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首页> 美国卫生研究院文献>other >The Use of Satellite Tags to Redefine Movement Patterns of Spiny Dogfish (Squalus acanthias) along the U.S. East Coast: Implications for Fisheries Management
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The Use of Satellite Tags to Redefine Movement Patterns of Spiny Dogfish (Squalus acanthias) along the U.S. East Coast: Implications for Fisheries Management

机译：利用卫星标签重新定义美国东海岸有刺Dog鱼（棘刺棘鱼）的运动方式：对渔业管理的影响

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Spiny dogfish (Squalus acanthias) are assumed to be a highly migratory species, making habitual north-south migrations throughout their northwestern Atlantic United States (U.S.) range. Also assumed to be a benthic species, spiny dogfish stock structure is estimated through Northeast Fisheries Science Center (NEFSC) bottom-trawl surveys. Recent anomalies in population trends, including a recent four-fold increase in estimated spawning stock biomass, suggest alternative movement patterns could exist for this shark species. To obtain a better understanding of the horizontal and vertical movement dynamics of this species, Microwave Telemetry pop-up satellite archival X-Tags were attached to forty adult spiny dogfish at the northern (Gulf of Maine) and southern (North Carolina) extents of their core U.S. geographic range. Reconstructed geolocation tracks ranging in lengths from two to 12 months suggest that the seasonal migration patterns appear to be local in nature to each respective northern and southern deployment site, differing from previously published migration paradigms. Differences in distance and direction traveled between seasonal geolocations possibly indicate separate migratory patterns between groups. Kernel utilization distribution models also suggest strong separate core home ranges. Significant differences in seasonal temperature and depths between the two regions further substantiate the possibility of separate regional movement patterns between the two groups. Vertical utilization also suggests distinct diel patterns and that this species may not utilize the benthos as previously thought, potentially decreasing availability to benthic gear.
机译：刺dog鱼（Squalus acanthias）被认为是高度迁徙的物种，在整个美国西北大西洋（美国）范围内都有惯性的南北向迁徙。通过东北渔业科学中心（NEFSC）底拖网调查，也可以估计多刺的fish鱼种群结构也被认为是底栖物种。最近种群趋势的异常，包括最近产卵生物量的估计增加了四倍，表明该鲨鱼物种可能存在其他运动方式。为了更好地了解该物种的水平和垂直运动动力学，将微波遥测弹出式卫星档案X-Tags固定在其北部（缅因州海湾）和南部（北卡罗来纳州）范围内的四十只成年多刺dog鱼上。美国核心地理范围。重构后的地理定位轨迹的长度在2到12个月不等，这表明季节性迁徙模式在自然界中似乎分别属于北部和南部各个部署地点，这与以前公布的迁徙范例不同。季节性地理位置之间行进的距离和方向的差异可能表明不同群体之间的迁移方式不同。内核利用率分布模型还建议使用强大的独立核心宿主范围。两个区域之间季节性温度和深度的显着差异进一步证实了两组之间区域运动模式分离的可能性。垂直利用还表明不同的diel模式，该物种可能不像以前认为的那样利用底栖动物，从而可能降低底栖渔具的可用性。

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