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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Ocean acidification exacerbates the impacts of global warming on embryonic little skate, Leucoraja erinacea (Mitchill)
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Ocean acidification exacerbates the impacts of global warming on embryonic little skate, Leucoraja erinacea (Mitchill)

机译：海洋酸化加剧了全球变暖对胚胎小冰鞋Leucoraja erinacea（Mitchill）的影响

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摘要

Ocean acidification and warming have the potential to profoundly impact marine fishes by reducing embryo fitness and survival. Local adaptation to thermal gradients may reduce the impact of global warming, but whether fish from different populations may respond differently to climatic stressors remains unknown. The hypothesis that acidification and warming may have an effect on development, aerobic scope, and survival was tested in little skate (Leucoraja erinacea) embryos from two latitudinally separated populations. Temperature had the strongest effect on development, survival and metabolic rates, but acidification further exacerbated stress on embryos from the Gulf of Maine population by increasing the costs of activity, development time, and reducing body condition of newly hatched skates. Active metabolic rates of both populations exhibited countergradient variation with peak of performance at 18 degrees C, but were affected differently by acidification. These findings demonstrate that even adjacent fish populations may respond differently to increasing temperature and acidification and emphasize the need for multi-stressor studies on different populations of fishes with wide geographic range to understand complex responses to climate change and other environmental challenges. (C) 2014 Elsevier B.V. All rights reserved.
机译：海洋酸化和变暖可能会通过降低胚胎适应性和存活率而深刻影响海洋鱼类。对温度梯度的局部适应可能会减少全球变暖的影响，但是来自不同种群的鱼类对气候压力的反应是否有所不同仍然未知。酸化和变暖可能对发育，有氧运动范围和存活率有影响的假说在来自两个纬度分离的种群的小轮滑（Leucoraja erinacea）胚胎中得到了检验。温度对发育，存活和代谢率的影响最大，但是酸化通过增加活动成本，发育时间和减少刚孵化的冰鞋的身体状况，进一步加剧了来自缅因州海湾种群的胚胎的压力。两种种群的活性代谢率均在18°C时表现出与峰值相反的梯度变化，但受到酸化的影响不同。这些发现表明，即使相邻的鱼类种群对温度升高和酸化的反应也可能有所不同，并强调有必要针对地理范围广泛的不同鱼类种群进行多重应激研究，以了解对气候变化和其他环境挑战的复杂反应。 （C）2014 Elsevier B.V.保留所有权利。

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