported losses between 60 and 80% in strawberry plants, so frequent applications of pesticides are required. In this study the pathogenic activity of different concentrations of B. subtilis (0, 1, 2 and 3 cc.l-1) on 48-h-old T. urticae females was evaluated by using residual contact technique. There was no increase in the mortality of T. urticae females due to the different concentrations of B. subtilis, however these were statistically higher in reference to the control. Additionally, no effect of the different doses of B. subtilis on the oviposition of T. urticae was observed. Based on the results, the application of B. subtilis could be considered as an alternative for the control of T. urticae populations, however validation under field conditions are required to validate these results.
- Published
- 2019
40. Contaminação por ácaros em arroz polido e feijão comercializados a granel Mite contamination in polished rice and beans comercialized in municipal markets
- Author
-
Marcia R Franzolin and Domingos Baggio
- Subjects
Contaminação de alimentos ,Ácaros ,Food contamination ,Mites ,Public aspects of medicine ,RA1-1270 - Abstract
OBJETIVO: Avaliar a situação de contaminação por ácaros em grãos comercializados a granel em nove mercados municipais da cidade de São Paulo, no período de novembro/1989 a novembro/1990. MÉTODOS: Foram analisadas microscopicamente após tamisação 25 amostras de arroz polido e 53 de feijão, semanalmente até completar 42 dias, mantidas à temperatura ambiente. Outras alíquotas das amostras foram mantidas em estufa a 25°C e 75% de umidade relativa do ar (URA), durante 28 dias. RESULTADOS: As amostras apresentaram-se negativas para ácaros no primeiro dia de análise, sendo detectados após incubação. As amostras mantidas em estufa apresentaram maior percentual de exames positivos para ácaros (incidência): 31,7% (1.845 ácaros). As amostras mantidas no ambiente apresentaram 6,9% (45 ácaros). As amostras de arroz polido apresentaram maior contaminação do que as amostras de feijão. O maior percentual de ácaros ocorreu em temperatura média mensal de laboratório de 21,5ºC a 22,5°C (37,8%) e a uma umidade de 73,5% a 74,5% (31,1%). CONCLUSÕES: A espécie predominante foi Tyrophagus putrescentiae. A população de ácaros apresentou maior proliferação na primavera, verão e início do outono, devido à influência da temperatura e da URA.Tais resultados confirmam a importância de aprimorar o armazenamento de grãos, visando a não proliferação de ácaros.OBJECTIVE: To evaluate mite contamination rate in grains commercialized in nine municipal markets of the city of São Paulo, in the period from November 1989 to November 1990. METHODS: 23 samples of polished rice and 53 samples of beans were microscopically examined after sieving, once a week and during 42 days at air temperature. Other sample fractions were kept in an incubator at 25°C and 75% Relative Humidity (RH) during 28 days. RESULTS: Samples were negative for mites in the first day of analysis and were detected after incubation. Samples incubated revealed a higher percentage of positive examinations for mites (incidence): 31.7% (and 1,845 mites); while samples kept at air temperature showed only 6.9% (and 45 mites). Samples of polished rice were more contaminated in comparison to the ones of beans. There was a larger amount of mites when the mean monthly temperature of the laboratory was between 21.5°C to 22.5°C (37.8%) and humidity between 73.5% to 74.5% (31.1%). CONCLUSIONS: The predominant species was Tyrophagus putrescentiae and other identified species were Blomia tropicalis, Cheyletus spp., Blattisocius tarsalis, and others. Mite population had a higher proliferation rate during spring, summer and in the beginning of autumn, due to highest temperature and humidity. These results confirm the importance of improving grains storage, to avoid mites proliferation.
