Greg Hofmeyr G J, Bester Marthán N, Kirkman Steve P, Lydersen Christian, Kovacs Kit M
Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa.
Mar Pollut Bull. 2006 Sep;52(9):1077-80. doi: 10.1016/j.marpolbul.2006.05.003. Epub 2006 May 13.
Entanglements of Antarctic fur seals Arctocephalus gazella were recorded during four summers from 1996 to 2002 at the subantarctic island, Bouvetøya. Rates of entanglement varied between 0.024% and 0.059%. These rates are low for a pinniped population and might be because of the geographic isolation of the haulout site. An apparent decrease in the levels of entanglement over the course of the study was likely due, at least in part, to the removal of entanglements by observers. At least two-thirds of entangling materials were generated by fishery sources. Since there is no known local source of anthropogenic marine pollution, seals become entangled either in waters distant from the island, or when materials drift into local waters. Significantly more subadults were found entangled than expected from the postulated population age class distribution.
1996年至2002年的四个夏天，在亚南极的布韦岛记录了南极毛皮海狮（Arctocephalus gazella）被缠住的情况。缠住率在0.024%至0.059%之间变化。对于鳍足类动物种群来说，这些比率较低，可能是由于上岸地点的地理隔离。在研究过程中，缠住水平明显下降，这至少部分可能是由于观察员清除了缠住物。至少三分之二的缠住材料来自渔业来源。由于没有已知的当地人为海洋污染源，海豹要么在远离该岛的水域被缠住，要么在材料漂入当地水域时被缠住。发现被缠住的亚成体明显多于根据假定的种群年龄分布预期的数量。
