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首页> 外文期刊>Ecological research >Thermally mediated body temperature, water content and aggregation behaviour in the intertidal gastropod Nerita atramentosa
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Thermally mediated body temperature, water content and aggregation behaviour in the intertidal gastropod Nerita atramentosa

机译：潮间腹足纲Nerita atramentosa的热介体温度，水分含量和聚集行为

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摘要

Intertidal organisms are vulnerable to global warming as they already live at, or near to, the upper limit of their thermal tolerance window. The behaviour of ectotherms could, however, dampen their limited physiological abilities to respond to climate change (e.g. drier and warmer environmental conditions) which could substantially increase their survival rates. The behaviour of ectotherms is still mostly overlooked in climate change studies. Here, we investigate the potential of aggregation behaviour to compensate for climate change in an intertidal gastropod species {Nerita atramentosa) in South Australia. We used thermal imaging to investigate (1) the heterogeneity in individual snail water content and body temperature and surrounding substratum temperature on two topographically different habitats (i.e. rock platform and boulders) separated by 250 m at both day- and night-times, (2) the potential relationship between environment temperature (air and substratum) and snail water content and body temperature, and (3) the potential buffering effect of aggregation behaviour on snail water content and body temperature. Both substratum and snail temperature were more heterogeneous at small spatial scales (a few centimetres to a few metres) than between habitats. This reinforces the evidence that mobile intertidal ectotherms could survive locally under warmer conditions if they can locate and move behaviourally in local thermal refuges. N. atramentosa behaviour, water content and body temperature during emersion seem to be related to the thermal stability and local conditions of the habitat occupied. Aggregation behaviour reduces both desiccation and heat stresses but only on the boulder field. Further investigations are required to identify the different behavioural strategies used by ectothermic species to adapt to heat and dehydrating conditions at the habitat level. Ultimately, this information constitutes a fundamental prerequisite to implement conservation management plans for ectothermic species identified as vulnerable in the warming climate.
机译：潮间带生物已经生活在其热耐受窗的上限或附近，因此容易受到全球变暖的影响。然而，等温线的行为可能会削弱其有限的生理能力以应对气候变化（例如，干燥和温暖的环境条件），从而可能大大提高其存活率。在气候变化研究中，大多数仍然忽略了外热行为。在这里，我们调查了南澳大利亚潮间腹足纲物种（Nerita atramentosa）的聚集行为以补偿气候变化的潜力。我们使用热成像技术研究了（1）在白天和晚上之间相距250 m的两个地形不同的生境（即岩石平台和巨石）上各个蜗牛的水分含量，体温和周围基质温度的异质性，（2 ）环境温度（空气和基质）与蜗牛含水量和体温之间的潜在关系；（3）聚集行为对蜗牛含水量和体温的潜在缓冲作用。在较小的空间尺度（几厘米到几米），底层和蜗牛的温度比生境之间的温度更不均匀。这进一步证明了潮间带等温线可以在温暖的条件下在局部热庇护所中定位和移动，因此它们可以在较热的条件下在局部生存。出现期间，atramentosa猪笼草的行为，水分含量和体温似乎与所居住栖息地的热稳定性和局部条件有关。聚集行为减少了干燥应力和热应力，但仅在巨石场上。需要进行进一步的调查，以找出由放热物种在生境水平上适应热和脱水条件的不同行为策略。最终，这些信息构成了实施针对在变暖气候中被确定为脆弱物种的外热物种的保护管理计划的基本前提。

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  • 来源
    《Ecological research》 |2013年第3期|407-416|共10页
  • 作者

    Coraline Chapperon; Cedric Le Bris; Laurent Seuront;

  • 作者单位

    School of Biological Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia;

    School of Biological Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia,Laboratoire des Sciences de l'Environnement Marin, Universite de Bretagne Occidentale, UMR 6539, Brest, France;

    School of Biological Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia,Aquatic Sciences, South Australian Research and Development Institute, West Beach, SA 5022, Australia,Centre National de la Recherche Scientifique, Laboratoire d'Oceanologie et de Geosciences, Universite des Sciences et Technologies de Lille, UMR LOG 8187 Station Marine, 62930 Wimereux, France;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Body temperature; Water content; Aggregation; Snail; Thermal imaging; Rocky shore Ectotherms; Desiccation stress; Thermal stress; Conservation management;

    机译：体温;含水量;聚合;蜗牛;热成像;多岩石的海岸干燥应力;热应力;养护管理;

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