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首页> 外文期刊>Polar biology >Demography and ecology of southern right whales Eubalaena australis wintering at sub-Antarctic Campbell Island, New Zealand
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Demography and ecology of southern right whales Eubalaena australis wintering at sub-Antarctic Campbell Island, New Zealand

机译：新西兰次南极坎贝尔岛越冬的南方右鲸Eubalaena australis的人口学和生态学

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摘要

Since the decimation of the southern right whale Eubalaena australis population in New Zealand by whaling, research on its recovery has focused on the wintering ground at the Auckland Islands, neglecting potentially important wintering habitat at Campbell Island. For the first time in 20 years we conducted an expedition to sub-Antarctic Campbell Island to document and describe E. australis occupying this wintering habitat. We used a variety of methods including photo-identification, genetic and stable isotope analyses of tissue samples, and visual surveys of abundance and distribution, to provide details on the demography, population connectivity and ecology of E. australis wintering at Campbell Island. Our primary findings include (1) a lack of calves observed at Campbell Island, (2) an age-class bias toward sub-adults encountered at Campbell Island, (3) nine photo-identification matches between individuals observed at Campbell Island and previously documented elsewhere in New Zealand, (4) no genetic differentiation between E. australis at Campbell Island and the broader New Zealand population, (5) increased abundance estimates of E. australis at Campbell Island over the last 20 years, and (6) indications that E. australis forage within the sub-Antarctic region based on stable isotope analyses. Our results confirm that the Auckland Islands are currently the only significant calving area for E. australis in New Zealand, and therefore previous abundance estimates based on demographic data from the Auckland Islands are applicable to the entire New Zealand population of E. australis. However, future periodic surveys to Campbell Island are recommended to monitor population recovery and expansion.
机译：自从对新西兰南部露脊鲸Eubalaena australis种群进行大规模捕鲸之后，对其恢复的研究就集中在奥克兰群岛的越冬地上，而忽略了坎贝尔岛的潜在重要越冬栖息地。我们20年来第一次进行了一次南极坎贝尔岛探险，记录并描述了这个越冬栖息地中的南方大肠杆菌。我们使用了多种方法，包括光识别，组织样品的遗传和稳定同位素分析，以及丰度和分布的视觉调查，以详细介绍坎贝尔岛越冬的人口统计学，种群连通性和生态。我们的主要发现包括（1）在坎贝尔岛（Campbell Island）观察到的犊牛不足；（2）对坎贝尔岛（Campbell Island）遇到的亚成年人的年龄偏见；（3）在坎贝尔岛（Campbell Island）观察到的，以前有文献记载的个人之间有九次照片识别比赛（4）在坎贝尔岛（Campbell Island）的澳大利亚大肠埃希菌与更广泛的新西兰人口之间没有遗传分化；（5）在过去20年中，坎贝尔岛（Campbell Island）的澳大利亚大肠埃希菌（E. australis）丰度估计值提高了；（6）迹象表明根据稳定的同位素分析，南极洲内的澳大利亚E. australis觅食。我们的结果证实，奥克兰群岛是新西兰目前唯一的重要产犊区，因此先前基于奥克兰群岛人口统计数据得出的丰度估计值适用于整个新西兰种群。但是，建议将来对坎贝尔岛进行定期调查，以监测人口的恢复和扩张。

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  • 来源
    《Polar biology》 |2017年第1期|95-106|共12页
  • 作者

    Torres Leigh G.; Rayment Will; Olavarria Carlos; Thompson David R.; Graham Brittany; Baker C. Scott; Patenaude Nathalie; Bury Sarah Jane; Boren Laura; Parker Graham; Carroll Emma L.;

  • 作者单位

    Oregon State Univ, Marine Mammal Inst, 2030 Southeast Marine Sci Dr, Newport, OR 97365 USA|Oregon State Univ, Dept Fisheries & Wildlife, Hatfield Marine Sci Ctr, 2030 Southeast Marine Sci Dr, Newport, OR 97365 USA;

    Univ Otago, Dept Marine Sci, POB 56, Dunedin, New Zealand;

    POB 422, Nelson 7040, New Zealand;

    Natl Inst Water & Atmospher Res Ltd, 301 Evans Bay Parade, Wellington 6021, New Zealand;

    Natl Inst Water & Atmospher Res Ltd, 301 Evans Bay Parade, Wellington 6021, New Zealand;

    Oregon State Univ, Marine Mammal Inst, 2030 Southeast Marine Sci Dr, Newport, OR 97365 USA|Oregon State Univ, Dept Fisheries & Wildlife, Hatfield Marine Sci Ctr, 2030 Southeast Marine Sci Dr, Newport, OR 97365 USA;

    Coll Int St Anne, Lachine, PQ, Canada;

    Natl Inst Water & Atmospher Res Ltd, 301 Evans Bay Parade, Wellington 6021, New Zealand;

    New Zealand Dept Conservat, Wellington, New Zealand;

    Parker Conservat, 126 Maryhill Terrace, Dunedin 9010, New Zealand;

    Univ St Andrews, Scottish Oceans Inst, Sch Biol, St Andrews, Fife, Scotland;

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  • 正文语种 eng
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  • 关键词

    Age-class; Genetic analysis; Population connectivity; Stable isotope; Sub-Antarctic; Wintering ground; Parentage analysis;

    机译：年龄分类;遗传分析;人口连通性;稳定同位素;南极洲;冬地;亲缘关系分析;

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