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选择性习惯性塑造了海海对声学捕食者的识别
Volker B Deecke1, Peter J B Slater, John K B Ford
1School of Biology, University of St Andrews, Scotland, KY16 9TS, UK. vd2@st-andrews.ac.uk
Nature
|November 15, 2002
概括
港湾海学会区分捕食者的呼叫. 他们对不熟悉的杀手声音做出反应,但习惯于熟悉的声音,表现出学习的捕食者识别能力.
科学领域:
- 行为生态学 行为生态学
- 海洋哺乳动物的声学
- 捕食者-猎物的动态.
背景情况:
- 捕食者识别对于猎物的生存至关重要.
- 虽然存在一些先天的识别,但学习的歧视提供了具有可变线索的优势.
- 杀手 (Orcinus orca) 的声音因生态型和饮食而异.
研究的目的:
- 为了调查海 (Phoca vitulina) 是否可以在不同的杀手种群之间进行声学歧视.
- 为了确定海是否根据与特定杀手生态型的经验来修改他们的反应.
主要方法:
- 海暴露在哺乳动物和鱼类食杀的水下呼叫中.
- 测量了来自熟悉的当地食鱼种群和不熟悉的种群的电话响应.
- 记录和分析了对声学刺激的行为反应.
主要成果:
- 港湾海对吃哺乳动物的杀手的呼叫表现出强烈的反应.
- 海也对不熟悉的吃鱼的杀手叫声做出了强烈的反应.
- 没有观察到任何显著的响应来自熟悉的,当地吃鱼的杀手的呼叫.
结论:
- 港湾海表现出复杂的声学区分能力.
- 海学会习惯于听到非威胁的,熟悉的杀手种群的叫声.
- 这种选择性习惯使海能够将恐惧反应集中在已学到的局部威胁上.
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