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拟孔蜂巨柄啮小蜂对家蝇的寄生作用
The parasitic effect of Melittobia acasta on Musca domestica
吕传钰;刘 强
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DOI:
作者单位:天津师范大学化学与生命科学学院生物系 天津 300074
中文关键词:拟孔蜂巨柄啮小蜂,家蝇 ,寄生率
英文关键词:Melittobia acasta,Musca domestica,parasitism rate
中文摘要:

拟孔蜂巨柄啮小蜂Melittobia acasta Walker是一种可以寄生家蝇Musca domestica L.的寄生蜂。首次报道食物对该蜂寿命的影响,以及该蜂日龄、家蝇蛹龄、寄生蜂密度和蝇蛹密度与寄生率的关系。以15%糖水饲养该小蜂寿命最长;单只啮小蜂最多可以寄生8只蝇蛹,最大出蜂总量达58只;单个蝇蛹最多出蜂22只;随着寄生蜂的日龄和蝇蛹日龄增加,该蜂对蝇蛹的寄生个数有下降的趋势,寄生率和寄生蜂日龄符合y=3.36-0.062x-0.045x2,寄生率和蝇蛹日龄符合y=2.50+0.91x-0.34x2;蝇蛹的密度对小蜂的寄生率的影响拟合Holling功能反应模型:Na=0.6165TrN0(1+0.6165×0.499 N0);寄生蜂自身密度对寄生率的影响符合方程:

a=0.4943P-0.306。

英文摘要:

Melittobia acasta Walker is a parasitoid of Musca domestica. The effect of food on longevity of M. acasta, and the effect of the age of the parasitoid and pupae, the densities of the parasitoid and fly's pupae on parasitism rate were studied. The results showed that M. acasta fed with 15% glucose solution had the longest longevity. An individual of M. acasta could lay eggs in up to eight fly pupae of M. domestica, and could reproduce 58 progenies. Up to 22 progenies would be reproduced in one pupa. The parasitic rate decreased with the increment of the age of M. acasta and M. domestica pupae. The relationship between the parasitic rate (Y) and the age of the parasitoid(X) was y=3.36-0.062x-0.045x2, and the relationship between the parasitic rate (Y) and the age of the pupa(X) was y=2.50+0.91x-0.34x2 The relationship between the density of M. domestica and the parasitic rate could be described by Holling Model Na=0.6165TrN0(1+0.6165×0.499 N0), and the relationship between the density of M. acasta and the parasitic rate was a=0.4943p-0.306.

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