Ice-age survival of Atlantic cod: agreement between palaeoecology models and genetics
Scant scientific attention has been given to the abundance and distribution of marine biota in the face of the lower sea level, and steeper latitudinal gradient in climate, during the ice-age conditions that have dominated the past million years. Here we examine the glacial persistence of Atlantic c...
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ftpubmed:oai:pubmedcentral.nih.gov:2596182 2023-05-15T15:26:50+02:00 Ice-age survival of Atlantic cod: agreement between palaeoecology models and genetics Bigg, Grant R Cunningham, Clifford W Ottersen, Geir Pogson, Grant H Wadley, Martin R Williamson, Phillip 2007-11-14 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2596182 http://www.ncbi.nlm.nih.gov/pubmed/17999951 https://doi.org/10.1098/rspb.2007.1153 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2596182 http://www.ncbi.nlm.nih.gov/pubmed/17999951 http://dx.doi.org/10.1098/rspb.2007.1153 © 2007 The Royal Society Research Article Text 2007 ftpubmed https://doi.org/10.1098/rspb.2007.1153 2013-09-02T08:26:27Z Scant scientific attention has been given to the abundance and distribution of marine biota in the face of the lower sea level, and steeper latitudinal gradient in climate, during the ice-age conditions that have dominated the past million years. Here we examine the glacial persistence of Atlantic cod (Gadus morhua) populations using two ecological-niche-models (ENM) and the first broad synthesis of multi-locus gene sequence data for this species. One ENM uses a maximum entropy approach (Maxent); the other is a new ENM for Atlantic cod, using ecophysiological parameters based on observed reproductive events rather than adult distribution. Both the ENMs were tested for present-day conditions, then used to hindcast ranges at the last glacial maximum (LGM) ca 21 kyr ago, employing climate model data. Although the LGM range of Atlantic cod was much smaller, and fragmented, both the ENMs agreed that populations should have been able to persist in suitable habitat on both sides of the Atlantic. The genetic results showed a degree of trans-Atlantic divergence consistent with genealogically continuous populations on both sides of the North Atlantic since long before the LGM, confirming the ENM results. In contrast, both the ENMs and the genetic data suggest that the Greenland G. morhua population post-dates the LGM. Text atlantic cod Gadus morhua Greenland North Atlantic PubMed Central (PMC) Greenland Proceedings of the Royal Society B: Biological Sciences 275 1631 163 173 |
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Research Article Bigg, Grant R Cunningham, Clifford W Ottersen, Geir Pogson, Grant H Wadley, Martin R Williamson, Phillip Ice-age survival of Atlantic cod: agreement between palaeoecology models and genetics |
topic_facet |
Research Article |
description |
Scant scientific attention has been given to the abundance and distribution of marine biota in the face of the lower sea level, and steeper latitudinal gradient in climate, during the ice-age conditions that have dominated the past million years. Here we examine the glacial persistence of Atlantic cod (Gadus morhua) populations using two ecological-niche-models (ENM) and the first broad synthesis of multi-locus gene sequence data for this species. One ENM uses a maximum entropy approach (Maxent); the other is a new ENM for Atlantic cod, using ecophysiological parameters based on observed reproductive events rather than adult distribution. Both the ENMs were tested for present-day conditions, then used to hindcast ranges at the last glacial maximum (LGM) ca 21 kyr ago, employing climate model data. Although the LGM range of Atlantic cod was much smaller, and fragmented, both the ENMs agreed that populations should have been able to persist in suitable habitat on both sides of the Atlantic. The genetic results showed a degree of trans-Atlantic divergence consistent with genealogically continuous populations on both sides of the North Atlantic since long before the LGM, confirming the ENM results. In contrast, both the ENMs and the genetic data suggest that the Greenland G. morhua population post-dates the LGM. |
format |
Text |
author |
Bigg, Grant R Cunningham, Clifford W Ottersen, Geir Pogson, Grant H Wadley, Martin R Williamson, Phillip |
author_facet |
Bigg, Grant R Cunningham, Clifford W Ottersen, Geir Pogson, Grant H Wadley, Martin R Williamson, Phillip |
author_sort |
Bigg, Grant R |
title |
Ice-age survival of Atlantic cod: agreement between palaeoecology models and genetics |
title_short |
Ice-age survival of Atlantic cod: agreement between palaeoecology models and genetics |
title_full |
Ice-age survival of Atlantic cod: agreement between palaeoecology models and genetics |
title_fullStr |
Ice-age survival of Atlantic cod: agreement between palaeoecology models and genetics |
title_full_unstemmed |
Ice-age survival of Atlantic cod: agreement between palaeoecology models and genetics |
title_sort |
ice-age survival of atlantic cod: agreement between palaeoecology models and genetics |
publisher |
The Royal Society |
publishDate |
2007 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2596182 http://www.ncbi.nlm.nih.gov/pubmed/17999951 https://doi.org/10.1098/rspb.2007.1153 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
atlantic cod Gadus morhua Greenland North Atlantic |
genre_facet |
atlantic cod Gadus morhua Greenland North Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2596182 http://www.ncbi.nlm.nih.gov/pubmed/17999951 http://dx.doi.org/10.1098/rspb.2007.1153 |
op_rights |
© 2007 The Royal Society |
op_doi |
https://doi.org/10.1098/rspb.2007.1153 |
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Proceedings of the Royal Society B: Biological Sciences |
container_volume |
275 |
container_issue |
1631 |
container_start_page |
163 |
op_container_end_page |
173 |
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1766357315866329088 |