Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters
Adult cod (Gadus morhua) inhabiting continental shelf waters of the Northwest Atlantic typically display a countershaded colouration: a dark back gradating to a light underbelly. Some cod in Newfoundland and Labrador inshore waters have predominantly brown or red pigmentation. Cod inhabiting Gilbert...
Published in: | ICES Journal of Marine Science |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Oxford University Press
2004
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Online Access: | https://research.library.mun.ca/2015/ https://research.library.mun.ca/2015/1/Variant_colourations_of_Atlantic_cod_Gadus_morhua_in_Newfoundland_and_Labrador_nearshore_waters.pdf https://research.library.mun.ca/2015/3/Variant_colourations_of_Atlantic_cod_Gadus_morhua_in_Newfoundland_and_Labrador_nearshore_waters.pdf https://doi.org/10.1016/j.icesjms.2004.04.003 |
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ftmemorialuniv:oai:research.library.mun.ca:2015 2023-10-01T03:54:32+02:00 Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters Wroblewski, Joseph S. Gosse, Karen R. 2004 application/pdf https://research.library.mun.ca/2015/ https://research.library.mun.ca/2015/1/Variant_colourations_of_Atlantic_cod_Gadus_morhua_in_Newfoundland_and_Labrador_nearshore_waters.pdf https://research.library.mun.ca/2015/3/Variant_colourations_of_Atlantic_cod_Gadus_morhua_in_Newfoundland_and_Labrador_nearshore_waters.pdf https://doi.org/10.1016/j.icesjms.2004.04.003 en eng Oxford University Press https://research.library.mun.ca/2015/1/Variant_colourations_of_Atlantic_cod_Gadus_morhua_in_Newfoundland_and_Labrador_nearshore_waters.pdf https://research.library.mun.ca/2015/3/Variant_colourations_of_Atlantic_cod_Gadus_morhua_in_Newfoundland_and_Labrador_nearshore_waters.pdf Wroblewski, Joseph S. <https://research.library.mun.ca/view/creator_az/Wroblewski=3AJoseph_S=2E_=3A=3A.html> and Gosse, Karen R. <https://research.library.mun.ca/view/creator_az/Gosse=3AKaren_R=2E=3A=3A.html> (2004) Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters. ICES Journal of Marine Science, 61 (5). pp. 752-759. ISSN 1095-9289 cc_by_nc Article PeerReviewed 2004 ftmemorialuniv https://doi.org/10.1016/j.icesjms.2004.04.003 2023-09-03T06:44:41Z Adult cod (Gadus morhua) inhabiting continental shelf waters of the Northwest Atlantic typically display a countershaded colouration: a dark back gradating to a light underbelly. Some cod in Newfoundland and Labrador inshore waters have predominantly brown or red pigmentation. Cod inhabiting Gilbert Bay in Labrador often have golden-brown colouration, likely the result of an invertebrate diet rich in carotenoids, and are known in the vernacular as the “golden cod of Labrador”. To determine the stability of these variant colourations, we captured cod from Gilbert Bay, held them in a net pen and fed them a diet of fish. Over the 12-week experimental period, the variant coloured cod lost much of their brown or red pigmentation, and became countershaded. Because of its impermanence when cod switch from invertebrate to fish prey, variant colouration of cod can provide only provisional information about stock origin. Article in Journal/Newspaper atlantic cod Gadus morhua Newfoundland Northwest Atlantic Memorial University of Newfoundland: Research Repository Newfoundland Gilbert Bay ENVELOPE(-55.998,-55.998,52.633,52.633) ICES Journal of Marine Science 61 5 752 759 |
institution |
Open Polar |
collection |
Memorial University of Newfoundland: Research Repository |
op_collection_id |
ftmemorialuniv |
language |
English |
description |
Adult cod (Gadus morhua) inhabiting continental shelf waters of the Northwest Atlantic typically display a countershaded colouration: a dark back gradating to a light underbelly. Some cod in Newfoundland and Labrador inshore waters have predominantly brown or red pigmentation. Cod inhabiting Gilbert Bay in Labrador often have golden-brown colouration, likely the result of an invertebrate diet rich in carotenoids, and are known in the vernacular as the “golden cod of Labrador”. To determine the stability of these variant colourations, we captured cod from Gilbert Bay, held them in a net pen and fed them a diet of fish. Over the 12-week experimental period, the variant coloured cod lost much of their brown or red pigmentation, and became countershaded. Because of its impermanence when cod switch from invertebrate to fish prey, variant colouration of cod can provide only provisional information about stock origin. |
format |
Article in Journal/Newspaper |
author |
Wroblewski, Joseph S. Gosse, Karen R. |
spellingShingle |
Wroblewski, Joseph S. Gosse, Karen R. Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters |
author_facet |
Wroblewski, Joseph S. Gosse, Karen R. |
author_sort |
Wroblewski, Joseph S. |
title |
Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters |
title_short |
Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters |
title_full |
Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters |
title_fullStr |
Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters |
title_full_unstemmed |
Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters |
title_sort |
variant colourations of atlantic cod (gadus morhua) in newfoundland and labrador nearshore waters |
publisher |
Oxford University Press |
publishDate |
2004 |
url |
https://research.library.mun.ca/2015/ https://research.library.mun.ca/2015/1/Variant_colourations_of_Atlantic_cod_Gadus_morhua_in_Newfoundland_and_Labrador_nearshore_waters.pdf https://research.library.mun.ca/2015/3/Variant_colourations_of_Atlantic_cod_Gadus_morhua_in_Newfoundland_and_Labrador_nearshore_waters.pdf https://doi.org/10.1016/j.icesjms.2004.04.003 |
long_lat |
ENVELOPE(-55.998,-55.998,52.633,52.633) |
geographic |
Newfoundland Gilbert Bay |
geographic_facet |
Newfoundland Gilbert Bay |
genre |
atlantic cod Gadus morhua Newfoundland Northwest Atlantic |
genre_facet |
atlantic cod Gadus morhua Newfoundland Northwest Atlantic |
op_relation |
https://research.library.mun.ca/2015/1/Variant_colourations_of_Atlantic_cod_Gadus_morhua_in_Newfoundland_and_Labrador_nearshore_waters.pdf https://research.library.mun.ca/2015/3/Variant_colourations_of_Atlantic_cod_Gadus_morhua_in_Newfoundland_and_Labrador_nearshore_waters.pdf Wroblewski, Joseph S. <https://research.library.mun.ca/view/creator_az/Wroblewski=3AJoseph_S=2E_=3A=3A.html> and Gosse, Karen R. <https://research.library.mun.ca/view/creator_az/Gosse=3AKaren_R=2E=3A=3A.html> (2004) Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters. ICES Journal of Marine Science, 61 (5). pp. 752-759. ISSN 1095-9289 |
op_rights |
cc_by_nc |
op_doi |
https://doi.org/10.1016/j.icesjms.2004.04.003 |
container_title |
ICES Journal of Marine Science |
container_volume |
61 |
container_issue |
5 |
container_start_page |
752 |
op_container_end_page |
759 |
_version_ |
1778522298708393984 |