Genetic characteristics of a small breeding population of ancient murrelets from Teuri Island, Japan, based on mitochondrial <scp>DNA</scp> sequences and newly‐developed microsatellite markers
Genetic characteristics of a small breeding population of ancient murrelets from Teuri Island, Japan, based on mitochondrial <scp>DNA</scp> sequences and newly‐developed microsatellite markers
复制标题
基于线粒体 <scp>DNA</scp> 序列和新开发的微卫星标记，日本 Teuri 岛古海雀小型繁殖群体的遗传特征
DOI：
10.1111/1440-1703.12226
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发表时间：
2021
影响因子：
2
通讯作者：
Nishiumi Isao
中科院分区：
文献类型：
--
作者：
Sugita Norimasa;Matsui Shin;Yoshikawa Natsuhiko;Nishiumi Isao
一小部分的古代海象（学名：Synthliboramphus antiquus）在日本Teuri岛的垂直海崖上筑巢和繁殖。虽然这一小种群面临灭绝的高风险，但由于缺乏基本数据，例如生态和遗传信息，没有制定切实可行的保护计划。在这里，线粒体DNA和微卫星分析进行了收集在Teuri和阿留申群岛繁殖种群的古代muralts，以及越冬的个人在日本和博物馆标本。线粒体DNA分析显示，Teuri人口与阿留申人口共享单倍型，但不与不列颠哥伦比亚和堪察加半岛人口从以前的研究。微卫星分析显示，高基因流之间的Teuri和阿留申群岛的育种群体。没有证据表明Teuri种群的遗传多样性丧失。博物馆的标本拥有一些独特的等位基因，在最近的样本中没有发现。我们的研究结果表明，特乌里和阿留申种群的保护策略应单独管理，从那些设计的繁殖种群在东太平洋地区，至少。对于特乌里种群的保护，我们不建议圈养繁殖，因为特乌里和阿留申种群之间的基因流，但保护筑巢栖息地和监测人口指标将更有效地保持其遗传多样性和人口规模。
A small population of ancient murrelets (Synthliboramphus antiquus) nests and breeds on vertical sea cliffs in Teuri Island, Japan. Although this small population is at high risk of extinction, practical conservation plans were not established owing to the lack of basic data, for example, ecological and genetic information. Here, mitochondrial DNA and microsatellite analyses were performed on ancient murrelets collected in the Teuri and Aleutian breeding populations, as well as on wintering individuals in Japan and museum specimens. Mitochondrial DNA analysis revealed that the Teuri population shared haplotypes with the Aleutian population, but not with the British Columbian and the Kamchatka populations from a previous study. Microsatellite analysis revealed high gene flow between the Teuri and Aleutian breeding populations. There was no evidence of loss of genetic diversity in the Teuri population. Museum specimens possessed some unique alleles not found in the more recent samples. Our results suggest that strategies for the conservation of Teuri and Aleutian populations should be managed separately from those designed for breeding populations in the eastern Pacific region, at the very least. For conservation of the Teuri population, we do not recommend captive breeding because of gene flow between Teuri and Aleutian populations, but protection of nesting habitats and monitoring of demographic indexes would be more effective for maintaining their genetic diversity and population size.