A study of interactions among natural enemies is important to develop a better biological control program. Among these interactions, one that is crucial is the consumption of parasitized prey by a predator. Feeding on aphid mummies could affect the predator as well as the parasitoid species. In this study, the effect of parasitized prey on prey consumption, survival, growth, and development of 4th instar larvae of the predatory species, Coccinella septempunctata L. (Coleoptera: Coccinellidae), as an active predator of aphids, was studied. Moreover, the effect of parasitized and mummified aphids on female fecundity was also evaluated. The green peach aphid, Myzus persicae Sulzer (Hemiptera: Aphididae) was used. Obtained results showed that the parasitized aphids, as a predatory food, significantly affected the predator. The prey consumption was highest on parasitized (24.10 ± 0.53) and lowest on mummified (9.75 ± 0.40) aphids. The survival rate was in the order of non-parasitized > parasitized > mummified. The mass gained by the 4th instar larvae of C. septempunctata was in the order of parasitized (26.25 mg ± 0.89) > non-parasitized (19.25 mg ± 0.86) > mummified aphids (10.20 mg ± 0.52), when fed on different prey. Developmental time of the predator was recorded highest, when it consumed mummified aphids (13.6 ± 0.39). As well, female fecundity was affected positively. The female was observed to lay the most eggs (323.55 ± 1.57) to have the highest number of hatched eggs (38.70 ± 0.92), and to have the highest egg mass (196.10 μg ± 1.22), when it consumed the parasitized aphids in contrast to non-parasitized and mummified aphids. It was also found that the type of prey did not affect the incubation period of the eggs.

中文翻译：

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在实验室条件下，寄生的猎物对七星瓢虫（Cocinella septempunctata L.（Coleoptera：Coccinellidae））的猎物消耗，存活，生长和发育的影响

研究天敌之间的相互作用对于开发更好的生物控制程序很重要。在这些相互作用中，至关重要的是掠食者对被寄生的猎物的消费。以蚜虫木乃伊为食可能会影响捕食者以及寄生类动物。在这项研究中，研究了被寄生的猎物对捕食性第四小龄幼虫Coccinella septempunctata L.（Coleoptera：Coccinellidae）作为蚜虫的活跃捕食者的影响。此外，还评估了寄生和木乃伊化的蚜虫对雌性繁殖力的影响。使用了绿色桃蚜，Myzus persicae Sulzer（半翅目：蚜科）。获得的结果表明，被寄生的蚜虫作为捕食性食物，对捕食者有显着影响。寄生化后的蚜虫的猎物消耗最高（24.10±0.53），而木乃伊（9.75±0.40）则最低。存活率依次为未寄生化>寄生化>木乃伊。当饲喂不同的猎物时，由C. septempunctata的四龄幼虫获得的质量依次为寄生（26.25 mg±0.89）>非寄生虫（19.25 mg±0.86）>木乃伊（10.20 mg±0.52）当捕食了木乃伊蚜虫时，捕食者的发育时间最高（13.6±0.39）。同样，女性生殖力也受到积极影响。相比之下，雌性食用被寄生的蚜虫后，其产卵量最多（323.55±1.57），孵出的卵数最多（38.70±0.92），卵重最高（196.10μg±1.22）。到未寄生和木乃伊的蚜虫。