Genetic stock compositions and natal origin of green turtle (Chelonia mydas) foraging at Brunei Bay
Genetic stock compositions and natal origin of green turtle (Chelonia mydas) foraging at Brunei Bay
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DOI：
10.1016/j.gecco.2016.01.003
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发表时间：
2016-04-01
影响因子：
4
通讯作者：
Katoh, Masaya
中科院分区：
文献类型：
--
作者：
Joseph, Juanita;Nishizawa, Hideaki;Katoh, Masaya
了解濒危绿色海龟的遗传组成和生长阶段，以及筑巢地和觅食地之间的联系，对于有效保护非常重要。在文莱湾共捕获绿色海龟42只，背甲弯曲长度为43.8 ~ 102.0 cm，多数为成年和大型幼龟。线粒体DNA控制区序列显示12种单倍型。大多数单倍型包含相同的序列，以前发现的单倍型在西太平洋，东南亚和印度洋的rookeries。文莱湾的单倍型和核苷酸多样性指数分别为0.8444 +/- 0.0390和0.009350 +/- 0.004964。混合种群分析（无信息和有信息的人口规模加权）估计的主要贡献来自苏禄海（平均值>= 45.31%），马来西亚半岛（平均值>= 17.42%）和沙捞越（平均值>= 12.46%）的东南亚rookeries。特别是，苏禄海栖息地的贡献估计是最高的和较低的置信区间大于零（>= 24.36%）。当估计的贡献，而不是个别的rookeries的区域，结果表明，文莱湾主要来自东南亚rookeries。研究结果表明，个体发生转变觅食的理由，并提供保护东南亚绿色海龟的影响。(C)2016年6月，作者。由Elsevier B出版。诉
Knowledge of genetics composition and growth stages of endangered green turtles, as well as the connectivity between nesting and foraging grounds is important for effective conservation. A total of 42 green turtles were captured at Brunei Bay with curved carapace length ranging from 43.8 to 102.0 cm, and most sampled individuals were adults and large juveniles. Twelve haplotypes were revealed in mitochondrial DNA control region sequences. Most haplotypes contained identical sequences to haplotypes previously found in rookeries in the Western Pacific, Southeast Asia, and the Indian Ocean. Haplotype and nucleotide diversity indices of the Brunei Bay were 0.8444 +/- 0.0390 and 0.009350 +/- 0.004964, respectively. Mixed-stock analysis (for both uninformative and informative prior weighting by population size) estimated the main contribution from the Southeast Asian rookeries of the Sulu Sea (mean >= 45.31%), Peninsular Malaysia (mean >= 17.42%), and Sarawak (mean >= 12.46%). Particularly, contribution from the Sulu Sea rookery was estimated to be the highest and lower confidence intervals were more than zero (>= 24.36%). When estimating contributions by region rather than individual rookeries, results showed that Brunei Bay was sourced mainly from the Southeast Asian rookeries. The results suggest an ontogenetic shift in foraging grounds and provide conservation implications for Southeast Asian green turtles. (C) 2016 The Authors. Published by Elsevier B. V.