在夏威夷乌中发现全物种工具使用
Christian Rutz1, Barbara C Klump1, Lisa Komarczyk2
1Centre for Biological Diversity, School of Biology, University of St Andrews, Sir Harold Mitchell Building, St Andrews KY16 9TH, UK.
Nature
|September 16, 2016
概括
夏威夷的乌 (
科学领域:
- 行为学
- 进化生物学
- 鸟类学
背景情况:
- 野生鸟类使用工具是罕见的,新喀里多尼亚乌是复杂的工具制造的主要例子.
- 由于缺乏用于比较的工具使用同源物,因此对鱼的工具使用的进化起源尚不清楚.
- 了解工具使用的演变需要在相似的生态环境中对相关和非相关物种进行比较研究.
研究的目的:
- 研究夏威夷乌 (Alalā,Corvus hawaiiensis) 的工具使用能力.
- 探索岛屿鱼的工具使用的进化起源和潜在的融合进化.
- 建立对鱼工具使用及其生态驱动因素的比较研究的基础.
主要方法:
- 监禁中的青少年工具使用发展的观察,评估学习和社会投入.
- 工具使用技能的评估作为在囚禁"Alalā群体内的全物种特征.
- 环境因素和新喀里多尼亚乌之间的基因关系的比较分析.
主要成果:
- 青少年在没有培训或社会学习的情况下表现出功能工具使用,
- 熟练使用工具是Alalā的全物种特征,表明这是自然的行为.
- 阿拉拉和新喀里多尼亚乌,尽管有很远的关系,在类似的岛屿环境中演变使用工具.
结论:
- 夏威夷的乌是巧妙的工具使用者,
- 岛上的生态条件,如竞争和掠食的减少,可能会促进鸟类食工具的发展.
- 这一发现使得比较研究对于了解鱼类和潜在的其他类型如灵长类动物的工具使用进化至关重要.
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