Sperm whale diving behavior monitored using a suction-cup-attached TDR tag
Sperm whale diving behavior monitored using a suction-cup-attached TDR tag
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DOI：
10.3354/meps258291
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发表时间：
2003-01-01
影响因子：
2.5
通讯作者：
Yoshioka, M
中科院分区：
文献类型：
--
作者：
Amano, M;Yoshioka, M
利用吸盘式TDR（time depth recorder）标签对日本熊野熊野沿岸一条中等体型雌性抹香鲸的潜水行为进行了研究。标签仍然附着在鲸鱼62小时，并记录了74次潜水深度超过100米。鲸鱼反复潜水30至45分钟下降到400-1200米。除了每天下午在水面停留1.3至4.2小时外，潜水之间的水面间隔一般为10分钟。鲸鱼在潜水的底部花费了很长一段时间，在此期间，深度和速度数据都有相当大的变化，偶尔会出现速度爆发。这些数据表明，抹香鲸在觅食时使用积极的搜索和追求策略。假设所有在海底活动的潜水时间都是为了觅食，这头鲸鱼大约80%的时间都花在觅食潜水上。偶尔观察到深度活动很少的潜水，这可能是为了休息。虽然潜水参数与北方长须鲸相似，但潜水剖面似乎不同，这表明这2种深潜鲸类采用不同的觅食策略。
The diving behavior of a medium-sized female sperm whale off the Kumano Coast, Japan, was studied using a suction-cup-attached TDR (time depth recorder) tag. The tag remained attached to the whale for 62 h and recorded 74 dives deeper than 100 m. The whale repeatedly dived for 30 to 45 nun down to 400-1200 m. Surface intervals were generally 10 min between dives, except for a period of 1.3 to 4.2 h spent at the surface every afternoon. The whale spent long periods of time at the bottom of dives, during which there was considerable variability in both depth and velocity data, with occasional bursts in velocity. These data suggest that sperm whales use an active search-and-pursue strategy while foraging. Assuming all dives with active bottom time were for foraging, this whale spent about 80% of its total time in foraging dives. Dives with little activity at depth were occasionally observed, which were probably for resting. Although dive parameters resemble those of northern bottlenose whales, dive profiles seem to be different, suggesting that these 2 deep diving cetaceans employ different foraging strategies.