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5. Lizards as Silent Hosts of Trypanosoma cruzi

Author

Botto-Mahan, Carezza, Correa, Juana P., Araya-Donoso, Raul, Farias, Francisca, San Juan, Esteban, Quiroga,Nicol, Campos-Soto, Ricardo, Reyes-Olivares, Claudio, and Gonzalez-Acuna, Daniel

Subjects
Lizards -- Health aspects, Chagas' disease -- Risk factors -- Environmental aspects, Disease transmission -- Risk factors -- Environmental aspects, Trypanosoma cruzi -- Environmental aspects, Animals as carriers of disease -- Health aspects, Health
Abstract

Chagas disease is one of the most neglected vectorborne diseases, infecting 6-7 million persons worldwide; 70 million persons are at risk for infection (1), and the disease is a concern [...]

Published
2022
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7. Advances in theory, data analysis, and application of the age-stage, two-sex life table for demographic research, biological control, and pest management

Author

Chi, Hsin, primary, Kavousi, Aurang, additional, Gharekhani, Gholamhossein, additional, Atlihan, Remzi, additional, Salih Özgökçe, Mehmet, additional, Güncan, Ali, additional, Gökçe, Ayhan, additional, Smith, Cecil L., additional, Benelli, Giovanni, additional, Guedes, Raul Narciso C., additional, Amir-Maafi, Masood, additional, Shirazi, Jalal, additional, Taghizadeh, Roya, additional, Maroufpoor, Mostafa, additional, Xu, Yong-Yu, additional, Zheng, Fang-Qiang, additional, Ye, Bao-Hua, additional, Chen, Zhen-Zhen, additional, You, Min-Sheng, additional, Fu, Jian-Wei, additional, Li, Jian-Yu, additional, Shi, Meng-Zhu, additional, Hu, Zu-Qing, additional, Zheng, Chang-Ying, additional, Luo, Lan, additional, Yuan, Zhong-Lin, additional, Zang, Lian-Sheng, additional, Chen, Yong-Ming, additional, Tuan, Shu-Jen, additional, Lin, Ya-Ying, additional, Wang, Hai-Hong, additional, Gotoh, Tetsuo, additional, Shaef Ullah, Mohammad, additional, Botto-Mahan, Carezza, additional, De Bona, Sophie, additional, Bussaman, Prapassorn, additional, Gabre, Refaat M., additional, Saska, Pavel, additional, Schneider, Marcela Inés, additional, Ullah, Farman, additional, and Desneux, Nicolas, additional

Published
2023
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9. Trypanosoma cruzi infection reduces the population fitness of Mepraia spinolai, a Chagas disease vector.

Author

de Bona, Sophie, Chi, Hsin, Bustamante, Ramiro O., and Botto‐Mahan, Carezza

Subjects
CHAGAS' disease, DISEASE vectors, TRYPANOSOMA cruzi, BLOODSUCKING insects, LIFE tables, MICE
Abstract

The hematophagous insect Mepraia spinolai (Hemiptera: Reduviidae: Triatominae) is naturally infected with the protozoan parasite Trypanosoma cruzi, the agent of Chagas disease in humans. In this study, we compared the demographic parameters of M. spinolai with and without T. cruzi infection. We collected the immature life table data of 479 M. spinolai individuals of control cohort (reared on mice without T. cruzi infection) and 563 M. spinolai individuals of treatment cohort (reared on mice with T. cruzi infection). Nymphs were maintained in individual compartments inside a growth chamber (26°C; 65–75%) until adult emergence; moulting and survival were recorded daily. For the adult life table study of the control, we used 24 pairs of adults from the control cohort. For the adult life table study of T. cruzi‐infected cohort, 25 infected females were paired with 25 males from the control cohort. Life table data were analysed using bootstrap‐match technique based on the age‐stage, two‐sex life table. The preadult survival rate (0.5282) of the control cohort was significantly higher than that of the infected cohort (0.2913). However, the mean fecundity of reproductive females (Fr = 22.29 eggs/♀) and net reproductive rate of population (R0 = 5.07 offspring/individual) of the 0.5th percentile bootstrap‐match control cohort were not significantly different from those of the infected cohort (Fr = 23.35 eggs/♀, R0 = 3.77 offspring/individual). Due to the shorter total preoviposition period and higher proportion of reproductive female, the intrinsic rate of increase (r = 0.0053 d−1) and finite rate of increase (λ = 1.0053 d−1) of control cohort of M. spinolai were significantly higher than those of the T. cruzi‐infected cohort (r = 0.0035 d−1, λ = 1.0035 d−1). These results suggest that T. cruzi infection reduces the population fitness of the Chagas disease vector M. spinolai. [ABSTRACT FROM AUTHOR]

