夜间而非白天的威胁形成了迁徙鸣禽的中途停留策略。

IF 3.7 1区 环境科学与生态学 Q1 ECOLOGY
Giuseppe Bianco, Sara Raj Pant, Xiaojia Wu, Susanne Åkesson
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引用次数: 0

摘要

鸣禽的迁徙包括频繁的迁徙飞行,中途停留几天以补充燃料。对于第一年候鸟来说,这需要在不熟悉的地方停下来,利用当地的资源,最大限度地增加燃料。然而,由于捕食者的存在,中途停留也会带来死亡风险。我们的目的是确定来自不同捕食策略的鸟类捕食者的听觉线索是否会引起欧洲知更鸟(Erithacus rubecula)在秋季中途停留期间不同的反捕食者反应。我们将一年级的欧洲知更鸟暴露在昼间捕食者欧亚雀鹰(Accipiter nisus)和夜间捕食者茶色猫头鹰(Strix aluco)的叫声中,前者捕食飞行中的猎物,后者依靠猛扑攻击。我们监测了每日食物摄入量、身体状况、活动水平和夜间活动时间的变化。知更鸟会对夜间捕食者的危险做出反应,但不会根据白天捕食者的提示改变它们的策略。具体来说,接触茶色猫头鹰的叫声会导致夜间活动减少,食物摄入减少,燃料积累减慢,导致实验结束时身体状况变差。中途停留后的下半身状况会导致迁徙速度变慢,从而延迟到达越冬地区,这可能会影响个体的健康。这项新研究强调了鸟类迁徙计划在适应基于捕食者活动时间和狩猎方式的感知捕食风险方面的灵活性,以及这些适应如何不同地形成中途停留策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Nocturnal but not diurnal threats shape stopover strategy in a migrating songbird

Nocturnal but not diurnal threats shape stopover strategy in a migrating songbird

Nocturnal but not diurnal threats shape stopover strategy in a migrating songbird

Nocturnal but not diurnal threats shape stopover strategy in a migrating songbird

Nocturnal but not diurnal threats shape stopover strategy in a migrating songbird

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来源期刊
Journal of Animal Ecology
Journal of Animal Ecology 环境科学-动物学
CiteScore
9.10
自引率
4.20%
发文量
188
审稿时长
3 months
期刊介绍: Journal of Animal Ecology publishes the best original research on all aspects of animal ecology, ranging from the molecular to the ecosystem level. These may be field, laboratory and theoretical studies utilising terrestrial, freshwater or marine systems.
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