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 linke...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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Online Access: | http://dx.doi.org/10.1098/rspb.2019.0518 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2019.0518 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2019.0518 |
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crroyalsociety:10.1098/rspb.2019.0518 2024-09-09T19:35:06+00:00 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 Natural Sciences and Engineering Research Council of Canada Waddenfonds Nederlandse Organisatie voor Wetenschappelijk Onderzoek 2019 http://dx.doi.org/10.1098/rspb.2019.0518 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2019.0518 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2019.0518 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society B: Biological Sciences volume 286, issue 1903, page 20190518 ISSN 0962-8452 1471-2954 journal-article 2019 crroyalsociety https://doi.org/10.1098/rspb.2019.0518 2024-07-15T04:26:46Z 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. Article in Journal/Newspaper Calidris canutus The Royal Society Proceedings of the Royal Society B: Biological Sciences 286 1903 20190518 |
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Open Polar |
collection |
The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
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. |
author2 |
Natural Sciences and Engineering Research Council of Canada Waddenfonds Nederlandse Organisatie voor Wetenschappelijk Onderzoek |
format |
Article in Journal/Newspaper |
author |
Mathot, Kimberley J. Kok, Eva M. A. Burant, Joseph B. Dekinga, Anne Manche, Petra Saintonge, Darren Piersma, Theunis |
spellingShingle |
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? |
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://dx.doi.org/10.1098/rspb.2019.0518 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2019.0518 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2019.0518 |
genre |
Calidris canutus |
genre_facet |
Calidris canutus |
op_source |
Proceedings of the Royal Society B: Biological Sciences volume 286, issue 1903, page 20190518 ISSN 0962-8452 1471-2954 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
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 |
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1809904503662575616 |