Problem-solving performance is correlated with reproductive success in a wild bird population
Problem-solving performance is correlated with reproductive success in a wild bird population
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DOI：
10.1016/j.anbehav.2012.10.005
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发表时间：
2013-01-01
期刊：
影响因子：
2.5
通讯作者：
Doligez, Blandine
中科院分区：
文献类型：
--
作者：
Cauchard, Laure;Boogert, Neeltje J.;Doligez, Blandine
虽然解决问题能力的个体间差异有很好的记录，但其与野外适应性差异的关系仍不清楚。我们研究了大山雀（Parus major）野生种群在解决问题任务上的表现与繁殖成功率之间的关系。我们提出了一个新的字符串拉任务，要求父母删除一个障碍，暂时阻止访问他们的巢箱与他们的腿在雏鸟供应期间的繁殖对。我们发现，巢，至少有一个父母解决了任务有较高的雏鸟生存，直到羽翼比巢父母都nonsolvers。窝卵数、孵化成功率和雏鸟数量与解决任务的速度呈正相关。我们的研究表明，自然选择可能直接作用于个体间的差异，在解决问题的表现。鉴于这些结果，机制维持在自然种群中的问题解决性能的个体间的变化需要进一步调查。版权所有（C）2012爱思唯尔有限公司代表动物行为研究协会出版。保留所有权利。
Although interindividual variation in problem-solving ability is well documented, its relation to variation in fitness in the wild remains unclear. We investigated the relationship between performance on a problem-solving task and measures of reproductive success in a wild population of great tits, Parus major. We presented breeding pairs during the nestling provisioning period with a novel string-pulling task requiring the parents to remove an obstacle with their leg that temporarily blocked access to their nestbox. We found that nests where at least one parent solved the task had higher nestling survival until fledging than nests where both parents were nonsolvers. Furthermore, clutch size, hatching success and fledgling number were positively correlated with speed in solving the task. Our study suggests that natural selection may directly act on interindividual variation in problem-solving performance. In light of these results, the mechanisms maintaining between-individual variation in problem-solving performance in natural populations need further investigation. Crown Copyright (C) 2012 Published on behalf of The Association for the Study of Animal Behaviour by Elsevier Ltd. All rights reserved.