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首页> 外文期刊>Marine biology >Long-term residency and movements of yellowmouth barracuda (Sphyraena viridensis) at a shallow seamount
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Long-term residency and movements of yellowmouth barracuda (Sphyraena viridensis) at a shallow seamount

机译：黄嘴梭子鱼在浅海山上的长期居住和迁徙

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摘要

The yellowmouth barracuda Sphyraena viridensis, a highly mobile predator, is considered a migratory seasonal visitor to the Azores Islands by local fishers. This perception is challenged here through a combined analysis of multi-annual commercial landings, underwater visual census and telemetry data from acoustically tagged fish to investigate the long-term movement patterns and residency (up to 4 years) in a seamount marine reserve. Although the landing patterns suggested a strong seasonal variation in abundance, the visual census and the telemetry experiment results were consistent with year-round residency in the Azores. Barracudas occurred consistently in underwater census throughout the year, and most tagged fish were almost continuously detected at the seamounts for up to four consecutive years. Detection probability did, however, decrease over time and showed seasonal variability as tagged fish were less mobile with longer absences during summer and fall. Given the intrinsic vulnerability of fish aggregations to exploitation, our results highlight the need to protect shallow seamount habitats and preserve sexually mature fish aggregations and their reproductive potential, contributing to the sustainable management and conservation of these vulnerable ecosystems.
机译：黄嘴梭鱼Sphyraena viridensis是一种高度活动的捕食者，被当地渔民视为亚速尔群岛的季节性迁徙游客。通过对多年商业着陆，水下目视普查和来自带有声学标签的鱼的遥测数据进行综合分析，以调查海山海洋保护区的长期运动模式和居住时间（长达4年），挑战了这种感知。尽管着陆模式表明丰度有很大的季节性变化，但视觉普查和遥测实验结果与在亚速尔群岛全年居住的情况是一致的。梭子鱼一年四季都在水下普查中持续发生，大多数带标签的鱼几乎连续连续四年在海山上被连续发现。然而，随着夏季和秋季，带标签的鱼活动性降低，缺粮时间更长，因此检测概率确实会随着时间的推移而降低，并显示出季节性变化。考虑到鱼聚集体对开发的固有脆弱性，我们的结果强调了保护浅海山栖息地和保护具有性成熟性的鱼聚集体及其繁殖潜力的必要性，这有助于这些脆弱生态系统的可持续管理和保护。

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  • 来源
    《Marine biology》 |2017年第1期|19.1-19.10|共10页
  • 作者

    Fontes Jorge; Afonso Pedro;

  • 作者单位

    Univ Azores, MARE Marine & Environm Sci Ctr, Dept Oceanog & Fisheries, Rua Prof Dr Frederico Machado, Horta, Azores, Portugal|Univ Azores, Ctr IMAR, Dept Oceanog & Fisheries, Horta, Azores, Portugal;

    Univ Azores, MARE Marine & Environm Sci Ctr, Dept Oceanog & Fisheries, Rua Prof Dr Frederico Machado, Horta, Azores, Portugal|Univ Azores, Ctr IMAR, Dept Oceanog & Fisheries, Horta, Azores, Portugal;

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