Larger barnacle geese ( Branta leucopsis ) are more efficient feeders:A possible mechanism for observed body size-fitness relationships

Geese have to satisfy the high energy demands of flight with a low-energy and bulky food. When feeding on food items that are concentrated and widespread, as is the case in geese. an individual's instantaneous intake rate is largely determined by its bite size. Inter-individual variation in bit...

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Bibliographic Details
Published in:Journal of Zoology
Main Authors: Cope, D.R., Loonen, M.J.J.E., Rowcliffe, J.M., Pettifor, R.A.
Format: Article in Journal/Newspaper
Language:English
Published: 2005
Subjects:
Branta leucopsis
barnacle geese
grazing
intake rate
morphology
foraging efficiency
scaling
peck rate
BASAL METABOLIC-RATE
ANSER-BRACHYRHYNCHUS
INDIVIDUAL VARIATION
FUNCTIONAL-RESPONSE
RELATIVE IMPORTANCE
GOOSE FLOCKS
SELECTION
POPULATION
HERBIVORE
Anser brachyrhynchus
Online Access:https://hdl.handle.net/11370/2868f374-2a26-47f8-8fbe-86b41a32f8e8
https://research.rug.nl/en/publications/2868f374-2a26-47f8-8fbe-86b41a32f8e8
https://doi.org/10.1017/S0952836904006028
Description
Summary:Geese have to satisfy the high energy demands of flight with a low-energy and bulky food. When feeding on food items that are concentrated and widespread, as is the case in geese. an individual's instantaneous intake rate is largely determined by its bite size. Inter-individual variation in bite size was measured in barnacle geese Brania leucopsis, with the hypotheses that bite size would scale with (sward height)(a), where 0

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