Departure fuel loads in time-minimizing migrating birds can be explained by the energy costs of being heavy
Klaassen, Marcel and Lindström, Åke LU
(1996)
In Journal of Theoretical Biology
183(1).
p.29-34
- Abstract
- Lindström & Alerstam (1992Am. Nat.140,477–491) presented a model that predicts optimal departure fuel loads as a function of the rate of fuel deposition in time-minimizing migrants. The basis of the model is that the coverable distance per unit of fuel deposited, diminishes with increasing fuel load. This is an effect of the increasing flight costs associated with increasing body mass. Lindström & Alerstam (1992) found that birds left at lower fuel loads than their model predicted for which they considered various ecological explanations. Alternatively, we hypothesize that the difference between prediction and empirical data might be a result of extra resting metabolic and transport costs associated with an increase in fuel load... (More)
- Lindström & Alerstam (1992Am. Nat.140,477–491) presented a model that predicts optimal departure fuel loads as a function of the rate of fuel deposition in time-minimizing migrants. The basis of the model is that the coverable distance per unit of fuel deposited, diminishes with increasing fuel load. This is an effect of the increasing flight costs associated with increasing body mass. Lindström & Alerstam (1992) found that birds left at lower fuel loads than their model predicted for which they considered various ecological explanations. Alternatively, we hypothesize that the difference between prediction and empirical data might be a result of extra resting metabolic and transport costs associated with an increase in fuel load during stopover. We develop a new version of the Lindström & Alerstam (1992) model taking fuel load associated costs during stopover into account. We fit empirical data from rufous hummingbirdsSelasphorus rufus(Carpenteret al., 1983Proc. Natl. Acad. Sci. U.S.A.80,7259–7263) and bluethroatsLuscinia svecica(Lindström & Alerstam, 1992) to this new model. Estimated fuel-load costs are discussed in relation to knowledge presently available on variations in basal metabolic costs and transport costs with body mass. We show that fuel-load costs within a reasonable range can explain the observed departure fuel loads when migrating birds are time minimizers. (Less)
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- author
- Klaassen, Marcel
and Lindström, Åke
LU
- organization
- publishing date
- 1996
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Theoretical Biology
- volume
- 183
- issue
- 1
- pages
- 29 - 34
- publisher
- Academic Press
- external identifiers
-
- scopus:0030574233
- ISSN
- 1095-8541
- DOI
- 10.1006/jtbi.1996.0198
- language
- English
- LU publication?
- yes
- id
- 61a72e8d-4b20-475e-9f4f-811291e22dff
- date added to LUP
- 2019-11-10 18:42:22
- date last changed
- 2024-05-16 00:32:05
@article{61a72e8d-4b20-475e-9f4f-811291e22dff,
abstract = {{Lindström & Alerstam (1992Am. Nat.140,477–491) presented a model that predicts optimal departure fuel loads as a function of the rate of fuel deposition in time-minimizing migrants. The basis of the model is that the coverable distance per unit of fuel deposited, diminishes with increasing fuel load. This is an effect of the increasing flight costs associated with increasing body mass. Lindström & Alerstam (1992) found that birds left at lower fuel loads than their model predicted for which they considered various ecological explanations. Alternatively, we hypothesize that the difference between prediction and empirical data might be a result of extra resting metabolic and transport costs associated with an increase in fuel load during stopover. We develop a new version of the Lindström & Alerstam (1992) model taking fuel load associated costs during stopover into account. We fit empirical data from rufous hummingbirdsSelasphorus rufus(Carpenteret al., 1983Proc. Natl. Acad. Sci. U.S.A.80,7259–7263) and bluethroatsLuscinia svecica(Lindström & Alerstam, 1992) to this new model. Estimated fuel-load costs are discussed in relation to knowledge presently available on variations in basal metabolic costs and transport costs with body mass. We show that fuel-load costs within a reasonable range can explain the observed departure fuel loads when migrating birds are time minimizers.}},
author = {{Klaassen, Marcel and Lindström, Åke}},
issn = {{1095-8541}},
language = {{eng}},
number = {{1}},
pages = {{29--34}},
publisher = {{Academic Press}},
series = {{Journal of Theoretical Biology}},
title = {{Departure fuel loads in time-minimizing migrating birds can be explained by the energy costs of being heavy}},
url = {{http://dx.doi.org/10.1006/jtbi.1996.0198}},
doi = {{10.1006/jtbi.1996.0198}},
volume = {{183}},
year = {{1996}},
}