Ecology and Biology of Tabanidae Flies in Khartoum State

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Sawsan Sayed Mohamed Ahmed, Ahmed
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Studies to investigate ecology of Tabanid flies were carried out in Soba area from March 1994 to March 1995 on seasonal abundance of Tabanidae. Tabanids were collected from Soba area using F3 and Canopy traps. Atylotus agrestis, Tabanus sufis, Musca domestica, Stomoxys and Digger wasp were encountered inside the traps. T. taeniola were frequently observed but never inside traps. The abundance of A. agrestis and T. sufis was 30.95% and 7.13%, respectively during August. The flies were normally active during late afternoon (1300-1500 hours). The activity increased and directly with sunlight and temperate rise and decreased when temperature dropped towards sunset and in early morning. The breeding sites and larvae behaviour were also identified. The larvae reared in laboratory showed an average larval period of 21 days and pupil periods ranged from 7-10 days. Dissection of Atylotus spp. did not reveal presence of trypanosomes in the gut, salivary glands or proboscis. Its absence does not exclude their incrimination entirely in mechanical transmission. Digger wasps Bombix olivacae are found predatory and in consequence considered natural enemies.
Ecology and Biology of Tabanidae Flies in Khartoum State