Reproduction in the Mediterranean Fruit Fly:1 Depletion of Stored Sperm in Females

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Abstract
Recent work has shown that several supposedly polygamous insects are in effect monogamous for much of their lives. Riemann etal. (1967), working with castrated males, demonstrated that female monogamy in the house fly, Musca domestica L., is caused by material from the male ejaculatory duct. In further work Riemann and Thorson (1969) concluded “the effects of the accessory material are essentially quantitative and that increasing amounts of the material produce increased effects ” Tauber (1968) observed that females of Fannia femoralis (Stein) would not remate once inseminated. Barton Browne (1957) found that mated female Dacus (Strumeta) tryoni (Froggatt), the so-called Queensland fruit fly, repel any subsequent attempts at coitus by males. Tzanakakis et al. (1968) working with the tephritid Dacus oleae (Gmelin), the olive fruit fly, found that most females mated about twice in their lives with about 28 days between matings. They speculated that a substance transferred in the semen inhibited subsequent mating; other evidence led them to believe that those females which mated 3 times did so because insufficient inhibiting substance had been transferred at the 1st mating.

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