Abstract
The effects of constant and varying temperatures from 18 oC to 35 oC and diet on longevity of Bracon hebetor (Say, 1836) (Hymenoptera: Braconidae) were investigated. Ephestia kuehniella (Zeller, 1879) (Lepidoptera: Pyralidae) larvae were used as host. Adults were provided with one of the three food types: host larvae, honey solution (50%) or host larvae+honey solution. Temperature had a significant effect on the longevity of female and male parasitoids. The longest longevity of both sexes occured when adults reared at 18 oC. Increasing the temperature from 18 oC to 35 oC decreased the longevity. Adults reared at fluctuating temperatures lived considerably shorter than those reared at 18 oC and 25 oC, but longer than at 35 oC. Longevity also was significantly affected by diet in both sex of parasitoid. Honey feeding to adult parasitoids increased their longevity. They lived the longest at 18 oC and the shortest at 35 oC. Females fed with all food types in different temperatures lived longer than males.
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