Stochastic and Compensatory Effects Limit Persistence of Variation in Body Mass of Young Caribou
Nutritional restriction during growth can have short- and long-term effects on fitness; however, animals inhabiting uncertain environments may exhibit adaptations to cope with variation in food availability. We examined changes in body mass in free-ranging female caribou ( Rangifer tarandus ) by mea...
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2008
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fthighwire:oai:open-archive.highwire.org:jmammal:89/5/1130 2023-05-15T18:04:18+02:00 Stochastic and Compensatory Effects Limit Persistence of Variation in Body Mass of Young Caribou Dale, Bruce W. Adams, Layne G. Collins, William B. Joly, Kyle Valkenburg, Patrick Tobey, Robert 2008-10-01 00:00:00.0 text/html http://jmammal.oxfordjournals.org/cgi/content/short/89/5/1130 https://doi.org/10.1644/07-MAMM-A-137.1 en eng Oxford University Press http://jmammal.oxfordjournals.org/cgi/content/short/89/5/1130 http://dx.doi.org/10.1644/07-MAMM-A-137.1 Copyright (C) 2008, Oxford University Press Feature Articles TEXT 2008 fthighwire https://doi.org/10.1644/07-MAMM-A-137.1 2016-11-16T18:26:46Z Nutritional restriction during growth can have short- and long-term effects on fitness; however, animals inhabiting uncertain environments may exhibit adaptations to cope with variation in food availability. We examined changes in body mass in free-ranging female caribou ( Rangifer tarandus ) by measuring mass at birth and at 4, 11, and 16 months of age to evaluate the relative importance of seasonal nutrition to growth, the persistence of cohort-specific variation in body mass through time, and compensatory growth of individuals. Relative mean body mass of cohorts did not persist through time. Compensatory growth of smaller individuals was not observed in summer; however, small calves exhibited more positive change in body mass than did large calves. Compensation occurred during periods of nutritional restriction (winter) rather than during periods of rapid growth (summer) thus differing from the conventional view of compensatory growth. Text Rangifer tarandus HighWire Press (Stanford University) Journal of Mammalogy 89 5 1130 1135 |
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HighWire Press (Stanford University) |
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English |
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Feature Articles |
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Feature Articles Dale, Bruce W. Adams, Layne G. Collins, William B. Joly, Kyle Valkenburg, Patrick Tobey, Robert Stochastic and Compensatory Effects Limit Persistence of Variation in Body Mass of Young Caribou |
topic_facet |
Feature Articles |
description |
Nutritional restriction during growth can have short- and long-term effects on fitness; however, animals inhabiting uncertain environments may exhibit adaptations to cope with variation in food availability. We examined changes in body mass in free-ranging female caribou ( Rangifer tarandus ) by measuring mass at birth and at 4, 11, and 16 months of age to evaluate the relative importance of seasonal nutrition to growth, the persistence of cohort-specific variation in body mass through time, and compensatory growth of individuals. Relative mean body mass of cohorts did not persist through time. Compensatory growth of smaller individuals was not observed in summer; however, small calves exhibited more positive change in body mass than did large calves. Compensation occurred during periods of nutritional restriction (winter) rather than during periods of rapid growth (summer) thus differing from the conventional view of compensatory growth. |
format |
Text |
author |
Dale, Bruce W. Adams, Layne G. Collins, William B. Joly, Kyle Valkenburg, Patrick Tobey, Robert |
author_facet |
Dale, Bruce W. Adams, Layne G. Collins, William B. Joly, Kyle Valkenburg, Patrick Tobey, Robert |
author_sort |
Dale, Bruce W. |
title |
Stochastic and Compensatory Effects Limit Persistence of Variation in Body Mass of Young Caribou |
title_short |
Stochastic and Compensatory Effects Limit Persistence of Variation in Body Mass of Young Caribou |
title_full |
Stochastic and Compensatory Effects Limit Persistence of Variation in Body Mass of Young Caribou |
title_fullStr |
Stochastic and Compensatory Effects Limit Persistence of Variation in Body Mass of Young Caribou |
title_full_unstemmed |
Stochastic and Compensatory Effects Limit Persistence of Variation in Body Mass of Young Caribou |
title_sort |
stochastic and compensatory effects limit persistence of variation in body mass of young caribou |
publisher |
Oxford University Press |
publishDate |
2008 |
url |
http://jmammal.oxfordjournals.org/cgi/content/short/89/5/1130 https://doi.org/10.1644/07-MAMM-A-137.1 |
genre |
Rangifer tarandus |
genre_facet |
Rangifer tarandus |
op_relation |
http://jmammal.oxfordjournals.org/cgi/content/short/89/5/1130 http://dx.doi.org/10.1644/07-MAMM-A-137.1 |
op_rights |
Copyright (C) 2008, Oxford University Press |
op_doi |
https://doi.org/10.1644/07-MAMM-A-137.1 |
container_title |
Journal of Mammalogy |
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89 |
container_issue |
5 |
container_start_page |
1130 |
op_container_end_page |
1135 |
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1766175648172212224 |