The distribution of Aedes aegypti (Diptera,culicidae) in eight selected parks of Lahore,using oviposition traps during rainy season

Objective: to investigate the seasonal distribution of immature habitat of aedes aegypti mosquito species and its association with environmental and climatic conditions. methods: this descriptive study was conducted in eight parks in lahore,pakistan,over three years from 2011 to 2013.a total of 2,496 ovitraps were placed in environmentally different conditions near water channels,thick vegetation cover/shades,clean/unclean sites and places where there was lot of human activity. each trap was monitored weekly in early rainy,late rainy,early post-rainy and late post-rainy seasons of each of the three years to determine the presence of aedes aegypti larvae by measuring ovitrap index. spss19 was used for data analysis. results: the value for ovitrap index was found highest in late rainy season α20.83). high association was observed with environmental conditions αp<0.05) as this index was high in micro-habitats close to water channels,shades and residences. the association of ovitrap index with water channel,vegetation cover,cleanliness and human activity was significant in all four seasons αp=-0.000). with temperature,this association was significant only in early post-rainy αp=-0.000) and late post-rainy seasons αp=0.024). with humidity,it was significant in early post-rainy and late post-rainy seasons αp=-0.000 and p=0.024) while with rainfall,the association was significant in all seasons αp=0.000). conclusion: abundance and occurrence frequency of aedes aegypti had a positive association with deteriorating environmental and seasonal climatic conditions. © 2017,pakistan medical association. all rights reserved.