NAFO Sci. Coun. Studies, 29: 51–60 Bank-Scale Migration Patterns in Northern Cod
Proper resolution of population structure is necessary not only for the interpretation of temporal and spatial variations in the biology of a species, but also for successful manage-ment. This is particularly true for the seriously depleted northern cod (Gadus morhua) stock complex (NAFO Divisions 2...
Main Author: | |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.573.4545 http://www.phys.ocean.dal.ca/~taggart/Publications/Taggart_NAFOSCS-29_1997.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.573.4545 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.573.4545 2023-05-15T16:19:20+02:00 NAFO Sci. Coun. Studies, 29: 51–60 Bank-Scale Migration Patterns in Northern Cod Christopher T. Taggart The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.573.4545 http://www.phys.ocean.dal.ca/~taggart/Publications/Taggart_NAFOSCS-29_1997.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.573.4545 http://www.phys.ocean.dal.ca/~taggart/Publications/Taggart_NAFOSCS-29_1997.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.phys.ocean.dal.ca/~taggart/Publications/Taggart_NAFOSCS-29_1997.pdf cod migration NW Atlantic stock structure tagging text ftciteseerx 2016-01-08T12:38:26Z Proper resolution of population structure is necessary not only for the interpretation of temporal and spatial variations in the biology of a species, but also for successful manage-ment. This is particularly true for the seriously depleted northern cod (Gadus morhua) stock complex (NAFO Divisions 2J, 3K, and 3L). In this paper, data collected over the last three decades from tagging studies conducted in winter on Hamilton and Belle Isle Banks and in the North Cape region of the northern Grand Bank, are employed to assess migration pat-terns in northern cod and to compare those patterns to the population structure described in recent genetic studies cAwainonducted on populations from the same regions. The re-sults reveal that the average geographic distribution of cod tagged in the vicinity of Hamil-ton Bank in winter overlaps in the offshore winter distribution with those tagged on Belle Isle Bank, showing the populations can intermingle during the offshore spawning period. The average geographic distribution of cod tagged in winter in the North Cape region did not overlap with those fish tagged on either Hamilton or Belle Isle Bank. Likewise, the average winter distributions of cod from the latter two banks did not overlap with those from the North Cape area. These results are entirely consistent with recent and earlier genetic stud-ies of populations from the same regions and suggest that the northern cod stock complex is comprised of at least two discrete offshore populations. The results from this study are used to present a testable hypothesis to explain anomalous distributions in recent years for northern cod in the offshore and inshore areas of Newfoundland. Text Gadus morhua Newfoundland North Cape Unknown Belle Isle ENVELOPE(-55.357,-55.357,51.942,51.942) North Cape ENVELOPE(165.700,165.700,-70.650,-70.650) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
cod migration NW Atlantic stock structure tagging |
spellingShingle |
cod migration NW Atlantic stock structure tagging Christopher T. Taggart NAFO Sci. Coun. Studies, 29: 51–60 Bank-Scale Migration Patterns in Northern Cod |
topic_facet |
cod migration NW Atlantic stock structure tagging |
description |
Proper resolution of population structure is necessary not only for the interpretation of temporal and spatial variations in the biology of a species, but also for successful manage-ment. This is particularly true for the seriously depleted northern cod (Gadus morhua) stock complex (NAFO Divisions 2J, 3K, and 3L). In this paper, data collected over the last three decades from tagging studies conducted in winter on Hamilton and Belle Isle Banks and in the North Cape region of the northern Grand Bank, are employed to assess migration pat-terns in northern cod and to compare those patterns to the population structure described in recent genetic studies cAwainonducted on populations from the same regions. The re-sults reveal that the average geographic distribution of cod tagged in the vicinity of Hamil-ton Bank in winter overlaps in the offshore winter distribution with those tagged on Belle Isle Bank, showing the populations can intermingle during the offshore spawning period. The average geographic distribution of cod tagged in winter in the North Cape region did not overlap with those fish tagged on either Hamilton or Belle Isle Bank. Likewise, the average winter distributions of cod from the latter two banks did not overlap with those from the North Cape area. These results are entirely consistent with recent and earlier genetic stud-ies of populations from the same regions and suggest that the northern cod stock complex is comprised of at least two discrete offshore populations. The results from this study are used to present a testable hypothesis to explain anomalous distributions in recent years for northern cod in the offshore and inshore areas of Newfoundland. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Christopher T. Taggart |
author_facet |
Christopher T. Taggart |
author_sort |
Christopher T. Taggart |
title |
NAFO Sci. Coun. Studies, 29: 51–60 Bank-Scale Migration Patterns in Northern Cod |
title_short |
NAFO Sci. Coun. Studies, 29: 51–60 Bank-Scale Migration Patterns in Northern Cod |
title_full |
NAFO Sci. Coun. Studies, 29: 51–60 Bank-Scale Migration Patterns in Northern Cod |
title_fullStr |
NAFO Sci. Coun. Studies, 29: 51–60 Bank-Scale Migration Patterns in Northern Cod |
title_full_unstemmed |
NAFO Sci. Coun. Studies, 29: 51–60 Bank-Scale Migration Patterns in Northern Cod |
title_sort |
nafo sci. coun. studies, 29: 51–60 bank-scale migration patterns in northern cod |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.573.4545 http://www.phys.ocean.dal.ca/~taggart/Publications/Taggart_NAFOSCS-29_1997.pdf |
long_lat |
ENVELOPE(-55.357,-55.357,51.942,51.942) ENVELOPE(165.700,165.700,-70.650,-70.650) |
geographic |
Belle Isle North Cape |
geographic_facet |
Belle Isle North Cape |
genre |
Gadus morhua Newfoundland North Cape |
genre_facet |
Gadus morhua Newfoundland North Cape |
op_source |
http://www.phys.ocean.dal.ca/~taggart/Publications/Taggart_NAFOSCS-29_1997.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.573.4545 http://www.phys.ocean.dal.ca/~taggart/Publications/Taggart_NAFOSCS-29_1997.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766005715067994112 |