- Published
- 2000
- Full Text
- View/download PDF
41. PRIMEROS REGISTROS DE ACAROS DEL GENERO NEHARPYRHYNCHUS (ACARIFORMES: HARPIRHYNCHIDAE) EN AVES DEL PERU
- Author
-
Literák, Ivan, Bochkov, Andre V., Cárdenas-Callirgos, Jorge, and Capek, Miroslav
- Subjects
Ectoparasitos ,mites ,Acaros ,aves ,birds ,Amazilia ,Ectoparasites ,Neharpyrhynchus ,Thraupis - Abstract
Two mite species of the genus Neharpyrhynchus (Acariformes: Harpirhynchidae) were recorded on wild birds in Peru: Neharpyrhynchus trochilinus from Amazilia lacteal, and A. chionogaster (both Apodiformes: Trochilidae) and Neharpyrhynchus tangara from Thraupis episcopus (Passeriformers: Thraupidae). Records from A. chionogaster and T. episcopus represent new hostparasite associations. Mites of this genus were found in Peru for the first time. Dos especies de ácaros del género Neharpyrhynchus (Acariformes: Harpirhynchidae) fueron registrados en aves silvestres del Perú: Neharpyrhynchus trochilinus ex Amazilia lactea y A. chionogaster (ambos Apodiformes: Trochilidae) y Neharpyrhynchus tangara ex Thraupis episcopus (Passeriformes: Thraupidae). Los registros en A. chionogaster y T. episcopus representan nuevas asociaciones huesped - parásito. Los ácaros de este género fueron reportados por primera vez para el Perú.
- Published
- 2021
42. Prevalencia de ectoparásitos en cuyes (Cavia porcellus) de crianza familiar-comercial en el distrito de Matahuasi, Junín (Perú)
- Author
-
Santos R., Fiorela, Pinedo V, Rosa, and Chávez V., Amanda
- Subjects
piojos ,mites ,family-commercial breeding ,cuy ,lice ,ácaro ,crianza familiar-comercial ,guinea pig - Abstract
The aim of this study was to determine the prevalence of ectoparasites in guinea pigs (Cavia porcellus) of family-commercial breeding in the district of Matahuasi, Junín, Peru, as well as to identify parasitic species, type of parasitic association and evaluate the association between the presence of ectoparasites and the productive stage and sex variables. A total of 299 guinea pigs were evaluated between January and March 2017. Ectoparasites were collected using four techniques (deep skin scraping, adhesive tape, trichogram and fine combing). The ectoparasites were examined by direct observation under the microscope at 10X and 40X, and in some cases they were rinsed with 10% KOH. The prevalence of ectoparasites was 67.0 ± 5.3%, identifying three species of acariforms (63.0 ± 5.5%) and one species of Phthiraptera (12.0 ± 3.7%). Among the acariforms, Ornithonyssus bursa (53%), Chirodiscoides caviae (15%) and Dermanyssus gallinae (7%) were identified. The Phthiraptera species was Gliricola porcelli (12%). Monoparasitism was the most frequent (75%). No significant association was found between the presence of ectoparasites and the productive stage and sex variables., El objetivo del estudio fue determinar la prevalencia de ectoparásitos en cuyes (Cavia porcellus) de crianza familiar-comercial en el distrito de Matahuasi, Junín, Perú, así como identificar las especies parasitarias, tipo de asociación parasitaria y evaluar la asociación entre la presencia de ectoparásitos y las variables etapa productiva y sexo. Se evaluaron 299 cuyes entre enero y marzo de 2017. Los ectoparásitos fueron recolectados mediante cuatro técnicas (raspado profundo de piel, cinta adhesiva, tricograma y peinado fino). Los ectoparásitos fueron examinados por observación directa al microscopio a 10X y 40X, y en algunos casos fueron aclarados con KOH al 10%. Se encontró una prevalencia de 67.0 ± 5.3%, identificándose tres especies de acariformes (63.0 ± 5.5%) y una especie de Phthiraptera (12.0 ± 3.7%). Dentro de los acariformes se identificó Ornithonyssus bursa (53%), Chirodiscoides caviae (15%) y Dermanyssus gallinae (7%). La especie Phthiraptera fue Gliricola porcelli (12%). El monoparasitismo fue el más frecuente (75%). No se encontró asociación significativa entre la presencia de ectoparásitos y las variables etapa productiva y sexo.
