Abstract
The Igapó lake dam is located in an urban area in Londrina, Paraná, Brazil. A one year study of the Culicidae immature forms was conducted in this ecosystem. From a total of 962 collected larvae following genera were identified: Anopheles (59.36%), Culex (19.65%) Aedeomyia (19.23%) Aedes (1.50%), and Uranotaenia (0.10%). The 10 most abundant species were Anopheles strodei, Aedeomyia squamipennis, Culex (Melanoconium) spp., Culex mollis, Anopheles oswaldoi, Anopheles evansae, Culex coronator, Culex quinquefasciatus, Anopheles argyritarsis and Aedes terrens respectively. An. strodei prevailed with greater averages during July and September, showing a significant negative lineal correlation in relation to the rainfall. Ad. squamipennis showed a positive lineal correlation with the temperature with smaller population averages during June, August and September of 1997. Cx. (Melanoconium) spp. populations were constant throughout the year. High Culicidae population density could bring problems to quality of human life, thus strong measures to avoid and control of mosquito population growth in the lake are recommended.
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