Heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes
While evolutionary responses require heritable variation, estimates of heritability (h 2 ) from wild fish populations remain rare. A 20-year molecular pedigree for a wild Scottish population of Atlantic salmon (Salmo salar) was used to investigate genetic contributions to (co)variation in two import...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/cjfas-2018-0123 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0123 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0123 |
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crcansciencepubl:10.1139/cjfas-2018-0123 2024-05-12T08:01:21+00:00 Heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes Reed, Thomas E. Prodöhl, Paulo Bradley, Caroline Gilbey, John McGinnity, Philip Primmer, Craig R. Bacon, Philip J. 2019 http://dx.doi.org/10.1139/cjfas-2018-0123 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0123 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0123 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 76, issue 5, page 790-805 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2019 crcansciencepubl https://doi.org/10.1139/cjfas-2018-0123 2024-04-18T06:54:52Z While evolutionary responses require heritable variation, estimates of heritability (h 2 ) from wild fish populations remain rare. A 20-year molecular pedigree for a wild Scottish population of Atlantic salmon (Salmo salar) was used to investigate genetic contributions to (co)variation in two important, correlated, phenotypic traits: “sea age” (number of winters spent at sea prior to spawning) and size-at-maturity (body length just prior to spawning). Sea age was strongly heritable (h 2 = 0.51) and size exhibited moderate heritability (h 2 = 0.27). A very strong genetic correlation (r G = 0.96) between these traits implied the same functional loci must underpin variation in each. Indeed, body size within sea ages had much lower heritability that did not differ significantly from zero. Thus, within wild S. salar populations, temporal changes in sea age composition could reflect evolutionary responses, whereas rapid changes of body size within sea ages are more likely due to phenotypic plasticity. These inheritance patterns will influence the scope of evolutionary responses to factors such as harvest or climate change and, hence, have management implications for salmonid populations comprising a mix of sea ages. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 76 5 790 805 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Reed, Thomas E. Prodöhl, Paulo Bradley, Caroline Gilbey, John McGinnity, Philip Primmer, Craig R. Bacon, Philip J. Heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
While evolutionary responses require heritable variation, estimates of heritability (h 2 ) from wild fish populations remain rare. A 20-year molecular pedigree for a wild Scottish population of Atlantic salmon (Salmo salar) was used to investigate genetic contributions to (co)variation in two important, correlated, phenotypic traits: “sea age” (number of winters spent at sea prior to spawning) and size-at-maturity (body length just prior to spawning). Sea age was strongly heritable (h 2 = 0.51) and size exhibited moderate heritability (h 2 = 0.27). A very strong genetic correlation (r G = 0.96) between these traits implied the same functional loci must underpin variation in each. Indeed, body size within sea ages had much lower heritability that did not differ significantly from zero. Thus, within wild S. salar populations, temporal changes in sea age composition could reflect evolutionary responses, whereas rapid changes of body size within sea ages are more likely due to phenotypic plasticity. These inheritance patterns will influence the scope of evolutionary responses to factors such as harvest or climate change and, hence, have management implications for salmonid populations comprising a mix of sea ages. |
format |
Article in Journal/Newspaper |
author |
Reed, Thomas E. Prodöhl, Paulo Bradley, Caroline Gilbey, John McGinnity, Philip Primmer, Craig R. Bacon, Philip J. |
author_facet |
Reed, Thomas E. Prodöhl, Paulo Bradley, Caroline Gilbey, John McGinnity, Philip Primmer, Craig R. Bacon, Philip J. |
author_sort |
Reed, Thomas E. |
title |
Heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes |
title_short |
Heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes |
title_full |
Heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes |
title_fullStr |
Heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes |
title_full_unstemmed |
Heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes |
title_sort |
heritability estimation via molecular pedigree reconstruction in a wild fish population reveals substantial evolutionary potential for sea age at maturity, but not size within age classes |
publisher |
Canadian Science Publishing |
publishDate |
2019 |
url |
http://dx.doi.org/10.1139/cjfas-2018-0123 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0123 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0123 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 76, issue 5, page 790-805 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2018-0123 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
76 |
container_issue |
5 |
container_start_page |
790 |
op_container_end_page |
805 |
_version_ |
1798843475017334784 |