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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Trans-Pacific migrations of the loggerhead turtle (Caretta caretta) demonstrated with mitochondrial DNA markers.
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Trans-Pacific migrations of the loggerhead turtle (Caretta caretta) demonstrated with mitochondrial DNA markers.

机译：用线粒体DNA标记证明了龟（Caretta caretta）的跨太平洋迁移。

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摘要

Juvenile loggerhead turtles (Caretta caretta) have recently been documented in the vicinity of Baja California and thousands of these animals have been captured in oceanic fisheries of the North Pacific. The presence of loggerhead turtles in the central and eastern North Pacific is a prominent enigma in marine turtle distribution because the nearest documented nesting concentrations for this species are in Australia and Japan, over 10,000 km from Baja California. To determine the origin of the Baja California feeding aggregate and North Pacific fishery mortalities, samples from nesting areas and pelagic feeding aggregates were compared with genetic markers derived from mtDNA control region sequences. Overall, 57 of 60 pelagic samples (95%) match haplotypes seen only in Japanese nesting areas, implicating Japan as the primary source of turtles in the North Pacific Current and around Baja California. Australian nesting colonies may contribute the remaining 5% of these pelagic feeding aggregates. Juvenileloggerhead turtles apparently traverse the entire Pacific Ocean, approximately one-third of the planet, in the course of developmental migrations, but mortality in high-seas fisheries raises concern over the future of this migratory population.
机译：最近在巴哈加州附近发现了小海龟（Caretta caretta），在北太平洋的海洋渔业中捕获了成千上万的此类动物。 turtle龟在北太平洋中部和东部的存在是海龟分布中的一个突出谜团，因为据记录，该物种最近的筑巢浓度在澳大利亚和日本，距下加利福尼亚州超过10,000公里。为了确定下加利福尼亚州的饲料聚集体和北太平洋渔业死亡率的来源，将巢区和中上层饲料聚集体的样品与源自mtDNA控制区序列的遗传标记进行了比较。总体而言，在60个远洋样本中，有57个样本（95％）与仅在日本筑巢地区看到的单倍型相匹配，这暗示日本是北太平洋洋流和下加利福尼亚州海龟的主要来源。澳大利亚筑巢殖民地可能贡献了这些中上层鱼饲料中剩余的5％。在发展性迁徙的过程中，幼年s显然遍历了整个太平洋，约占地球的三分之一，但公海渔业的死亡率引起了对该迁徙人口的未来的关注。

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