Diving in ringed seal (Phoca hispida) pups during the nursing period

摘要: In this study, activity and diving performance of nursing ringed seal (Phoca hispida) pups were quantified using time–depth recorders. A total 1040 h activity, including 7506 cycles, was collected from three female pups. The spent 50.3% their time in the water 49.7% hauled out on ice. When water, 20.5% actively diving, while 79.5% recorded wet at surface. Most dives shallow short duration. Mean dive duration 59.1 ± 63.5 s (SD). Maximum durations for 5.8, 7.5, 12 min. depths 12, 35, 89 m. These represented bottom area where each pup situated. average haul-out sessions could take place 6.3 ± 1.6 h, between these 8.2 ± 3.2 h. mean number breathing holes found per 8.7 ± 3.5. large proportion development of...