Comparative Phylogeny and Historical Perspectives on Population Genetics of the Pacific Hawksbill (Eretmochelys imbricata) and Green Turtles (Chelonia mydas), Inferred from Feeding Populations in the Yaeyama Islands, Japan
Comparative Phylogeny and Historical Perspectives on Population Genetics of the Pacific Hawksbill (Eretmochelys imbricata) and Green Turtles (Chelonia mydas), Inferred from Feeding Populations in the Yaeyama Islands, Japan
复制标题
从日本八重山群岛的摄食种群推断太平洋玳瑁 (Eretmochelys imbricata) 和绿海龟 (Chelonia mydas) 种群遗传学的比较系统发育和历史观点
作者：
H. Nishizawa;J. Okuyama;Masato Kobayashi;O. Abe;N. Arai
线粒体DNA序列多态性和遗传多样性模式代表了历史、地理和人口事件对人群的谱系和相对影响。本文以日本八山群岛的食性种群为研究对象，对太平洋地区玳瑁（Eretmochelys imbricata）和绿龟（Chelonia mydas）种群动态和分化的历史模式进行了研究。单倍型的系统发育关系表明，太平洋玳瑁和绿海龟在过去100万年中可能经历了非常相似的种群动态模式和过程，在更新世早期经历了种群细分，在末次盛冰期之后经历了种群扩张。这些重大的当代历史事件被认为是由气候和海平面波动引起的。另一方面，将我们的结果与大西洋的长期种群动态进行比较，更新世早期的种群细分仅针对太平洋玳瑁和绿海龟。因此，历史人口动态存在区域差异。尽管取样地点有限，但这些结果是通过系统遗传学和群体遗传学估计太平洋海龟历史趋势的第一步。
Mitochondrial DNA sequence polymorphisms and patterns of genetic diversity represent the genealogy and relative impacts of historical, geographic, and demographic events on populations. In this study, historical patterns of population dynamics and differentiation in hawksbill (Eretmochelys imbricata) and green turtles (Chelonia mydas) in the Pacific were estimated from feeding populations in the Yaeyama Islands, Japan. Phylogenetic relationships of the haplotypes indicated that hawksbill and green turtles in the Pacific probably underwent very similar patterns and processes of population dynamics over the last million years, with population subdivision during the early Pleistocene and population expansion after the last glacial maximum. These significant contemporary historical events were suggested to have been caused by climatic and sea-level fluctuations. On the other hand, comparing our results to long-term population dynamics in the Atlantic, population subdivisions during the early Pleistocene were specific to Pacific hawksbill and green turtles. Therefore, regional differences in historical population dynamics are suggested. Despite limited sampling locations, these results are the first step in estimating the historical trends in Pacific sea turtles by using phylogenetics and population genetics.
影响因子：
3.3
作者：
Yunxin Fu
通讯作者：
Yunxin Fu