Temporal analysis of archived samples indicates marked genetic changes in declining North Sea cod (Gadus morhua).
Despite increasing evidence that current exploitation rates can contribute to shifts in life-history traits and the collapse of marine fish stocks, few empirical studies have investigated the likely evolutionary impacts. Here, we used DNA recovered from a temporal series of archived North Sea cod (G...
Published in: | Proceedings of the Royal Society of London. Series B: Biological Sciences |
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691486 http://www.ncbi.nlm.nih.gov/pubmed/14561275 https://doi.org/10.1098/rspb.2003.2493 |
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ftpubmed:oai:pubmedcentral.nih.gov:1691486 2023-05-15T16:19:01+02:00 Temporal analysis of archived samples indicates marked genetic changes in declining North Sea cod (Gadus morhua). Hutchinson, William F van Oosterhout, Cock Rogers, Stuart I Carvalho, Gary R 2003-10-22 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691486 http://www.ncbi.nlm.nih.gov/pubmed/14561275 https://doi.org/10.1098/rspb.2003.2493 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691486 http://www.ncbi.nlm.nih.gov/pubmed/14561275 http://dx.doi.org/10.1098/rspb.2003.2493 Research Article Text 2003 ftpubmed https://doi.org/10.1098/rspb.2003.2493 2013-08-31T12:35:31Z Despite increasing evidence that current exploitation rates can contribute to shifts in life-history traits and the collapse of marine fish stocks, few empirical studies have investigated the likely evolutionary impacts. Here, we used DNA recovered from a temporal series of archived North Sea cod (Gadus morhua) otoliths, to investigate genetic diversity within the Flamborough Head population between 1954 and 1998, during which time the population underwent two successive declines. Microsatellite data indicated a significant reduction in genetic diversity between 1954 and 1970 (total number of alleles: 1954, 46; 1960, 42; 1970, 37), and a subsequent recovery between 1970 and 1998 (total number of alleles: 1970, 37; 1981, 42; 1998, 45). Furthermore, estimates of genetic differentiation (F(ST) and R(ST)) showed a significant divergence between 1998 and earlier samples. Data are consistent with a period of prolonged genetic drift, accompanied by a replacement of the Flamborough Head population through an increased effective migration rate that occurred during a period of high exploitation and appreciable demographic and phenotypic change. Other studies indicate that diversity at neutral microsatellite loci may be correlated with variability at selected genes, thus compromising a population's subsequent recovery and adaptive potential. Such effects are especially pertinent to North Sea cod, which are threatened by continuing exploitation and rising sea temperatures. Text Gadus morhua PubMed Central (PMC) Flamborough Head ENVELOPE(-92.724,-92.724,56.947,56.947) Proceedings of the Royal Society of London. Series B: Biological Sciences 270 1529 2125 2132 |
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Research Article Hutchinson, William F van Oosterhout, Cock Rogers, Stuart I Carvalho, Gary R Temporal analysis of archived samples indicates marked genetic changes in declining North Sea cod (Gadus morhua). |
topic_facet |
Research Article |
description |
Despite increasing evidence that current exploitation rates can contribute to shifts in life-history traits and the collapse of marine fish stocks, few empirical studies have investigated the likely evolutionary impacts. Here, we used DNA recovered from a temporal series of archived North Sea cod (Gadus morhua) otoliths, to investigate genetic diversity within the Flamborough Head population between 1954 and 1998, during which time the population underwent two successive declines. Microsatellite data indicated a significant reduction in genetic diversity between 1954 and 1970 (total number of alleles: 1954, 46; 1960, 42; 1970, 37), and a subsequent recovery between 1970 and 1998 (total number of alleles: 1970, 37; 1981, 42; 1998, 45). Furthermore, estimates of genetic differentiation (F(ST) and R(ST)) showed a significant divergence between 1998 and earlier samples. Data are consistent with a period of prolonged genetic drift, accompanied by a replacement of the Flamborough Head population through an increased effective migration rate that occurred during a period of high exploitation and appreciable demographic and phenotypic change. Other studies indicate that diversity at neutral microsatellite loci may be correlated with variability at selected genes, thus compromising a population's subsequent recovery and adaptive potential. Such effects are especially pertinent to North Sea cod, which are threatened by continuing exploitation and rising sea temperatures. |
format |
Text |
author |
Hutchinson, William F van Oosterhout, Cock Rogers, Stuart I Carvalho, Gary R |
author_facet |
Hutchinson, William F van Oosterhout, Cock Rogers, Stuart I Carvalho, Gary R |
author_sort |
Hutchinson, William F |
title |
Temporal analysis of archived samples indicates marked genetic changes in declining North Sea cod (Gadus morhua). |
title_short |
Temporal analysis of archived samples indicates marked genetic changes in declining North Sea cod (Gadus morhua). |
title_full |
Temporal analysis of archived samples indicates marked genetic changes in declining North Sea cod (Gadus morhua). |
title_fullStr |
Temporal analysis of archived samples indicates marked genetic changes in declining North Sea cod (Gadus morhua). |
title_full_unstemmed |
Temporal analysis of archived samples indicates marked genetic changes in declining North Sea cod (Gadus morhua). |
title_sort |
temporal analysis of archived samples indicates marked genetic changes in declining north sea cod (gadus morhua). |
publishDate |
2003 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691486 http://www.ncbi.nlm.nih.gov/pubmed/14561275 https://doi.org/10.1098/rspb.2003.2493 |
long_lat |
ENVELOPE(-92.724,-92.724,56.947,56.947) |
geographic |
Flamborough Head |
geographic_facet |
Flamborough Head |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691486 http://www.ncbi.nlm.nih.gov/pubmed/14561275 http://dx.doi.org/10.1098/rspb.2003.2493 |
op_doi |
https://doi.org/10.1098/rspb.2003.2493 |
container_title |
Proceedings of the Royal Society of London. Series B: Biological Sciences |
container_volume |
270 |
container_issue |
1529 |
container_start_page |
2125 |
op_container_end_page |
2132 |
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1766005330191319040 |