IDENTIFICATION OF FIVE CULICINE LARVAE DETECTED IN SOHAG
Nada A. El-Nadi1, Hanaa A. El-Hady1, Fatma G. Sayed2 and Fatin A. Hassan1
1Parasitology departments, Faculty of Medicine (Sohag), South Valley University
Mosquitoes are the most important world-wide spread insect vectors of human disease. Earlier studies were done to detect the commonest species in most Egyptian Governorates. This study included 7 localities in Sohag Governorate to detect the prevailing mosquito species along a period of four seasons. The present work involved the study of one thousand and one culicine mosquito larvae collected from suspicious water collections. The collected larvae included: Culex pipiens molestus, Culex pusillus, Culex antennatus, Aedes caspius and Culiseta longiareolata. Larvae were more prevalent in Summer (41%) with a highly significant value (P=0.004), Winter (31.3%), Autumn (19.3%) then spring (8.4%). Culex pipiens molestus was the dominating species with very high significance (P= 0.00005) reached its maximum rates during summer (276/748= 36.9%) (P=0.004) and preferred sewage water (45.9%), drains and small water collections (41.7%) then the Nile and big canals (12.4%). Culex pusillus reached its maximum rates during summer (65/90= 72.2%) and preferred drains and small water collections (77.8%) than sewage water (22.2%). Culex antennatus reached its maximum rates during autumn (24/62= 38.7%) and preferred sewage water (77.4%) than drains and small water collections (12.6%), Aedes caspius reached its maximum levels during summer (52/97 = 53.6%) and preferred sewage water (77.1%), drains and small water collections (14.6%) then, the Nile and big canals, while Culiseta longiareolata larvae were collected in spring in small water collections. It is worth mentioning that Culex pipiens molestus larvae were studied by scanning electron microscope which added valuable knowledge to their morphological features.