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Temporal changes in activity budgets of chick-rearing Adélie penguins
Yoda, K.; Ropert-Coudert, Y. (2007). Temporal changes in activity budgets of chick-rearing Adélie penguins. Mar. Biol. (Berl.) 151(5): 1951-1957. hdl.handle.net/10.1007/s00227-007-0631-2
In: Marine Biology. Springer: Heidelberg; Berlin. ISSN 0025-3162, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Yoda, K.
  • Ropert-Coudert, Y.

Abstract
    Changes in sea-ice conditions can affect locomotion on land, diving behavior, and corresponding foraging success of penguins. In this study, locomotion on land and diving behavior were compared between early and late stages of the guard phase with different sea-ice conditions using miniaturized time-depth-acceleration data loggers for Adélie penguins Pygoscelis adeliae from 18 December 2001 to 11 January 2002 in Dumont d’Urville, Adélie Land (66.7°S, 140.0°E), Antarctica. Differences were found between early and late stages in the ratio of walking vs. tobogganing, proportion of time spent diving, diving depth as well as in the rate of parental tissue accumulation. In contrast, trip duration, distance traveled on land, and meal delivery rate to chicks did not differ between the stages. This study suggests that physical changes in sea-ice during the penguins’ chick-rearing period may affect certain on-land and/or at-sea behaviors which, in turn, may affect how resources are allocated to self-maintenance or chick-provisioning.

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