Hiding behaviour in two cricket populations that differ in predation pressure
Hiding behaviour in two cricket populations that differ in predation pressure
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DOI：
10.1016/j.anbehav.2006.03.018
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发表时间：
2006-11-01
期刊：
影响因子：
2.5
通讯作者：
Kortet, Raine
中科院分区：
文献类型：
--
作者：
Hedrick, Ann V.;Kortet, Raine
尽管有证据表明，捕食者和寄生蝇影响蟋蟀的歌声结构的演变，但捕食者和寄生蝇对蟋蟀使用避难所的影响知之甚少。个别领域蟋蟀，蟋蟀整数，不同的时间，他们花了大量的时间躲在避难所时，放置到一个新的环境。在这里，我们研究了来自两个种群（美国亚利桑那州和加州）的蟋蟀的隐藏行为。不同的捕食压力。在这两个栖息地进行的拴系实验表明，更多的捕食者发生在亚利桑那州人口的栖息地比在加州人口的栖息地。我们还发现亚利桑那州的拟寄生蝇比加州的拟寄生蝇更多，它们被雄性的歌声所吸引。我们在实验室中测试了两个种群中雄性和雌性蟋蟀的隐藏时间。雄性亚利桑那州蟋蟀从高捕食栖息地隐藏更长的时间时，放置到一个新的环境中，在实验室比雄性加州蟋蟀从低捕食栖息地，虽然女性从两个人口没有什么不同。由于我们测试的蟋蟀是来自野外捕获的母亲的第一代实验室种群，因此行为差异是由于非遗传的母亲效应或遗传效应。这些结果表明，隐藏在这些人群中的雄性蟋蟀的时间已经形成的自然选择通过捕食压力。(c)2006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。
Despite evidence that predators and parasitoid flies influence the evolution of song structure in crickets, much less is known about the influence of predators and parasitoids on crickets' use of refuges. Individual field crickets, Gryllus integer, differ in the amount of time they spend hiding in refuges when placed into a novel environment. Here, we studied the hiding behaviour of crickets from two populations (Arizona and California, U.S.A.) that differ in predation pressure. Tethering experiments conducted at both habitats demonstrated that more predators occur in the Arizona population's habitat than in the California population's habitat. We also found more parasitoid flies, which are attracted to male song, in Arizona than in California. We tested hiding times of both male and female crickets from each of the two populations in the laboratory. Male Arizona crickets from the high-predation habitat hid longer when placed into a novel environment in the laboratory than male California crickets from a low-predation habitat, although females from the two populations did not differ. Since the crickets we tested were the first-generation laboratory population derived from field-caught mothers, differences in behaviour were due to either nongenetic maternal effects or genetic effects. These results suggest that hiding times of male crickets in these populations have been shaped by natural selection acting through predation pressure. (c) 2006 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.