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Study on global migration of green turtles in the ASEAN waters

东盟海域绿海龟全球迁徙研究

基本信息

批准号：
13375008
负责人：
ARAI Nobuaki
金额：
$ 15.81万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

项目摘要

The objectives were as follows.1. To clarify migratory paths of adult female green turtles in the Gulf of Thailand and the Andaman Sea, using satellite tracking system.2. Monitoring of sand temperature using temperature recording data loggers in the nesting ground to estimate sex ratio of new-hatched individuals.3. Genetic analyses of the local population structures of the sea turtle.4. Correlation between fishing effort of trawling and the number of sea turtle by-catch. 5. Development of a scientific strategy for the conservation.In the first step, the project emphasized on research of migratory paths both in the Gulf of Thailand and the Andaman Sea, Thailand using the Argos system. The sea turtle migratory paths were demonstrated in the Internet (http://bse.soc.i.kyoto-u.ac.jp/seastar2000/). Both in 2002 and 2003 we deployed 12 platform transmitter terminals (PTTs) to track female green turtles at the Gulf of Thailand and the Andaman Sea in Thailand and also at the south Gulf of Thailand in Malaysia. The results clarified migratory paths of adult female green turtles after their nesting ; in the Gulf of Thailand they migrated to various sea areas sometimes even beyond Thai waters including the South China Sea, and in the Andaman Sea almost all the turtles migrated to the Andaman Islands within Indian territorial waters via different routes. In addition to the tracking study, we analyzed DNA of green turtles to clarify the difference between the stock in the Gulf of Thailand and that in the Andaman Sea. The results indicated there was no difference between them.In order to discuss conservation of sea turtles in the ASEAN countries, we held the international workshop on SEASTAR2000 every year during the project in Thailand and published the proceedings.

目标如下：1.利用卫星追踪系统，了解成年雌性绿海龟在泰国湾和安达曼海的迁徙路线。利用巢地温度记录仪监测沙温，估计新孵化个体的性比。海龟地方种群结构的遗传分析。拖网捕捞努力量与海龟副渔获量的关系。5.制定科学的养护战略。在第一步，该项目重点研究泰国湾和泰国安达曼海的迁徙路径，使用Argos系统。在互联网(http://bse.soc.i.kyoto-u.ac.jp/seastar2000/).中演示了海龟的迁徙路径2002年和2003年，我们在泰国湾和泰国安达曼海以及马来西亚泰国湾南部部署了12个平台发射机终端(PTT)来追踪雌性绿海龟。这些结果明确了成年雌性绿海龟产卵后的迁徙路径；在泰国湾，它们迁徙到各种海域，有时甚至超出泰国水域，包括南中国海；在安达曼海，几乎所有的海龟都是通过不同的路线迁徙到印度领海内的安达曼群岛。除了追踪研究，我们还分析了绿海龟的DNA，以澄清泰国湾和安达曼海的种群之间的差异。为了讨论东盟国家对海龟的保护，我们每年在泰国项目期间举办关于SEASTAR2000的国际研讨会，并发表会议记录。