On the evolutionary and ontogenetic origins of tool-oriented behaviour in New Caledonian crows (Corvus moneduloides).

On the evolutionary and ontogenetic origins of tool-oriented behaviour in New Caledonian crows (Corvus moneduloides).
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DOI:
10.1111/j.1095-8312.2011.01613.x
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发表时间:
2011-04-01
期刊:
Biological journal of the Linnean Society. Linnean Society of London
影响因子:
--
通讯作者:
Kacelnik A
Kacelnik A
中科院分区:
其他
文献类型:
--
作者:
Kenward B;Schloegl C;Rutz C;Weir AA;Bugnyar T;Kacelnik A

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新喀里多尼亚乌鸦(Corvus moneduloides)在圈养和野生环境中是多产的工具使用者,并具有表达工具导向行为的遗传倾向。为了进一步了解工具使用的演变和发展,我们比较了新喀里多尼亚乌鸦和普通乌鸦(Corvus corax),这并不经常使用工具的对象操作的发展。我们发现惊人的质量相似的个体发育的工具为导向的行为在新喀里多尼亚乌鸦和乌鸦的食物缓存行为。鉴于新喀里多尼亚乌鸦和乌鸦的共同祖先几乎可以肯定是一个缓存物种,因此,我们建议,在新喀里多尼亚乌鸦工具使用的基本行动模式可能有其进化的起源缓存行为。非组合对象操作在两个物种中的频率相似。然而,频率的对象组合的功能行为的前兆增加在新喀里多尼亚乌鸦和乌鸦在整个研究期间,结束6周后羽翼未丰。这些定量观察是一致的假设,新喀里多尼亚乌鸦开发工具导向的行为,因为增加的动机,以执行对象的组合,促进必要的学习。
New Caledonian crows (Corvus moneduloides) are prolific tool users in captivity and in the wild, and have an inherited predisposition to express tool-oriented behaviours. To further understand the evolution and development of tool use, we compared the development of object manipulation in New Caledonian crows and common ravens (Corvus corax), which do not routinely use tools. We found striking qualitative similarities in the ontogeny of tool-oriented behaviour in New Caledonian crows and food-caching behaviour in ravens. Given that the common ancestor of New Caledonian crows and ravens was almost certainly a caching species, we therefore propose that the basic action patterns for tool use in New Caledonian crows may have their evolutionary origins in caching behaviour. Noncombinatorial object manipulations had similar frequencies in the two species. However, frequencies of object combinations that are precursors to functional behaviour increased in New Caledonian crows and decreased in ravens throughout the study period, ending 6 weeks post-fledging. These quantitative observations are consistent with the hypothesis that New Caledonian crows develop tool-oriented behaviour because of an increased motivation to perform object combinations that facilitate the necessary learning.
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