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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Investigating the movements and behaviour of Patagonian toothfish (Dissostichus eleginoides Smitt, 1898) around the Falkland Islands using satellite linked archival tags
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Investigating the movements and behaviour of Patagonian toothfish (Dissostichus eleginoides Smitt, 1898) around the Falkland Islands using satellite linked archival tags

机译：使用卫星链接存档标签调查巴塔哥尼亚牙鱼（Dissostichus eleginoides Smitt，1898）在福克兰群岛附近的运动和行为

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摘要

Knowledge of the seasonal movements of Patagonian toothfish is an essential component for understanding their ecology and fisheries management As only one demersal longline vessel participates in this fishery in Falkland's waters, over a vast slope area, the use of conventional tags to provide data on migration or stock assessment is not viable. In contrast, archival pop-up tags have enabled the examination of toothfish movements without having to recapture tagged individuals with reasonably high success rates. Patagonian toothfish (n = 30, > 127 cm L_T) were tagged with pop-up satellite tags between 19/09/2007 and 7/07/2010 in the South Atlantic close to the Falkland Islands. The data from 16 tags that successfully released and uploaded data (plus one recaptured fish) revealed strong site fidelity, with eleven toothfish moving less than 50 km from their release position over a 6 month period. Furthermore, depth data inferred three behavioural patterns showing seasonal bathymetric movements, foraging and spawning activities. Coinciding with the reported spawning months of July-August, spawning movements were recorded with fish moving repeatedly into shallower waters of 900-1200 m. Foraging behaviours were also evident with differences in the scale of foraging movement related to fish size, possibly linked to a shift in diet with size. Fish were found to move deeper during December and these are potentially post-spawning movements allowing the fish to take advantage of different prey availability.
机译：了解巴塔哥尼亚牙鱼的季节性运动是了解其生态和渔业管理的重要组成部分，因为在福克兰群岛水域中，只有一个沉没的延绳钓渔船在广阔的斜坡上参与该渔业，因此使用常规标签提供有关迁移或库存评估不可行。相反，档案弹出标签可以检查牙鱼的运动，而不必重新捕获具有相当高成功率的被标记个人。在2007年9月19日至2010年7月7日之间，在福克兰群岛附近的南大西洋，使用弹出式卫星标签对巴塔哥尼亚牙鱼（n = 30，L_T大于127 cm）进行标记。来自成功发布和上传数据的16个标签的数据（加上一条重新捕获的鱼）显示出强大的站点保真度，在六个月的时间内，有11条牙鱼从其发布位置移动不到50公里。此外，深度数据推断出三种行为模式，显示了季节性测深运动，觅食和产卵活动。与报告的7月至8月产卵月份相吻合，记录了产卵运动，鱼类反复移入900-1200 m的较浅水域。觅食行为也很明显，觅食运动的规模与鱼的大小有关，这可能与日粮大小的变化有关。人们发现鱼类在12月期间移动得更深，这些可能是产卵后的运动，使鱼类能够利用不同的猎物。

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    Judith Brown; Paul Brickie; Beth E. Scott;

  • 作者单位

    St. Helena Government, Essex House, Jamestown STHL 172, Saint Helena,University of Aberdeen, School of Biological Sciences (Zoology), Tillydrone Ave., Aberdeen AB24 2TZ, UK,Falkland Islands Fisheries Department, P.O. Box 598, Stanley FIQQ IZZ, Falkland Islands;

    South Atlantic Environment Research Institute, P.O. Box 609, Stanley FIQQ IZZ, Falkland Islands,University of Aberdeen, School of Biological Sciences (Zoology), Tillydrone Ave., Aberdeen AB24 2TZ, UK,Falkland Islands Fisheries Department, P.O. Box 598, Stanley FIQQ IZZ, Falkland Islands;

    University of Aberdeen, School of Biological Sciences (Zoology), Tillydrone Ave., Aberdeen AB24 2TZ, UK;

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  • 正文语种 eng
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  • 关键词

    Archival pop-up tags; Falkland Islands; Feeding behaviour; Patagonian toothfish; Spawning migration;

    机译：档案弹出标签;福克兰群岛;喂养行为;巴塔哥尼亚牙鱼;生成迁移;

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