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Hybridization effects on phenotypic plasticity: experimental compensatory growth in farmed-wild Atlantic salmon

Compensatory growth (CG) is a means by which organisms can increase their growth rate above their routine growth rate after a period of environmentally induced growth depression. Despite a focus on the implications of CG for aquaculture, little research has evaluated the effect of domesticated–wild...

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Autores principales: Morris, Matthew R J, Fraser, Dylan J, Eddington, James, Hutchings, Jeffrey A
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Blackwell Publishing Ltd 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352526/
https://www.ncbi.nlm.nih.gov/pubmed/25567994
http://dx.doi.org/10.1111/j.1752-4571.2010.00159.x
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author Morris, Matthew R J
Fraser, Dylan J
Eddington, James
Hutchings, Jeffrey A
author_facet Morris, Matthew R J
Fraser, Dylan J
Eddington, James
Hutchings, Jeffrey A
author_sort Morris, Matthew R J
collection PubMed
description Compensatory growth (CG) is a means by which organisms can increase their growth rate above their routine growth rate after a period of environmentally induced growth depression. Despite a focus on the implications of CG for aquaculture, little research has evaluated the effect of domesticated–wild hybridization on CG. Any deviation in the mean compensatory ability of hybrids relative to their wild progenitors, or any notable costs to compensation in terms of body morphology, could affect the ability of hybrids to persist in changing environments. We compared CG of farmed, wild and hybrid (F1, F2, wild backcross) juvenile Atlantic salmon (Salmo salar). Wild salmon experienced both lower routine and CG rates relative to farmed salmon, while hybrids were intermediate. However, the compensatory responses (slopes of the reaction norms) for each cross were parallel, indicating that hybridization did not affect the CG response itself. Morphological costs to compensation were not detected. In addition to contributing to risk assessments of the consequences of interbreeding between wild and escaped domesticated organisms, we conclude that plasticity studies on domesticated–wild hybrids and their progenitors are useful for testing basic predictions about the evolution of phenotypic plasticity, as well as understanding the evolutionary significance of hybrids.
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spelling pubmed-33525262012-05-24 Hybridization effects on phenotypic plasticity: experimental compensatory growth in farmed-wild Atlantic salmon Morris, Matthew R J Fraser, Dylan J Eddington, James Hutchings, Jeffrey A Evol Appl Original Articles Compensatory growth (CG) is a means by which organisms can increase their growth rate above their routine growth rate after a period of environmentally induced growth depression. Despite a focus on the implications of CG for aquaculture, little research has evaluated the effect of domesticated–wild hybridization on CG. Any deviation in the mean compensatory ability of hybrids relative to their wild progenitors, or any notable costs to compensation in terms of body morphology, could affect the ability of hybrids to persist in changing environments. We compared CG of farmed, wild and hybrid (F1, F2, wild backcross) juvenile Atlantic salmon (Salmo salar). Wild salmon experienced both lower routine and CG rates relative to farmed salmon, while hybrids were intermediate. However, the compensatory responses (slopes of the reaction norms) for each cross were parallel, indicating that hybridization did not affect the CG response itself. Morphological costs to compensation were not detected. In addition to contributing to risk assessments of the consequences of interbreeding between wild and escaped domesticated organisms, we conclude that plasticity studies on domesticated–wild hybrids and their progenitors are useful for testing basic predictions about the evolution of phenotypic plasticity, as well as understanding the evolutionary significance of hybrids. Blackwell Publishing Ltd 2011-05 2010-10-12 /pmc/articles/PMC3352526/ /pubmed/25567994 http://dx.doi.org/10.1111/j.1752-4571.2010.00159.x Text en © 2010 Blackwell Publishing Ltd
spellingShingle Original Articles
Morris, Matthew R J
Fraser, Dylan J
Eddington, James
Hutchings, Jeffrey A
Hybridization effects on phenotypic plasticity: experimental compensatory growth in farmed-wild Atlantic salmon
title Hybridization effects on phenotypic plasticity: experimental compensatory growth in farmed-wild Atlantic salmon
title_full Hybridization effects on phenotypic plasticity: experimental compensatory growth in farmed-wild Atlantic salmon
title_fullStr Hybridization effects on phenotypic plasticity: experimental compensatory growth in farmed-wild Atlantic salmon
title_full_unstemmed Hybridization effects on phenotypic plasticity: experimental compensatory growth in farmed-wild Atlantic salmon
title_short Hybridization effects on phenotypic plasticity: experimental compensatory growth in farmed-wild Atlantic salmon
title_sort hybridization effects on phenotypic plasticity: experimental compensatory growth in farmed-wild atlantic salmon
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352526/
https://www.ncbi.nlm.nih.gov/pubmed/25567994
http://dx.doi.org/10.1111/j.1752-4571.2010.00159.x
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