Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/30647
Title: Biology of Triatoma sherlocki (Hemiptera: Reduviidae) Under Laboratory Conditions: Biological Cycle and Resistance to Starvation
Authors: Neiva, Vanessa Lima
Gonçalves, Teresa C. M.
Bastos, Leonardo S.
Gumiel, Marcia
Correia, Nathália C.
Silva, Catia C.
Almeida, Carlos E.
Costa, Jane
Affilliation: Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biodiversidade Entomológica. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório Interdisciplinar de Vigilancia Entomológica em Diptera e Hemiptera. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Programa de Computação Científica. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Bioquímica e Fisiologia de Insetos. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biodiversidade Entomológica. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Transmissores de Hematozoários. Rio de Janeiro, RJ. Brasil.
Universidade Estadual Paulista. Faculdade de Ciências Farmacêuticas. Departamento de Ciências Biológicas. Laboratório de Parasitologia. São Paulo, SP, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biodiversidade Entomológica. Rio de Janeiro, RJ. Brasil.
Abstract: Triatoma sherlocki Papa, Jurberg, Carcavallo, Cerqueira & Barata was described in 2002, based on specimens caught in the wild in the municipality of Gentio do Ouro, Bahia, Brazil. In 2009, nymphs and adults were detected inside homes and sylvatic specimens were positive for Trypanosoma cruzi (Chagas). No information on the bionomics of T. sherlocki exists, although such data are considered essential to estimate its vector and colonization potential in domestic environments. Herein, the biological cycle of T. sherlocki was studied based on 123 eggs, with nymphs and adults fed on Mus musculus (Linnaeus). Nymphal development time phases, number of meals consumed, and stage-specific mortality rates were analyzed. Survival time under starvation conditions was measured between ecdysis and death among 50 nymphs (first to fifth instar) and 50 male and female adults. The median development time from egg to adult was 621.0 (CI: 489-656) d. The number of meals consumed ranged from 1 to 20 for nymphs of the first to fifth instar. The fifth instar showed the greatest resistance to starvation, with a mean of 156.5 d. The high number of meals consumed by T. sherlocki favored infection with and transmission of T. cruzi. The full development of this species under laboratory conditions with a low mortality rate indicates that this vector presents biological characteristics that may contribute to its adaptation to artificial human ecotopes. Its high resistance to starvation emphasizes the importance of entomological surveillance for this species.
Keywords: Chagas disease
vector
biological factor
food deprivation
keywords: Doença de Chagas
Vetor
Fator biológico
privação de alimentos
Issue Date: 2017
Publisher: Oxford University Press
Citation: NEIVA, Vanessa Lima; et al. Biology of Triatoma sherlocki (Hemiptera: Reduviidae) Under Laboratory Conditions: Biological Cycle and Resistance to Starvation. Journal of Medical Entomology, v.54, n.4, p. 831–836, 2017..
DOI: 10.1093/jme/tjw249
ISSN: 0022-2585
Copyright: restricted access
Appears in Collections:IOC - Artigos de Periódicos

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