Rapid, but limited, zooplankton adaptation to simultaneous warming and acidification
Rapid, but limited, zooplankton adaptation to simultaneous warming and acidification
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DOI：
10.1038/s41558-021-01131-5
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发表时间：
2021-08-26
影响因子：
30.7
通讯作者：
Pespeni, Melissa H.
中科院分区：
文献类型：
--
作者：
Dam, Hans G.;deMayo, James A.;Pespeni, Melissa H.
预测海洋动物对气候变化的反应受到缺乏多代进化适应研究的阻碍，特别是对海洋变暖和酸化的影响。我们提供的证据快速适应OWA的基础桡足类物种，Acartia tonsa，通过评估的基础上，一套全面的生活史特征的人口健身的变化，使用正交实验设计的标称温度（18摄氏度，22摄氏度）和p（CO2）（400，2,000亩大气压）为25代（类似于1年）。产蛋量和孵化成功率最初在OWA下下降，导致健身减少56%。然而，这两个特征恢复到第三代，平均健身此后仅减少了9%。在后代中，变暖和酸化之间的对抗性相互作用降低了生存率，从而限制了全面的适应性恢复。我们的研究结果表明，这种相互作用限制了进化救援，并增加了预测动物种群对气候变化的反应的复杂性。
Predicting the response of marine animals to climate change is hampered by a lack of multigenerational studies on evolutionary adaptation, particularly to combined ocean warming and acidification (OWA). We provide evidence for rapid adaptation to OWA in the foundational copepod species, Acartia tonsa, by assessing changes in population fitness on the basis of a comprehensive suite of life-history traits, using an orthogonal experimental design of nominal temperature (18 degrees C, 22 degrees C) and p(CO2) (400, 2,000 mu atm) for 25 generations (similar to 1 year). Egg production and hatching success initially decreased under OWA, resulting in a 56% reduction in fitness. However, both traits recovered by the third generation, and average fitness was reduced thereafter by only 9%. Antagonistic interactions between warming and acidification in later generations decreased survival, thereby limiting full fitness recovery. Our results suggest that such interactions constrain evolutionary rescue and add complexity to predictions of the responses of animal populations to climate change.