Ladybird-induced life-history changes in aphids
Ladybird-induced life-history changes in aphids
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DOI：
10.1098/rspb.1999.0814
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发表时间：
1999-08-07
影响因子：
4.7
通讯作者：
Agarwala, BK
中科院分区：
文献类型：
--
作者：
Dixon, AFG;Agarwala, BK
在淡水生态系统中，捕食者介导的被捕食生物的形态、生活史和行为的可塑性已被广泛报道。尽管显然是适应的，但类似的反应直到最近才在陆地生物体中被报道。这是令人惊讶的，因为蚜虫是多种多样的，与它们的捕食者相比发展得非常快，并且经常产生非常大的蜂群，这对捕食者很有吸引力。因此，人们可能会认为，像蚜虫这样的陆地生物会随着捕食者的存在而在它们的发育过程中表现出一种兼性的变化，其他结果也证实了这一点。结果表明，豌豆蚜虫对瓢虫幼虫留下的足迹做出了反应，产生了更大比例的有翼后代，从而避免了即将到来的通过分散而增加的捕食风险。与此相关的是短期内活跃度的增加和生殖力的减少。黑豆和豌豆蚜虫对瓢虫有一定的保护作用，因为它们是蚂蚁看管的和/或难吃的，但它们对瓢虫幼虫的存在没有这种反应。
Predator-mediated plasticity in the morphology life history and behaviour of prey organisms has been widely reported in freshwater ecosystems. Although clearly adaptive, similar response have only recently been reported for terrestrial organisms. This is surprising as aphids are polyphenic and develop very rapidly compared with their predators and often produce very large colonies, which are attractive to predators. Therefore, one might expect terrestrial organisms like aphids to show a facultative change in their development in response to the presence of predators and other results have confirmed this. The results presented below indicate that the pea aphid responded to the tracks left by ladybird larvae by producing a greater proportion of winged offspring, which avoid the impending increased risk of predation by dispersing. Associated with this was a short-term increase in activity and reduction in fecundity. The black bean and vetch aphids, which are afforded some protection from ladybirds because they are ant attended and/or unpalatable, did not respond in this way to the presence of ladybird larvae.