Immature culicidae (Diptera) collected from the Igapó lake located in the urban area of Londrina, Paraná, Brazil

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.<br>O lago Igapó é um conjunto de quatro represas localizadas na área urbana de Londrina, Paraná, Brasil, com condições propícias para procriação de culicídeos. A presente pesquisa teve como objetivo verificar a culicideofauna de imaturos neste lago, monitorando possíveis vetores de agentes patogênicos. Durante um ano coletou-se 962 imaturos que se distribuíram nos seguintes gêneros: Anopheles (59,36%), Culex (19,65%) Aedeomyia (19,23%) Aedes (1,50%), and Uranotaenia (0,10%). As espécies mais abundantes foram Anopheles strodei, Aedeomya squamipennis, Culex. (Melanoconium) spp., Culex mollis, Anopheles oswaldoi, Anopheles evansae, Culex coronator, Culex quinquefasciatus, Anopheles argyritarsis e Aedes terrens respectivamente. An. strodei, prevaleceu com grandes médias populacionais de Julho a Setembro, mostrando uma correlação linear negativa em relação a precipitação. Ad. squamipennis, mostrou uma correlação linear positiva com a temperatura, com baixos índices populacionais nos meses de Junho, Agosto e Setembro de 1997. As populacões de Cx. (Melanoconium) spp. foram constantes ao longo do ano. Conclui-se que lago localizado na área urbana com condições para o desenvolvimento de culicídeos, podem trazer problemas para a qualidade de vida da população, e recomenda-se medidas para melhoria da qualidade destes ecossistemas

Little noticed, but very important: The role of breeding sites formed by bamboos in maintaining the diversity of mosquitoes (Diptera: Culicidae) in the Atlantic Forest biome

“…titillans ), a genus often dominant in breeding sites of this kind [ 73 ]. Meanwhile, Lopes et al [ 74 ] collected 17 mosquito taxa from a lake of an Atlantic Forest fragment under strong anthropic influence. Despite the presence of aquatic plants in the sampled lake, we did not collect any larvae from the roots of these plants, as the present collections were limited to the margins as far as the dippers reached.…”

“…This methodology could explain the low number of Mansonia specimens collected. In addition, in the study conducted by Lopes et al [ 74 ], the sampling effort was extended beyond the shores of the lake, which increased the chances of collecting a greater number of species.…”

Temperature Effects on the Immature Development Time of Culex eduardoi Casal & García (Diptera: Culicidae)

“…The southern most limit of its distribution was extended from 34°S (Mitchell & Darsie 1985) to 45°S (Burroni et al2007), with records either on natural or arti icial habitats (Forattini et al 1993, Fischer et al 2000, Vezzani et al 2001, Lopes 2002. Culex eduardoi was also reported as the most abundant mosquito species and its presence was documented throughout the year in Buenos Aires, Argentina (34° 33′S, 58° 29′W) (Fischer et al 2000) and Londrina, Parana State, Brazil (23°23'S, 51°11'W) (Lopes 1997a).…”

Meteorological Effects of Green Infrastructure on a Developing Medium Latin American City: A Numerical Modeling Assessment

“…Therefore, these findings suggest that the implementation of urban lakes for the exclusive purpose of mitigating the effects of urbanization on air humidity and temperature is not appropriate. However, it is important to note that the lake area and its surroundings benefit the inhabitants, since they are the main outdoor activities, recreation, and leisure [92][93][94][95][96].…”