生物多样性 ›› 2019, Vol. 27 ›› Issue (12): 1291-1297.DOI: 10.17520/biods.2019255

• 研究报告: 动物多样性 • 上一篇    下一篇

基于基因组SNPs的南极恩克斯堡岛阿德利企鹅繁殖种群的遗传结构

张剑,董路,张雁云()   

  1. 生物多样性与生态工程教育部重点实验室, 北京师范大学生命科学学院, 北京 100875
  • 收稿日期:2019-08-16 接受日期:2019-11-20 出版日期:2019-12-20 发布日期:2020-01-14
  • 通讯作者: 张雁云
  • 基金资助:
    南极恩克斯堡岛企鹅保护区项目(23020005);南大洋鸟类多样性和分布格局调查项目(JDXT2019-02)

Population genetic structure of Adélie penguins (Pygoscelis adeliae) from Inexpressible Island, Antarctica, using SNP markers

Jian Zhang,Lu Dong,Yanyun Zhang()   

  1. College of Life Sciences, Beijing Normal University, Beijing 100875
  • Received:2019-08-16 Accepted:2019-11-20 Online:2019-12-20 Published:2020-01-14
  • Contact: Zhang Yanyun

摘要:

我国提议在南极恩克斯堡岛新站址北侧3 km的阿德利企鹅(Pygoscelis adeliae)聚集繁殖地建立南极特别保护区, 对保护区边界的划分, 各国尚存争议, 尤其是对南湾(South Bay)的繁殖小种群是否具有遗传独特性, 是否应将其纳入保护区是重点关注的问题。本研究采集了恩克斯堡岛海景湾(Seaview Bay)和南湾的阿德利企鹅样品, 通过全基因组重测序和种群基因组学方法, 分析了恩克斯堡岛不同区域的种群遗传结构。发现恩克斯堡岛海景湾与南湾阿德利企鹅没有显著的遗传分化, 南湾阿德利企鹅不是独特的小种群; 海景湾高海拔区域个体与低海拔区域个体之间也没有显著的遗传差异, 推测该区域阿德利企鹅繁殖群体的分布格局与冰川堆积形成的阶地不具有显著相关性。本工作为恩克斯堡岛保护区和罗斯海新站建设提供了重要科技支撑。

关键词: 恩克斯堡岛, 阿德利企鹅, 遗传结构, 南极特别保护区, SNPs

Abstract:

China has proposed to establish an Antarctic Specially Protected Area (ASPA) to protect the Adélie penguin, Pygoscelis adeliae, colonies on Inexpressible Island. However, the boundary of the proposed ASPA is disputed mainly by whether the South Bay population is a distinct genetic population in need of protection. We collected samples of Adélie penguins from the South Bay and neighboring Seaview Bay on Inexpressible Island and identified SNPs via Illumina sequencing for population structure analysis. Our results indicated that there was no significant genetic difference between the South Bay colonies and the Seaview Bay colonies, or between the higher and lower elevational colonies in the Seaview Bay. Thus, the breeding populations of Adélie penguin on the island could be recognized as a single conservation unit. The currently proposed boundary of the ASPA, which covers the majority of breeding populations in Seaview Bay, would be sufficient to protect the genetic diversity of Adélie penguins in Inexpressible Island.

Key words: Inexpressible Island, Pygoscelis adeliae, population structure, Antarctic Specially Protected Area, SNPs