- Published
- 2020
43. Impacto de la inmunoterapia alérgeno-específica en pacientes pediátricos con asma atendidos en una institución de salud de Colombia
- Author
-
Puerto Fuentes, Jorge Andrés, Uribe Garcia, Susana, Calvo, Victor, and Cardona Villa, Ricardo
- Subjects
Mites ,Espirometría ,Spirometry ,Pediatría ,Inmunoterapia ,Immunotherapy ,Pediatrics ,Asma ,Asthma ,Rinitis ,Ácaros ,Rhinitis - Abstract
RESUMEN: Introducción: El asma es una enfermedad crónica y potencialmente grave que afecta a cerca de 300 millones de personas, es en un 80% de los casos de etiología alérgica, por lo que la inmunoterapia (IT) con extracto alergénico es una alternativa terapéutica que busca modular el curso natural de la enfermedad. La mayoría de los niños con asma usan corticosteroides inhalados (ICS), el beneficio adicional de inmunoterapia en niños asmáticos debe ser evaluado. Objetivo: Evaluar el efecto de la inmunoterapia en un grupo de pacientes pediátricos con asma, atendidos en una institución de salud de Colombia. Materiales y métodos: Estudio observacional descriptivo con componente analítico de corte transversal. Se incluyeron 62 pacientes pertenecientes al estudio original RATTA (Research About Tropical Trends in Asthma), con diagnóstico de asma alérgica, sensibilizados a ácaros del polvo y en tratamiento con mínimo 6 dosis de inmunoterapia con extractos alergénicos de ácaros. Para evaluar el efecto de la inmunoterapia se realizaron evaluaciones de puntuación ACT (Asthma Control Test, por sus siglas en inglés), escala de tratamiento GINA (Global Initiative for Asthma) y valores de espirometría previos al inicio de la IT (T0) y en una segunda evaluación (T1) posterior. Resultados: Al evaluar el efecto de IT en la puntuación ACT, se encontró que previo al inicio de esta, 30 pacientes tenían un asma no controlada, 28 un buen control y 4 pacientes un asma totalmente controlada. De los 30 pacientes con asma no controlada, un 46,7% (n=14) logró un buen control del asma y un 23,3% (n=7) alcanzó un control total de la patología. En la evaluación de la percepción de los pacientes sobre la mejoría con la IT, el 9,75% percibió una respuesta menor del 50%, un 45,2% una respuesta entre el 50%-89% y un 42 % refirió una respuesta igual o mayor al 90%. En total un 70% de los pacientes alcanzó un control parcial o total de la patología con la IT p= (0,096). Se encontró un efecto significativo en el valor absoluto pre y post broncodilatador del VEF1 de la espirometría. Conclusiones: Se observaron cambios significativos en las puntuaciones ACT, escala GINA, el valor absoluto del VEF1 y la percepción de mejoría de la enfermedad en la población evaluada con la inmunoterapia específica para ácaros ABSTRACT: Introduction: Asthma is a chronic and potentially serious disease that affects nearly 300 million people, it is in 80% of cases of allergic etiology, so immunotherapy (IT) with allergenic extract is a therapeutic alternative that seeks modulate the natural course of the disease. Most children with asthma use inhaled corticosteroids (ICS), the added benefit of immunotherapy in asthmatic children should be evaluated. Objective: To evaluate the effect of immunotherapy in a group of pediatric patients with asthma, treated at a Colombian health institution. Materials and methods: Observational descriptive study with analytical crosssectional component. Sixty-two patients from the original RATTA study (Research About Tropical Trends in Asthma), diagnosed with allergic asthma, sensitized to dust mites and treated with at least 6 doses of immunotherapy with allergenic mite extracts were included. To assess the effect of immunotherapy, assessments of ACT score (Asthma Control Test), GINA (Global Initiative for Asthma) treatment scale, and spirometry values were performed prior to the initiation of IT (T0) and in a second subsequent evaluation (T1). Results: When evaluating the effect of IT on the ACT score, it was found that prior to the start of this score, 30 patients had uncontrolled asthma, 28 had good control and 4 patients had fully controlled asthma. Of the 30 patients with uncontrolled asthma, 46.7% (n = 14) achieved good asthma control and 23.3% (n = 7) achieved total control of the pathology. In the evaluation of patients' perception of improvement with IT, 9.75% perceived a response of less than 50%, 45.2% a response between 50% -89% and 42% reported an answer. equal to or greater than 90%. In total, 70% of the patients achieved partial or total control of the pathology with IT p = (0.096). A significant effect was found in the absolute pre and post bronchodilator value of FEV1 of spirometry. Conclusions: Significant changes were observed in the ACT scores, the GINA scale, the absolute value of FEV1 and the perception of improvement of the disease in the population evaluated with specific mite immunotherapy
