Effect of temperature and vector nutrition on the development and multiplication of Trypanosoma rangeli in Rhodnius prolixus

dc.creatorFerreira, Roberta Carvalho
dc.creatorTeixeira, Cínthia Firmo
dc.creatorSousa, Vinícius Fernandes Aparecido de
dc.creatorGuarneri, Alessandra Aparecida
dc.date2018-09-06T13:36:51Z
dc.date2018-09-06T13:36:51Z
dc.date2018
dc.date.accessioned2023-09-26T20:14:58Z
dc.date.available2023-09-26T20:14:58Z
dc.identifierFERREIRA, Roberta Carvalho et al. Effect of temperature and vector nutrition on the development and multiplication of Trypanosoma rangeli in Rhodnius prolixus. Parasitol Res., v. 117, n. 6.p. 1737-1744, 2018
dc.identifier0932-0113
dc.identifierhttps://www.arca.fiocruz.br/handle/icict/28582
dc.identifier10.1007/s00436-018-5854-2
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8852430
dc.descriptionTrypanosoma rangeli is a protozoan parasite that infects mammals and triatomines, causing different levels of pathogenicity in its invertebrate vectors, particularly those from the genus Rhodnius. We have recently shown that temperature can modulate T. rangeli growth during in vitro culture, as well as its in vivo pathogenicity to R. prolixus. In the present study, we investigated colonization of R. prolixus by T. rangeli and assessed the role of temperature and vector nutrition on parasite development and multiplication. We infected nymphs and either assessed parasite density in the first hours after the ingestion of the infected blood or maintained the nymphs for up to 60 days at different temperatures (21, 24, 27, and 30 °C) and under different blood-feeding schedules (either every 15 days, or on day 30 post infection only), with parasite development and multiplication measured on days 15, 30, and 60 post infection. In the first hours after ingesting infected blood, epimastigogenesis not only occurred in the anterior midgut, but a stable parasite population also established in this intestinal region. T. rangeli subsequently colonized all intestinal regions examined, but with fewer parasites being found in the rectum. The number of parasites was only affected by higher temperatures (27 and 30 °C) during the beginning of the infection (15 days post infection). Nutritional status of the vector also had a significant effect on parasite development, as reduced blood-feeding decreased infection rates by approximately 30%.
dc.description2024-01-01
dc.formatapplication/pdf
dc.languageeng
dc.publisherSpringer International
dc.rightsrestricted access
dc.subjectRhodnius prolixus
dc.subjecttemperatura
dc.subjectTrypanosoma rangeli
dc.subjectRhodnius prolixus
dc.subjectTemperature
dc.subjectTrypanosoma rangeli
dc.titleEffect of temperature and vector nutrition on the development and multiplication of Trypanosoma rangeli in Rhodnius prolixus
dc.typeArticle


Este ítem pertenece a la siguiente institución