Habitat stability and predation pressure influence learning and memory in populations of three-spined sticklebacks
Habitat stability and predation pressure influence learning and memory in populations of three-spined sticklebacks
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DOI：
10.1016/j.anbehav.2007.08.005
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发表时间：
2008-03-01
期刊：
影响因子：
2.5
通讯作者：
Braithwaite, Victoria A.
中科院分区：
文献类型：
--
作者：
Brydges, Nichola M.;Heathcote, Robert J. P.;Braithwaite, Victoria A.
学习和记忆使动物能够在变化的环境中调整自己的行为。并不是所有的栖息地都有相同程度的变化，因此不同的环境可以以不同的方式影响学习和记忆。栖息地的稳定性是影响动物学习的众多环境变量之一，但它不太可能单独起作用。为了研究多个变量如何影响学习和记忆行为，我们比较了不同捕食压力下的四个池塘（稳定栖息地）和四条河流（不稳定栖息地）的三刺鱼的空间学习和记忆。与最初的预测相反，河鱼的记忆持续时间（> 1周）比池塘鱼（< 1周）长。学习率的栖息地稳定性和捕食压力之间的相互作用的影响，低捕食河流种群学习速度比高捕食河流种群。这些结果表明，学习和记忆可以通过对比生态因素以不同的方式受到影响，并且多种生态因素可以相互作用以形成学习和记忆，从而强调在调查行为时考虑多种生态变量的重要性。(c)2007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。
Learning and memory enable animals to adjust their behaviour in variable environments. Not all habitats vary to the same extent, and thus different environments can affect learning and memory in different ways. Habitat stability is one of numerous environmental variables proposed to influence what animals learn, but it is unlikely to act alone. To investigate how multiple variables affect learning and memory behaviour, we compared spatial learning and memory in three-spined sticklebacks from four ponds (stable habitat) and four rivers (unstable habitat) of varying predation pressure. Contrary to initial predictions, river fish had longer memory duration (> 1 week) than pond fish (< 1 week). Learning rate was affected by an interaction between habitat stability and predation pressure, with low-predation river populations learning faster than high-predation river populations. These results show that learning and memory can be affected in different ways by contrasting ecological factors and that multiple ecological factors can interact to shape learning and memory, thus emphasizing the importance of considering multiple ecological variables when investigating behaviour. (c) 2007 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.