- Published
- 2020
44. Association Between Demodex Infestation and Severe Acne Vulgaris: A Cross-Sectional Study of 168 Patients.
- Author
-
Maldonado-Gómez W, Guevara-Sánchez E, Guevara-Vásquez G, Mera-Villasis K, and Munayco CV
- Subjects
- Adolescent, Adult, Animals, Cross-Sectional Studies, Female, Humans, Male, Skin, Young Adult, Acne Vulgaris, Mite Infestations, Mites
- Abstract
Background and Objectives: Infestation with Demodex mites has been associated with acne vulgaris. The aim of this study was to explore the association between Demodex infestation and severe acne vulgaris in outpatients seen at Hospital Regional Lambayeque in Chiclayo, Peru., Material and Methods: We conducted a cross-sectional study of 46 patients with severe acne and 92 patients with nonsevere acne. Severe acne vulgaris was diagnosed if the score was 3 or more on the Spanish Acne Severity Scale (EGAE, in its Spanish acronym). Demodex infestation was diagnosed when a skin surface biopsy showed more than 5 mites/cm
2 ., Results: The patients had a median age of 18 years (interquartile range, 15-20 years), 60.9% were male, 81.9% lived in an urban area, and 29.7% were infested with Demodex mites. In the bivariate analysis, severe acne vulgaris was significantly associated with Demodex infestation (P=.001), sex (P=.003), residence (P=.015), a paternal history of acne (P=.045), a maternal history of acne (P=.045), and type of skin (P<.001). In the multivariate analysis, after adjustment for male sex, urban residence, previous treatment, maternal and paternal history of acne vulgaris, and an oily skin type, patients with Demodex infestation were 4.2 times more likely to have severe acne vulgaris (95% CI: 1.6-10.9, P=.003)., Conclusion: Demodex infestation was associated with severe acne vulgaris in outpatients at our hospital., (Copyright © 2022 AEDV. Publicado por Elsevier España, S.L.U. All rights reserved.)- Published
- 2022
- Full Text
- View/download PDF
45. Impact of allergen immunotherapy after two years of suspension in patients with asthma
- Author
-
Jorge, Sánchez, Ricardo, Cardona, and Andrés, Sánchez
- Subjects
lcsh:Immunologic diseases. Allergy ,Mites ,Time Factors ,Age Factors ,Alergia ,Asthma ,Ácaros ,Treatment Outcome ,Desensitization, Immunologic ,Blomia ,Case-Control Studies ,Alérgenos ,Administration, Inhalation ,Disease Progression ,Quality of Life ,Dermatophagoides ,Animals ,Humans ,Steroids ,Sensibilización ,Immunotherapy ,lcsh:RC581-607 ,Eficacia, Costo, Economía, Inmunoterapia ,Asma ,Follow-Up Studies - Abstract
Immunotherapy has proven to be effective in controlling allergic asthma. However, few studies have evaluated whether the control and reduction of drug treatment persist after treatment ends.To evaluate the effect of immunotherapy with mites in asthma patients after two years of its suspension on drug treatment and number of exacerbations.Observational study ambispective with active group (immunotherapy and pharmacotherapy) and control (only pharmacotherapy) group followed up for 5 years divided into two phases: 3 years of application of immunotherapy and two year of follow-up after its suspension.122 patients in the active group and 384 in the control group were included. Both groups had fewer exacerbations after the sixth month (p = 0.04). After nine months the active group had a significant reduction in the use of inhaled steroids (p = 0.05) compared to the control group. Two years after finished immunotherapy, patients in the active group received a lower inhaler doses than the control group. Children under 14 years mono-sensitized had the best response in all parameters evaluated.The allergen immunotherapy improves asthma control and reduces the required doses of pharmacotherapy. These effects have an important impact on quality of life and perhaps economically for patients with asthma. The beginning at an early age seems to have a major