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...
Main Authors: | , , , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
2008
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.548.2203 http://biology.duke.edu/cunningham/pdfs/BiggFinalProcRoy2008.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.548.2203 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.548.2203 2023-05-15T15:26:53+02:00 Ice-age survival of Atlantic cod: agreement between palaeoecology models and genetics Grant R. Bigg Clifford W. Cunningham Geir Ottersen Grant H. Pogson Martin R. Wadley Phillip Williamson The Pennsylvania State University CiteSeerX Archives 2008 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.548.2203 http://biology.duke.edu/cunningham/pdfs/BiggFinalProcRoy2008.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.548.2203 http://biology.duke.edu/cunningham/pdfs/BiggFinalProcRoy2008.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://biology.duke.edu/cunningham/pdfs/BiggFinalProcRoy2008.pdf cod ecological-niche-modelling DNA sequence glacial text 2008 ftciteseerx 2016-01-08T11:23:20Z 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 Unknown Greenland |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
cod ecological-niche-modelling DNA sequence glacial |
spellingShingle |
cod ecological-niche-modelling DNA sequence glacial Grant R. Bigg Clifford W. Cunningham Geir Ottersen Grant H. Pogson Martin R. Wadley Phillip Williamson Ice-age survival of Atlantic cod: agreement between palaeoecology models and genetics |
topic_facet |
cod ecological-niche-modelling DNA sequence glacial |
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. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Grant R. Bigg Clifford W. Cunningham Geir Ottersen Grant H. Pogson Martin R. Wadley Phillip Williamson |
author_facet |
Grant R. Bigg Clifford W. Cunningham Geir Ottersen Grant H. Pogson Martin R. Wadley Phillip Williamson |
author_sort |
Grant R. Bigg |
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 |
publishDate |
2008 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.548.2203 http://biology.duke.edu/cunningham/pdfs/BiggFinalProcRoy2008.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
atlantic cod Gadus morhua Greenland North Atlantic |
genre_facet |
atlantic cod Gadus morhua Greenland North Atlantic |
op_source |
http://biology.duke.edu/cunningham/pdfs/BiggFinalProcRoy2008.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.548.2203 http://biology.duke.edu/cunningham/pdfs/BiggFinalProcRoy2008.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766357353550053376 |