菜蛾盘绒茧蜂Cotesia vestalis寄生对小菜蛾Plutella xylostella幼虫丝腺形态结构、丝腺内蛋白组分及含量有显著的影响。寄生后的小菜蛾幼虫的丝腺细胞不经历膨大期即开始凋亡,无法大量分泌蛋白,因此蛋白含量显著低于未寄生的小菜蛾丝腺内的蛋白,且蛋白组分也有一定程度的差异,主要是50 k Da以上的蛋白含量和种类的差别较大。 The parasitism of Cotesia vestalis had a significant effect on the morphology of silk gland and the content of protein in the silk gland of Plutella xylostella larvae. The parasitized Plutella xylostella larval cells began to apoptosis without exfoliation and could not secret a large amount of protein. Therefore, the protein content of parasitized Plutella xylostella larvae was significantly lower than that of non-parasitized Plutella xylostella, and the protein components were also different to some extent. The protein content and type, which is mainly above 50 kDa, is quite different.