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研究揭示气候和基因对候鸟迁徙的影响
2021-03-04 21:44

中国科学院动物研究所詹祥江团队揭示气候和基因对候鸟迁徙的影响。这一研究成果于2021年3月3日在线发表在国际学术期刊《自然》上。

研究人员建立了一个大陆规模的迁徙系统,该系统使用卫星跟踪来追踪欧亚北极地区6个种群中的56只游隼(Falco peregrinus),并对其中4个种群的35个基因组进行了重新测序。繁殖种群使用了五条穿越欧亚大陆的迁徙路线,这可能是由于在从最后一次冰河极大期到全新世时期的过渡期间它们的繁殖地发生了纵向和纬度变化而形成的。路线之间的当代环境差异似乎保持了它们的独特性。

研究人员发现,基因ADCY8与人口迁移距离的水平差异有关,并揭示了该基因的调控机制,发现长期记忆是最容易在游隼群体中ADCY8发生分化的选择因子。研究人员预计全球变暖会影响迁徙策略并缩小欧亚北极游隼种群的繁殖范围。利用生态相互作用和进化过程来研究气候驱动的迁徙变化可以促进对候鸟的保护。 

据了解,北极地区数以百万计的候鸟栖息在季节性有利的繁殖地上,但人们对北极鸟迁徙路线的形成、维持和未来以及迁徙距离的遗传决定因素知之甚少。

附:英文原文

Title: Climate-driven flyway changes and memory-based long-distance migration

Author: Zhongru Gu, Shengkai Pan, Zhenzhen Lin, Li Hu, Xiaoyang Dai, Jiang Chang, Yuanchao Xue, Han Su, Juan Long, Mengru Sun, Sergey Ganusevich, Vasiliy Sokolov, Aleksandr Sokolov, Ivan Pokrovsky, Fen Ji, Michael W. Bruford, Andrew Dixon, Xiangjiang Zhan

Issue&Volume: 2021-03-03

Abstract: Millions of migratory birds occupy seasonally favourable breeding grounds in the Arctic1, but we know little about the formation, maintenance and future of the migration routes of Arctic birds and the genetic determinants of migratory distance. Here we established a continental-scale migration system that used satellite tracking to follow 56 peregrine falcons (Falco peregrinus) from 6 populations that breed in the Eurasian Arctic, and resequenced 35 genomes from 4 of these populations. The breeding populations used five migration routes across Eurasia, which were probably formed by longitudinal and latitudinal shifts in their breeding grounds during the transition from the Last Glacial Maximum to the Holocene epoch. Contemporary environmental divergence between the routes appears to maintain their distinctiveness. We found that the gene ADCY8 is associated with population-level differences in migratory distance. We investigated the regulatory mechanism of this gene, and found that long-term memory was the most likely selective agent for divergence in ADCY8 among the peregrine populations. Global warming is predicted to influence migration strategies and diminish the breeding ranges of peregrine populations of the Eurasian Arctic. Harnessing ecological interactions and evolutionary processes to study climate-driven changes in migration can facilitate the conservation of migratory birds.

DOI: 10.1038/s41586-021-03265-0

Source: https://www.nature.com/articles/s41586-021-03265-0

Nature:《自然》,创刊于1869年。隶属于施普林格·自然出版集团,最新IF:69.504
官方网址:http://www.nature.com/
投稿链接:http://www.nature.com/authors/submit_manuscript.html


本期文章:《自然》:Online/在线发表

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