impact.Antecedentes: la inmunoterapia ha demostrado su eficacia en el control del asma alérgica; sin embargo, pocos estudios han evaluado si el control y la reducción del tratamiento farmacológico persisten al suspenderlo. Objetivo: evaluar el efecto de la inmunoterapia con ácaros en pacientes con asma luego de dos años de suspensión. Métodos: estudio ambispectivo, observacional, abierto con grupo activo (inmunoterapia y farmacoterapia) y grupo control (farmacoterapia) con seguimiento durante cinco años: dividido en dos fases: tres años de aplicación de la inmunoterapia y dos años de seguimiento luego de su suspensión. Resultados: se incluyeron 122 pacientes en el grupo activo y 384 en el grupo control. Ambos grupos tuvieron menor número de exacerbaciones luego del sexto mes (p= 0,04). Después de nueve meses el grupo activo tuvo una reducción importante en la necesidad de aplicación de esteroides inhalados (p= 0.05) versus el grupo control. Después de dos años de la suspensión de la inmunoterapia, la dosis de inhaladores que recibían los pacientes en el grupo activo fue menor que la del grupo control. Los menores de 14 años monosensibilizados tuvieron la mejor respuesta en todos los parámetros evaluados. Conclusión: la inmunoterapia con alergenos disminuye los síntomas del asma y las dosis de medicamentos necesarias para el control del paciente. Estos efectos tienen una repercusión significativa en la calidad de vida y en la economía de los pacientes con asma. El inicio a edades tempranas parece tener mayor impacto clínico.
- Published
- 2016
46. Exposición y sensibilización a insectos en pacientes alérgicos en el trópico
- Author
-
Jorge Sánchez, Ricardo Cardona, and Andrés Sánchez
- Subjects
lcsh:Immunologic diseases. Allergy ,Veterinary medicine ,Allergy ,sensibilización a ácaros ,media_common.quotation_subject ,Aedes aegypti ,Insect ,ants ,Immunoglobulin E ,General Biochemistry, Genetics and Molecular Biology ,Allergic sensitization ,030207 dermatology & venereal diseases ,03 medical and health sciences ,0302 clinical medicine ,cockroaches ,biology.animal ,medicine ,Mite ,cucarachas ,hipersensibilidad ,Sensitization ,media_common ,Cockroach ,Mites ,biology ,hormigas ,ige sérica ,ácaros ,biology.organism_classification ,medicine.disease ,medicine.anatomical_structure ,Culicidae ,030228 respiratory system ,biology.protein ,hypersensitivity ,lcsh:RC581-607 ,alergia a insectos - Abstract
Resumen Introducción. Los ácaros son una importante fuente de alérgenos en el trópico, pero poco se han estudiado otras fuentes potenciales de alérgenos prevalentes en la zona, como los insectos. Objetivo. Determinar la relación entre la exposición y la sensibilización alérgica a cucarachas, mosquitos y hormigas, y su interacción con la sensibilización a los ácaros. Materiales y métodos. Se incluyeron pacientes con pruebas de alergia para Blatella germanica, Aedes aegypti, Solenopsis invicta, Blomia tropicalis, Dermatophagoides farinae y D. pteronyssinus. Se determinó la sensibilización mediada por inmunoglobulina E (IgE) mediante pruebas intraepidérmicas. Para la exposición a los insectos en las casas, se utilizaron trampas para insectos rastreros y voladores. Resultados. Se incluyeron 186 pacientes, de los cuales 73 (39,2 %) presentaron sensibilidad a uno de los insectos (cucarachas: 21 %, mosquitos: 29 %, hormigas: 26,3 %). De estos, 71 (97,2 %) presentaron sensibilización a los ácaros, en tanto que de los 148 pacientes sensibilizados a algún ácaro, solo el 47,9 % lo estaba a algún insecto. Se evaluaron 104 casas: en el 74 %, se encontraron cucarachas, en el 22%, hormigas, y en el 52 %, mosquitos. En los pacientes sensibilizados a los insectos, el número de insectos por casa tuvo una relación directa con el tamaño del habón aparecido durante la prueba cutánea: cucaracha, r=0,781 (p
- Published
- 2018
47. IgY antialérgenos específicos del grupo 1 de ácaros del polvo doméstico inducidos por oligopéptidos sintéticos no glicosilados
