Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters
Abstract 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 inhabitin...
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Oxford University Press (OUP)
2004
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Online Access: | http://dx.doi.org/10.1016/j.icesjms.2004.04.003 http://academic.oup.com/icesjms/article-pdf/61/5/752/29121824/61-5-752.pdf |
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croxfordunivpr:10.1016/j.icesjms.2004.04.003 2023-12-31T10:04:35+01:00 Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters Gosse, Karen R. Wroblewski, Joseph S. 2004 http://dx.doi.org/10.1016/j.icesjms.2004.04.003 http://academic.oup.com/icesjms/article-pdf/61/5/752/29121824/61-5-752.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 61, issue 5, page 752-759 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2004 croxfordunivpr https://doi.org/10.1016/j.icesjms.2004.04.003 2023-12-06T08:55:44Z Abstract 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 Oxford University Press (via Crossref) ICES Journal of Marine Science 61 5 752 759 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Gosse, Karen R. Wroblewski, Joseph S. Variant colourations of Atlantic cod (Gadus morhua) in Newfoundland and Labrador nearshore waters |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract 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 |
Gosse, Karen R. Wroblewski, Joseph S. |
author_facet |
Gosse, Karen R. Wroblewski, Joseph S. |
author_sort |
Gosse, Karen R. |
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 (OUP) |
publishDate |
2004 |
url |
http://dx.doi.org/10.1016/j.icesjms.2004.04.003 http://academic.oup.com/icesjms/article-pdf/61/5/752/29121824/61-5-752.pdf |
genre |
atlantic cod Gadus morhua Newfoundland Northwest Atlantic |
genre_facet |
atlantic cod Gadus morhua Newfoundland Northwest Atlantic |
op_source |
ICES Journal of Marine Science volume 61, issue 5, page 752-759 ISSN 1095-9289 1054-3139 |
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_ |
1786834781842964480 |