Evolutionary design of a flexible, seasonally migratory, avian phenotype: why trade gizzard mass against pectoral muscle mass?
Migratory birds undergo impressive body remodelling over the course of an annual cycle. Prior to long-distance flights, red knots (Calidris canutus islandica) reduce gizzard mass while increasing body mass and pectoral muscle mass. Although body mass and pectoral muscle mass are functionally linked...
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ftpubmed:oai:pubmedcentral.nih.gov:6545091 2023-05-15T15:48:26+02:00 Evolutionary design of a flexible, seasonally migratory, avian phenotype: why trade gizzard mass against pectoral muscle mass? Mathot, Kimberley J. Kok, Eva M. A. Burant, Joseph B. Dekinga, Anne Manche, Petra Saintonge, Darren Piersma, Theunis 2019-05-29 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6545091/ http://www.ncbi.nlm.nih.gov/pubmed/31113330 https://doi.org/10.1098/rspb.2019.0518 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6545091/ http://www.ncbi.nlm.nih.gov/pubmed/31113330 http://dx.doi.org/10.1098/rspb.2019.0518 © 2019 The Author(s) http://royalsocietypublishing.org/licence Published by the Royal Society. All rights reserved. Proc Biol Sci Ecology Text 2019 ftpubmed https://doi.org/10.1098/rspb.2019.0518 2020-05-31T00:15:04Z Migratory birds undergo impressive body remodelling over the course of an annual cycle. Prior to long-distance flights, red knots (Calidris canutus islandica) reduce gizzard mass while increasing body mass and pectoral muscle mass. Although body mass and pectoral muscle mass are functionally linked via their joint effects on flight performance, gizzard and pectoral muscle mass are thought to be independently regulated. Current hypotheses for observed negative within-individual covariation between gizzard and pectoral muscle mass in free-living knots are based on a common factor (e.g. migration) simultaneously affecting both traits, and/or protein limitation forcing allocation decisions. We used diet manipulations to generate within-individual variation in gizzard mass and test for independence between gizzard and pectoral muscle mass within individuals outside the period of migration and under conditions of high protein availability. Contrary to our prediction, we observed a negative within-individual covariation between gizzard and pectoral muscle mass. We discuss this result as a potential outcome of an evolved mechanism underlying body remodelling associated with migration. Although our proposed mechanism requires empirical testing, this study echoes earlier calls for greater integration of studies of function and mechanism, and in particular, the need for more explicit consideration of the evolution of mechanisms underlying phenotypic design. Text Calidris canutus PubMed Central (PMC) Proceedings of the Royal Society B: Biological Sciences 286 1903 20190518 |
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English |
topic |
Ecology |
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Ecology Mathot, Kimberley J. Kok, Eva M. A. Burant, Joseph B. Dekinga, Anne Manche, Petra Saintonge, Darren Piersma, Theunis Evolutionary design of a flexible, seasonally migratory, avian phenotype: why trade gizzard mass against pectoral muscle mass? |
topic_facet |
Ecology |
description |
Migratory birds undergo impressive body remodelling over the course of an annual cycle. Prior to long-distance flights, red knots (Calidris canutus islandica) reduce gizzard mass while increasing body mass and pectoral muscle mass. Although body mass and pectoral muscle mass are functionally linked via their joint effects on flight performance, gizzard and pectoral muscle mass are thought to be independently regulated. Current hypotheses for observed negative within-individual covariation between gizzard and pectoral muscle mass in free-living knots are based on a common factor (e.g. migration) simultaneously affecting both traits, and/or protein limitation forcing allocation decisions. We used diet manipulations to generate within-individual variation in gizzard mass and test for independence between gizzard and pectoral muscle mass within individuals outside the period of migration and under conditions of high protein availability. Contrary to our prediction, we observed a negative within-individual covariation between gizzard and pectoral muscle mass. We discuss this result as a potential outcome of an evolved mechanism underlying body remodelling associated with migration. Although our proposed mechanism requires empirical testing, this study echoes earlier calls for greater integration of studies of function and mechanism, and in particular, the need for more explicit consideration of the evolution of mechanisms underlying phenotypic design. |
format |
Text |
author |
Mathot, Kimberley J. Kok, Eva M. A. Burant, Joseph B. Dekinga, Anne Manche, Petra Saintonge, Darren Piersma, Theunis |
author_facet |
Mathot, Kimberley J. Kok, Eva M. A. Burant, Joseph B. Dekinga, Anne Manche, Petra Saintonge, Darren Piersma, Theunis |
author_sort |
Mathot, Kimberley J. |
title |
Evolutionary design of a flexible, seasonally migratory, avian phenotype: why trade gizzard mass against pectoral muscle mass? |
title_short |
Evolutionary design of a flexible, seasonally migratory, avian phenotype: why trade gizzard mass against pectoral muscle mass? |
title_full |
Evolutionary design of a flexible, seasonally migratory, avian phenotype: why trade gizzard mass against pectoral muscle mass? |
title_fullStr |
Evolutionary design of a flexible, seasonally migratory, avian phenotype: why trade gizzard mass against pectoral muscle mass? |
title_full_unstemmed |
Evolutionary design of a flexible, seasonally migratory, avian phenotype: why trade gizzard mass against pectoral muscle mass? |
title_sort |
evolutionary design of a flexible, seasonally migratory, avian phenotype: why trade gizzard mass against pectoral muscle mass? |
publisher |
The Royal Society |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6545091/ http://www.ncbi.nlm.nih.gov/pubmed/31113330 https://doi.org/10.1098/rspb.2019.0518 |
genre |
Calidris canutus |
genre_facet |
Calidris canutus |
op_source |
Proc Biol Sci |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6545091/ http://www.ncbi.nlm.nih.gov/pubmed/31113330 http://dx.doi.org/10.1098/rspb.2019.0518 |
op_rights |
© 2019 The Author(s) http://royalsocietypublishing.org/licence Published by the Royal Society. All rights reserved. |
op_doi |
https://doi.org/10.1098/rspb.2019.0518 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
286 |
container_issue |
1903 |
container_start_page |
20190518 |
_version_ |
1766383410576621568 |