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首页> 外文期刊>Marine biology >Preservation methods alter stable isotope values in gelatinous zooplankton: implications for interpreting trophic ecology
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Preservation methods alter stable isotope values in gelatinous zooplankton: implications for interpreting trophic ecology

机译：保存方法改变胶状浮游动物的稳定同位素值：对解释营养生态学的意义

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摘要

Jellyfish are increasingly topical within studies of marine food webs. Stable isotope analysis represents a valuable technique to unravel the complex trophic role of these long-overlooked species. In other taxa, sample preservation has been shown to alter the isotopic values of species under consideration, potentially leading to misinterpretation of trophic ecology. To identify potential preservation effects in jellyfish, we collected Aurelia aurita from Strang-ford Lough (54°22'44.73"N, 5°32'53.44"W) during May 2009 and processed them using three different methods prior to isotopic analysis (unpreserved, frozen and preserved in ethanol). A distinct preservation effect was found on δ~(15)N values: furthermore, preservation also influenced the positive allometric relationship between individual size and δ~(15)N values. Conversely, δ~(13)C values remained consistent between the three preservation methods, conflicting with previous findings for other invertebrate, fish and mammalian species. These findings have implications for incorporation of jellyfish into marine food webs and remote sampling regimes where preservation of samples is unavoidable.
机译：在海洋食物网的研究中，水母越来越成为话题。稳定的同位素分析是揭示这些长期被忽视物种的复杂营养作用的宝贵技术。在其他分类单元中，样品保存已显示出改变了所考虑物种的同位素值，可能导致对营养生态学的误解。为了确定在水母中的潜在保存效果，我们于2009年5月从Strang-ford Lough（54°22'44.73“ N，5°32'53.44” W）收集了Aurelia aurita，并在同位素分析之前使用了三种不同的方法对其进行了处理（未保存） ，冷冻并保存在乙醇中）。发现对δ〜（15）N值具有明显的保存效果：此外，保存还影响个体大小与δ〜（15）N值之间的正异构关系。相反，三种保存方法之间的δ〜（13）C值保持一致，这与其他无脊椎动物，鱼类和哺乳动物物种的先前发现相矛盾。这些发现对将水母纳入海洋食物网和不可避免地保留样品的远程采样制度具有重要意义。

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  • 来源
    《Marine biology》 |2011年第9期|p.2141-2146|共6页
  • 作者

    Nicholas E. C. Fleming; Jonathan D. R. Houghton; Caroline L. Magill; Chris Harrod;

  • 作者单位

    School of Biological Sciences, Medical Biology Centre, Queen's University, Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK,Queen's University Marine Laboratory,12-13 The Strand, Portaferry, Co. Down BT22 1PF, UK;

    School of Biological Sciences, Medical Biology Centre, Queen's University, Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK,Queen's University Marine Laboratory,12-13 The Strand, Portaferry, Co. Down BT22 1PF, UK;

    School of Biological Sciences, Medical Biology Centre, Queen's University, Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK;

    School of Biological Sciences, Medical Biology Centre, Queen's University, Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK;

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