Environmental Control of Ovarian Development in Mosquitoes of the Culex pipiens Complex

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Abstract
Gonotrophic dissociation, a condition in which the ovaries remain undeveloped in female mosquitoes that have taken a full blood meal, occurs in Culex pipiens L., when incubated at low temperature (10° to 15°C) with short photoperiod and held at low temperature after feeding. Gonotrophic dissociation occurred sporadically in Culex quinquefasciatus Say after conditioning by low temperature, irrespective of photoperiod. Two major considerations are posed: first, the importance of gonotrophic dissociation to hibernation potential; and, second, the potential of a hibernating female mosquito to serve as a virus reservoir.