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- W2058743886 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 380:287-294 (2009) - DOI: https://doi.org/10.3354/meps07806 Diving behavior and swimming style of nursing bearded seal pups Yuuki Watanabe1,2,*, Christian Lydersen3, Katsufumi Sato1, Yasuhiko Naito2, Nobuyuki Miyazaki4, Kit M. Kovacs3 1International Coastal Research Center, Ocean Research Institute, The University of Tokyo, 2-106-1 Akahama, Otsuchi, Iwate 028-1102, Japan 2National Institute of Polar Research, 1-9-10 Kaga, Itabashi, Tokyo 173-8515, Japan 3Norwegian Polar Institute, N-9296 Tromsø, Norway 4Ocean Research Institute, The University of Tokyo, 1-15-1 Minamidai, Nakano, Tokyo 164-8639, Japan *Email: watanabe.yuuki@nipr.ac.jp ABSTRACT: Seals are born on land or ice and must acquire the diving and swimming skills required to forage and avoid predators during their early lives. While diving behavior, including swim speed and swimming style (e.g. prolonged gliding and stroke-and-glide swimming), of adult seals is well documented, knowledge regarding the diving behavior of pups is still limited to records of dive depth and duration measured by simple time-depth recorders. In the present study, we attached multi-sensor data loggers to 6 bearded seal Erignathus barbatus pups weighing between 33 kg (newborn) and 104 kg (close to weaning). The mean swim speed and the mean distance covered by a stroke cycle was lowest (0.5 m s–1 and 0.3 m, respectively) in the smallest pup and highest (0.9 m s–1 and 0.6 m) in the largest pup. The largest pup showed substantial periods (17% of transit time) of prolonged gliding, as adult seals commonly do. However, the 3 medium-sized pups glided only during <5% of the transit time, and the 2 smallest pups did not glide. Stroke-and-glide swimming was not observed in any pups. The stroke cycle frequency of the smallest pup was highly variable, while that of the largest pup was relatively stable. These results suggest that the swimming performance of the pups developed during the short nursing period. KEY WORDS: Data logger · Release system · Accelerometer · Development · Spectrogram · Power spectral density · Bandwidth · Erignathus barbatus Full text in pdf format PreviousCite this article as: Watanabe Y, Lydersen C, Sato K, Naito Y, Miyazaki N, Kovacs KM (2009) Diving behavior and swimming style of nursing bearded seal pups. Mar Ecol Prog Ser 380:287-294. https://doi.org/10.3354/meps07806 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 380. Online publication date: April 07, 2009 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2009 Inter-Research." @default.
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