Multiple stock structure of Atlantic cod (Gadus morhua) off Newfoundland and Labrador determined from genetic variation
We examined variation at seven microsatellite loci ( Gmo 3, Gmo 8, Gmo 19, Gmo 34, Gmo 35, Gmo 36, and Gmo 37) and PanI in some 5230 Atlantic cod ( Gadus morhua) from 19 inshore and offshore locations around Newfoundland and Labrador. The mean F ST estimate over all loci was 0.0080. Overall, the cod...
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fthighwire:oai:open-archive.highwire.org:icesjms:59/4/650 2023-05-15T15:27:23+02:00 Multiple stock structure of Atlantic cod (Gadus morhua) off Newfoundland and Labrador determined from genetic variation Beacham, Terry D. Brattey, John Miller, Kristina M. Le, Khai D. Withler, Ruth E. 2002-01-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/59/4/650 https://doi.org/10.1006/jmsc.2002.1253 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/59/4/650 http://dx.doi.org/10.1006/jmsc.2002.1253 Copyright (C) 2002, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Regular Articles TEXT 2002 fthighwire https://doi.org/10.1006/jmsc.2002.1253 2013-05-27T03:28:43Z We examined variation at seven microsatellite loci ( Gmo 3, Gmo 8, Gmo 19, Gmo 34, Gmo 35, Gmo 36, and Gmo 37) and PanI in some 5230 Atlantic cod ( Gadus morhua) from 19 inshore and offshore locations around Newfoundland and Labrador. The mean F ST estimate over all loci was 0.0080. Overall, the cod populations surveyed conformed to an isolation-by-distance structure, cod from more distant locations tending to be more genetically distinct. Among offshore sites, the Flemish Cap population (NAFO Division 3M) was the most distinctive, and among inshore sites, the Gilbert Bay population in southern Labrador (2J) was the most distinctive. In NAFO Divisions 3KL, no significant genetic differentiation was observed among inshore northern cod sampled in four bays (Notre Dame, Bonavista, Trinity, and Conception) along the northeast coast of Newfoundland, and the data do not support the hypothesis of separate “bay stocks”. Annual variation within sampling sites was as large, on average, as the differentiation among sampling sites. The inshore northern cod were distinct from the population in Gilbert Bay and from most offshore northern cod populations. On average, over all populations, regional differences in allele frequencies were seven times larger than annual variation. The offshore samples were more heterogeneous, and there may be at least three distinct offshore spawning populations of northern cod. In Subdivision 3Ps, no consistent differentiation was observed among sampling sites, two in inshore bays (Placentia, Fortune), and two offshore (Burgeo Bank, Halibut Channel). The southern Grand Bank (Divisions 3NO) may have a separate spawning population from those in other offshore sites, but additional sampling is required to confirm population distinctiveness. Text atlantic cod Gadus morhua Newfoundland HighWire Press (Stanford University) Gilbert Bay ENVELOPE(-55.998,-55.998,52.633,52.633) Newfoundland ICES Journal of Marine Science 59 4 650 665 |
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English |
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Regular Articles |
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Regular Articles Beacham, Terry D. Brattey, John Miller, Kristina M. Le, Khai D. Withler, Ruth E. Multiple stock structure of Atlantic cod (Gadus morhua) off Newfoundland and Labrador determined from genetic variation |
topic_facet |
Regular Articles |
description |
We examined variation at seven microsatellite loci ( Gmo 3, Gmo 8, Gmo 19, Gmo 34, Gmo 35, Gmo 36, and Gmo 37) and PanI in some 5230 Atlantic cod ( Gadus morhua) from 19 inshore and offshore locations around Newfoundland and Labrador. The mean F ST estimate over all loci was 0.0080. Overall, the cod populations surveyed conformed to an isolation-by-distance structure, cod from more distant locations tending to be more genetically distinct. Among offshore sites, the Flemish Cap population (NAFO Division 3M) was the most distinctive, and among inshore sites, the Gilbert Bay population in southern Labrador (2J) was the most distinctive. In NAFO Divisions 3KL, no significant genetic differentiation was observed among inshore northern cod sampled in four bays (Notre Dame, Bonavista, Trinity, and Conception) along the northeast coast of Newfoundland, and the data do not support the hypothesis of separate “bay stocks”. Annual variation within sampling sites was as large, on average, as the differentiation among sampling sites. The inshore northern cod were distinct from the population in Gilbert Bay and from most offshore northern cod populations. On average, over all populations, regional differences in allele frequencies were seven times larger than annual variation. The offshore samples were more heterogeneous, and there may be at least three distinct offshore spawning populations of northern cod. In Subdivision 3Ps, no consistent differentiation was observed among sampling sites, two in inshore bays (Placentia, Fortune), and two offshore (Burgeo Bank, Halibut Channel). The southern Grand Bank (Divisions 3NO) may have a separate spawning population from those in other offshore sites, but additional sampling is required to confirm population distinctiveness. |
format |
Text |
author |
Beacham, Terry D. Brattey, John Miller, Kristina M. Le, Khai D. Withler, Ruth E. |
author_facet |
Beacham, Terry D. Brattey, John Miller, Kristina M. Le, Khai D. Withler, Ruth E. |
author_sort |
Beacham, Terry D. |
title |
Multiple stock structure of Atlantic cod (Gadus morhua) off Newfoundland and Labrador determined from genetic variation |
title_short |
Multiple stock structure of Atlantic cod (Gadus morhua) off Newfoundland and Labrador determined from genetic variation |
title_full |
Multiple stock structure of Atlantic cod (Gadus morhua) off Newfoundland and Labrador determined from genetic variation |
title_fullStr |
Multiple stock structure of Atlantic cod (Gadus morhua) off Newfoundland and Labrador determined from genetic variation |
title_full_unstemmed |
Multiple stock structure of Atlantic cod (Gadus morhua) off Newfoundland and Labrador determined from genetic variation |
title_sort |
multiple stock structure of atlantic cod (gadus morhua) off newfoundland and labrador determined from genetic variation |
publisher |
Oxford University Press |
publishDate |
2002 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/59/4/650 https://doi.org/10.1006/jmsc.2002.1253 |
long_lat |
ENVELOPE(-55.998,-55.998,52.633,52.633) |
geographic |
Gilbert Bay Newfoundland |
geographic_facet |
Gilbert Bay Newfoundland |
genre |
atlantic cod Gadus morhua Newfoundland |
genre_facet |
atlantic cod Gadus morhua Newfoundland |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/59/4/650 http://dx.doi.org/10.1006/jmsc.2002.1253 |
op_rights |
Copyright (C) 2002, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1006/jmsc.2002.1253 |
container_title |
ICES Journal of Marine Science |
container_volume |
59 |
container_issue |
4 |
container_start_page |
650 |
op_container_end_page |
665 |
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1766357824007307264 |