(Table 1) Egg laying and hatching dates and guarding duration of Adélie penguins (Pygoscelis adeliae) on Petrel Island, Antarctica ...

1. In Polar Regions, the extent and dynamics of sea-ice are changing. This affects the ocean productivity which consecutively impacts plankton communities and polar top predators like penguins. Yet, the underlying behavioural and physiological mechanisms remain poorly understood.2. Here we monitored...

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Bibliographic Details
Main Authors: Beaulieu, Michaël, Dervaux, Antoine, Thierry, Anne-Mathilde, Lazin, David, Le Maho, Yvon, Ropert-Coudert, Yan, Spée, Marion, Raclot, Thierry, Ancel, André
Format: Dataset
Language:English
Published: PANGAEA 2010
Subjects:
Interval comments
Sex
Sample amount
Duration, number of days
Standard deviation
Pygoscelis adeliae, egg laying date
Pygoscelis adeliae, hatching date
Biology
Observed
International Polar Year 2007-2008 IPY
Adelie penguin
Antarc*
Antarctica
International Polar Year
IPY
Petrel Island
Pygoscelis adeliae
Sea ice
Online Access:https://dx.doi.org/10.1594/pangaea.807225
https://doi.pangaea.de/10.1594/PANGAEA.807225
Description
Summary:1. In Polar Regions, the extent and dynamics of sea-ice are changing. This affects the ocean productivity which consecutively impacts plankton communities and polar top predators like penguins. Yet, the underlying behavioural and physiological mechanisms remain poorly understood.2. Here we monitored the ecophysiological responses of Adelie penguin (Pygoscelis adeliae) pairs during two seasons of contrasting timing of sea-ice retreat. Beside classical breeding parameters like foraging trip duration, body mass and reproductive success, we also investigated food-related stress (via plasma corticosterone concentration), nutritional state (via metabolite levels) and the use of penguins' habitat (via blood isotopic values). 3. Body mass and reproductive success remained unchanged but foraging trips were shorter when sea-ice retreated earlier. Constant plasma corticosterone concentrations indicated that none of the feeding conditions resulted in a food-related stress. However metabolite levels were lower when ... : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...

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