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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 94, No. 4, 1999, pp. 565-569
Bioline Code: oc99103
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 94, No. 4, 1999, pp. 565-569

 en Changes in the Sexual Dimorphism of Triatominae in the Transition from Natural to Artificial Habitats
JP Dujardin; M Steindel; T Chavez; M Machane & CJ Schofield


A shift from large to small average sizes was observed in Triatoma infestans and Rhodnius domesticus between field and domestic (or laboratory) conditions of life. It was more pronounced in the female specimens, leading to a subsequent reduction of sexual size dimorphism. This feature is discussed in terms of genetic and populational changes occurring from natural to artificial habitats, in particular those related to population densities. Sexual size dimorphism is then recommended as a new character to be used in the study of species of Triatominae adapting to domestic ecotopes.

Triatominae - sexual size dimorphism - silvatic - domestic - laboratory

© Copyright 1999 Fundacao Oswaldo Cruz - Fiocruz
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