High basal metabolic rates of shorebirds while in the Arctic: a circumpolar view

Lindström, Ake and Klaassen, Marcel 2003, High basal metabolic rates of shorebirds while in the Arctic: a circumpolar view, Condor, vol. 105, no. 3, pp. 420-427, doi: 10.1650/7222.

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Title High basal metabolic rates of shorebirds while in the Arctic: a circumpolar view
Author(s) Lindström, Ake
Klaassen, MarcelORCID iD for Klaassen, Marcel orcid.org/0000-0003-3907-9599
Journal name Condor
Volume number 105
Issue number 3
Start page 420
End page 427
Total pages 8
Publisher BioOne
Place of publication Amsterdam, The Netherlands
Publication date 2003-08
ISSN 0010-5422
Keyword(s) BMR
Canada
Indirect calorimetry
Migration
Physiological adaptation
Science & Technology
Life Sciences & Biomedicine
Ornithology
Zoology
MIGRATORY GARDEN WARBLER
ENERGY-EXPENDITURE
AUTUMN MIGRATION
AVIAN ENERGETICS
CALIDRIS-CANUTUS
SYLVIA BORIN
FUEL STORES
WADERS
MASS
NONPASSERINES
Summary The basal metabolic rate (BMR) of Old World long-distance-migrant shorebirds has been found to vary along their migration route. On average, BMR is highest in the Arctic at the start of fall migration, intermediate at temperate latitudes, and lowest on the tropical wintering grounds. As a test of the generality of this pattern, we measured the BMR of one adult and 44 juvenile shorebirds of 10 species (1-18 individuals of each species, body-mass range 19-94 g) during the first part of their southward migration in the Canadian Arctic (68-76°N). The interspecific relationship between BMR and body mass was almost identical to that found for juvenile shorebirds in the Eurasian Arctic (5 species), although only one species appeared in both data sets. We conclude that high BMR of shorebirds in the Arctic is a circumpolar phenomenon. The most likely explanation is that the high BMR reflects physiological adaptations to low ambient temperatures. Whether the BMR of New World shorebirds drops during southward migration remains to be investigated.
Language eng
DOI 10.1650/7222
Field of Research 060603 Animal Physiology - Systems
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2003, Cooper Ornithological Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30076015

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