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Oviposición reducida de hembras grávidas de Aedes aegypti en contenedores domésticos con peces depredadores
Author(s) -
Pamplona Luciano de Góes Cavalcanti,
Alencar Carlos H,
Lima José Wellington O.,
Heukelbach Jörg
Publication year - 2009
Publication title -
tropical medicine and international health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.056
H-Index - 114
eISSN - 1365-3156
pISSN - 1360-2276
DOI - 10.1111/j.1365-3156.2009.02377.x
Subject(s) - poecilia , biology , aedes aegypti , predation , fish <actinopterygii> , aedes , zoology , netting , larva , veterinary medicine , toxicology , ecology , fishery , medicine , political science , law
Summary The presence of pathogens or predators in water may alter oviposition behaviour of gravid female Aedes aegypti mosquitoes. We evaluated the oviposition behaviour of A. aegypti in recipients containing larvivorous fish ( Betta splendens and Poecilia reticulata ). In four breeders, fish specimens were placed in 15 l of dechlorined water. Four control breeders only contained dechlorined water. Breeders with eucatex ovitraps and approximately 100 male and female mosquitoes were placed in wire netting cages. During a period of 7 weeks, eggs on the ovitraps were counted weekly. The median number of eggs laid in recipients with B. splendens (32.5/week) was lower than in those with P. reticulata (200.5/week) and the control group (186.5/week; P < 0.0001). The oviposition activity index (OAI) for P. reticulata did not show any considerable difference between posture in deposits with and without fish (‐0005). Deposits with B. splendens showed a lower position than those used as controls (‐0627). We conclude that B. splendens can be used to effectively prevent gravid A. aegypti females from laying eggs in large water containers.