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首页> 外文期刊>ICES Journal of Marine Science >Migration, residency, and homing of bluefin tuna in the western Mediterranean Sea
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Migration, residency, and homing of bluefin tuna in the western Mediterranean Sea

机译：蓝鳍金枪鱼在地中海西部的迁徙，居住和归巢

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摘要

This study presents the results of an electronic tagging programme on mature Atlantic bluefin tuna (ABFT) that has been conducted since 2007 offshore of the French Mediterranean Coast. The spatial distributions of ABFT showed little year-to-year variation and the fish concentrated in a small area of the central northwestern Mediterranean, where they may stay for several months. The individual tracks display sinuous trajectories in this area, indicating the possibility of feeding behaviour. No fish went out to the North Atlantic, but several fish displayed some migration to the southern western Mediterranean Sea during winter and the central Mediterranean during the spawning season. The homing behaviour of one fish after a full year as well as the back and forth of several fish further indicates that this restricted feeding area is probably persistent from year to year. We hypothesize that this area could result from local enrichment due to permanent mesoscale oceanographic features related to the North Mediterranean Current and the North Balearic front. The option of a spatial management, through marine protected areas, for a highly migratory species, such as ABFT, thus deserves more careful consideration because those species displayed complex spatial dynamics (e.g. homing), and population structure (e.g. several subpopulations of different sizes).
机译：这项研究介绍了自2007年以来在法国地中海沿岸进行的成熟大西洋蓝鳍金枪鱼（ABFT）电子标签计划的结果。 ABFT的空间分布没有逐年变化，鱼集中在地中海西北部中部的一个小区域，可能会停留几个月。各个轨道在该区域显示曲折的轨迹，表明有进食行为的可能性。没有鱼流到北大西洋，但是在冬季，有几条鱼向南部地中海南部迁移，在产卵季节向地中海中部迁移。整整一年后一条鱼的归巢行为以及几条鱼的来回传播进一步表明，这种受限制的摄食区可能每年都持续存在。我们假设该区域可能是由于与北地中海洋流和北巴利阿里锋有关的永久中尺度海洋学特征而引起的局部富集。因此，通过海洋保护区对高度迁徙的物种（如ABFT）进行空间管理的选择值得更仔细地考虑，因为这些物种表现出复杂的空间动态（例如归巢）和种群结构（例如几个不同大小的亚种群） 。

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