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Food resource exploitation in ladybirds: consequences of prey species and size

机译:瓢虫的粮食资源开发:猎物种类和大小的后果

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In the present study, preference between larger and smaller instars of Acyrthosiphon pisum and Aphis craccivora by small and large female variants of ladybirds Menochilus sexmaculatus and Propylea dissecta has been investigated. Results reveal that both ladybird species consumed smaller prey, A. craccivora over larger prey, A. pisum when kept individually and/or in combination. Although small and large female variants of both ladybird species consumed smaller and larger instars of A. craccivora respectively, they preferred smaller instars of A. pisum. Similar results were also recorded within combinations. Thus, food resource exploitation in both ladybirds is due to both prey species and size.
机译:在本研究中,研究了瓢虫Menochilus sexmaculatus和Propylea dissecta的雌性变体的大和小,在豌豆蚜和蚜虫的大龄和小龄期之间的偏爱。结果表明,当单独和/或组合饲养时,两种瓢虫都消耗较小的猎物A. craccivora,而消耗较大的猎物A. pisum。尽管两种瓢虫物种的雌性变体的大小都不同,但它们分别消费了小而大的盲肠曲霉的幼虫,但他们更喜欢小食性的豌豆苗。组合中也记录了相似的结果。因此,两种瓢虫的食物资源开发都取决于猎物的种类和大小。

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