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北欧水域的雌性刺犬的季节性息地使用和垂直迁移

C Antonia Klöcker¹, Ole Thomas Albert¹, Keno Ferter¹

¹Havforskningsinstituttet (Institute of Marine Research, IMR), P.O. Box 1870, 5817, Nordnes, Bergen, Norway.

Movement ecology

|September 6, 2024

概括

雌性犬 (Squalus acanthias) 呈现季节性垂直迁移模式,冬季为寻找食物而进行垂直迁移 (DVM),夏季为温度调节而减少活动. 这项研究增强了对跑狗运动生态学的理解.

科学领域:

海洋生物学海洋生物学
动物生态动物生态学
渔业科学渔业科学

背景情况:

研究个体鱼类的息地使用和垂直运动是具有挑战性的,特别是对于小物种,如狗 (Squalus acanthias).
对犬的生物学和生物遥测研究,特别是在东北大西洋,是有限的.
马刺犬对渔业很重要,但它们的运动生态学仍未得到充分研究.

研究的目的:

为了研究雌性刺犬中微小的利基使用和垂直运动模式的季节性变化.
了解狗息地选择和运动行为的驱动因素.
为了提供数据来管理犬渔业.

主要方法:

在挪威的峡湾中,卫星标记了19只孕期雌性狗,长达365天.
核密度估计,以确定实现的利基空间.
连续波束和加速度分析,以识别 diel 垂直迁移 (DVM) 和活动模式.

主要成果:

怀孕的犬利用深度降至300米,温度为8-14°C.
观察到一致的二极垂直迁移 (DVM) 模式,在黎明时下降,在黄昏时上升,主要是在冬季和春季.
在夏季和秋季,鱼喜欢热带上方的温暖水域,活动爆发减少.

结论:

冬季的垂直迁移 (DVM) 可能是食驱动的,由增加的活动爆发表明.
夏季/秋季息地使用可能受到行为温度调节的影响,活动爆发较少.
马刺犬运动生态是复杂的,受到环境因素和个体变化的影响,为渔业管理提供了关键数据.

关键词:

档案标签档案标签生物测试是一种生物测试.在这里,DVM是DVM.快速启动可以开始.渔业渔业渔业渔业这些利基市场是一个利基.东北大西洋的东北地区在PSAT中,您可以使用PSAT.鱼是什么意思鱼是什么意思波形分析波形分析

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