6 results on '"Abdallah, Vanessa Doro"'
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2. Biodiversity and ecology of the parasitic infracommunities of Loricaria prolixa (Siluriformes: Loricariidae) from the Tietê-Batalha Basin, SP, Brazil
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Pelegrini, Larissa Sbeghen [UNESP], Januário, Felipe Freitas, de Azevedo, Rodney Kozlowisky, Abdallah, Vanessa Doro, Universidade Estadual Paulista (UNESP), and Universidade do Sagrado Coração
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Biological diversity ,biological diversity ,QH301-705.5 ,protozoologia parasitária animal ,catfishes ,fish parasites ,Biology (General) ,freshwater ,Helmintologia animal ,Microbiology ,QR1-502 - Abstract
Made available in DSpace on 2022-04-28T19:09:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-01-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The parasitic biodiversity of the Loricaria prolixa, an endemic fish from the Paraná and Prata basins was studied and analyzed the parasitic’s communities dynamics and their ecological relations with this host. Samples were collected in the Batalha River and 39 specimens were analyzed from 2014 to 2016. All fishes were parasitized. The component community was composed by twelve species with 8694 metazoan found on the surface, gills, eyes, brain, intestine and blood of the hosts. Demidospermus spirophallus, Diplostomidae gen. sp., Rhabdochona kidderi and Oligobdella sp. showed higher values for the parasitism's ecological descriptors, and were centrals and dominants species. The infracommunities were characterized by specific richness smaller in relation to diversity, and both superior to equitability (H’ = 0.94; J = 0.6; d = 0.83). There was a significant positive correlation between the host standard length and the parasite abundance of D. spirophallus, Diplostomidae gen. sp. and Oligobdella sp., while Procamallanus (Spirocamallanus) inopinatus presented a significant negative correlation. This is the first contribution concerning the parasite biodiversity of L. prolixa. Clinostomum detruncatum, Diplostomidae gen. sp., Austrodiplostomum compactum, R. kidderi, P. (S.) inopinatus, P. (S.) rebecae, Cucullanus pinnai pinnai, Oligobdella sp. and Trypanosoma sp. were first recorded in this host. Instituto de Biociências de Botucatu Universidade Estadual Paulista “Júlio de Mesquita Filho”, Rua Professor Doutor Antônio Celso Wagner Zanin, 250 Laboratório de Ictioparasitologia Central de Laboratórios de Ciência e Tecnologia Ambiental Universidade do Sagrado Coração Instituto de Biociências de Botucatu Universidade Estadual Paulista “Júlio de Mesquita Filho”, Rua Professor Doutor Antônio Celso Wagner Zanin, 250 FAPESP: 2012/23655-0 FAPESP: 2014/12862-0
- Published
- 2018
3. Sphincterodiplostomum musculosum (Digenea, Diplostomidae) in Geophagus brasiliensis (Perciformes, Cichlidae) collected in a lake at Dois Córregos, São Paulo, Brazil
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Rocha, Rodrigo Severiano, Pelegrini, Larissa Sbeghen [UNESP], Camargo, Aline de Almeida [UNESP], Abdallah, Vanessa Doro, de Azevedo, Rodney Kozlowiski, Universidade do Sagrado Coração (USC), and Universidade Estadual Paulista (Unesp)
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acará ,metacercárias ,metacercariae ,South America ,fish parasites ,ciclídeos ,América do Sul ,cichlids ,parasitos de peixe - Abstract
Geophagus brasiliensis is a freshwater cichlid distributed throughout the whole South America. It is a territorial fish, generally omnivorous, which preferentially inhabits the bottom of water bodies. Previous studies have reported species of digenetic trematodes parasitizing G. brasiliensis. This study identifies the Sphincterodiplostomum musculosum Dubois, 1936, a Diplostomidae digenetic, commonly found in many teleostean species. More than 50% of the hosts analyzed had their eyes infected with metacercariae of S. musculosum. A positive correlation was observed between the hosts standard length and the abundance of S. musculosum, a fact that corroborates with other studies on this parasite. This paper reports the first occurrence of S. musculosum in G. brasiliensis, which is also the first record in Dois Córregos City, São Paulo State, Brazil. RESUMO: Geophagus brasiliensis é um ciclídeo de água doce distribuído por toda a América do Sul. É um peixe territorialista, geralmente onívoro, que habita preferencialmente o fundo dos corpos d'água. Há o registro em trabalhos anteriores de espécies de digenéticos parasitando G. brasiliensis. O presente estudo traz a identificação de Sphincterodiplostomum musculosum Dubois, 1936, um diplostomídeo comumente encontrado em diversas espécies teleósteas. Mais de 50% dos hospedeiros analisados estavam com seus olhos parasitados com metacercárias de S. musculosum. Houve correlação positiva entre o comprimento padrão dos hospedeiros e a abundância de S. musculosum, fato que corrobora com outros trabalhos deste parasito. Este trabalho registra pela primeira vez a ocorrência de S. musculosum em G. brasiliensis, sendo também a primeira citação deste parasito na região de Dois Córregos, Estado de São Paulo, Brasil.