- Author
-
Eduardo, Egea, Dary, Mendoza, Gloria, Garavito, Ángela, Espejo, Lina Maria, Lizaraso, Elkin, Navarro, and Luis Alejandro, Barrera
- Subjects
lcsh:Arctic medicine. Tropical medicine ,mites ,lcsh:RC955-962 ,lcsh:R ,Pyroglyphidae ,Immunoglobulins ,lcsh:Medicine ,anticuerpos, ácaros, oligopéptidos, yema de huevo ,Allergens ,Antibodies ,respiratory tract diseases ,egg yolk ,Animals ,alérgenos ,antibodies ,Antigens, Dermatophagoides ,oligopeptides ,Chickens ,Oligopeptides - Abstract
Resumen Introducción. La obtención de anticuerpos específicos capaces de detectar alérgenos del grupo 1 de ácaros del polvo doméstico representa una estrategia potencial de salud pública para reducir la exposición y la sintomatología clínica asociada con el asma y la rinitis alérgica. Objetivo. Producir y purificar anticuerpos aviares antialérgenos específicos del grupo 1 de los ácaros Dermatophagoides sp.y Blomia tropicalis utilizando la tecnología IgY. Materiales y métodos. Se diseñaron y sintetizaron oligopéptidos que evidenciaran epítopes inmunogénicos de los alérgenos Der p1, Der f1 y Blo t1 empleados posteriormente para producir anticuerpos IgY policlonales en gallinas Hy Line Brown. Las IgY presentes en las yemas de los huevos se purificaron mediante cromatografía tiofílica. Su inmunorreactividad y especificidad se determinaron mediante un inmunoensayo ELISA indirecto y Dot Blot. Resultados. Se obtuvo una reactividad elevada de las IgY contra epítopes de alérgenos presentes en extractos de cuerpo entero de D. farinae, D. pteronyssinus y B. tropicalis. Los niveles más altos de IgY se produjeron entre los días 32 y 40 de inmunización. Los anticuerpos mostraron mayor inmunorreactividad y especificidad en el reconocimiento de proteínas de D. farinae, con un límite de detección mayor de 0,03 µg de proteína total delcaroajo las condiciones experimentales analizadas. Las IgY purificadas no mostraron reactividad significativa frente al extracto de Periplaneta americana. Conclusión. La tecnología IgY permitió la producción de anticuerpos específicos contra alérgenos del grupo 1 de los ácaros del polvo al utilizar oligopéptidos sintéticos no glicosilados. Hasta donde se sabe, esta es la primera vez que se usan estos reactivos inmunológicos para la detección de ácaros de importancia médica. Abstract Introduction: The use of specific antibodies capable of detecting allergens of the group 1 of house dust mites represents a potential strategy to reduce exposure and clinical symptomatology associated with asthma and allergic rhinitis. Objective: To produce and purify chicken antibodies specific for the dust mites Dermatophagoides sp. and B. tropicalis using the IgY technology. Materials and methods: We designed and synthesized oligopeptides showing immunogenic epitopes of Der p1, Der f1, and Blo t1. These were used to produce IgY antibodies in Hy Line Brown chickens. IgY were extracted from egg yolk using thiophilic chromatography. The immunogenicity and specificity were assayed by indirect ELISA and Dot Blot. Results: We obtained high reactivity of IgY antibodies against epitopes of allergens present in whole body mites extracts of D. farinae, D. pteronyssinus, and B. tropicalis. The highest IgY levels were registered between days 32 and 40 after immunization. The antibodies showed high immunoreactivity and specificity towards D. farinae proteins with detection limits above 0.03 µg of mite proteins under the experimental conditions used. Purified IgY did not show significant reactivity when binding to Periplaneta americana extract. Conclusion: The IgY technology allowed the production of specific antibodies against house dust mites group 1 allergens using non-glycosylated synthetic peptides. To our knowledge, this is the first time that this immunochemicals are used in the detection of mites of medical relevance.
