当前位置:
X-MOL 学术
›
J. Evol. Biol.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Evolutionary rescue at different rates of environmental change is affected by trade-offs between short-term performance and long-term survival.
Journal of Evolutionary Biology ( IF 2.1 ) Pub Date : 2021-05-21 , DOI: 10.1111/jeb.13797 Martta Liukkonen 1 , Ilkka Kronholm 1 , Tarmo Ketola 1
Journal of Evolutionary Biology ( IF 2.1 ) Pub Date : 2021-05-21 , DOI: 10.1111/jeb.13797 Martta Liukkonen 1 , Ilkka Kronholm 1 , Tarmo Ketola 1
Affiliation
As climate change accelerates and habitats free from anthropogenic impacts diminish, populations are forced to migrate or to adapt quickly. Evolutionary rescue (ER) is a phenomenon, in which a population is able to avoid extinction through adaptation. ER is considered to be more likely at slower rates of environmental change. However, the effects of correlated characters on evolutionary rescue are seldom explored yet correlated characters could play a major role in ER. We tested how evolutionary background in different fluctuating environments and the rate of environmental change affect the probability of ER by exposing populations of the bacteria Serratia marcescens to two different rates of steady temperature increase. As suggested by theory, slower environmental change allowed populations to grow more effectively even at extreme temperatures, but at the expense of long-term survival at extreme conditions due to correlated selection. Our results indicate important gap of knowledge on the effects of correlated selection during the environmental change and on evolutionary rescue at differently changing environments.
中文翻译:
不同环境变化速率下的进化救援受到短期表现和长期生存之间权衡的影响。
随着气候变化加速和不受人为影响的栖息地减少,人口被迫迁移或快速适应。进化拯救(ER)是一种现象,其中一个种群能够通过适应避免灭绝。ER 被认为在环境变化速度较慢的情况下更有可能发生。然而,很少探索相关特征对进化拯救的影响,但相关特征可能在 ER 中发挥重要作用。我们通过将粘质沙雷氏菌种群暴露于两种不同的稳定温度升高速率来测试不同波动环境中的进化背景和环境变化率如何影响 ER 的概率。正如理论所暗示的那样,即使在极端温度下,较慢的环境变化也使人口能够更有效地生长,但由于相关选择而以在极端条件下的长期生存为代价。我们的结果表明,在环境变化期间相关选择的影响和不同变化环境下的进化救援方面存在重要的知识差距。
更新日期:2021-05-08
中文翻译:
不同环境变化速率下的进化救援受到短期表现和长期生存之间权衡的影响。
随着气候变化加速和不受人为影响的栖息地减少,人口被迫迁移或快速适应。进化拯救(ER)是一种现象,其中一个种群能够通过适应避免灭绝。ER 被认为在环境变化速度较慢的情况下更有可能发生。然而,很少探索相关特征对进化拯救的影响,但相关特征可能在 ER 中发挥重要作用。我们通过将粘质沙雷氏菌种群暴露于两种不同的稳定温度升高速率来测试不同波动环境中的进化背景和环境变化率如何影响 ER 的概率。正如理论所暗示的那样,即使在极端温度下,较慢的环境变化也使人口能够更有效地生长,但由于相关选择而以在极端条件下的长期生存为代价。我们的结果表明,在环境变化期间相关选择的影响和不同变化环境下的进化救援方面存在重要的知识差距。