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- 2015
4. Supplementary studies on Henneguya guanduensis (Cnidaria: Myxosporea) infecting gills and intestine of Hoplosternum littorale in Brazil: Ultrastructural and molecular data.
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Vieira, Diego Henrique Mirandola Dias, Pelegrini, Larissa Sbeghen, Abdallah, Vanessa Doro, and de Azevedo, Rodney Kozlowiski
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GILLS , *INTESTINES , *CNIDARIA , *FISH parasites , *RECOMBINANT DNA - Abstract
Abstract Henneguya guanduensis was originally described as a gill parasite of the Hoplosternum litoralle , a siluriform fish belonging to the Callichthyidae family. A study was undertaken with 58 specimens of H. litoralle taken from Batalha River in the state of São Paulo. The fish were collected and examined searching for lesions and/or myxosporean plasmodia. The prevalence of infection was 9.31% in the gills and 5.17% in the intestine. The mature spores had elongated bodies with polar capsules of inequal size and a caudal length greater than body length. Morphological characteristics identified the parasite as H. guanduensis. Molecular analysis of the SSU rDNA partials sequences resulted in a 1796 bp and 1712 bp for gills and intestine repectively, demonstrating significant genetic differences with previously described species of Henneguya and 99.7% similarity to each other when aligned. Phylogenetic analysis comparing the SSU rDNA sequence of H. guanduensis with closest species as indicated by BLASTn Max Score showed H. guanduensis as sister species of H. loretoensis in a subclade compose by species that parasites fishes from Amazon basin. This is the first report of the finding of Henneguya guanduensis spores in the intestine of Hoplosternum littorale. Highlights • New morphological and molecular data of Henneguya guanduensis parasitizing Hoplosternum litoralle. • The prevalence of infection was 9.31% in the gills and 5.17% in the intestine. • Henneguya guanduensis appears as sister species of H. loretoensis in a subclade compose by species from Amazon basin. • This is the first time that H. guanduensis is found parasitizing the intestine of H. littorale. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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5. Morphological and molecular data of new species of Characithecium and Diaphorocleidus (Monogenea: Dactylogyridae) from Neotropical characid fishes.
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Zago, Aline Cristina, Franceschini, Lidiane, Abdallah, Vanessa Doro, Müller, Maria Isabel, Azevedo, Rodney Kozlowiski, and da Silva, Reinaldo José
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MONOGENEA , *CYTOCHROME oxidase , *SPECIES , *DIGENEA , *FISH parasites , *WATERSHEDS - Abstract
The present study describes three new species of monogenean parasites of characid fishes from the Upper Paraná River basin, Brazil: Characithecium paranapanemense n. sp. on Psalidodon paranae and Psalidodon bockmanni , Diaphorocleidus magnus n. sp. on Astyanax lacustris and Psalidodon fasciatus , and Diaphorocleidus neotropicalis n. sp. on Astyanax lacustris and P. bockmanni. An amendment for Diaphorocleidus is proposed, since additional characters observed in the new species required to extend the generic diagnostic features mainly to include: articulation process connecting the base of the MCO with accessory piece present or absent, and accessory piece with variable shapes (plate-like, pincer-shaped, wrench-shaped, sheath-shaped), divided or not into subunits. Characithecium paranapanemense n. sp. can be distinguished from other congeners by the morphology of its MCO and accessory piece. Diaphorocleidus magnus n. sp. differs from most of its congeners by the morphology of its accessory piece, the presence of articulation process connecting the base of the MCO with accessory piece, and the morphology of the sclerotized structures of the haptor. Diaphorocleidus neotropicalis n. sp. can be easily distinguished from its congeners by the morphology of the accessory piece, the sclerotized structures of the haptor and the morphology of the vagina. Molecular data of the new species (partial 28S rDNA and mitochondrial cytochrome oxidase I) were obtained and the first phylogenetic analysis based on 28S rDNA gene sequences for species of Characithecium and Diaphorocleidus are provided. Although Diaphorocleidus and Characithecium share some morphological similarities, phylogenetic analysis indicates that species of these two genera are not closely related. [Display omitted] • Two new species of Diaphorocleidus and one of Characithecium are described. • Morphological and molecular data of new species are provided. • An amendment to the genus Diaphorocleidus is proposed. • First phylogenetic analysis for Diaphorocleidus and Characithecium are provided. • Phylogeny revealed that Diaphorocleidus and Characithecium are not closely related. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
