Long-term stability and effective population size in North Sea and Baltic Sea cod ( Gadus morhua )
DNA from archived otoliths was used to explore the temporal stability of the genetic composition of two cod populations, the Moray Firth (North Sea) sampled in 1965 and 2002, and the Bornholm Basin (Baltic Sea) sampled in 1928 and 1997. We found no significant changes in the allele frequencies for t...
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ftdtupubl:oai:pure.atira.dk:publications/747f2c15-77b1-48ee-880e-61f7e8e22235 2024-06-23T07:51:06+00:00 Long-term stability and effective population size in North Sea and Baltic Sea cod ( Gadus morhua ) Poulsen, Nina Aagaard Eg Nielsen, Einar Schierup, M.H. Loeschcke, V. Grønkjær, P. 2006 https://orbit.dtu.dk/en/publications/747f2c15-77b1-48ee-880e-61f7e8e22235 https://doi.org/10.1111/j.1365-294X.2005.02777.x eng eng https://orbit.dtu.dk/en/publications/747f2c15-77b1-48ee-880e-61f7e8e22235 info:eu-repo/semantics/restrictedAccess Poulsen , N A , Eg Nielsen , E , Schierup , M H , Loeschcke , V & Grønkjær , P 2006 , ' Long-term stability and effective population size in North Sea and Baltic Sea cod ( Gadus morhua ) ' , Molecular Ecology , vol. 15 , no. 2 , pp. 321-331 . https://doi.org/10.1111/j.1365-294X.2005.02777.x Erhvervsfiskeri /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2006 ftdtupubl https://doi.org/10.1111/j.1365-294X.2005.02777.x 2024-06-11T14:27:12Z DNA from archived otoliths was used to explore the temporal stability of the genetic composition of two cod populations, the Moray Firth (North Sea) sampled in 1965 and 2002, and the Bornholm Basin (Baltic Sea) sampled in 1928 and 1997. We found no significant changes in the allele frequencies for the Moray Firth population, while subtle but significant genetic changes over time were detected for the Bornholm Basin population. Estimates of the effective population size (N-e) generally exceeded 500 for both populations when employing a number of varieties of the temporal genetic method. However, confidence intervals were very wide and N-e's most likely range in the thousands. There was no apparent loss of genetic variability and no evidence of a genetic bottleneck for either of the populations. Calculations of the expected levels of genetic variability under different scenarios of N-e showed that the number of alleles commonly reported at microsatellite loci in Atlantic cod is best explained by N-e's exceeding thousand. Recent fishery-induced bottlenecks can, however, not be ruled out as an explanation for the apparent discrepancy between high levels of variability and recently reported estimates of N-e Article in Journal/Newspaper atlantic cod Gadus morhua Technical University of Denmark: DTU Orbit Molecular Ecology 15 2 321 331 |
institution |
Open Polar |
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Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Erhvervsfiskeri /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Erhvervsfiskeri /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Poulsen, Nina Aagaard Eg Nielsen, Einar Schierup, M.H. Loeschcke, V. Grønkjær, P. Long-term stability and effective population size in North Sea and Baltic Sea cod ( Gadus morhua ) |
topic_facet |
Erhvervsfiskeri /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
DNA from archived otoliths was used to explore the temporal stability of the genetic composition of two cod populations, the Moray Firth (North Sea) sampled in 1965 and 2002, and the Bornholm Basin (Baltic Sea) sampled in 1928 and 1997. We found no significant changes in the allele frequencies for the Moray Firth population, while subtle but significant genetic changes over time were detected for the Bornholm Basin population. Estimates of the effective population size (N-e) generally exceeded 500 for both populations when employing a number of varieties of the temporal genetic method. However, confidence intervals were very wide and N-e's most likely range in the thousands. There was no apparent loss of genetic variability and no evidence of a genetic bottleneck for either of the populations. Calculations of the expected levels of genetic variability under different scenarios of N-e showed that the number of alleles commonly reported at microsatellite loci in Atlantic cod is best explained by N-e's exceeding thousand. Recent fishery-induced bottlenecks can, however, not be ruled out as an explanation for the apparent discrepancy between high levels of variability and recently reported estimates of N-e |
format |
Article in Journal/Newspaper |
author |
Poulsen, Nina Aagaard Eg Nielsen, Einar Schierup, M.H. Loeschcke, V. Grønkjær, P. |
author_facet |
Poulsen, Nina Aagaard Eg Nielsen, Einar Schierup, M.H. Loeschcke, V. Grønkjær, P. |
author_sort |
Poulsen, Nina Aagaard |
title |
Long-term stability and effective population size in North Sea and Baltic Sea cod ( Gadus morhua ) |
title_short |
Long-term stability and effective population size in North Sea and Baltic Sea cod ( Gadus morhua ) |
title_full |
Long-term stability and effective population size in North Sea and Baltic Sea cod ( Gadus morhua ) |
title_fullStr |
Long-term stability and effective population size in North Sea and Baltic Sea cod ( Gadus morhua ) |
title_full_unstemmed |
Long-term stability and effective population size in North Sea and Baltic Sea cod ( Gadus morhua ) |
title_sort |
long-term stability and effective population size in north sea and baltic sea cod ( gadus morhua ) |
publishDate |
2006 |
url |
https://orbit.dtu.dk/en/publications/747f2c15-77b1-48ee-880e-61f7e8e22235 https://doi.org/10.1111/j.1365-294X.2005.02777.x |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Poulsen , N A , Eg Nielsen , E , Schierup , M H , Loeschcke , V & Grønkjær , P 2006 , ' Long-term stability and effective population size in North Sea and Baltic Sea cod ( Gadus morhua ) ' , Molecular Ecology , vol. 15 , no. 2 , pp. 321-331 . https://doi.org/10.1111/j.1365-294X.2005.02777.x |
op_relation |
https://orbit.dtu.dk/en/publications/747f2c15-77b1-48ee-880e-61f7e8e22235 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1365-294X.2005.02777.x |
container_title |
Molecular Ecology |
container_volume |
15 |
container_issue |
2 |
container_start_page |
321 |
op_container_end_page |
331 |
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1802642090920771584 |