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蝇蛹金小蜂Pachycrepoideus vindemmiae Rondani是家蝇Musca domestica蛹期常见寄生蜂种类。本文探讨蝇蛹金小蜂对寄主日龄的选择策略以及该寄生蜂的寿命、产卵历期和后代数量等规律。结果表明寄生蜂可利用各日龄的蝇蛹,寄生高龄期蝇蛹时,寄生蜂后代产量显著降低,既未出蜂也未出蝇的死亡蝇蛹比例显著增加;寄生蜂寿命为(11.89±6.99)d,产卵历期为(9.58±6.67)d,单个雌蜂后代产量为(33.74±18.08)头,雄性后代的发育历期显著短于雌性后代,随着寄生蜂产卵历期的延长,寄生蜂后代产量下降,雄性后代比例增加。
Pachycrepoideus vindemmiae Rondani is a common parasitoid species in Musca domestica pupae. This article explores the selection strategy of P. pujinum for its host age, the longevity of the parasitoid, the duration of oviposition and the number of offspring. The results showed that the parasitoid was able to utilize the fly pupae at various ages and parasitoid offspring yield was significantly reduced when the parasitoid was fed on the parasitoid. The proportion of dead fly pupal both without and without fly increased significantly. The parasitoid was (11.89 ± 6.99) d. The duration of oviposition was (9.58 ± 6.67) d. The progeny of a single female was (33.74 ± 18.08) d and the male offspring had a significantly shorter developmental period than the female. With the development of parasitoid Prolonged, the parasitic wasps offspring yield decreased, the proportion of male offspring increased.