Birds of Indian Subcontinent

Daily Variations of Serum Glucose Levels in Moulting Redpolls Acanthis flammea and in Migrating Robins Erithacus rubecula

Publication Type:Journal Article
Year of Publication:1974
Authors:Frelin, C
Journal:Ornis Scandinavica
Date Published:1974
ISBN Number:00305693
Keywords:Acanthis, Acanthis flammea, Carduelis flammea, Erithacus, Erithacus rubecula, Fringillidae, Muscicapidae
Abstract:Serum glucose determinations were performed at the same time of year on moulting sedentary Redpolls Acanthis flammea and migrating Robins Erithacus rubecula. The serum glucose level in Redpolls is maintained around 3.3 g/l throughout the postjuvenal moult with little diurnal variation. In Robins, the serum glucose level after one night of migration remains constant at 3.4 g/l until noon, and then increases in the afternoon up to 4.10 g/l. The low glucose levels of the morning are recovered whether Robins are migrating or not. The physiological significance of these results is tentatively discussed.
Short Title:Ornis Scandinavica
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