Female-biased predation risk and its differential effect on the male and female courtship behaviour of jumping spiders
Female-biased predation risk and its differential effect on the male and female courtship behaviour of jumping spiders
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DOI：
10.1016/j.anbehav.2005.04.024
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发表时间：
2006-03-01
期刊：
影响因子：
2.5
通讯作者：
Li, DQ
中科院分区：
文献类型：
--
作者：
Su, KFY;Li, DQ
越来越多的证据表明，交配的雌性可能比雄性更容易被捕食。这表明，面对高捕食风险的雌性更不容易接受雄性求爱，这反过来又会导致雄性改变它们的求偶行为。为了验证这一假设，我们首先确定了捕食者是否有选择地攻击雌性。我们用来自澳大利亚昆士兰的跳蛛Jacksonoids queenslandicus作为猎物，用另一种跳蛛Portia fimbriata作为捕食者。然后，我们研究了雄性和雌性暴露于来自海鞘松毛虫的捕食风险对雄性昆士兰对虾的求偶和交配行为的不同影响。我们发现，当被要求在一只雄性和一只雌性昆士兰斑潜蝇之间进行选择时，海绵P.fimbriata更喜欢雌性。当试验前只有雌性暴露在捕食风险中时，雄性昆士兰斑潜蝇向雌性展示的时间比对照组(雄性和雌性都没有暴露在捕食者面前)要短。然而，当只有雄性暴露在捕食者面前时，它们与对照组相比，无论是求偶频率还是求偶持续时间都没有显著差异。这项研究提供的证据表明，在改变雄性的交配行为方面，雌性对捕食风险的感知至少与雄性一样重要。(C)2006年，动物行为研究协会。爱思唯尔有限公司出版。保留所有权利。
There is growing evidence that females that are engaged in mating may be more vulnerable to predation than males. This suggests that females facing a high risk of predation are less receptive to male courtship, which in turn leads males to alter their courtship behaviour. To test this hypothesis, we first determined whether predators selectively attacked females. We used a jumping spider, Jacksonoides queenslandicus, from Queensland in Australia as prey and Portia fimbriata, another species of jumping spider, as predator. We then investigated the differential effects of male and female exposure to predation risk from P. fimbriata on the courtship and mating behaviour of males within J. queenslandicus pairs. We found that when given a choice between a male and a female J. queenslandicus, P. fimbriata preferred the female. When only females were exposed to predation risk before the trials, J. queenslandicus males displayed to females for less time than the controls (in which neither the male nor the female was exposed to predators). However, when only males were exposed to the predators, they showed no significant difference in either frequency or duration of courtship display compared to the controls. This study provides evidence that the female's perception of predation risk can be at least as important as that of the male in changing male mating behaviour in J. queenslandicus. (c) 2006 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.