Field metabolic rates of instrumented Adelie penguins using double-labelled water

Culik, Boris M. and Wilson, Rory P. (1992) Field metabolic rates of instrumented Adelie penguins using double-labelled water Journal of Comparative Physiology B - Biochemical Systemic and Environmental Physiology, 162 (6). pp. 567-573. DOI 10.1007/BF00264819.

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Adélie penguins (Pygoscelis adeliae) carrying dummy instruments were used to determine field metabolic rates using double-labelled water. All penguins injected with double-labelled water showed a marked loss of body mass (-4.5%) during the period of the experiments (20–131 h), irrespective of the time of the breeding season. Total body water averaged 57.3% and water flux estimates of field metabolic rates correlated with double-labelled water estimates of field metabolic rate (r2=0.68), indicating that Adélie penguins do not ingest significant amounts of sea water. Brooding Adélie penguins had a mean field metabolic rate of 10.1 W·kg-1 and at sea a field metabolic rate of 13.3 W·kg-1, both of which compare well with previously published estimates based on time/activity budgets and respirometry. Mean field metabolic rate in penguins with crèching chicks was 14.1 W·kg-1, and the birds spent 65 h absent from the nest as opposed to previous estimates of 7.1 W·kg-1 and 21 h. The effects of weather, disturbance and manipulation on the behaviour and field metabolic rate of penguins late in the breeding season are discussed. Adélie penguins (crèching chicks) equipped with externally attached instruments spent more time absent from the nest than noninstrumented controls (76 vs 54 h), but had a lower field metabolic rate.

Document Type: Article
Keywords: Double-labelled water; Water flux; Antarctica; Respirometry; Penguin, Pygoscelis adeliae
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-B Experimental Ecology - Benthic Ecology
OceanRep > Institute for Marine Science Kiel
Refereed: Yes
DOI etc.: 10.1007/BF00264819
ISSN: 0174-1578
Date Deposited: 01 Mar 2018 10:33
Last Modified: 07 Mar 2018 12:23

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