Occurrence of Toxorhynchites guadeloupensis (Dyar Knab) in oviposition trap of Aedes aegypti (L.) (Diptera: Culicidae).

Autor(es): Hon?³rio Nildimar A; de Barros F?!bio S M; Tsouris Pantelis; Rosa-Freitas Maria G

Resumo: Toxorhynchites guadeloupensis (Dyar Knab), a poorly known mosquito species, was observed preying upon Aedes aegypti (L.) larvae, in an oviposition trap placed for routine dengue entomological surveillance, during 2003-2004 in the urban area of Boa Vista, Roraima, Brazil. This is the first report for Tx. guadeloupensis using Ae. aegypti oviposition traps as breeding places. This finding may have important consequences in the epidemiology and local dengue control since Ae. aegypti density is a basic variable in dengue prediction. Whether predation of Ae aegypti by Tx. guadeloupensis in the Amazon is of significance, is a question to be examined. Also, larval predation may be a cause for underestimation of the actual Ae aegypti numbers. Together these hypotheses need to be better investigated as they are directly related to dengue epidemiology, to the success of any outbreak prediction and surveillance program.

Palavras-Chave: Predation; Dengue; Prediction; Control; Immature form

Imprenta: Neotropical Entomology, v. 36, n. 5, p. 809-811, 2007

Identificador do objeto digital: 10.1590/S1519-566X2007000500025

Descritores: Aedes aegypti - Pathogenesis ; Aedes aegypti - Dengue ; Aedes aegypti - Epidemiology

Data de publicação: 2007