- Published
- 2018
48. Transmission parameters of citrus leprosis virus by Brevipalpus yothersi (Acari: Tenuipalpidae)
- Author
-
Leon M., Guillermo, Roy, Avijit, Choudhary, Nandlal, Brlansky, Ronald, Sociedad Colombiana de Entomología - Socolen, and Universidad del Valle
- Subjects
Mites ,Lesions ,Vectores ,Lesiones ,Ácaros - Abstract
Citrus leprosis, caused by (Citrus Leprosis Virus, CiLV) is an important, economic and quarantine phytosanitary problem for citrus industry in producer countries. Presence of CiLV in Colombia was confirmed in 2004 at Meta and Casanare states; the red flat mite Brevipalpus yothersi Baker (formerly identified as Brevipalpus phoenicis Geijskes) (Acari: Tenuipalpidae), is recognized as the principal vector of this virus in the country. Transmission parameters as acquisition access period, inoculation access period and percentage of viruliferous mites with CiLV, were carried out through transmission tests and molecular analysis at CORPOICA “La Libertad” Research Center, Meta, Colombia. By testing acquisition periods between 10 minutes and 72 hours, it was found B. yothersi mites needs 30 minutes feeding to acquire the virus on Valencia orange leaves (Citrus sinensis L.) Osbeck with symptomatic lesions. The minimum period required by mites to transmit the virus to C. sinensis plants was 10 minutes. For transmission periods between 10 minutes to 24 hours, receptor leaves show leprosis lesions percentages between 25 % and 68.75 %. According to transmission and RT-PCR tests, 40 % of mite population acquired the CiLV-C2 after three days of feeding on leprosis lesions. This results increase knowledge of plant - virus - vector interactions, which is essential for establishment of prevention and disease management programs.