6. Metazoan parasites diversity of the dominant species of Siluriformes fish from the Batalha River, middle Tietê riverbasin, São Paulo, Brazil
- Author
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Pelegrini, Larissa Sbeghen [UNESP], Universidade Estadual Paulista (Unesp), and Abdallah, Vanessa Doro [UNESP]
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Pseudopimelodus mangurus ,Tietê-Batalha river basin ,Hoplosternum littorale ,parasites diversity ,diversidade de parasitos ,Rhamdia quelen ,parasitos de peixes ,Hypostomus spp ,Loricaria spp ,bacia hidrográfica do Tietê-Batalha ,fish parasites - Abstract
Submitted by Larissa Sbeghen Pelegrini (larapelegrini@yahoo.com.br) on 2019-05-17T02:33:45Z No. of bitstreams: 1 Pelegrini_2018_Tese.doc: 13755392 bytes, checksum: c7476038c1acd60b44da2282a24c3c8b (MD5) Rejected by ROSANGELA APARECIDA LOBO null (rosangelalobo@btu.unesp.br), reason: Solicitamos que realize uma nova submissão seguindo as orientações abaixo: problema 1: arquivo em word O arquivo submetido deve, obrigatoriamente, estar em formato PDF. Seu arquivo está em Word. Assim que tiver efetuado a correção submeta o arquivo, em formato PDF, novamente. Agradecemos a compreensão. on 2019-05-17T19:32:57Z (GMT) Submitted by Larissa Sbeghen Pelegrini (larapelegrini@yahoo.com.br) on 2019-05-19T00:47:41Z No. of bitstreams: 1 Pelegrini_2018_Tese.pdf: 6179656 bytes, checksum: a00e2ac8a48a7c7d0296b398a2f978a4 (MD5) Approved for entry into archive by ROSANGELA APARECIDA LOBO null (rosangelalobo@btu.unesp.br) on 2019-05-21T16:38:05Z (GMT) No. of bitstreams: 1 pelegrini_ls_dr_bot_par.pdf: 856489 bytes, checksum: 8c947ec51bbff25682f878b2bed46c5d (MD5) Made available in DSpace on 2019-05-21T16:38:05Z (GMT). No. of bitstreams: 1 pelegrini_ls_dr_bot_par.pdf: 856489 bytes, checksum: 8c947ec51bbff25682f878b2bed46c5d (MD5) Previous issue date: 2018-02-21 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) No presente estudo é apresentada uma análise da diversidade de parasitos presentes em peixes da ordem Siluriformes, coletados durante os anos de 2014 a 2016 no rio Batalha, pertencente à bacia hidrográfica do Tietê-Batalha (BH-TB), localizada na Região Centro-Oeste do Estado de São Paulo. Os parasitos de organismos aquáticos, particularmente os de peixes, são subestimados quanto à sua importância no impacto das populações hospedeiras. Tem-se observado um aumento nas pesquisas com esta temática, com estudos mais aprofundados envolvendo a dinâmica populacional destes organismos ao longo do tempo-espaço em hospedeiros em seu ambiente natural, ampliando assim o conhecimento sobre as estratégias de adaptação nas relações parasito-hospedeiro-ambiente. Em regiões impactadas, como é o caso da maioria dos corpos d’água do Estado de São Paulo, e dependendo do tipo de alteração ambiental em seus arredores, toda a cadeia trófica dos organismos aquáticos será influenciada por tais mudanças, e os parasitos responderão mais rapidamente do que os seus hospedeiros a estas alterações. A diversidade de organismos aquáticos no rio Batalha ainda é pouco conhecida com estudos restritos na região, e os peixes da ordem Siluriformes se destacam tanto em riqueza de espécies quanto em abundância, cuja importância se dá nas práticas desportivas, na alimentação local e, principalmente, com finalidade ornamental. São organismos amplamente diversificados e complexos, distribuídos em vários tipos de ambiente, com preferência por ambientes com águas turvas, entre as rochas e a vegetação do fundo dos rios, com hábitos predominantemente noturnos, principalmente em regiões tropicais. No primeiro capítulo deste trabalho, foi realizado um inventário da fauna parasitária de 12 espécies de Siluriformes do rio Batalha, pertencente as seguintes espécies: Hypostomus regani, H. strigaticeps, H. hermanni, H. iheringii, H. ancistroides, H. albopunctatus, H. paulinus, Loricaria prolixa, L. piracicabae, Rhamdia quelen, Hoplosternum littorale e Pseudopimelodus mangurus, totalizando 283 hospedeiros. Foram encontrados 50 taxa de parasitos, e considerações acerca das espécies encontradas foram realizadas, além do registro de novas espécies a serem descritas, novas ocorrências de hospedeiros e também de nova localização geográfica. No segundo capítulo foi analisada a distribuição das infrapopulações parasitárias em quatro espécies de “cascudos” (Hypostomus regani; H. strigaticeps; H. hermanni e H. ancistroides) com uma avaliação da dinâmica das comunidades parasitárias e suas relações ecológicas envolvendo estes hospedeiros. Com todos os peixes parasitados, observou-se uma prevalência maior de ectoparasitos (Monogenea e Hirudinea) nos Hypostomus spp. analisados, com exceção para as metacercárias de Diplostomidae gen. sp., endoparasitos encontrados nos olhos dos hospedeiros. O terceiro e último capítulo abordará a análise morfológica e molecular destas