Study on the reproductive ecology of the endangered loggerhead sea turtle on the Shikoku coast

四国海岸濒危红海龟繁殖生态学研究

• 批准号: 24810018
• 负责人: SAITO TOMOMI
• 金额: $ 1.25万
• 依托单位: Kochi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Research Activity Start-up
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-08-31 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24810018/
• 关键词: 保全生物; 絶滅危惧種; 繁殖生態; 資源管理; 海洋生態

The nesting of loggerhead turtle was observed forty eight times on the coast near Niyodo River mouth, Tosa Bay, from the middle of May to the end of July in 2013 and showed the maximum frequency among the entire nesting sites of Kochi prefecture during 2013. Of the location of survey that covered 3.4 km, an area that stretched 0.9 km near the east of the river mouth featured such suitable factors of environment for nesting and indicated the utmost nesting success rate of 92.6 %.Six turtles were caught off Tosa Bay from the middle of November in 2013 to the end of January in 2014. Those were identified as three females and three males by the sex hormone density. Among them one female and one male were matured but the rest were determined to be immature. From here onwards, it was revealed that Tosa Bay would allow adult and sub-adult turtles to migrate even in winter seasons and would be one of the important water-zones for reproduction of loggerhead turtles.

2013年5月中旬至7月下旬，在土佐湾Niyodo河口附近的海岸观测到了48次赤海龟的筑巢，2013年期间在高知县的整个筑巢地点中显示出最高频率。在3.4公里的调查地点中，河口以东0.9公里的区域具有适宜筑巢的环境因素，筑巢成功率最高为92.6%。2013年11月中旬至2014年1月底，土佐湾海域捕获了6只海龟。根据性激素浓度确定为3名女性和3名男性。其中一只雌性和一只雄性已经成熟，但其余的被确定为未成熟。从这里开始，土佐湾即使在冬季也允许成年和亚成年海龟迁移，并将成为红海龟繁殖的重要水域之一。

项目成果

仁淀川河口海岸の環境特性とアカウミガメの産卵生態

仁淀川河口沿岸环境特征及红海龟产卵生态

• 发表时间: 2014
• 作者: A FLEURENCE;Y. YODHIDA;C.-C. LEE;T. OZAKI;JAIST;Y. HASEGAWA;Y. YAMADA-TAKAMURA;和田真央子,斉藤知己
• 通讯作者: 和田真央子,斉藤知己

土佐湾仁淀川河口海岸におけるアカウミガメの産卵生態および産卵巣冠水の可能性について

土佐湾仁淀川河口沿岸红蠵龟的产卵生态及筑巢卵巢被淹的可能性

• 发表时间: 2013
• 作者: A FLEURENCE;Y. YODHIDA;C.-C. LEE;T. OZAKI;JAIST;Y. HASEGAWA;Y. YAMADA-TAKAMURA;和田真央子,斉藤知己;和田真央子,斉藤知己,熊澤佳範;和田真央子，斉藤知己，熊澤佳範
• 通讯作者: 和田真央子，斉藤知己，熊澤佳範

土佐湾仁淀川河口海岸におけるアカウミガメの産卵生態および産卵巣冠水の危険性について

关于土佐湾仁淀川河口沿岸红蠵龟的产卵生态及产卵卵巢泛滥的风险

• 发表时间: 2013
• 作者: A FLEURENCE;Y. YODHIDA;C.-C. LEE;T. OZAKI;JAIST;Y. HASEGAWA;Y. YAMADA-TAKAMURA;和田真央子,斉藤知己;和田真央子,斉藤知己,熊澤佳範
• 通讯作者: 和田真央子,斉藤知己,熊澤佳範