In situ examination of boldness-shyness traits in the tropical poeciliid, Brachyraphis episcopi
In situ examination of boldness-shyness traits in the tropical poeciliid, Brachyraphis episcopi
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DOI：
10.1016/j.anbehav.2004.12.022
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发表时间：
2005-11-01
期刊：
影响因子：
2.5
通讯作者：
Braithwaite, V
中科院分区：
文献类型：
--
作者：
Brown, C;Jones, F;Braithwaite, V
从人格差异的角度解释个体行为的一致变化是理解人类行为的基石之一，但由于害怕援引拟人论，在行为生态学中很少讨论。然而，最近，人们的兴趣开始集中在识别动物的个性特征并研究它们可能的进化后果上。用来定义个性特征的一个主要轴是害羞-大胆连续体。我们在原位实验中检测了来自8个短掌鱼（也称为短掌鱼）种群的鱼的胆度。在分别流入巴拿马运河的四条河流中，来自高捕食区和低捕食区的鱼被测试。大胆度得分受到河流中标准长度和捕食压力的相对水平的强烈影响。在所有四条河流中，来自高捕食区的鱼比来自低捕食区的鱼更大胆。随着年龄的增长，鱼变得越来越害羞。(c) 2005年爱思唯尔有限公司出版的《动物行为研究协会》版权所有。
Explaining consistent variation in the behaviour of individuals in terms of personality differences is one of the cornerstones of understanding human behaviour but is seldom discussed in behavioural ecology for fear of invoking anthropomorphism. Recently, however, interest has begun to focus on identifying personality traits in animals and examining their possible evolutionary consequences. One major axis used to define personality traits is the shyness-boldness continuum. We examined boldness in an in situ experiment using fish from eight populations of the poeciliid Brachyraphis episcopi (also referred to as Brachyrhaphis episcopi). Fish from high- and low-predation regions within four streams that run independently into the Panama Canal were tested. Boldness scores were strongly influenced by standard length and the relative level of predation pressure in the rivers. In all four rivers, fish from high-predation areas were bolder than those from low-predation areas. Fish became increasingly shy as they grew. (c) 2005 The Association for the Study of Animal Behaviour Published by Elsevier Ltd. All rights reserved.