Studies on the breeding habitats and seasonal prevalence of larval population of Aedes aegypti (L.) and Aedes albopictus (skuse) in Dacca city.

An one-year study was conducted on the outdoor breeding habitats and seasonal prevalence of larval populations of Aedes aegypti and Aedes albopictus in ten different locations of Dacca city. Nine locations were found infested with larvae of either one or both species during the rainy season (May to October) of the year. A total of 1898 containers/sites were surveyed out of which 86 (4.53%) were infested with either one or both species. Out of then different kinds of artificial containers and natural habitats surveyed, Ae. albopictus larvae were present in nine including all four natural sites resulting in highest number and per cent (54, 62.8%) of albopictus infested container in the city. Ae aegypti larvae were present in only four kinds of artificial containers. Earthen pot was the most numerous breeding habitat (24.3%, 461) and contributed the highest number of infested container (45.3%, 39) Seasonal variations in the larval population of both species closely followed the fluctuations in rainfall with zero population during the driest three months.