The combined behavioural tendencies of predator and prey mediate the outcome of their interaction
The combined behavioural tendencies of predator and prey mediate the outcome of their interaction
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DOI：
10.1016/j.anbehav.2013.05.020
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发表时间：
2013-08-01
期刊：
影响因子：
2.5
通讯作者：
Hedrick, Ann V.
中科院分区：
文献类型：
--
作者：
DiRienzo, Nicholas;Pruitt, Jonathan N.;Hedrick, Ann V.
在大多数动物种群中，行为的个体差异是一致的。从历史上看，行为类型（例如大胆和害羞）的健身后果已经在一个焦点物种的时间进行了调查。研究通常忽略与这些类型相互作用的异种变异。然而，在行为类型的多个相互作用的种内变异可以产生依赖性的影响，行为类型x行为类型的物种相互作用，并可能作为一种机制，保持野生种群的表型变异。在这里，我们研究了如何行为类型的捕食者和猎物共同确定的结果predatoreprey互动使用的黑寡妇蜘蛛，Latrodectus hesperus，和一个同位场蟋蟀，蟋蟀整数。我们测定了个体的抗捕食（大胆）行为。整体性和个体觅食选址的大胆性。根据蜘蛛在安全和高风险觅食环境中定居的倾向来估计。预测猎物生存和捕食者觅食成功的最佳拟合模型表明，捕食者和猎物的行为倾向，以及它们之间的相互作用，共同影响的结果阶段predatoreprey相互作用。这些模型的R-2值是考虑捕食者或猎物单独行为类型变化的模型的3 - 10倍。我们的研究结果强调了在测试行为类型对物种相互作用和个体表现的影响时，考虑多个相互作用者的行为类型的重要性。更一般地说，我们的研究结果强烈表明，如果我们要了解物种相互作用的结果，应该注意多个相互作用。(C)2013年，动物行为研究协会。由爱思唯尔有限公司出版。保留所有权利。
Consistent individual differences in behaviour are present in most animal populations. Historically, the fitness consequences of behavioural types (e.g. bold and shy) have been investigated in one focal species at a time. Studies generally disregard variation in heterospecifics that interact with those types. However, intraspecific variation in behavioural types of multiple interactors could generate dependent effects of behavioural type x behavioural type in species interactions and might serve as a mechanism maintaining phenotypic variation in wild populations. Here we examined how behavioural types of both predators and prey jointly determine the outcome of a predatoreprey interaction using the black widow spider, Latrodectus hesperus, and a syntopic field cricket, Gryllus integer. We assayed the antipredator (boldness) behaviour of individual G. integer and the boldness during foraging site selection of individual L. hesperus, as estimated by the spiders' tendency to settle in safe versus high-risk foraging environments. The best-fit models predicting prey survivorship and predator foraging success indicate that the behavioural tendencies of both predator and prey, as well as the interaction between them, jointly affect the outcome of staged predatoreprey interactions. These models boasted R-2 values 3-10 times those of models that considered behavioural type variation in either predator or prey alone. Our findings highlight the importance of considering the behavioural types of multiple interactors when testing the effects of behavioural types on species interactions and individual performance. More generally, our results strongly suggest that attention should be paid to multiple interactors if we are to understand the outcomes of species interactions. (C) 2013 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.