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首页> 外文期刊>Marine ecology progress series >Spatial variation in directional swimming enables juvenile sea turtles to reach and remain in productive waters
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Spatial variation in directional swimming enables juvenile sea turtles to reach and remain in productive waters

机译：定向游泳的空间变化使幼年海龟可以到达并留在生产水中

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摘要

Ocean currents play an important role in the movement and distribution of organisms and for small animals it is often assumed that their movements in the ocean are determined by passive drift. Here we challenge this assumption by conducting an experiment at the scale of an entire ocean basin to test whether small (similar to 35 cm) juvenile loggerhead sea turtles Caretta caretta move independently of ocean currents. By comparing the trajectories of 46 satellite tracked turtles (11502 positions, 12850 tracking days) with Lagrangian drifters (3716303 positions, 927529 tracking days) and virtual particles tracked within the Hybrid Coordinate Ocean Model (HYCOM), we found that in certain areas turtles moved in a similar manner to ocean currents, but in other areas turtle movement was markedly different from ocean currents, with turtles moving to areas thousands of kilometres from where they would have drifted passively. We further found that turtles were distributed in more-productive areas than would be expected if their movement depended on passive transport only. These findings demonstrate that regional variation in directional swimming contributes to young sea turtles reaching more favourable developmental habitats and supports laboratory work suggesting that young turtles have a map sense to determine their location in a seemingly featureless ocean.
机译：洋流在生物的运动和分布中起着重要作用，对于小型动物，通常认为它们在海洋中的运动是由被动漂移决定的。在这里，我们通过在整个海盆的规模上进行实验来测试这种小（约35厘米）幼小海龟海龟Caretta caretta是否独立于洋流而运动，从而挑战了这一假设。通过比较46颗卫星追踪海龟的轨迹（11502位置，12850个追踪日）与拉格朗日漂流者（3716303位置，927529追踪日）和在混合坐标海洋模型（HYCOM）中跟踪的虚拟粒子，我们发现海龟在某些区域移动乌龟的移动方式与洋流类似，但是在其他地区，海龟的移动与洋流明显不同，海龟移动到它们会被动漂移数千公里的区域。我们还发现，如果乌龟的活动仅取决于被动运输，它们的分布范围将比预期的要多。这些发现表明定向游泳的区域变化有助于海龟到达更有利的发育栖息地，并支持实验室工作，表明海龟具有地图感，可以确定它们在看似毫无特征的海洋中的位置。

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  • 来源
    《Marine ecology progress series》 |2016年第28期|247-259|共13页
  • 作者

    Christiansen F.; Putman N. F.; Farman R.; Parker D. M.; Rice M. R.; Polovina J. J.; Balazs G. H.; Hays G. C.;

  • 作者单位

    Deakin Univ, Sch Life & Environm Sci, Geelong Ctr Integrat Ecol, Warrnambool Campus, Geelong, Vic 3280, Australia|Murdoch Univ, Sch Vet & Life Sci, Cetacean Res Unit, Murdoch, WA 6150, Australia;

    Univ Miami, Cooperat Inst Marine & Atmospher Studies, Rosenstiel Sch Marine & Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA|Natl Ocean & Atmospher Adm, Atlantic Oceanog & Meteorol Lab, 4301 Rickenbacker Causeway, Miami, FL 33149 USA;

    Aquarium Lagons, BP 8185, Noumea 98807, New Caledonia;

    Univ Hawaii, Joint Inst Marine & Atmospher Res, 2032 SE Oregon State Univ Dr, Newport, OR 97365 USA;

    Hawaii Preparatory Acad, 65-1692 Kohala Mt Rd, Kamuela, HI 96743 USA;

    NOAA, Pacific Islands Fisheries Sci Ctr, Natl Marine Fisheries Serv, 2570 Dole St, Honolulu, HI 96822 USA;

    NOAA, Pacific Islands Fisheries Sci Ctr, Natl Marine Fisheries Serv, 2570 Dole St, Honolulu, HI 96822 USA;

    Deakin Univ, Sch Life & Environm Sci, Geelong Ctr Integrat Ecol, Warrnambool Campus, Geelong, Vic 3280, Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Animal tracking; Caretta caretta; HYCOM; Lagrangian drifters; Movement ecology; Ocean currents;

    机译：动物跟踪;Car鱼;HYCOM;拉格朗日漂流器;运动生态学;洋流;

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