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首页> 外文期刊>Marine biology >Divergent thermal sensitivities among different life stages of the pulmonate limpet Siphonaria japonica
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Divergent thermal sensitivities among different life stages of the pulmonate limpet Siphonaria japonica

机译：肺生虹吸虫不同生命阶段的不同热敏感性。

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摘要

The different life-history stages of organisms may have divergent thermal limits and thus respond differently to global warming. For comprehensive understanding of the ecological impacts of global warming, it is crucial to determine thermal limits among different life stages and to understand how close an organism lives to its thermal limits at different life stages. Here, we measured the effect of temperature on hatching and the lethal temperature (LT50, lethal temperature of 50%) of larvae to explore effects of high temperature on the encapsulated and planktonic stages of the pulmonate limpet Siphonaria japonica. We measured cardiac performance to determine adult limpets' thermal limit. At the encapsulated stage, heat shock at 34.5 degrees C affected larval hatching significantly. Pelagic larvae showed a high LT50 (45.03 degrees C), indicating a high thermal tolerance for the pelagic larval stage. For the adults, the Arrhenius break temperature and flatline temperature were 38.49 +/- 1.27 and 44.27 +/- 1.08 degrees C, respectively. The integrated study of environmental temperatures and thermal sensitivities at different life stages of S. japonica indicates that the egg ribbon and adult stages are potentially most sensitive to the future temperature increases on subtropical shores.
机译：生物的不同生命历史阶段可能具有不同的温度极限，因此对全球变暖的反应也不同。为了全面了解全球变暖的生态影响，至关重要的是确定不同生命阶段之间的温度极限，并了解生物体在不同生命阶段如何接近其热极限。在这里，我们测量了温度对孵化率和幼虫的致死温度（LT50，致死温度为50％）的影响，以探讨高温对肺门贝Si蒲的包裹和浮游阶段的影响。我们测量了心脏的表现，以确定成年贝类的热极限。在封装阶段，在34.5摄氏度下的热冲击会显着影响幼虫的孵化。上层幼虫显示出较高的LT50（45.03摄氏度），表明对上层幼虫阶段具有较高的耐热性。对于成年人，阿累尼乌斯断裂温度和扁平温度分别为38.49 +/- 1.27和44.27 +/- 1.08摄氏度。粳稻不同生命阶段的环境温度和热敏感性的综合研究表明，卵带和成年阶段可能对亚热带海岸未来的温度升高最敏感。

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  • 来源
    《Marine biology》 |2017年第6期|125.1-125.10|共10页
  • 作者

    Wang Wei; Ding Meng-wen; Li Xiao-xu; Wang Jie; Dong Yun-wei;

  • 作者单位

    Xiamen Univ, State Key Lab Marine Environm Sci, Coll Ocean & Earth Sci, Xiamen 361102, Fujian, Peoples R China;

    Xiamen Univ, State Key Lab Marine Environm Sci, Coll Ocean & Earth Sci, Xiamen 361102, Fujian, Peoples R China;

    Xiamen Univ, State Key Lab Marine Environm Sci, Coll Ocean & Earth Sci, Xiamen 361102, Fujian, Peoples R China;

    Xiamen Univ, State Key Lab Marine Environm Sci, Coll Ocean & Earth Sci, Xiamen 361102, Fujian, Peoples R China;

    Xiamen Univ, State Key Lab Marine Environm Sci, Coll Ocean & Earth Sci, Xiamen 361102, Fujian, Peoples R China|Xiamen Univ, Fujian Collaborat Innovat Ctr Exploitat & Utiliza, Xiamen 361102, Fujian, Peoples R China|Xiamen Univ, Xiamen City Key Lab Urban Sea Ecol Conservat & Re, Xiamen 361102, Fujian, Peoples R China;

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