Role of Ten Dietary Vitamins on Fecundity of the ParasitoidExeristes comstockii(Cresson) (Hymenoptera: Ichneumonidae)

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Abstract
Feeding tests with the adults ofExeristes comstockii(Cress.) on chemically defined diets showed that, of ten B-vitamins omitted singly, only three, panthothenic acid, folic acid and thiamine, were needed for maximal egg production and maximal numbers of eggs contained in ovaries. Egg production on a diet with only these three vitamins was similar to that on a control with all B-vitamins, but egg viability was significantly lower. Addition of α-tocopherol did not increase fecundity or egg viability. Vitamin-starved females partly recovered ovarian function when fed tissues ofGalleria mellonellaL.