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首页> 外文期刊>Polar biology >Extra-pair paternity in relation to regional and local climate in an Arctic-breeding passerine
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Extra-pair paternity in relation to regional and local climate in an Arctic-breeding passerine

机译：与北极繁殖雀形目有关的区域和当地气候的成对陪产

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摘要

Reproductive processes are affected by local and regional climate variation. Birds breeding in the Arctic may experience strong energetic constraints, which will affect their reproductive output. Recent research has emphasized the importance of extra-pair copulation as a means of improving reproductive output. In this paper, we explore ecological and climatic determinants that may explain variation in extra-pair paternity (EPP) in an arctic-breeding passerine, the snow bunting Plectrophenax niva-lis. EPP occurred in 10.8 % of the young and 20.9 % of the broods sampled from 1999 to 2003. We found that the proportion of extra-pair young in a nest was positively related to the body size and age of the social male and weakly negatively related to the local average minimum temperature prior to the onset of egg laying. These results suggest that older and larger males lost a larger share of paternity than smaller and younger males, and that the relative loss of paternity decreased with cold weather during the female's fertile period. Large and old males spend less time mate guarding compared to small and young males and may allocate more time towards extra-pair forays, and thus lose more paternity in their own nest. Climatic conditions most likely constrain the total energy budget with less energy available for extra-pair activity in cold weather.
机译：生殖过程受当地和区域气候变化的影响。在北极繁殖的鸟类可能会遇到强大的能量限制，这将影响其繁殖能力。最近的研究强调了成对交配作为提高生殖产量的一种手段的重要性。在本文中，我们探索了生态和气候决定因素，这些因素可以解释北极繁殖雀形目鸟雪bunPlectrophenax niva-lis的超配对亲子关系（EPP）的变化。 EPP发生在1999年至2003年间，占幼鸽总数的10.8％和20.9％。我们发现，成对的成年幼鸟在巢中的比例与成年雄性的体型和年龄呈正相关，而与幼年呈负相关到产蛋开始之前的最低平均温度。这些结果表明，年龄较大和较大的男性比较小的和较小的男性失去更多的亲子关系，并且在女性的受精期，相对父子关系的丧失随着寒冷的天气而减少。与雄性和雄性相比，雄性和雄性花费的时间更少，雄性可能花费更多的时间进行额外的配对，因此在自己的巢穴中失去更多的亲子关系。气候条件很可能会限制总能量收支，而在寒冷的天气中进行额外配对活动所需的能量会减少。

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  • 来源
    《Polar biology》 |2014年第1期|89-97|共9页
  • 作者

    Katrine S. Hoset; Yngve Espmark; Frode Fossoy; Bard G. Stokke; Henrik Jensen; Morten I. Wedege; Arne Moksnes;

  • 作者单位

    Section of Ecology, Department of Biology, University of Turku, 20014 Turku, Finland;

    Department of Biology, Norwegian University of Science and Technology, NTNU, Realfagbygget, 7491 Trondheim, Norway;

    Department of Biology, Norwegian University of Science and Technology, NTNU, Realfagbygget, 7491 Trondheim, Norway;

    Department of Biology, Norwegian University of Science and Technology, NTNU, Realfagbygget, 7491 Trondheim, Norway;

    Department of Biology, Centre for Biodiversity Dynamics, Norwegian University of Science and Technology, NTNU, Realfagbygget, 7491 Trondheim, Norway;

    Norwegian Environmental Agency, 7485 Trondheim, Norway;

    Department of Biology, Norwegian University of Science and Technology, NTNU, Realfagbygget, 7491 Trondheim, Norway;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Extra-pair paternity; Ecological effects; Climatic effects; Male age; Male size; Plectrophenax nivalis;

    机译：超双亲;生态影响;气候影响;男性年龄;男性尺寸;积雪忍冬;

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