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首页> 外文期刊>Marine ecology progress series >Seabird year-round and historical feeding ecology: blood and feather δ~(13)C and δ~(15)N values document foraging plasticity of small sympatric petrels
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Seabird year-round and historical feeding ecology: blood and feather δ~(13)C and δ~(15)N values document foraging plasticity of small sympatric petrels

机译：海鸟全年和历史饲养生态学：血液和羽毛的δ〜（13）C和δ〜（15）N值记录了小同胞海燕觅食的可塑性

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摘要

The foraging ecology of small seabirds remains poorly understood because of the difficulty of studying them at sea. Here, the extent to which 3 sympatric seabirds (blue petrel, thin-billed prion and common diving petrel) alter their foraging ecology across the annual cycle was investigated using stable isotopes. δ~(13)C and δ~(15)N values were used as proxies of the birds' foraging habitat and diet, respectively, and were measured in 3 tissues (plasma, blood cells and feathers) that record trophic information at different time scales. Long-term temporal changes were investigated by measuring feather isotopic values from museum specimens. The study was conducted at the subantarctic Kerguelen Islands and emphasizes 4 main features. (1) The 3 species highlight a strong connection between subantarctic and Antarctic pelagic ecosystems, because they all foraged in Antarctic waters at some stages of the annual cycle. (2) Foraging niches are stage-dependent, with petrels shifting their feeding grounds during reproduction either from oceanic to productive coastal waters (common diving petrel) or from subantarctic to high-Antarctic waters where they fed primarily on crustaceans (blue petrel and thin-billed prion). (3) The common diving petrel segregated from the surface-feeders blue petrel and thin-billed prion by a coastal habitat and lower trophic level prey, while the blue petrel segregated from the thin-billed prion by foraging further south and including more fish in its diet. (4) Feather δ~(13)C and δ~(15)N values from historical and recent specimens of thin-billed prion depicted a pronounced temporal shift to higher latitudes in its main moulting ground, where it feeds on higher trophic level prey. The study contributes to growing evidence that seabirds exhibit considerable foraging plasticity and sheds new light on their flexibility at different time scales (from intra-seasonal to decadal).
机译：由于很难在海上研究小海鸟的觅食生态，因此人们对其知之甚少。在这里，使用稳定的同位素研究了3种同伴海鸟（蓝海燕，细嘴病毒和普通潜水海燕）在一年中改变其觅食生态的程度。 δ〜（13）C和δ〜（15）N值分别用作鸟类觅食栖息地和饮食的代理，并在记录不同时间营养信息的3个组织（血浆，血细胞和羽毛）中进行测量秤。通过测量博物馆标本的羽毛同位素值研究了长期的时间变化。该研究在亚南极的克格伦群岛进行，并强调了4个主要特征。 （1）这3个物种突出了南极和南极上层生态系统之间的紧密联系，因为它们都在年度周期的某些阶段在南极水域觅食。 （2）觅食生态位是依阶段而定的，海燕在繁殖过程中将其觅食地从海洋转向生产性沿海水域（普通潜水海燕），或者从南极至南极水域（主要以甲壳类动物为食）繁殖。计费病毒）。 （3）常见的潜水海燕通过沿海栖息地和营养级较低的猎物与表面食饵蓝海燕和薄嘴病毒隔离，而蓝海燕则通过向南觅食并在其中捕捞更多鱼类而与薄嘴thin病毒隔离。它的饮食。 （4）从历史和最近的薄嘴病毒样本获得的羽毛δ〜（13）C和δ〜（15）N值表明其主要蜕皮区明显向高纬度地区过渡，并以较高的营养级猎物为食。 。这项研究为越来越多的证据提供了证据，表明海鸟具有可观的觅食可塑性，并在不同的时间尺度（从季节内到年代际）上揭示了它们的灵活性。

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  • 来源
    《Marine ecology progress series》 |2014年第28期|267-280|共14页
  • 作者

    Yves Cherel; Maeelle Connan; Audrey Jaeger; Pierre Richard;

  • 作者单位

    Centre d'Etudes Biologiques de Chize, UMR 7372 du CNRS et de l'Universite de La Rochelle, BP 14, 79360 Villiers-en-Bois, France;

    Centre d'Etudes Biologiques de Chize, UMR 7372 du CNRS et de l'Universite de La Rochelle, BP 14, 79360 Villiers-en-Bois, France;

    Centre d'Etudes Biologiques de Chize, UMR 7372 du CNRS et de l'Universite de La Rochelle, BP 14, 79360 Villiers-en-Bois, France;

    Laboratoire Littoral, Environnement et Societes, UMR 7266 du CNRS et de l'Universite de La Rochelle, 2 rue Olympe de Gouges, 17000 La Rochelle, France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Diet; Museum specimens; Procellariiformes; Resource partitioning; Southern Ocean; Stable isotopes;

    机译：饮食;博物馆标本;cell形目;资源分区;南部海洋;稳定同位素;

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