Predator-mediated plasticity in morphology, life history, and behavior of Daphnia: The uncoupling of responses
Predator-mediated plasticity in morphology, life history, and behavior of Daphnia: The uncoupling of responses
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DOI：
10.1086/286164
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发表时间：
1998-08-01
影响因子：
2.9
通讯作者：
De Meester, L
中科院分区：
文献类型：
--
作者：
Boersma, M;Spaak, P;De Meester, L
我们研究了12个特征的方式响应鱼利它素在一组16个大型蚤克隆来自四个不同的栖息地，其中两个水蚤与鱼类共存，两个没有鱼。这些克隆在它们对捕食者利它素的反应上差异很大，没有一个克隆在所有性状上都表现出显着的反应，并且所有克隆都表现出对至少一个性状的反应。大多数克隆在一到四个性状上表现出显着的反应，没有证据表明不同性状之间存在关联。从鱼类栖息地的克隆鱼利它素的存在比从无鱼的位置克隆反应略强。我们的结论是，大多数克隆表现出诱导反应的存在，他们的捕食者（鱼），但有一个大的遗传变异性方面的特征，克隆表现出的反应。我们的研究结果表明，主要的区别不是诱导型和非诱导型基因型之间，而是基因型不同的特征组合，他们表现出诱导反应。
We studied the way 12 traits responded to fish kairomones in a set of 16 Daphnia magna clones derived from four different habitats-two where daphnids co-occur with fish and two without fish. These clones differed widely in their response to predator kairomones, with none of the clones showing a significant response in all traits and all clones showing a response for at least one trait. Most of the clones showed a significant response in one to four traits, with no evidence for an association between different traits. Clones from fish habitats were slightly more responsive to the presence of fish kairomones than clones from fishless locations. We conclude that most clones show an induced response to the presence of their predators (fish) but that there is a large genetic variability with respect to the traits for which clones show a response. Our results indicate that the major distinction is not between inducible and noninducible genotypes but rather that the genotypes differ in the combination of traits for which they show inducible responses.