...
首页> 外文期刊>Marine biology >Spatial and social connectivity of fish-eating 'Resident' killer whales (Orcinus orca) in the northern North Pacific
【24h】

Spatial and social connectivity of fish-eating 'Resident' killer whales (Orcinus orca) in the northern North Pacific

机译:北太平洋北部以鱼类为食的“常驻”虎鲸(Orcinus orca)的空间和社会联系

获取原文
获取原文并翻译 | 示例
           

摘要

The productive North Pacific waters of the Gulf of Alaska, Aleutian Islands and Bering Sea support a high density of fish-eating "Resident" type killer whales (Orcinus orca), which overlap in distribution with commercial fisheries, producing both direct and indirect interactions. To provide a spatial context for these interactions, we analyzed a 10-year dataset of 3,058 whale photo-identifications from 331 encounters within a large (linear ~4,000 km) coastal study area to investigate the ranging and social patterns of 532 individually identifiable whales photographed in more than one encounter. Although capable of large-scale movements (maximum 1,443 km), we documented ranges generally <200 km, with high site fidelity across summer sampling intervals and also re-sightings during a winter survey. Bayesian analysis of pair-wise associations identified four defined clusters, likely representing groupings of stable matrilines, with distinct ranging patterns, that combined to form a large network of associated whales that ranged across most of the study area. This provides evidence of structure within the Alaska stock of Resident killer whales, important for evaluating ecosystem and fisheries impacts. This network included whales known to depredate groundfish from longline fisheries, and we suggest that such large-scale connectivity has facilitated the spread of depredation.
机译:阿拉斯加湾,阿留申群岛和白令海的北太平洋高产水域支持高密度的以鱼类为食的“常驻”型虎鲸(Orcinus orca),其分布与商业渔业重叠,从而产生直接和间接的相互作用。为了为这些相互作用提供空间背景,我们分析了一个大型(线性〜4,000 km)沿海研究区域中的331次相遇的10年数据集,共3,058条鲸鱼的照片,以调查拍摄的532条可单独识别的鲸鱼的范围和社会模式在不止一次的相遇中。尽管能够进行大规模运动(最大1,443公里),但我们记录的范围通常小于200公里,在夏季采样间隔内具有较高的现场保真度,并且在冬季调查期间也可以重新观测。贝叶斯对成对关联的分析确定了四个定义的簇,它们可能代表具有不同测距模式的稳定母体的组合,这些簇组合在一起形成了一个分布在整个研究区域中的大型鲸鱼网络。这提供了阿拉斯加常驻虎鲸种群内结构的证据,这对评估生态系统和渔业影响至关重要。该网络包括已知会延绳钓渔业淘汰底栖鱼类的鲸鱼,我们建议这种大规模的连通性促进了掠夺行为的传播。

著录项

  • 来源
    《Marine biology》 |2014年第2期|459-472|共14页
  • 作者单位

    National Marine Mammal Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, 7600 Sand Point Way NE, Seattle, WA 98115, USA,School of Biology, University of Aberdeen, Lighthouse Field Station, George Street, Cromarty, Ross-shire IV11 8YJ, Scotland, UK;

    National Marine Mammal Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, 7600 Sand Point Way NE, Seattle, WA 98115, USA,Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 8901 La Jolla Shores Drive, La Jolla, CA 92037, USA;

    Center for Whale Research, 355 Smugglers Cove Road, Friday Harbor, WA 98250, USA;

    National Marine Mammal Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, 7600 Sand Point Way NE, Seattle, WA 98115, USA;

    North Gulf Oceanic Society, 3430 Main Street, Suite B1, Homer, AK 99603, USA;

    Auke Bay Laboratories, Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, 17109 Pt Lena Loop Rd., Juneau, AK 99801, USA;

    School of Fisheries and Ocean Sciences, University of Alaska Fairbanks, 17101 Pt Lena Loop Rd., Juneau, AK 99801, USA;

    Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 8901 La Jolla Shores Drive, La Jolla, CA 92037, USA;

    National Marine Mammal Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, 7600 Sand Point Way NE, Seattle, WA 98115, USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号