Current transport of leatherback sea turtles (Dermochelys coriacea) in the ocean
Current transport of leatherback sea turtles (Dermochelys coriacea) in the ocean
复制标题
棱皮海龟 (Dermochelys coriacea) 在海洋中的运输现状
DOI：
--
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
F. Papi
中科院分区：
文献类型：
--
作者：
P. Luschi;Alessandro Sale;R. Mencacci;G. Hughes;J. Lutjeharms;F. Papi
虽然由于卫星遥测技术，人们逐渐了解远洋脊椎动物的远距离移动，但几乎没有对决定其路线的因素进行调查。我们分析了海洋因素对三个卫星跟踪棱皮龟（Dermochelys coriacea）在西南印度洋筑巢后的运动的影响。通过将海龟的足迹叠加在海面温度和海平面高度异常的同期图像上，我们发现，与海流相关的特征主导了重建路线的形状。在最初的离岸运动之后，海龟在水流的核心部分沿着沿着直线运动，或者在漩涡中绕圈运动。大部分的路线与在同一地区追踪的地表漂流者的路线惊人地相似。这些发现证明，海龟的长期海洋运动可能是由洋流形成的。
While the long-distance movements of pelagic vertebrates are becoming known thanks to satellite telemetry, the factors determining their courses have hardly been investigated. We have analysed the effects of oceanographic factors on the post-nesting movements of three satellite-tracked leatherback turtles (Dermochelys coriacea) moving in the southwest Indian Ocean. By superimposing the turtle tracks on contemporaneous images of sea-surface temperatures and sea height anomalies, we show that currentrelated features dominate the shape of the reconstructed routes. After an initial offshore movement, turtles moved along straight routes when in the core of the current, or executed loops within eddies. Large parts of the routes were strikingly similar to those of surface drifters tracked in the same region. These findings document that long-lasting oceanic movements of marine turtles may be shaped by oceanic currents.