International Movements of Adult Female Hawksbill Turtles (Eretmochelys imbricata): First Results from the Caribbean's Marine Turtle Tagging Centre

International Movements of Adult Female Hawksbill Turtles (Eretmochelys imbricata): First Results from the Caribbean's Marine Turtle Tagging Centre
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成年雌性玳瑁海龟 (Eretmochelys imbricata) 的国际运动:来自加勒比海海龟标签中心的初步结果

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发表时间:
2011
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通讯作者:
K. Eckert
K. Eckert
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作者:
J. Horrocks;Barry H. Krueger;M. Fastigi;Emile L. Pemberton;K. Eckert

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有效管理迁徙海龟需要分布国之间的知情和持续合作。设在巴巴多斯西印度群岛大学的大加勒比海龟养护网络区域海龟标记中心的主要目标是鼓励和促成这种合作,将原本孤立的海龟标记方案联合起来,从在一个国家标记而在另一个国家捕获、发现或搁浅的海龟的地理范围信息中获益。我们提出的第一个摘要的信息收集从国际标签返回的成年女性玳瑁海龟(Eretmochelys imbricata)标有海龟标记中心标签。2002年1月至2009年6月期间,19个国家和海外领土的21个海龟项目收到了海龟标记中心的Inconel 1005-681标签,其中12个项目报告标记了成年雌性玳瑁,总共标记了2261只。其中63只(2.8%)在被标记后至少在另一个国家出现过一次,已向海龟标记中心报告;其中大多数(96.8%)最初是在巴巴多斯筑巢时被标记的。根据最小直线行进距离,捕获点距离筑巢海滩的平均标准误差(SE)为343.9 ± 69.7 km(中位数为175 km)。标记和首次重新捕获之间的平均天数为835 ± 67.9天(SE),中位数为860天。虽然大多数返回的海龟来自标记地点几百公里以内,但标记的动物往往经过多个专属经济区,并受到相互冲突的管理制度的影响,其中包括法律的和非法的海龟捕捞。尼加拉瓜和洪都拉斯沿海的浅海大陆架被确认为东加勒比海玳瑁的觅食地。
Abstract Effective management of migratory sea turtles requires informed and sustained collaboration among range states. The primary objective of the Wider Caribbean Sea Turtle Conservation Network's regional Marine Turtle Tagging Centre at the University of the West Indies, Barbados, has been to encourage and enable such collaboration, uniting otherwise isolated sea turtle tagging programs to benefit from information on the geographic range of sea turtles tagged in one country and captured, sighted, or stranded in another country. We present the first summary of information gleaned from international tag returns of adult female hawksbill sea turtles (Eretmochelys imbricata) marked with Marine Turtle Tagging Centre tags. Twenty-one sea turtle projects in 19 countries and overseas territories received Inconel 1005–681 tags from the Marine Turtle Tagging Centre between January 2002 and June 2009, and 12 of these projects have reported tagging adult female hawksbills, for a combined total of 2261 tagged individuals. Sixty-three of these individuals (2.8%), sighted at least once in another country since being tagged, have been reported to the Marine Turtle Tagging Centre; the majority of them (96.8%) were originally tagged while they were nesting in Barbados. Based on minimum straight-line distance traveled, the point of capture averaged 343.9 ± 69.7 km standard error (SE), (median 175 km) from the nesting beach. The average number of days between tagging and the first recapture was 835 ± 67.9 days SE, median 860 days). Although the majority of returns came from within a few hundred kilometers of the tagging site, tagged animals often passed through multiple exclusive economic zones and were exposed to conflicting management regimes, which include legal and illegal sea turtle fisheries. The shallow continental shelf off the coasts of Nicaragua and Honduras was confirmed as a foraging ground for Eastern Caribbean hawksbills.