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首页> 外文期刊>Chelonian conservation and biology >Factors Affecting the Long-Term Population Dynamics of Green Turtles (Chelonia mydas) in Ogasawara, Japan: Influence of Natural and Artificial Production of Hatchlings and Harvest Pressure
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Factors Affecting the Long-Term Population Dynamics of Green Turtles (Chelonia mydas) in Ogasawara, Japan: Influence of Natural and Artificial Production of Hatchlings and Harvest Pressure

机译：影响日本小gas原市绿海龟（Chelonia mydas）长期种群动态的因素：自然和人工生产雏鱼和收获压力的影响

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摘要

The Ogasawara Islands in Japan represent an important rookery for green sea turtles (Chelonia mydas) in the Pacific Ocean. The marine turtle population in these islands was severely depleted due to overexploitation in the 1800s; however, continuous nesting surveys starting in 1975 showed signs of a gradual recovery, and an upward trend of nesting females has been observed in recent years. The Japanese government undertook a "hatch and release project'' to recover the turtle stock in 1910 as the world's first attempt of a sea turtle hatchery. A total of more than 251,000 hatchlings were released into the wild as a part of the project; however, its contribution to the recent increase in nesting females is not well understood. The increase in nesting females may be attributed to the temporary suspension of the turtle harvest and reduction of catch from 1942 to 1968, which allowed for stable production of hatchlings from natural beaches. This study documents the levels of harvest, number of nesting females, and hatchling production at Ogasawara and explores, for the first time, their influence on population dynamics of Ogasawara's green turtles.
机译：日本的小gas原群岛代表着太平洋上绿海龟（Chelonia mydas）的重要种群。这些岛屿的海龟种群由于1800年代的过度开发而严重枯竭；但是，从1975年开始的连续筑巢调查显示出逐渐恢复的迹象，并且近年来观察到雌鸟筑巢的趋势呈上升趋势。日本政府于1910年进行了“孵化和释放项目”，以恢复海龟种群，这是世界上首次尝试进行海龟孵化的尝试，作为该项目的一部分，共向野外投放了251,000多只孵化器；然而， ，它对最近筑巢雌性数量增加的贡献尚不十分清楚，这可能归因于1942年至1968年海龟的暂时停产和捕捞量的减少，这使得从天然海滩孵化出的幼体得以稳定生产该研究记录了小gas原的收获水平，雌性筑巢数量和孵化量，并首次探讨了它们对小gas原绿海龟种群动态的影响。

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