Observations on the reproductive biology ofAedes (Ochlerotatus) fryeri(Theo.) (Diptera, Culicidae)

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Abstract
Aedes (Ochlerotatus) fryeri(Theo.) was found developing in saline pools on the coastal margins of coral islands near Dar es Salaam, Tanzania. Females were autogenous in the first ovarian cycle and anautogenous in the second ovarian cycle. The existence of autogeny was confirmed by examination of females reared from field-collected pupae and of the age structure of the population of females landing and biting. All females receiving carbohydrate and most females receiving only water as adults exhibited autogeny; only parous females were caught attempting to take blood. Water-fed females (and to a lesser extent, carbohydrate-fed females) showed a high incidence of follicular regression in the first gonotrophic cycle. The possible adaptive significance of autogeny inA. fryeriis briefly discussed.

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