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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Ontogeny of the dispersal migration of green turtle (Chelonia mydas) hatchlings
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Ontogeny of the dispersal migration of green turtle (Chelonia mydas) hatchlings

机译：绿龟（Chelonia mydas）幼体的散布迁移的个体发育

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摘要

The purpose of this study was to determine the ontogenic change in offshore dispersal movement of sea turtles from the shore during frenzy to the post-frenzy periods. Migration and wave orientation behaviors that affect the dispersal of green turtles (Chelonia mydas) from the shore were investigated at 1,7, and 28-56 days of age. The effect of ocean currents on dispersal migration was also measured. Our results indicate that migration velocity decreased as turtles aged. Wave orientation behavior was not significantly different between growth stages, but the directional preferences of individuals toward waves tended to decrease with age, producing winding migration trajectories in the older age groups. Ocean currents affect dispersal migrations of turtles in all age groups, although no significant differences among growth stages were observed. These results indicate a significant decrease in migration distance between turtles in the 1-day and 28-56-day-old age groups; additionally, ocean currents influenced the slower-swimming 28-56-day-old turtles for longer periods of time. These observations suggest that turtles reared for some period of time have a decreased probability of experiencing the same migration route as wild frenzied hatchlings. Thus, sea turtle hatchlings should be released as soon as possible to increase their survival and facilitate natural migration.
机译：这项研究的目的是确定海龟从狂潮到狂潮后从岸上的离岸扩散运动的本体变化。研究了在1,7和28-56日龄时影响海岸绿海龟（Chelonia mydas）扩散的迁移和波浪定向行为。还测量了洋流对分散迁移的影响。我们的结果表明，随着乌龟年龄的增长，迁移速度下降。在成长阶段之间，波浪的定向行为没有显着差异，但是个体对波浪的定向偏好会随着年龄的增长而降低，从而在较老的年龄组中产生蜿蜒的迁移轨迹。洋流影响所有年龄组的海龟分散迁移，尽管未观察到生长期之间的显着差异。这些结果表明，在1日龄和28-56日龄的年龄组中，海龟之间的迁徙距离显着减少。此外，洋流在更长的时间内影响着游泳较慢的28-56日龄的海龟。这些观察结果表明，在一段时间内饲养的海龟经历与野生疯狂幼体相同迁移路线的可能性降低。因此，应尽快释放海龟幼体，以增加其存活率并促进自然迁徙。

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    Junichi Okuyama; Osamu Abe; Hideaki Nishizawa; Masato Kobayashi; Kenzo Yoseda; Nobuaki Arai;

  • 作者单位

    Graduate School of Informatics, Kyoto University, Yoshida Honmachi, Sakyo, Kyoto 606-8501, Japan;

    Ishigaki Tropical Station, Seikai National Fisheries Research Institute, Fisheries Research Agency, Fukaiohta 148-446, Ishigaki, Okinawa 907-0451, Japan Marine Fishery Resources Development and Management Department, Southeast Asian Fisheries Development Center, Taman Perikanan,Chendering 21080 Kuala Terengganu, Malaysia;

    Graduate School of Informatics, Kyoto University, Yoshida Honmachi, Sakyo, Kyoto 606-8501, Japan;

    Yaeyama Station of the Stock Enhancement Technology Development Center, Seikai National Fisheries Research Institute, Fisheries Research Agency, Fukaiohta 148, Ishigaki,Okinawa 907-0451, Japan;

    Ishigaki Tropical Station, Seikai National Fisheries Research Institute, Fisheries Research Agency, Fukaiohta 148-446, Ishigaki, Okinawa 907-0451, Japan;

    Yaeyama Station of the Stock Enhancement Technology Development Center, Seikai National Fisheries Research Institute, Fisheries Research Agency, Fukaiohta 148, Ishigaki,Okinawa 907-0451, Japan;

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  • 正文语种 eng
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  • 关键词

    current drift; frenzy; release program; sea turtles; wave orientation;

    机译：电流漂移疯狂发布程序;海龟波向;

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