- Published
- 2017
49. Transmission parameters of citrus leprosis virus by Brevipalpus yothersi (Acari: Tenuipalpidae)
- Author
-
Leon M, Guillermo, Roy, Avijit, Choudhary, Nandlal, and Brlansky, Ronald
- Subjects
mites ,vectors ,Lesions ,acquisition ,ácaros ,Lesiones ,vectores ,adquisición - Abstract
Resumen La leprosis de los cítricos, causada por virus (Citrus Leprosis Virus, CiLV), es un problema fitosanitario de importancia económica y cuarentenaria para la citricultura de países productores. En Colombia su presencia fue confirmada en 2004 en los departamentos del Meta y Casanare; el ácaro Brevipalpus yothersi Baker (antes identificado como Brevipalpus phoenicis Geijskes) (Acari: Tenuipalpidae), se reconoce como el principal vector del virus en el país. Se determinaron los parámetros: período de acceso para adquisición, período de acceso para inoculación y porcentaje de ácaros infectados con CiLV, por medio de pruebas de transmisión y análisis moleculares en el Centro de Investigación “La Libertad” de CORPOICA, Meta, Colombia. Al probar períodos de adquisición entre 10 minutos y 72 horas, se encontró que B. yothersi adquiere el virus después de 30 minutos de alimentación sobre hojas de naranja Valencia (Citrus sinensis L.) Osbeck con lesiones de leprosis. El período mínimo requerido por los ácaros para transmitir el virus hacia plantas de C. sinensis fue de 10 minutos. Para períodos de transmisión desde 10 minutos hasta 24 horas, los porcentajes de infección variaron entre 25 y 68,75 % en las hojas receptoras. De acuerdo a pruebas de transmisión y análisis RT-PCR, después de tres días de alimentación sobre lesiones de leprosis, el 40 % de las poblaciones del ácaro evaluadas adquirió el virus CiLV-C2. Los resultados obtenidos amplían el conocimiento de las interacciones planta - virus - vector, lo cual es fundamental para el establecimiento de programas de prevención y manejo de la enfermedad. Abstract Citrus leprosis, caused by (Citrus Leprosis Virus, CiLV) is an important, economic and quarantine phytosanitary problem for citrus industry in producer countries. Presence of CiLV in Colombia was confirmed in 2004 at Meta and Casanare states; the red flat mite Brevipalpus yothersi Baker (formerly identified as Brevipalpus phoenicis Geijskes) (Acari: Tenuipalpidae), is recognized as the principal vector of this virus in the country. Transmission parameters as acquisition access period, inoculation access period and percentage of viruliferous mites with CiLV, were carried out through transmission tests and molecular analysis at CORPOICA "La Libertad" Research Center, Meta, Colombia. By testing acquisition periods between 10 minutes and 72 hours, it was found B. yothersi mites needs 30 minutes feeding to acquire the virus on Valencia orange leaves (Citrus sinensis L.) Osbeck with symptomatic lesions. The minimum period required by mites to transmit the virus to C. sinensis plants was 10 minutes. For transmission periods between 10 minutes to 24 hours, receptor leaves show leprosis lesions percentages between 25 % and 68.75 %. According to transmission and RT-PCR tests, 40 % of mite population acquired the CiLV-C2 after three days of feeding on leprosis lesions. This results increase knowledge of plant - virus - vector interactions, which is essential for establishment of prevention and disease management programs.
- Published
- 2017
50. Impact of the allergen-specific immunotherapy in pediatric patients with asthma treated at a health institution in Colombia
- Author
-
Puerto JA, Uribe S, Calvo V, and Cardona R
- Subjects
- Allergens, Animals, Antigens, Dermatophagoides, Child, Colombia, Cross-Sectional Studies, Humans, Pyroglyphidae, Asthma therapy, Desensitization, Immunologic
- Abstract
Introduction: Asthma is a chronic and potentially serious disease and 80% of the cases have an allergic etiology. In this sense, allergen-specific immunotherapy is an alternative that modulates the natural course of the disease. Objective: To evaluate the impact of immunotherapy in pediatric asthma patients treated at a health institution in Colombia. Materials and methods: We conducted an observational descriptive study with an analytical cross-sectional component. Sixty-two patients diagnosed with allergic asthma sensitized to dust mites and treated with at least 6 doses of mite immunotherapy were included. We assessed the impact of immunotherapy using the Asthma Control Test (ACT), the Global Initiative for Asthma (GINA) treatment scale, and spirometry values. Results: The ACT score before the start reported 30% of patients with uncontrolled asthma, 28% with good control, and 4% with totally controlled asthma. Of the patients with uncontrolled asthma, 46.7% achieved good control and 23.3% total control. Regarding patients’ perception of improvement with the immunotherapy, 9.75% perceived a response of less than 50%, 45.2% one between 50% -90%, and 41.9% reported response equal to or greater than 90%. No significant changes in FEV1 values were found in spirometry. Conclusions: Significant changes in the ACT scores and the perception of disease improvement were observed in the population evaluated with specific mite immunotherapy, i.e., it had a positive impact on the natural course of the disease.
- Published
- 2021
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.