Published
2024
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16. Discrete Typing Units of Trypanosoma cruzi Identified by Real-Time PCR in Peripheral Blood and Dejections of Triatoma infestans Used in Xenodiagnosis Descriptive Study

Author

Zulantay, Inés, primary, Muñoz, Gabriela, additional, Liempi, Daniela, additional, Rozas, Tamara, additional, Manneschi, María José, additional, Muñoz-San Martín, Catalina, additional, Botto-Mahan, Carezza, additional, Apt, Werner, additional, and Cabrera, Gonzalo, additional

Published
2022
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34. Ectoparasites of the endemic rodent Abrocoma bennetti (Hystricomorpha: Abrocomidae) from semiarid Chile

Author

Yáñez-Meza, Andrea, Moreno, Lucila, and Botto-Mahan, Carezza

Abstract

A total of 13 individuals of the rodent Abrocoma bennetti were captured and 354 ectoparasites belonging to 10 different species were collected and analyzed. The most abundant species was the Phthiraptera Monogyropus longus (61.54%), followed by the Siphonaptera Neotyphloceras chilensis (38.46%). In this study Gyropus distinctus (15.38%) is reported as new record for A. bennetti, previously described for Octodon degus, a rodent usually living in sympatry with A. bennetti. For the first time the flea Delostichus smiti, and the mites Ornithonyssus sp. and Androlaelaps fahrenholzi are recorded in this rodent species. RESUMEN Se capturó un total de 13 individuos del roedor Abrocoma bennetti y 354 ectoparásitos de 10 especies diferentes fueron recolectados y analizados. La especie más abundante fue el phthiraptero Monogyropus longus (61,54%), seguido por el sifonáptero Neotyphloceras chilensis (38,46%). En este estudio Gyropus distinctus (15,38%) es reportado como nuevo registro para A. bennetti, descrito previamente en Octodon degus, un roedor que usualmente vive en simpatría con A. bennetti. Se registran por primera vez la pulga Delostichus smiti y los ácaros Ornithonyssus sp. y Androlaelaps farhenholzi en esta especie de roedor.

Published
2018

37. Spatio-temporal characterization of Trypanosoma cruzi infection and discrete typing units infecting hosts and vectors from non-domestic foci of Chile

Author

Ihle-Soto, Camila, primary, Costoya, Eduardo, additional, Correa, Juana P., additional, Bacigalupo, Antonella, additional, Cornejo-Villar, Berenice, additional, Estadella, Viviana, additional, Solari, Aldo, additional, Ortiz, Sylvia, additional, Hernández, Héctor J., additional, Botto-Mahan, Carezza, additional, Gorla, David E., additional, and Cattan, Pedro E., additional

Published
2019
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44. Bloodmeal‐stealing in wild‐caught Mepraia spinolai (Hemiptera: Reduviidae), a sylvatic vector of Trypanosoma cruzi.

