Abstract

Mosquitoes maintained on water from emergence were less likely to develop eggs after a blood meal compared to those maintained on sucrose, and those carbohydrate-deprived females that did develop eggs were more likely to approach a host while gravid than those fed sucrose. When small blood meals were ingested, the proportion of carbohydrate-deprived gravid females approaching a host was increased even further. The ingestion of a single meal of sucrose influenced both egg maturation and the behaviour of the gravid mosquitoes, but its effect varied according to when the sugar was ingested. Although the initial step of host-seeking inhibition is ovarian dependent, implantation of ovaries from starved females into sugar-fed ovariectomized hosts demonstrated that this step is not affected by starvation.

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