Effects of age and reproductive status on individual foraging site fidelity in a long-lived marine predator
Effects of age and reproductive status on individual foraging site fidelity in a long-lived marine predator
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年龄和繁殖状况对长寿海洋捕食者个体觅食地点保真度的影响
DOI：
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
S. Patrick
中科院分区：
文献类型：
--
作者：
S. Votier;Annette L. Fayet;S. Bearhop;T. Bodey;B. Clark;James Grecian;T. Guilford;K. Hamer;Jana W. E. Jeglinski;G. Morgan;Ewan D. Wakefield;S. Patrick
个体觅食的专业化，其中个人使用一个小组成部分的人口生态位宽度，在自然界中广泛存在，具有重要的生态和进化意义。在长寿动物中，觅食能力随着年龄的增长而发展，但我们对觅食个体的个体发育知之甚少。在这里，我们使用精确的全球定位系统（GPS）记录器来研究如何个人觅食网站保真度（IFSF），觅食专业化的一个共同组成部分，育种者之间的变化，失败的育种者和不成熟的一个长寿的海洋捕食者-北方塘鹅桑。繁殖者（5岁以上）表现出很强的IFSF：他们有相似的路线，并忠实于连续旅行的远端点。然而，中央放置的未成年人（年龄2-3）更具有探索性，缺乏路线或觅食地点的保真度。失败的育种者处于中间状态：一些具有很强的忠诚度，另一些更具探索性。个体觅食的专业化以前被认为是作为一个功能的遗传表型差异或通过社会传播。相反，我们的研究结果提出了第三种选择在长寿物种中，觅食地点是在生命早期的探索行为中习得的，随着年龄和经验的增长，这些觅食地点变得更加成熟，并在可能的情况下得到完善探索-完善觅食假说。我们推测类似的模式可能存在于其他长寿的物种，而且，长期的不成熟可能是这种基于记忆的个人觅食策略的后果。
Individual foraging specializations, where individuals use a small component of the population niche width, are widespread in nature with important ecological and evolutionary implications. In long-lived animals, foraging ability develops with age, but we know little about the ontogeny of individuality in foraging. Here we use precision global positioning system (GPS) loggers to examine how individual foraging site fidelity (IFSF), a common component of foraging specialization, varies between breeders, failed breeders and immatures in a long-lived marine predator—the northern gannet Morus bassanus. Breeders (aged 5+) showed strong IFSF: they had similar routes and were faithful to distal points during successive trips. However, centrally placed immatures (aged 2–3) were far more exploratory and lacked route or foraging site fidelity. Failed breeders were intermediate: some with strong fidelity, others being more exploratory. Individual foraging specializations were previously thought to arise as a function of heritable phenotypic differences or via social transmission. Our results instead suggest a third alternative—in long-lived species foraging sites are learned during exploratory behaviours early in life, which become canalized with age and experience, and refined where possible—the exploration-refinement foraging hypothesis. We speculate similar patterns may be present in other long-lived species and moreover that long periods of immaturity may be a consequence of such memory-based individual foraging strategies.
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中心位置海洋捕食者搜索行为和空间觅食一致性的个体差异
影响因子：
3.4
作者：
Patrick S
通讯作者：
Patrick S
个体海鸟表现出一致的觅食策略以应对可预测的渔业丢弃物
影响因子：
1.7
作者：
Patrick S
通讯作者：
Patrick S
未成熟海鸟的群体间运动、海上行为和觅食：GPS-PPT 跟踪、无线电跟踪和稳定同位素分析的结果
影响因子：
2.4
作者：
Votier S
通讯作者：
Votier S
影响因子：
5.7
作者：
Votier, Stephen C.;Bearhop, Stuart;Newton, Jason
通讯作者：
Newton, Jason