Author

Garrido, Rubén, Campos‐Soto, Ricardo, Quiroga, Nicol, and Botto‐Mahan, Carezza

Subjects
ASSASSIN bugs, TRYPANOSOMA cruzi, CHAGAS' disease, HEMIPTERA, CONENOSES, STINKBUGS
Abstract

1. Blood‐feeding bugs in the Triatominae are the vectors of Trypanosoma cruzi, the etiological agent of Chagas disease. Mepraia is a sylvatic genus endemic to Chile that transmits T. cruzi in the wild cycle. 2. Bloodmeal‐stealing (or 'cleptohaematophagy') is the stealing of a bloodmeal from one bug's gut by another, usually conspecific bug. Bloodmeal‐stealing can result in horizontal transmission of T. cruzi between triatomines; so far, it has been reported only in laboratory‐reared bugs. 3. We performed short laboratory experiments to test whether bloodmeal‐stealing occurs between wild‐caught Mepraia spinolai nymphs. Successful bloodmeal‐stealing was observed in one out of 17 trials (2/102 bugs). Even though bloodmeal‐stealing was not frequent in wild‐caught M. spinolai, this behaviour might contribute to explaining the maintenance of wild T. cruzi cycles. [ABSTRACT FROM AUTHOR]

Published
2021
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46. Natural Infection of Leptospira Species in the Native Rodents Degu (Octodon degus) and Darwin's Pericote (Phyllotis darwini) in Mediterranean Ecosystem of Chile

Author

Correa, Juana Paola, primary, Bacigalupo, Antonella, additional, Botto-Mahan, Carezza, additional, Bucarey, Sergio, additional, Cattan, Pedro Eduardo, additional, de Cortázar, Rodrigo García, additional, Landaeta-Aqueveque, Carlos, additional, and Ramírez-Estrada, Juan, additional

Published
2017
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49. Stridulation in the wild kissing bug Mepraia spinolai: description of the stridulatory organ and vibratory disturbance signal

Author

Quiroga, Nicol, Muñoz, Matías I., Pérez-Espinoza, Samuel A., Penna, Mario, and Botto-Mahan, Carezza

Abstract

ABSTRACTStridulation is a type of communication in which a mechanical signal is emitted by the friction of two rigid structures. Stridulation is present in kissing bugs (Reduviidae: Triatominae), where the friction of the proboscis against the prosternal stridulatory sulcus generates a vibroacoustic signal. In the present study, we combine microscopy techniques with laser Doppler vibrometry recordings to describe the morphology of the stridulatory sulcus and the vibratory disturbance signal emitted by the kissing bug Mepraia spinolai. We describe the morphology of the female sulcus, and those of the three alary morphotypes present in males (micropterous, brachypterous, and macropterous). The vibratory disturbance signal was measured in females and micropterous males. The sulcus shape and location are similar to other triatomine species. The number of ridges is higher, and the distance between them is shorter in M. spinolaias compared to other triatomine species. We found morphological differences between alary morphotypes but did not between sexes. Stridulation consisted of two chirps of different duration and spectral composition. Also, the spectral properties differed between sexes. Females presented higher frequency components. The association between morphology and signal structure is unclear in triatomines, and further studies are required to elucidate the biomechanics of kissing bug stridulation.

Published
2020
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50. New insights on the mistletoe Tristerix aphyllus (Loranthaceae): interaction with diurnal and nocturnal frugivorous species

Author

LUCERO, FRANCISCO, BOTTO-MAHAN, CAREZZA, MEDEL, RODRIGO, and FONTÚRBEL, FRANCISCO E.

Abstract

Se estudiaron los visitantes de las infrutescencias de Tristerix aphyllus, un muérdago parásito de cactáceas. La mayoría de los visitantes fueron aves diurnas (cinco especies), especialmente el dispersor legítimo Mimus thenca. También se registraron dos especies de pequeños mamíferos nocturnos, llamando la atención el marsupial Thylamys elegans, cuyo rol como dispersor es aún desconocido.

Published
2014

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