Countergradient variation in body shape between two populations of Atlantic cod (Gadus morhua)
Variation in morphological traits is generally thought to be cogradient, with environmental effects on phenotypic expression reinforcing genetic differences between populations. We compared body shape between two populations of Atlantic cod (Gadus morhua). Striking shape differences occurred between...
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ftpubmed:oai:pubmedcentral.nih.gov:1560025 2023-05-15T15:26:58+02:00 Countergradient variation in body shape between two populations of Atlantic cod (Gadus morhua) Marcil, Julie Swain, Douglas P Hutchings, Jeffrey A 2005-11-01 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1560025 http://www.ncbi.nlm.nih.gov/pubmed/16555790 https://doi.org/10.1098/rspb.2005.3306 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1560025 http://www.ncbi.nlm.nih.gov/pubmed/16555790 http://dx.doi.org/10.1098/rspb.2005.3306 © 2005 The Royal Society Research Article Text 2005 ftpubmed https://doi.org/10.1098/rspb.2005.3306 2013-08-31T06:18:55Z Variation in morphological traits is generally thought to be cogradient, with environmental effects on phenotypic expression reinforcing genetic differences between populations. We compared body shape between two populations of Atlantic cod (Gadus morhua). Striking shape differences occurred between juveniles from the two populations when reared in a common laboratory environment. However, no difference in body shape occurred between wild-reared juveniles from the two populations, suggesting that the genetic differences between populations were obscured by opposing effects of the environmental differences experienced in the wild. We suggest that much of the genetic diversity in body shape of fishes may be cryptic, with stabilizing selection for the same optimal phenotype resulting in genetic divergence between populations subject to contrasting environmental influences. Text atlantic cod Gadus morhua PubMed Central (PMC) Proceedings of the Royal Society B: Biological Sciences 273 1583 217 223 |
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Research Article Marcil, Julie Swain, Douglas P Hutchings, Jeffrey A Countergradient variation in body shape between two populations of Atlantic cod (Gadus morhua) |
topic_facet |
Research Article |
description |
Variation in morphological traits is generally thought to be cogradient, with environmental effects on phenotypic expression reinforcing genetic differences between populations. We compared body shape between two populations of Atlantic cod (Gadus morhua). Striking shape differences occurred between juveniles from the two populations when reared in a common laboratory environment. However, no difference in body shape occurred between wild-reared juveniles from the two populations, suggesting that the genetic differences between populations were obscured by opposing effects of the environmental differences experienced in the wild. We suggest that much of the genetic diversity in body shape of fishes may be cryptic, with stabilizing selection for the same optimal phenotype resulting in genetic divergence between populations subject to contrasting environmental influences. |
format |
Text |
author |
Marcil, Julie Swain, Douglas P Hutchings, Jeffrey A |
author_facet |
Marcil, Julie Swain, Douglas P Hutchings, Jeffrey A |
author_sort |
Marcil, Julie |
title |
Countergradient variation in body shape between two populations of Atlantic cod (Gadus morhua) |
title_short |
Countergradient variation in body shape between two populations of Atlantic cod (Gadus morhua) |
title_full |
Countergradient variation in body shape between two populations of Atlantic cod (Gadus morhua) |
title_fullStr |
Countergradient variation in body shape between two populations of Atlantic cod (Gadus morhua) |
title_full_unstemmed |
Countergradient variation in body shape between two populations of Atlantic cod (Gadus morhua) |
title_sort |
countergradient variation in body shape between two populations of atlantic cod (gadus morhua) |
publisher |
The Royal Society |
publishDate |
2005 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1560025 http://www.ncbi.nlm.nih.gov/pubmed/16555790 https://doi.org/10.1098/rspb.2005.3306 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1560025 http://www.ncbi.nlm.nih.gov/pubmed/16555790 http://dx.doi.org/10.1098/rspb.2005.3306 |
op_rights |
© 2005 The Royal Society |
op_doi |
https://doi.org/10.1098/rspb.2005.3306 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
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273 |
container_issue |
1583 |
container_start_page |
217 |
op_container_end_page |
223 |
_version_ |
1766357437825155072 |