Prolonged, continuous, deep diving by northern elephant seals
Prolonged, continuous, deep diving by northern elephant seals
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北象海豹长时间、持续、深潜
DOI：
10.1139/z89-355
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发表时间：
1989
影响因子：
1.4
通讯作者：
Tomohiro Asaga
中科院分区：
文献类型：
--
作者：
B. L. Boeuf;Y. Naito;A. Huntley;Tomohiro Asaga
早期的一项研究表明，雌性北方象海豹(Mironga Angustirostris)在哺乳后的头1-3周内连续深入海上潜水。我们报告说，这种潜水模式在整个两个半月的海上期间都保持不变。在加利福尼亚州阿诺新沃的六名成年女性身上安装了时间深度记录器；在海上连续记录三台仪器，每隔三天记录一次。平均下潜速度为每小时2.5~3.3次潜水，两次潜水之间水面平均下潜时间为~lt； 3.5 min。这导致女性83%-90%的时间在海上水下。连续潜水的中断是罕见的，特征是水面间隔延长，平均为51.9 ± 65.5 min，仅有0.42%的潜水。每名女性的模式潜水持续时间在17.1-22.5min之间。最长的下潜时间为62 分钟，随后的水面间隔时间为<； 2.6 分钟。每个女性的模式潜水深度在500-700 m之间；3个女性的潜水深度超过1000 m，最深的
An earlier study showed that female northern elephant seals (Mirounga angustirostris) dive deeply and continuously during the first 1–3 weeks at sea following lactation. We report that this dive pattern is maintained for the entire 2½-month period at sea. Time–depth recorders were attached to six adult females at Ano Nuevo, California; three instruments recorded continuously and three instruments recorded every 3rd day at sea. The mean dive rate was 2.5–3.3 dives per hour, with a mean of < 3.5 min on the surface between dives. This resulted in females spending 83–90% of the time at sea underwater. Interruption of continuous diving, characterized by extended surface intervals with a mean of 51.9 ± 65.5 min, was rare, following only 0.42% of the dives. Modal dive duration per female was in the range 17.1–22.5 min. The longest dive was 62 min and was followed by a surface interval of < 2.6 min. Modal dive depth per female was in the range 500–700 m; three females had dives that exceeded 1000 m, with the deep...
影响因子：
9.8
作者：
Kendig,JJ;Grossman,Y;MacIver,MB
通讯作者：
MacIver,MB