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Distribution and diving behaviour of harp seals (Pagophilus groenlandicus) from the Greenland Sea stock

机译:格陵兰海种群竖琴海豹(Pagophilus groenlandicus)的分布和潜水行为

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The distribution and diving behaviour of 16 adult harp seals (Pagophilus groenlandicus) from the Greenland Sea stock were studied in 1993 and 1999, using satellite-linked dive recorders (SDRs). The seals remained near the pack-ice edge in the Greenland Sea between breeding and moulting (April/May 1993; 6F) and during the first 7 weeks after moulting (June/July, 1999; 4F, 6M), there diving to depths of <100 m. In mid-July 1999, seven out of eight seals with active SDRs migrated into the Barents Sea, there diving to <400 m and sharing feeding grounds with the Barents Sea harp seal stock. Between September and December, six of these seals joined the eighth seal in the Denmark Strait until March 2000, there diving to depths of 100-400 m. Overall, dives were significantly deeper in the day and in winter than at night and in summer, with some regional differences. Harp seals are considered pack-ice-associated seals, but our tagged seals spent a considerable proportion of their time in open water, their distribution largely overlapping with that of capelin (Mallotus villosus). [References: 47]
机译:1993年和1999年使用卫星链接潜水记录仪(SDR)研究了格陵兰海种群16种成年竖琴海豹(Pagophilus groenlandicus)的分布和潜水行为。在繁殖和换羽之间(1993年4月/ 5月; 6F)以及换羽后的最初7周内(1999年6月/ 7月; 4F,6M),海豹仍留在格陵兰海的pack冰边缘附近。 <100 m。 1999年7月中旬,活跃的特别提款权的八个海豹中有七个迁徙到了巴伦支海,在那里潜水到<400 m,并与巴伦支海竖琴海豹种群共享了觅食地。在9月和12月之间,其中6个海豹在丹麦海峡加入了第八个海豹,直到2000年3月,在那里潜水到100-400 m的深度。总体而言,白天和冬季的潜水深度要明显大于夜间和夏季的潜水深度,并且存在一些地区差异。竖琴海豹被认为是与冰袋相关的海豹,但是我们标记的海豹在开阔的水域中花费了相当长的时间,它们的分布与毛鳞鱼(Mallotus villosus)在很大程度上重叠。 [参考:47]

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