Trichopria drosophilae Perkins (Hymenoptera: Diapriidae) is a cosmopolitan endoparasitoid of the pupal stages of Drosophila suzukii Matsumura (Diptera: Drosophilidae) and other Drosophila species around the world. It is also considered as a potential biocontrol agent of this pest. Here we describe the effects of three hosts (D. suzukii, Drosophila melanogaster Meigen, and Drosophila immigrans Sturtevant) on the demographic parameters of T. drosophilae. Adult female T. drosophilae that emerged from D. immigrans and D. suzukii were larger than those that emerged from D. melanogaster. Fertility was 18% greater for T. drosophilae that developed on D. immigrans and D. suzukii, compared with those developing on D. melanogaster. The net reproductive rate of T. drosophilae was higher on D. immigrans and D. suzukii (R₀ = 25.25 and 26.51) than on D. melanogaster (R₀ = 22.53). However, the generation time was longer on D. immigrans and D. suzukii (T = 20.38 and 19.59 days, respectively) than on D. melanogaster (T = 17.20 days), perhaps due to their larger size. This favored the intrinsic rate of natural increase of T. drosophilae reproducing on D. melanogaster (r_m = 0.181) compared with those reproducing on D. immigrans and D. suzukii (r_m = 0.158 and 0.167, respectively). Parasitism rate of D. suzukii by T. drosophilae was 53% regardless of the host species from which the parasitoid had emerged. The implications of these results are discussed in the context of biological control of D. suzukii.

中文翻译：

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三个寄主物种中果蝇毛滴虫的人口统计参数

果蝇毛滴虫（Trichopria drosophilae Perkins）（膜翅目：双翅目科）是世界性的内寄生蜂，寄生于果蝇铃木松村（Diptera：Drosophilidae）和世界各地的其他果蝇的the期。它也被认为是这种害虫的潜在生物防治剂。在这里，我们描述了三种寄主（D. suzukii，果蝇果蝇（Drosophila melanogaster Meigen）和果蝇果蝇（Drosophila immigrans Sturtevant））对果蝇T. drosophilae人口统计参数的影响。从D. immigrans和D. suzukii出来的成年雌性D. drosophilae比从D. melanogaster出来的成虫更大。。在D. immigrans和D. suzukii上发育的果蝇T. drosophilae的生育力比在D. melanogaster上发育的果蝇的生育力高18％。的净生殖率T.果蝇是在更高D.伊米和D. suzukii（R ₀  = 25.25和26.51）比黑腹果蝇（R ₀  = 22.53）。然而，生成时间长上D.伊米和D. suzukii比（T = 20.38和19.59天，分别地）黑腹果蝇（T = 17.20天），可能是由于其尺寸较大。 相比于在D. immigrans和D. suzukii上繁殖的果蝇（r _m  = 0.158和0.167），这有利于在D. melanogaster上繁殖的果蝇的自然内在增长率（r _m = 0.181 ）。的寄生率D. suzukii由T.果蝇是无论从哪个寄生蜂已经出现宿主物种的53％。这些结果的含义在铃木的生物控制范围内进行了讨论。