The yellowfin tuna (Thunnus albacares) is a widely distributed, migratory species that supports valuable commercial fisheries throughout their range. Management of migratory species requires knowledge of movement, mixing and key life history parameters such as growth rate, natural and fisheries mortality. Current management is based on the assumptions that the species is highly migratory and populations are well mixed, but these assumptions have been questioned by recent studies. Since November 2015, yellowfin tuna have been tagged with conventional, archival and pop-up satellite tags (PSAT) in the South Atlantic Ocean around St Helena, with the goal of better understanding their movement patterns and ecology in this region. Conventional tags were attached to 4049 yellowfin tuna (size range 24–158 cm fork length, FL), PSAT tags were deployed on 15 yellowfin in inshore St Helena waters (size range 95–138 cm FL) and 7 yellowfin (size range 125–140 cm FL) at Cardno Seamount, and archival tags were deployed on 48 yellowfin tuna in inshore St Helena waters (size range 69–111 cm FL). Most yellowfin tuna remained within 70 km of their release location, suggesting a degree of retention to the region. Although displacement of yellowfin was generally low, the furthest distance travelled between release and recapture location was 2755 km, with other tuna also displaying large-scale movements. Tagging revealed connections between inshore regions and seamounts, as well as links between St Helena waters and key fishing regions and putative spawning grounds in the Gulf of Guinea.

黄鳍金枪鱼（Thunnus albacares）是一种分布广泛的迁徙物种，在其整个范围内为有价值的商业渔业提供支持。迁移物种的管理需要了解运动，混合和重要的生命史参数，例如生长速度，自然和渔业死亡率。当前的管理基于该物种高度迁徙和种群混合良好的假设，但是这些假设受到了最近研究的质疑。自2015年11月以来，黄鳍金枪鱼已在圣海伦娜附近的南大西洋上贴有常规，存档和弹出式卫星标签（PSAT），以期更好地了解其在该地区的活动方式和生态。常规标签贴在4049个黄鳍金枪鱼上（大小范围，叉长24–158 cm，佛罗里达州），PSAT标签被部署在Cardno Seamount的圣赫勒拿岛近海水域15个黄鳍鱼（大小范围为95–138 cm）和7个黄鳍（大小范围为125–140 cm FL）中，档案标签被部署于圣赫勒拿岛沿海的48个黄鳍金枪鱼中水域（尺寸范围FL 69-111厘米）。大多数黄鳍金枪鱼保持在其释放位置的70公里以内，表明对该区域有一定程度的保留。尽管黄鳍金枪鱼的位移通常较小，但释放和重新捕获地点之间的最远距离为2755 km，其他金枪鱼也显示出大规模运动。标签显示了近海区域与海山之间的联系，以及圣赫勒拿水域与几内亚湾关键渔区和推定产卵场之间的联系。在圣赫勒拿岛近海水域（尺寸范围69–111 cm FL）中的48个黄鳍金枪鱼上部署了存档标签。大多数黄鳍金枪鱼保持在其释放位置的70公里以内，表明对该区域有一定程度的保留。尽管黄鳍金枪鱼的位移通常较小，但释放和重新捕获地点之间的最远距离为2755 km，其他金枪鱼也显示出大规模运动。标签显示了近海区域与海山之间的联系，以及圣赫勒拿水域与几内亚湾关键渔区和推定产卵场之间的联系。在圣赫勒拿岛近海水域（尺寸范围69–111 cm FL）中的48个黄鳍金枪鱼上部署了存档标签。大多数黄鳍金枪鱼保持在其释放位置的70公里以内，表明对该区域有一定程度的保留。尽管黄鳍金枪鱼的位移通常较小，但释放和重新捕获地点之间的最远距离为2755 km，其他金枪鱼也显示出大规模运动。标签显示了近海区域与海山之间的联系，以及圣赫勒拿水域与几内亚湾关键渔区和推定产卵场之间的联系。尽管黄鳍金枪鱼的位移通常较小，但释放和捕获之间的最远距离为2755 km，其他金枪鱼也显示出大规模运动。标签显示了近海区域与海山之间的联系，以及圣赫勒拿水域与几内亚湾关键渔区和推定产卵场之间的联系。尽管黄鳍金枪鱼的位移通常较小，但释放和重新捕获地点之间的最远距离为2755 km，其他金枪鱼也显示出大规模运动。标签显示了近海区域与海山之间的联系，以及圣赫勒拿水域与几内亚湾关键渔区和推定产卵场之间的联系。