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Abstract
Culex pipiens (L.) ie the most abundant mosquito in the
Nile Valley and the Delta, breed in all sorts of water (Gad
and Salit, 1972; Shalaby, 1972; Arafa and Salit, 1973; El-Said,
1974 and Sadek 1975).
The gonotrophic cycle of mosquitoes are complex, and various
biological aspects such as mating, feedi.ng and oviposition
must be included in any study. A complete understanding of the
cycle is necessary not only to derive the exterinsio cycle of
disease transmission or to estimate the survival rate from the
parous rate but also, to detezmine the reproductive potentiality
of any population (Laurence, 1963 and Samarawickrema, 1967).