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Study on global migration of green turtles in the ASEAN waters

Research Project

Project/Area Number 13375008
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section海外学術
Research Field General fisheries
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

ARAI Nobuaki  ARAI,Nobuaki, 情報学研究科, 助教授 (20252497)

Co-Investigator(Kenkyū-buntansha) MITSUNAGA Yasushi  Kinki University, Agriculture, Instructor, 農学部, 助手 (90319658)
坂本 亘  京都大学, 農学研究科, 教授 (50013587)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥24,700,000 (Direct Cost: ¥19,000,000、Indirect Cost: ¥5,700,000)
Fiscal Year 2003: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2002: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Fiscal Year 2001: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Keywordssea turtles / Argos PTT / ASEAN / 混獲 / アルゴス発信機 / DNA分析 / アオウミガメ / タイ湾 / アンダマン海
Research Abstract

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.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Arai, N., et al.: "Development of new devices for marine biotelemetry"J.Adv.Mar.Sci.Tech.Soci. 8・1. 15-23 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 新井修亮: "ウミガメを追いかける"科学(岩波). 73・1. 48-52 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kittiwattanawong, K., et al.: "Tracking of green turtles Chelonia mydas in the Andaman Sea using platform transmitter terminals"Phuket Mar.Biol.Cent.Res.Bull.. 64. 81-87 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Arai, N., et al.: "Development of new devices for marine biotelemetry"J.Adv.Mar.Sci.Tech Soci.. 8-1. 15-23 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Arai, N.: "Tracking of sea turtles"KAGAKU. 73-1. 48-52 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kittiwattanawong K., et al.: "Tracking of green turtles Chelonia mydas in the Andaman Sea using platform transmitter terminals"Phuket Mar.Biol.Cent.Res.Bull.. 64. 81-87 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Arai, N.: "Proceedings of the 3rd Workshop on SEASTAR2000"134 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Arai, N., et al.: "Development of new devices for marine biotelmetry : preliminary results from visual data storage rags and magnetic field sensor accelerometers attached to adult sea turtle"J.Adv.Mar.Sci.Tech.Soci. 8(1). 15-23 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 荒井修亮: "ウミガメを追いかける"科学(岩波). 73(1). 48-52 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kittiwattanawong, K., et al.: "Tracking of green turtles Chelonia mydas in the Andaman Sea using platform transmitter terminals"Phuket Mar.Biol.Cent.res.Bull.. 64. 81-87 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] Kiyota, M. et al.: "Proceedings of the 3^<rd> Workshop on SEASTAR2000"Arai, N.eds.. 134 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 荒井修亮: "ウミガメを追いかける"岩波科学. 48-52 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] N.Arai et al.: "Proceedings of the SEASTAR2000 workshop"SEASTAR2000 secretary. 61 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] N.Arai et al.: "Proceedings of the 1st SEASTAR2000 Workshop"(2000)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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