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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 95, No. 2, 2000, pp. 151-155
Bioline Code: oc00026
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 95, No. 2, 2000, pp. 151-155

 en Population Dynamics and Feeding Behavior of Triatoma brasiliensis and Triatoma pseudomaculata, Main Vectors of Chagas Disease in Northeastern Brazil
Rodrigo Pedro Pinto Soares; Luciene das Graças Evangelista; Luciano Soares Laranja & Liléia Diotaiuti

Abstract

Biological parameters of Triatoma brasiliensis and T. pseudomaculata that could influence the epidemiological importance of these insects as vectors of Trypanosoma cruzi were compared. The parameters studied were incubation period, interval between hatching or moulting and first feeding, number of blood meals, development time, mortality, net reproductive rate, instantaneous daily reproductive rate, time-lapse before starting feeding, duration of feeding, blood ingestion capacity, occurrence of defecation and blood ingestion velocity. Most aspects of feeding were similar for the two species, although T. pseudomaculata had a longer life cycle than T. brasiliensis producing one and two generations per year, respectively. The two species had similar instantaneous daily rates of population growth.

Keywords
Triatoma brasiliensis - Triatoma pseudomaculata - population dynamics - feeding behavior - Brazil

 
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