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Regional Conservation Implications of Green Turtle (Chelonia mydas) Genetic Stock Composition in China

机译：中国绿龟遗传种群组成的区域保护意义

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摘要

Sea turtles are globally endangered and face anthropogenic threats, such as direct harvest, bycatch, and habitat degradation. Genetic studies help identify connectivity between nesting and foraging grounds for conservation and management. However, information on genetic stock composition of green turtles (Chelonia mydas) in the South China Region (including Hong Kong, Guangdong Province, and Taiwan) is severely limited. In this study, mixed stock analysis based on the 760-bp mitochondrial DNA (mtDNA) control region of green turtles (n = 110) revealed that the primary source rookeries in the Pacific contributing to foraging green turtle aggregations in the South China Region were Peninsular Malaysia, Yap in the Federated States of Micronesia, Aru of Indonesia, Sulu Sea, northeastern Borneo, Republic of Marshall Islands, Wanan of Taiwan, and the central Ryukyu and Yaeyama of Japan. This study is the first to investigate and report the source nesting populations of a relatively large number of foraging green turtles in the region. The genetic results also indicate possible use of coastal Guangdong, the Taiwan Strait, and the East China Sea as habitat by pelagic-phase green turtles hatched from nesting beaches in Taiwan and mainland China. As a precautionary approach for effective sea turtle conservation, conservation and management of each distinct green turtle source rookery as well as foraging aggregations sourced from multiple natal origins in the South China Region is needed to preserve genetic diversity for the species. Anthropogenic threats to nesting and foraging habitats and migratory pathways, such as direct take for trade and fishery impacts, should be thoroughly assessed and effectively mitigated by regional collaboration to sustain these populations.
机译：海龟在全球范围内濒临灭绝，面临着人为威胁，例如直接收获，兼捕和栖息地退化。遗传学研究有助于确定巢穴和觅食场之间的连通性，以进行保护和管理。但是，有关华南地区（包括香港，广东省和台湾）的绿海龟（Chelonia mydas）的遗传种群组成的信息非常有限。在这项研究中，基于760 bp的绿海龟线粒体DNA（mtDNA）控制区（n = 110）进行的混合种群分析显示，太平洋地区导致觅食华南绿海龟聚集体的主要来源群是半岛马来西亚，密克罗尼西亚联邦的Yap，印度尼西亚的Aru，苏禄海，婆罗洲的东北部，马绍尔群岛共和国，台湾的万安以及日本的琉球中部和八重山。这项研究是第一个调查和报告该地区相对大量觅食绿海龟的源巢种群的研究。遗传结果还表明，从台湾和中国大陆的巢滩孵化的浮游相绿海龟可能将广东沿海，台湾海峡和东海作为栖息地。作为有效保护海龟的预防措施，需要保护和管理每个独特的绿海龟源群，以及从华南地区多个出生地获得的觅食聚集体，以保护该物种的遗传多样性。应该通过区域合作以维持这些人口的方式，彻底评估和有效减轻对筑巢和觅食生境和迁徙途径的人为威胁，例如直接采取贸易和渔业影响。

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  • 来源
    《Chelonian conservation and biology》 |2017年第2期|139-150|共12页
  • 作者

    Ng Connie Ka Yan; Dutton Peter H.; Gu He Xiang; Li Tsung Hsien; Ye Ming Bin; Xia Zhong Rong; Zhang Fei Yan; Duan Jin Xia; Hsu Chung Kang; Balazs George H.; Murphy Margaret B.;

  • 作者单位

    City Univ Hong Kong, Dept Biol & Chem, Kowloon, Hong Kong, Peoples R China|City Univ Hong Kong, State Key Lab Marine Pollut, Kowloon, Hong Kong, Peoples R China;

    NOAA, Southwest Fisheries Sci Ctr, Natl Marine Fisheries Serv, 8901 La Jolla Shores Dr, La Jolla, CA 92037 USA;

    Guangdong Huidong Sea Turtle Natl Nat Reserve Bur, China Sea Turtle Base, Huidong Cty 516359, Guangdong, Peoples R China;

    Natl Museum Marine Biol & Aquarium, Pingtung 94450, Taiwan;

    Guangdong Huidong Sea Turtle Natl Nat Reserve Bur, China Sea Turtle Base, Huidong Cty 516359, Guangdong, Peoples R China;

    Guangdong Huidong Sea Turtle Natl Nat Reserve Bur, China Sea Turtle Base, Huidong Cty 516359, Guangdong, Peoples R China;

    Guangdong Huidong Sea Turtle Natl Nat Reserve Bur, China Sea Turtle Base, Huidong Cty 516359, Guangdong, Peoples R China;

    Guangdong Huidong Sea Turtle Natl Nat Reserve Bur, China Sea Turtle Base, Huidong Cty 516359, Guangdong, Peoples R China;

    Fisheries Res Inst, Penghu Marine Biol Res Ctr, Magong 266, Penghu, Taiwan;

    NOAA, Pacific Islands Fisheries Sci Ctr, 1845 Wasp Blvd, Honolulu, HI 96818 USA;

    City Univ Hong Kong, Dept Biol & Chem, Kowloon, Hong Kong, Peoples R China|City Univ Hong Kong, State Key Lab Marine Pollut, Kowloon, Hong Kong, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    genetics; mixed stock analysis; connectivity; conservation; green turtle; China;

    机译：遗传;混合种群分析;关联性;保护;绿海龟;中国;

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