Historical changes in genotypic frequencies at the Pantophysin locus in Atlantic cod (Gadus morhua) in Icelandic waters: evidence of fisheries-induced selection?
The intense fishing mortality imposed on Atlantic cod in Icelandic waters during recent decades has resulted in marked changes in stock abundance, as well as in age and size composition. Using a molecular marker known to be under selection (Pan I) along with a suite of six neutral microsatellite loc...
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ftpubmed:oai:pubmedcentral.nih.gov:3352422 2023-05-15T15:27:14+02:00 Historical changes in genotypic frequencies at the Pantophysin locus in Atlantic cod (Gadus morhua) in Icelandic waters: evidence of fisheries-induced selection? Jakobsdóttir, Klara B Pardoe, Heidi Magnússon, Árni Björnsson, Höskuldur Pampoulie, Christophe Ruzzante, Daniel E Marteinsdóttir, Guðrún 2011-07 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352422 https://doi.org/10.1111/j.1752-4571.2010.00176.x en eng Blackwell Publishing Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352422 http://dx.doi.org/10.1111/j.1752-4571.2010.00176.x © 2011 Blackwell Publishing Ltd Original Articles Text 2011 ftpubmed https://doi.org/10.1111/j.1752-4571.2010.00176.x 2013-09-04T07:15:40Z The intense fishing mortality imposed on Atlantic cod in Icelandic waters during recent decades has resulted in marked changes in stock abundance, as well as in age and size composition. Using a molecular marker known to be under selection (Pan I) along with a suite of six neutral microsatellite loci, we analysed an archived data set and revealed evidence of distinct temporal changes in the frequencies of genotypes at the Pan I locus among spawning Icelandic cod, collected between 1948 and 2002, a period characterized by high fishing pressure. Concurrently, temporal stability in the composition of the microsatellite loci was established within the same data set. The frequency of the Pan IBB genotype decreased over a period of six decades, concomitant with considerable spatial and technical changes in fishing effort that resulted in the disappearance of older individuals from the fishable stock. Consequently, these changes have likely led to a change in the genotype frequencies at this locus in the spawning stock of Icelandic cod. The study highlights the value of molecular genetic approaches that combine functional and neutral markers examined in the same set of individuals for investigations of the selective effects of harvesting and reiterates the need for an evolutionary dimension to fisheries management. Text atlantic cod Gadus morhua PubMed Central (PMC) Evolutionary Applications 4 4 562 573 |
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Original Articles |
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Original Articles Jakobsdóttir, Klara B Pardoe, Heidi Magnússon, Árni Björnsson, Höskuldur Pampoulie, Christophe Ruzzante, Daniel E Marteinsdóttir, Guðrún Historical changes in genotypic frequencies at the Pantophysin locus in Atlantic cod (Gadus morhua) in Icelandic waters: evidence of fisheries-induced selection? |
topic_facet |
Original Articles |
description |
The intense fishing mortality imposed on Atlantic cod in Icelandic waters during recent decades has resulted in marked changes in stock abundance, as well as in age and size composition. Using a molecular marker known to be under selection (Pan I) along with a suite of six neutral microsatellite loci, we analysed an archived data set and revealed evidence of distinct temporal changes in the frequencies of genotypes at the Pan I locus among spawning Icelandic cod, collected between 1948 and 2002, a period characterized by high fishing pressure. Concurrently, temporal stability in the composition of the microsatellite loci was established within the same data set. The frequency of the Pan IBB genotype decreased over a period of six decades, concomitant with considerable spatial and technical changes in fishing effort that resulted in the disappearance of older individuals from the fishable stock. Consequently, these changes have likely led to a change in the genotype frequencies at this locus in the spawning stock of Icelandic cod. The study highlights the value of molecular genetic approaches that combine functional and neutral markers examined in the same set of individuals for investigations of the selective effects of harvesting and reiterates the need for an evolutionary dimension to fisheries management. |
format |
Text |
author |
Jakobsdóttir, Klara B Pardoe, Heidi Magnússon, Árni Björnsson, Höskuldur Pampoulie, Christophe Ruzzante, Daniel E Marteinsdóttir, Guðrún |
author_facet |
Jakobsdóttir, Klara B Pardoe, Heidi Magnússon, Árni Björnsson, Höskuldur Pampoulie, Christophe Ruzzante, Daniel E Marteinsdóttir, Guðrún |
author_sort |
Jakobsdóttir, Klara B |
title |
Historical changes in genotypic frequencies at the Pantophysin locus in Atlantic cod (Gadus morhua) in Icelandic waters: evidence of fisheries-induced selection? |
title_short |
Historical changes in genotypic frequencies at the Pantophysin locus in Atlantic cod (Gadus morhua) in Icelandic waters: evidence of fisheries-induced selection? |
title_full |
Historical changes in genotypic frequencies at the Pantophysin locus in Atlantic cod (Gadus morhua) in Icelandic waters: evidence of fisheries-induced selection? |
title_fullStr |
Historical changes in genotypic frequencies at the Pantophysin locus in Atlantic cod (Gadus morhua) in Icelandic waters: evidence of fisheries-induced selection? |
title_full_unstemmed |
Historical changes in genotypic frequencies at the Pantophysin locus in Atlantic cod (Gadus morhua) in Icelandic waters: evidence of fisheries-induced selection? |
title_sort |
historical changes in genotypic frequencies at the pantophysin locus in atlantic cod (gadus morhua) in icelandic waters: evidence of fisheries-induced selection? |
publisher |
Blackwell Publishing Ltd |
publishDate |
2011 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352422 https://doi.org/10.1111/j.1752-4571.2010.00176.x |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3352422 http://dx.doi.org/10.1111/j.1752-4571.2010.00176.x |
op_rights |
© 2011 Blackwell Publishing Ltd |
op_doi |
https://doi.org/10.1111/j.1752-4571.2010.00176.x |
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Evolutionary Applications |
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4 |
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4 |
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562 |
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573 |
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1766357675589763072 |