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The commercially important Shoemaker spinefoot, Siganus sutor connects coral reefs to neighbouring seagrass meadows
Journal of Fish Biology ( IF 1.7 ) Pub Date : 2020-03-05 , DOI: 10.1111/jfb.14297
Ameer Ebrahim 1, 2 , Jude P Bijoux 2 , Peter J Mumby 1 , Ian R Tibbetts 1
Affiliation  

Spatial management of fish populations can potentially be optimised by determining the area of influence of a particular species. We performed an acoustic tagging study implemented on Denis Island in the Seychelles to assess the area of influence of the heavily targeted shoemaker spinefoot, Siganus sutor. We investigated whether this species acts as a mobile link between coral patches and seagrass meadows, and whether their movements differed between day and night. The study incorporated an array of twenty-two acoustic stations deployed within dense coral patches, seagrass meadows and mixed habitats of both seagrass and coral. Fifteen S. sutor carrying internal acoustic tags, were monitored from November 2016 until May 2017. Detection patterns revealed them to be diurnal herbivores, with only rare nocturnal movements. Home-range estimates showed that individuals differed in their spatial range extents and habitats used, covering ~15% of the total shallow subtidal coastline of the island. However, they displayed very small daily movements (< 200 m), concentrated mainly around sites within mixed coral and seagrass habitats. Optimal number of detections were recorded when the coral to seagrass area ratio was approximately 1.6: 1. This ratio was confirmed through statistical prediction modelling. Identification of such links of commercially important species between networked habitats may help authorities consider incorporating seagrass meadows of the Seychelles into management discussions, that are currently lacking. This article is protected by copyright. All rights reserved.

中文翻译:

具有重要商业价值的 Shoemaker Spinefoot Siganus sutor 将珊瑚礁与邻近的海草草地连接起来

通过确定特定物种的影响区域,可以优化鱼类种群的空间管理。我们在塞舌尔的丹尼斯岛进行了一项声学标记研究,以评估针对性很强的鞋匠 Spinefoot Siganus sutor 的影响区域。我们调查了该物种是否充当珊瑚斑块和海草草地之间的移动链接,以及它们的运动在白天和黑夜之间是否不同。该研究将 22 个声学站部署在密集的珊瑚斑块、海草草地以及海草和珊瑚的混合栖息地中。从 2016 年 11 月到 2017 年 5 月,对 15 只携带内部声学标签的 S. sutor 进行了监测。检测模式显示它们是昼夜食草动物,只有罕见的夜间活动。家庭范围估计表明,个体的空间范围范围和使用的栖息地不同,覆盖了岛屿总浅潮下海岸线的 15%。然而,它们显示出非常小的日常运动(< 200 m),主要集中在混合珊瑚和海草栖息地内的地点周围。当珊瑚与海草的面积比约为 1.6:1 时,记录了最佳检测次数。该比例通过统计预测模型得到证实。确定联网栖息地之间具有商业重要性的物种之间的这种联系可能有助于当局考虑将塞舌尔的海草草甸纳入目前缺乏的管理讨论中。本文受版权保护。版权所有。覆盖该岛总浅潮下海岸线的约 15%。然而,它们显示出非常小的日常运动(< 200 m),主要集中在混合珊瑚和海草栖息地内的地点周围。当珊瑚与海草的面积比约为 1.6:1 时,记录了最佳检测次数。该比例通过统计预测模型得到证实。确定联网栖息地之间具有商业重要性的物种之间的这种联系可能有助于当局考虑将塞舌尔的海草草甸纳入目前缺乏的管理讨论中。本文受版权保护。版权所有。覆盖该岛总浅潮下海岸线的约 15%。然而,它们显示出非常小的日常运动(< 200 m),主要集中在混合珊瑚和海草栖息地内的地点周围。当珊瑚与海草的面积比约为 1.6:1 时,记录了最佳检测次数。该比例通过统计预测模型得到证实。确定联网栖息地之间具有商业重要性的物种之间的这种联系可能有助于当局考虑将塞舌尔的海草草甸纳入目前缺乏的管理讨论中。本文受版权保护。版权所有。主要集中在混合珊瑚和海草栖息地内的地点。当珊瑚与海草的面积比约为 1.6:1 时,记录了最佳检测次数。该比例通过统计预测模型得到证实。确定联网栖息地之间具有商业重要性的物种之间的这种联系可能有助于当局考虑将塞舌尔的海草草甸纳入目前缺乏的管理讨论中。本文受版权保护。版权所有。主要集中在混合珊瑚和海草栖息地内的地点。当珊瑚与海草的面积比约为 1.6:1 时,记录了最佳检测次数。通过统计预测模型证实了这一比例。确定联网栖息地之间具有商业重要性的物种之间的这种联系可能有助于当局考虑将塞舌尔的海草草甸纳入目前缺乏的管理讨论中。本文受版权保护。版权所有。确定联网栖息地之间具有商业重要性的物种之间的这种联系可能有助于当局考虑将塞舌尔的海草草甸纳入目前缺乏的管理讨论中。本文受版权保护。版权所有。确定联网栖息地之间具有商业重要性的物种之间的这种联系可能有助于当局考虑将塞舌尔的海草草甸纳入目前缺乏的管理讨论中。本文受版权保护。版权所有。
更新日期:2020-03-05
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