Alternative developmental pathways and the propensity to migrate: a case study in the Atlantic salmon
Abstract Migratory behaviour with its associated phenotypic changes is generally viewed as an adaptive strategy because it incurs survival or reproductive advantages to migrants. The development of a migrant phenotype is believed to be controlled by threshold mechanisms, where individuals emigrate o...
Published in: | Journal of Evolutionary Biology |
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Oxford University Press (OUP)
2010
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croxfordunivpr:10.1111/j.1420-9101.2010.02159.x 2024-05-12T08:01:15+00:00 Alternative developmental pathways and the propensity to migrate: a case study in the Atlantic salmon PÁEZ, D. J. BRISSON‐BONENFANT, C. ROSSIGNOL, O. GUDERLEY, H. E. BERNATCHEZ, L. DODSON, J. J. 2010 http://dx.doi.org/10.1111/j.1420-9101.2010.02159.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1420-9101.2010.02159.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1420-9101.2010.02159.x en eng Oxford University Press (OUP) http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Evolutionary Biology volume 24, issue 2, page 245-255 ISSN 1010-061X 1420-9101 Ecology, Evolution, Behavior and Systematics journal-article 2010 croxfordunivpr https://doi.org/10.1111/j.1420-9101.2010.02159.x 2024-04-18T08:16:54Z Abstract Migratory behaviour with its associated phenotypic changes is generally viewed as an adaptive strategy because it incurs survival or reproductive advantages to migrants. The development of a migrant phenotype is believed to be controlled by threshold mechanisms, where individuals emigrate only after surpassing a particular body size but delay migration if below. For such a strategy to respond to natural selection, part of the phenotypic variance in the propensity to migrate must be explained by variation in additive genetic effects. Here, we use data gathered in the field and from a common rearing experiment to test for a genetic basis associated with seaward migration in Atlantic salmon ( Salmo salar L.). We document a high heritability of the liability trait underlying the propensity to emigrate in juvenile salmon, and significant differences between offspring grouped according to their sires in body‐size threshold values above which emigration takes place. The presence of additive genetic variance in both the liability and thresholds makes the onset of migration a process sensitive to selection and may therefore constitute an important explanatory mechanism for the interpopulation differences in the size at seaward migration observed in this species. Article in Journal/Newspaper Atlantic salmon Salmo salar Oxford University Press Journal of Evolutionary Biology 24 2 245 255 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology, Evolution, Behavior and Systematics PÁEZ, D. J. BRISSON‐BONENFANT, C. ROSSIGNOL, O. GUDERLEY, H. E. BERNATCHEZ, L. DODSON, J. J. Alternative developmental pathways and the propensity to migrate: a case study in the Atlantic salmon |
topic_facet |
Ecology, Evolution, Behavior and Systematics |
description |
Abstract Migratory behaviour with its associated phenotypic changes is generally viewed as an adaptive strategy because it incurs survival or reproductive advantages to migrants. The development of a migrant phenotype is believed to be controlled by threshold mechanisms, where individuals emigrate only after surpassing a particular body size but delay migration if below. For such a strategy to respond to natural selection, part of the phenotypic variance in the propensity to migrate must be explained by variation in additive genetic effects. Here, we use data gathered in the field and from a common rearing experiment to test for a genetic basis associated with seaward migration in Atlantic salmon ( Salmo salar L.). We document a high heritability of the liability trait underlying the propensity to emigrate in juvenile salmon, and significant differences between offspring grouped according to their sires in body‐size threshold values above which emigration takes place. The presence of additive genetic variance in both the liability and thresholds makes the onset of migration a process sensitive to selection and may therefore constitute an important explanatory mechanism for the interpopulation differences in the size at seaward migration observed in this species. |
format |
Article in Journal/Newspaper |
author |
PÁEZ, D. J. BRISSON‐BONENFANT, C. ROSSIGNOL, O. GUDERLEY, H. E. BERNATCHEZ, L. DODSON, J. J. |
author_facet |
PÁEZ, D. J. BRISSON‐BONENFANT, C. ROSSIGNOL, O. GUDERLEY, H. E. BERNATCHEZ, L. DODSON, J. J. |
author_sort |
PÁEZ, D. J. |
title |
Alternative developmental pathways and the propensity to migrate: a case study in the Atlantic salmon |
title_short |
Alternative developmental pathways and the propensity to migrate: a case study in the Atlantic salmon |
title_full |
Alternative developmental pathways and the propensity to migrate: a case study in the Atlantic salmon |
title_fullStr |
Alternative developmental pathways and the propensity to migrate: a case study in the Atlantic salmon |
title_full_unstemmed |
Alternative developmental pathways and the propensity to migrate: a case study in the Atlantic salmon |
title_sort |
alternative developmental pathways and the propensity to migrate: a case study in the atlantic salmon |
publisher |
Oxford University Press (OUP) |
publishDate |
2010 |
url |
http://dx.doi.org/10.1111/j.1420-9101.2010.02159.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1420-9101.2010.02159.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1420-9101.2010.02159.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Evolutionary Biology volume 24, issue 2, page 245-255 ISSN 1010-061X 1420-9101 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1420-9101.2010.02159.x |
container_title |
Journal of Evolutionary Biology |
container_volume |
24 |
container_issue |
2 |
container_start_page |
245 |
op_container_end_page |
255 |
_version_ |
1798843364752228352 |