Seasonal prevalence of anopheline mosquito larvae in some Governorates of Egypt

ABSTRACT

The seasonal prevalence of Anopheline mosquito larvae was studied in several governorates of Egypt. The results of the present investigations indicated that 1].The values of the larval density of Anopheles pharoensis and Anopheles constant significantly fluctuated throughout the different seasons in the following governorates Kafr El-Sheikh, Damietta, Sharqiya, Canal Zone and Faiyum. However, they decreased from January to April and they were less abundant during February and March. 2] The seasonal larval density of both Anopheles pharoensis and Anopheles constant were significantly influenced with the temperature of the breeding water. 3] The cultivated vegetation of the breeding sites in the localities studied affected the fluctuations of the larval density of Anopheles pharoensis and Anopheles coustani. Anopheles pharoensis larvae were more abundant in rice fields. They disappeared in the absence of rice fields, while larvae of Anopheles constant were abundant in breeding places where short dispersed floating water lents and grass were encroached