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Investigating foraging utilization distribution of female New Zealand sea lions, Auckland Islands

机译:调查奥克兰群岛的雌性新西兰海狮的觅食利用分布

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Detrimental interactions between marine mammals and fisheries are increasing worldwide. The ability to manage these interactions requires the knowledge of where and how interactions occur and the effects they have on species. Many pinnipeds are central place foraging colonial breeders who are restricted in foraging range during breeding. Here, we use a utilization distribution approach to examine the foraging habitats of lactating New Zealand (NZ) sea lions (Phocarctos hookeri) from Dundas and Enderby Islands, Auckland Islands. Annually, the NZ sea lions which breed on these two islands produce 83% of this Nationally Critical species' pups. Satellite transmitters were attached to 55 females during 2001-2007. Data showed that NZ sea lions utilize the entire Auckland Island shelf with partial habitat partitioning between females from the two breeding islands. This habitat partitioning results in differing degrees of overlap with fisheries and therefore possible differing fishery-related impacts on breeding areas.
机译:世界范围内,海洋哺乳动物和渔业之间的有害相互作用正在增加。管理这些相互作用的能力需要了解相互作用在哪里和如何发生以及它们对物种的影响。许多pin鱼是觅食殖民地繁殖者的中心地带,繁殖期间繁殖范围受到限制。在这里,我们使用一种利用分布的方法来调查来自邓达斯和奥克兰群岛恩德比群岛的哺乳期新西兰(NZ)海狮(Phocarctos hookeri)的觅食栖息地。每年,在这两个岛上繁殖的NZ海狮产自该国家重要物种的幼崽的83%。在2001年至2007年期间,卫星发射器连接到55名女性。数据显示,新西兰海狮利用整个奥克兰岛的架子,在两个繁殖岛上的雌性之间进行部分栖息地分区。这种栖息地的划分导致与渔业的重叠程度不同,因此,与渔业有关的对繁殖区的影响可能不同。

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