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...
Published in: | Evolutionary Applications |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2013
|
Subjects: | |
Online Access: | https://doi.org/10.1111/j.1752-4571.2010.00176.x http://hdl.handle.net/10222/29499 |
id |
ftdalhouse:oai:DalSpace.library.dal.ca:10222/29499 |
---|---|
record_format |
openpolar |
spelling |
ftdalhouse:oai:DalSpace.library.dal.ca:10222/29499 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? Jakobsdottir, Klara B. Pardoe, Heidi Magnusson, Arni Bjornsson, Hoskuldur Pampoulie, Christophe Ruzzante, Daniel Eduardo Marteinsdottir, Guorun 2013-07-04T18:44:13Z https://doi.org/10.1111/j.1752-4571.2010.00176.x http://hdl.handle.net/10222/29499 unknown Evolutionary Applications Jakobsdottir, Klara B., Heidi Pardoe, Arni Magnusson, Hoskuldur Bjornsson, et al. 2011. "Historical changes in genotypic frequencies at the Pantophysin locus in Atlantic cod (Gadus morhua) in Icelandic waters: evidence of fisheries-induced selection?." Evolutionary Applications 4(4): 562-573. 1752-4571 http://dx.doi.org/10.1111/j.1752-4571.2010.00176.x http://hdl.handle.net/10222/29499 4 562 article 2013 ftdalhouse https://doi.org/10.1111/j.1752-4571.2010.00176.x 2021-12-29T18:08:48Z 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 I BB 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. Article in Journal/Newspaper atlantic cod Gadus morhua Dalhousie University: DalSpace Institutional Repository Evolutionary Applications 4 4 562 573 |
institution |
Open Polar |
collection |
Dalhousie University: DalSpace Institutional Repository |
op_collection_id |
ftdalhouse |
language |
unknown |
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 I BB 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 |
Article in Journal/Newspaper |
author |
Jakobsdottir, Klara B. Pardoe, Heidi Magnusson, Arni Bjornsson, Hoskuldur Pampoulie, Christophe Ruzzante, Daniel Eduardo Marteinsdottir, Guorun |
spellingShingle |
Jakobsdottir, Klara B. Pardoe, Heidi Magnusson, Arni Bjornsson, Hoskuldur Pampoulie, Christophe Ruzzante, Daniel Eduardo Marteinsdottir, Guorun Historical changes in genotypic frequencies at the Pantophysin locus in Atlantic cod (Gadus morhua) in Icelandic waters: evidence of fisheries-induced selection? |
author_facet |
Jakobsdottir, Klara B. Pardoe, Heidi Magnusson, Arni Bjornsson, Hoskuldur Pampoulie, Christophe Ruzzante, Daniel Eduardo Marteinsdottir, Guorun |
author_sort |
Jakobsdottir, 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? |
publishDate |
2013 |
url |
https://doi.org/10.1111/j.1752-4571.2010.00176.x http://hdl.handle.net/10222/29499 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
Evolutionary Applications Jakobsdottir, Klara B., Heidi Pardoe, Arni Magnusson, Hoskuldur Bjornsson, et al. 2011. "Historical changes in genotypic frequencies at the Pantophysin locus in Atlantic cod (Gadus morhua) in Icelandic waters: evidence of fisheries-induced selection?." Evolutionary Applications 4(4): 562-573. 1752-4571 http://dx.doi.org/10.1111/j.1752-4571.2010.00176.x http://hdl.handle.net/10222/29499 4 562 |
op_doi |
https://doi.org/10.1111/j.1752-4571.2010.00176.x |
container_title |
Evolutionary Applications |
container_volume |
4 |
container_issue |
4 |
container_start_page |
562 |
op_container_end_page |
573 |
_version_ |
1766357683670089728 |