metacercárias da família Diplostomidae parasitos do cristalino de quase todas as espécies de peixes analisadas (exceto P. mangurus). A identificação das espécies de diplostomídeos em todas as fases do ciclo de vida é difícil, mas a maior dificuldade se encontra na identificação das metacercárias devido à sua morfologia simples, o que fez com que técnicas moleculares fossem aplicadas em associação à morfologia descritiva. Com base na caracterização genética das sequências do gene Citocromo C Oxidase subunidade I (COI) e análise dos caracteres morfológicos destes organismos, foi sugerido um novo gênero distinto das demais linhagens genéticas de Diplostomidae conhecidas. Os anexos deste trabalho trazem uma chave de identificação das espécies pertencentes ao gênero Hypostomus presentes no rio Batalha, realizada para facilitar a identificação destes hospedeiros, e um manuscrito publicado na Acta Scientiarum. Biological Sciences entitulado “Biodiversity and ecology of the parasitic infracommunities of Loricaria prolixa (Siluriformes: Loricariidae) from the Tietê-Batalha Basin, SP, Brazil”. The present study analyzes the parasites diversity present in fish species of the order Siluriformes, collected during the years 2014 to 2016 in the Batalha River, Tietê-Batalha river basin (BH-TB), in the Central-West Region of the State of São Paulo. Parasites of aquatic organisms, particularly those parasitizing fish, are underestimated as to their importance in the impact of host populations. The studies on this theme has grown over time, with more in-depth studies involving the population dynamics of these organisms over time-space in hosts in their natural environment, thus increasing knowledge on adaptation strategies in parasite-host-environment relationship. In degraded regions, as is the case with most water bodies in the State of São Paulo, and depending on the type of environmental change in their surroundings, the entire trophic chain of aquatic organisms will be influenced by such changes, and the parasites will respond more than your hosts to these changes. The diversity of aquatic organisms in the Batalha River is still little known with restricted studies in the region, and the Siluriformes species stand out both in species richness and in abundance, whose importance is given in sports, local feeding and ornamental purpose. They are widely diversified and complex organisms, distributed in several types of environment, with preference for cloudy water, between rocks and vegetation of the bottom of the rivers, with predominantly nocturnal habits, mainly in tropical regions. In the first chapter of this study, an inventory of the parasitic fauna of 12 fish species of Siluriformes of the Batalha River was carried out, belonging to the following species: Hypostomus regani, H. strigaticeps, H. hermanni, H. iheringii, H. ancistroides, H. albopunctatus, H. paulinus, Loricaria prolixa, L. piracicabae, Rhamdia quelen, Hoplosternum littorale and Pseudopimelodus mangurus, totaling 283 hosts. Fifty parasite taxa were found, and considerations about the species found were made, besides the registration of new species to be described, new hosts occurrences and also new geographic location occurrence. In the second chapter, the distribution of parasitic infrapopulations in four species of "cascudos or catfishes" (Hypostomus regani, H. strigaticeps, H. hermanni and H. ancistroides) was analyzed with an evaluation of the parasitic’s communities dynamics and their ecological relations involving these hosts. All fish were parasitized. A higher prevalence of ectoparasites (Monogenea and Hirudinea) was observed in Hypostomus spp. analyzed, except for the metacercariae of Diplostomidae gen. sp., endoparasites found in the hosts eyes. The third and last chapter performed a morphological and molecular analysis of these Diplostomidae metacercariae, crystalline parasites of almost all species of fish analyzed (except P. mangurus). There is a great difficulty in identifying the Diplostomidae species in all phases of its life cycle, but especially in relation to the metacercariae phase, which made that molecular techniques applied in association with the descriptive morphology. Based on the genetic characterization of the Cytochrome C Oxidase subunit I (COI) gene sequences and analysis of the morphological characters of these organisms, it was suggested a new genus distinct from the other known genetic lines of Diplostomidae. In the "Attachments" section, an species identification key of the genus Hypostomus presents in the Batalha River was realized to facilitate the hosts identification. Finally, we present the manuscript published in Acta Scientiarum. Biological Sciences entitled “Biodiversity and ecology of the parasitic infracommunities of Loricaria prolixa (Siluriformes: Loricariidae) from the Tietê-Batalha Basin, SP, Brazil”. CAPES: 001
- Published
- 2018
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