Evidence for transoceanic migrations by loggerhead sea turtles in the southern Pacific Ocean
Evidence for transoceanic migrations by loggerhead sea turtles in the southern Pacific Ocean
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DOI：
10.1098/rspb.2008.1931
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发表时间：
2009-06-07
影响因子：
4.7
通讯作者：
Waycott, M.
中科院分区：
文献类型：
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作者：
Boyle, M. C.;FitzSimmons, N. N.;Waycott, M.
在北方太平洋和北方大西洋，刚孵化的红海龟（Caretta caretta）进行跨洋的发育性迁徙。据推测，在南太平洋也有类似的迁移行为，因为在秘鲁渔业中观察到孵化后的红海龟，但在南美洲沿海沿着没有红海龟的栖息地。这一假设得到了支持的大小级分布的123后孵化的海龟在南太平洋和遗传分析的mtDNA单倍型的103嵌套女性在西南太平洋，19后孵化的海龟搁浅在澳大利亚东南部的海滩和22后孵化的秘鲁延绳钓渔业捕获。只有两个单倍型（CCP 1 93%和CCP 5 7%），在所有样本中观察到，有没有西南太平洋的rookeries和孵化后的单倍型频率之间的差异不显著。相比之下，在北太平洋种群中很少观察到占优势的CCP 1单倍型，并且单倍型频率在两个区域之间存在很大差异（F-st = 0.82; p = 0.001）。
Post-hatchling loggerhead turtles (Caretta caretta) in the northern Pacific and northern Atlantic Oceans undertake transoceanic developmental migrations. Similar migratory behaviour is hypothesized in the South Pacific Ocean as post-hatchling loggerhead turtles are observed in Peruvian fisheries, yet no loggerhead rookeries occur along the coast of South America. This hypothesis was supported by analyses of the size-class distribution of 123 post-hatchling turtles in the South Pacific and genetic analysis of mtDNA haplotypes of 103 nesting females in the southwest Pacific, 19 post-hatchlings stranded on the southeastern Australian beaches and 22 post-hatchlings caught by Peruvian longline fisheries. Only two haplotypes (CCP1 93% and CCP5 7%) were observed across all samples, and there were no significant differences in haplotype frequencies between the southwest Pacific rookeries and the post-hatchlings. By contrast, the predominant CCP1 haplotype is rarely observed in North Pacific rookeries and haplotype frequencies were strongly differentiated between the two regions (F-st = 0.82; p =