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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Energetics, lifestyle, and reproduction in birds
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Energetics, lifestyle, and reproduction in birds

机译：鸟类的能量，生活方式和繁殖

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摘要

Theoretical and empirical studies of life history aim to account for resource allocation to the different components of fitness: survival, growth, and reproduction. The pioneering evolutionary ecologist David Lack [(1968) Ecological Adaptations for Breeding in Birds (Methuen and Co., London)] suggested that reproductive output in birds reflects adaptation to environmental factors such as availability of food and risk of predation, but subsequent studies have not always supported Lack's interpretation. Here using a dataset for 980 bird species (Dataset S1), a phytogeny, and an explicit measure of reproductive productivity, we test predictions for how mass-specific productivity varies with body size, phytogeny, and lifestyle traits. We find that productivity varies negatively with body size and energetic demands of parental care and positively with extrinsic mortality. Specifically: (i) altricial species are 50% less productive than precocial species; (ii) species with female-only care of offspring are about 20% less productive than species with other methods of parental care; (iii) nonmigrants are 14% less productive than migrants; (iV) frugivores and nectar-ivores are about 20% less productive than those eating other foods; and (v) pelagic foragers are 40% less productive than those feeding in other habitats. A strong signal of phylogehy suggests that syndromes of similar life-history traits tend to be conservative within clades but also to have evolved independently in different clades. Our results generally support both Lack's pioneering studies and subsequent research on avian life history.
机译：生命史的理论和实证研究旨在说明将资源分配给健身的不同组成部分：生存，成长和繁殖。进化生态学家戴维·拉克（David Lack）（[1968）鸟类繁殖的生态适应（伦敦，Methuen and Co.）]的开创性研究表明，鸟类的生殖输出反映了对环境因素的适应，例如食物的可获得性和被捕食的风险，但随后的研究并不总是支持拉克的解释。在这里，我们使用了980种鸟类的数据集（数据集S1），一个植物遗传资源和一个明确的生殖生产力度量标准，我们测试了预测质量个体生产力如何随体型，植物遗传资源和生活方式特征而变化的预测。我们发现，生产力随身体大小和父母护理的精力需求而变化，而与外部死亡率成正比。具体来说：（i）耕种物种的生产力比早熟物种低50％； （ii）仅由雌性照顾后代的物种的生产力要比采用其他父母照顾方式的物种低约20％； （iii）非移民的生产率比移民低14％； （iv）节食和花蜜-象牙的生产力比吃其他食物的生产力低约20％； （v）中上层觅食的生产力比在其他栖息地觅食的生产力低40％。强烈的生理信号表明，具有相似生活史特征的综合症在进化枝中趋于保守，但在不同进化枝中已独立发展。我们的研究结果总体上支持Lack的开创性研究以及随后的鸟类生活史研究。

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    Richard M. Sibly; Christopher C. Witt; Natalie A. Wright; Chris Venditti; Walter Jetz; James H. Brown;

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    School of Biological Sciences, University of Reading, Reading RG6 6AS, United Kingdom;

    Department of Biology, University of New Mexico, Albuquerque,NM 87131 Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131;

    Department of Biology, University of New Mexico, Albuquerque,NM 87131 Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131;

    Department of Biological Sciences, University of Hull,Kingston-upon-Hull HU6 7RX, United Kingdom;

    Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06520;

    Department of Biology, University of New Mexico, Albuquerque,NM 87131 Santa Fe Institute, Santa Fe, NM 87501;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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