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Title: Factors controlling the volume of feces produced by triatomine vectors of Chagas' disease
Authors: Piesman, Joseph
Sherlock, Ítalo Rodrigues de Araújo
Affilliation: Harvard School of Public Health. Department of Tropical Public Health. Boston. Massachusetts, USA
Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil
Abstract: Triatomine species influenced volume of feces produced; Triatoma dimi¬ diata produced the largest volume of feces followed by Panstrongylus megistus. Rhodnius prolixus. and Triatoma infestans. Moreover, stage and sex affected fecal production: 5th-stage female nymphs excreted the largest volume of feces. The amount of blood ingested was significantly correlated with the volume of feces produced in 10 out of 11 experimental groups. Triatome size and volume of feces produced were less closely correlated. Indeed, a "threshold" minimum amount of blood must be ingested before bugs are stimulated to defecate. The defecation habits of triatomines probably influence the vectorial capacity of a triatomine species to a lesser degree than do the density of domestic infesta¬ tions, host affinity, and the degree of adaptation to the domestic habitat.
Keywords: Triatomines
Trypanosoma cruzi
Chagas' disease
keywords: Triatomíneos
Trypanosoma cruzi
Doença de Chagas
Issue Date: 1983
Publisher: Elsevier
Citation: PIESMAN, J.; SHERLOCK, I. R. A. Factors controlling the volume of feces produced by triatomine vectors of Chagas' disease. Acta Tropica, v. 40, p. 351-358, 1983.
ISSN: 0001-706X
Copyright: open access
Appears in Collections:BA - IGM - Artigos de Periódicos

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