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首页> 外文期刊>Marine biology >Post-nesting migrations of loggerhead sea turtles in the Gulf of Mexico: dispersal in highly dynamic conditions
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Post-nesting migrations of loggerhead sea turtles in the Gulf of Mexico: dispersal in highly dynamic conditions

机译：墨西哥湾的logger海龟在巢后的迁移：在高度动态的条件下扩散

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This study is the first report of post-nesting migrations of loggerhead sea turtles (Caretta caretta) nesting in Sarasota County (Florida, USA), their most important rookery in the Gulf of Mexico (GOM). In total, 28 females (curved carapace length CCL between 82.2 and 112.0 cm) were satellite-tracked between May 2005 and December 2007. Post-nesting migrations were completed in 3-68 days (mean ± SD = 23 ± 16 days). Five different migration patterns were observed: six turtles remained in the vicinity of their nesting site while the other individuals moved either to the south-western part of the Florida Shelf (n = 9 turtles), the Northeast GOM (n = 2 turtles), the South GOM (Yucatan Shelf and Campeche Bay, Mexico, and Cuba; n = 5 turtles) or the Bahamas (n = 6 turtles). In average, turtles moved along rather straight routes over the continental shelf but showed more indirect paths in oceanic waters. Path analyses coupled with remote sensing oceanographic data suggest that most of long-distance migrants reached their intended foragingrndestinations but did not compensate for the deflecting action of ocean currents. While six out of seven small individuals (CCL < 90 cm) remained on the Florida Shelf, larger individuals showed various migration strategies, staying on the Florida Shelf or moving to long-distance foraging grounds. This study highlights the primary importance the Western Florida Shelf in the management of the Florida Nesting Subpopulation, as well as the need of multi-national effort to promote the conservation of the loggerhead turtle in the Western Atlantic.
机译：此项研究是在萨拉索塔县（美国佛罗里达州）筑巢的海龟（Caretta caretta）筑巢后的迁徙的第一份报告。萨拉索塔县是它们在墨西哥湾（GOM）最重要的繁殖地。在2005年5月至2007年12月之间，总共追踪了28只雌性（弯曲的背甲长度CCL在82.2至112.0 cm之间）。嵌套后的迁徙在3-68天（平均±SD = 23±16天）内完成。观察到五种不同的迁徙方式：六只海龟仍在其筑巢点附近，而其他个体则迁至佛罗里达州搁架的西南部（n = 9只海龟），东北GOM（n = 2只海龟），南部GOM（尤卡坦大陆架和坎佩切湾，墨西哥和古巴； n = 5只海龟）或巴哈马（n = 6只海龟）。平均而言，海龟在大陆架上沿相当笔直的路线移动，但在海洋水域中则显示出更多的间接路径。路径分析加上遥感海洋学数据表明，大多数长途移民达到了预定的觅食目的，但没有补偿洋流的偏转作用。在七个小个体（CCL <90厘米）中，有六个仍留在佛罗里达架子上，而较大的个体则表现出各种迁徙策略，要么停留在佛罗里达架子上，要么搬到远距离觅食的地方。这项研究强调了西佛罗里达架子在佛罗里达嵌套亚种群管理中的首要重要性，以及需要多国共同努力来促进西大西洋鱼保护的需要。

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  • 来源
    《Marine biology》 |2009年第9期|1827-1839|共13页
  • 作者

    Charlotte Girard; Anton D. Tucker; Beatriz Calmettes;

  • 作者单位

    Departement Ecologie, Physiologie et Ethologie, ULP, CNRS, IPHC, 23 rue Becquerel, 67087 Strasbourg, France Collecte Localisation Satellites, Direction Oceanographie Spatiale, 8-10 rue Hermes, 31520 Ramonville St Agne, France;

    Mote Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, FL 34236, USA;

    Collecte Localisation Satellites, Direction Oceanographie Spatiale, 8-10 rue Hermes, 31520 Ramonville St Agne, France;

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