期刊
MARINE MAMMAL SCIENCE
卷 16, 期 2, 页码 375-391出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1748-7692.2000.tb00931.x
关键词
blue whale; Balaenoptera musculus; satellite telemetry; radio-tracking; dive behavior
Dive habits of four Northeast Pacific blue whales (Balaenoptera musculus) were studied using satellite-monitored radio tags. Tags summarized dive-duration data into eight 3-h periods daily. One tag additionally summarized dive depth and time-at-depth information for these same periods. Tracking periods ranged from 0.6 to 12.7 d and provided data for 17 three-hour summary periods, representing 2,007 dives (788 of which provided depth information). Total number of dives during a 3-h summary period ranged from 83 to 128. Seventy-two percent of dives were less than or equal to 1 min long. All whales spent >94% of their time submerged. Average duration of true dives (dives >1 min) ranged from 4.2 to 7.2 min. Seventy-five percent of depth-monitored dives were to less than or equal to 16 m, accounting for 78% of that animal's time. Average depth of dives to >16 m was 105 +/- 13 m.
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