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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Season-dependent effects of ocean warming on the physiological performance of a native and a non-native sea anemone
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Season-dependent effects of ocean warming on the physiological performance of a native and a non-native sea anemone

机译：海洋变暖对本地和非本地海葵生理行为的季节依赖性影响

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摘要

The effects of ocean warming on the physiological performance of marine organisms have been widely studied. However, few studies have considered the relevance of seasonal acclimation to elevated temperatures and whether native and non-native species have similar tolerances to warming. We tested the hypotheses that the susceptibility to warming in two species of sea anemones from temperate latitudes is (i) higher in winter than in summer, and (ii) higher in the native than in the non-native species. Seasonal variability in the upper thermal tolerance limit of Anthothoe chilensis (native) and Anemonia alicemartinae (non-native) individuals from the northern-central coast of Chile was assessed in laboratory experiments during the austral winter 2015 and summer 2016. In line with our predictions, seawater warming (up to 16 degrees C above natural levels) significantly suppressed individual performance proxies such as survival and asexual reproduction (longitudinal fission) in the native species, but not in the non-native species. However, asexual reproduction in the non-native sea anemone was rare across warming treatments, and the native species showed a stronger capacity to detach from the substratum under adverse thermal conditions. Negative effects of warming on survival and fission were evident only in winter, when asexual reproduction is more intense in these taxa. Finally, water temperatures of 30 degrees C or more were lethal for both native and non-native sea anemones. These results show that the non-native species may have a broader thermal tolerance (in terms of survival) than the native taxonomically related species, but the latter displays behavioral adaptations to avoid adverse conditions of high temperatures. We suggest that knowledge about life history traits related to seasonal variations in water temperature and the invasion status of a species can help to predict its performance in a warming ocean.
机译：海洋变暖对海洋生物的生理性能的影响已得到广泛研究。但是，很少有研究考虑季节性适应与升高温度的相关性以及本地和非本地物种对变暖的容忍度。我们检验了以下假设，即来自温带纬度的两种海葵对气候变暖的敏感性是：（i）冬季高于夏季，（ii）本地比非本地物种更高。在2015年南方冬季和2016年夏季，通过实验室实验评估了智利中北部海岸的Anthothoe chilensis（天然）和Anemonia alicemartinae（非天然）个体的热耐受上限的季节性变化。符合我们的预测，海水变暖（比自然水平高出16摄氏度）显着抑制了个体的性能指标，例如在本地物种中的生存和无性繁殖（纵向裂变），而在非本地物种中则没有。然而，在非自然海葵中，无性繁殖在整个变暖过程中很少见，并且在不利的热条件下，本地物种显示出更强的脱离基质的能力。变暖对生存和裂变的负面影响仅在冬季出现，而无性繁殖在这些类群中更为强烈。最后，对于本地海葵和非本地海葵而言，摄氏30度或以上的水温都是致命的。这些结果表明，与本地生物分类相关的物种相比，非本地物种可能具有更宽的热耐受性（就生存而言），但后者显示出行为适应性，可以避免高温的不利条件。我们建议，有关与水温季节性变化和物种入侵状态有关的生命历史特征的知识可以帮助预测其在变暖海洋中的表现。

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  • 来源
    《Journal of Experimental Marine Biology and Ecology》 |2020年第1期|151229.1-151229.8|共8页
  • 作者

    Luis Suarez Jose; Hansen Miriam; Urtubia Ulyces; Lenz Mark; Valdivia Nelson; Thiel Martin;

  • 作者单位

    Univ Catolica Norte Fac Ciencias Mar Larrondo 1281 Coquimbo 1281 Chile|Univ Austral Chile Fac Ciencias Inst Ciencias Marinas & Limnol Campus Isla Teja Valdivia Chile;

    Univ Catolica Norte Fac Ciencias Mar Larrondo 1281 Coquimbo 1281 Chile|Helmholtz Ctr Ocean Reasearch Inst GEOMAR Kiel Germany;

    Univ Catolica Norte Fac Ciencias Mar Larrondo 1281 Coquimbo 1281 Chile;

    Helmholtz Ctr Ocean Reasearch Inst GEOMAR Kiel Germany;

    Univ Austral Chile Fac Ciencias Inst Ciencias Marinas & Limnol Campus Isla Teja Valdivia Chile|Ctr FONDAP Invest Dinam Ecosistemas Marinos Altas Valdivia Chile;

    Univ Catolica Norte Fac Ciencias Mar Larrondo 1281 Coquimbo 1281 Chile|Millennium Nucleus Ecol & Sustainable Management Coquimbo Chile|CEAZA Coquimbo Chile;

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  • 正文语种 eng
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  • 关键词

    Ocean warming; Thermal tolerance; Seasonality; Anthothoe chilensis; Anemonia alicemartinae;

    机译：海洋变暖;热容差季节性;智利蚁hot;海葵;

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