Comparing growth and maturity of sympatric Atlantic ( Gadus morhua ) and Greenland ( Gadus ogac ) cod in coastal Newfoundland
Growth and maturity of two sympatric gadids were examined from 48 Atlantic (Gadus morhua L., 1758) and 42 Greenland (Gadus ogac Richardson, 1836) cod ranging from 17 to 74 cm in length collected from an inshore area of Trinity Bay, Newfoundland, Canada, during 2009 and 2010. Ages estimated from otol...
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crcansciencepubl:10.1139/cjz-2013-0079 2023-12-17T10:30:22+01:00 Comparing growth and maturity of sympatric Atlantic ( Gadus morhua ) and Greenland ( Gadus ogac ) cod in coastal Newfoundland Knickle, D.C. Rose, G.A. 2013 http://dx.doi.org/10.1139/cjz-2013-0079 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2013-0079 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2013-0079 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 91, issue 9, page 672-677 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2013 crcansciencepubl https://doi.org/10.1139/cjz-2013-0079 2023-11-19T13:39:32Z Growth and maturity of two sympatric gadids were examined from 48 Atlantic (Gadus morhua L., 1758) and 42 Greenland (Gadus ogac Richardson, 1836) cod ranging from 17 to 74 cm in length collected from an inshore area of Trinity Bay, Newfoundland, Canada, during 2009 and 2010. Ages estimated from otolith readings ranged from 2 to 7 for both species. Age and size at 50% maturity differed between species, being 2.3 years and 28.2 cm for G. ogac and 4.6 years and 48.8 cm for G. morhua. von Bertalanffy growth models did not differ between species with parameters L ∞ = 91 cm, k = 0.16 year −1 , t 0 = –0.02 years for G. ogac and L ∞ = 112 cm, k = 0.13 year −1 , t 0 = 0.18 years for G. morhua. Length (L) – mass (W) relationships differed; W = 0.000005 kg·cm − b × L 3.17 for G. ogac and W = 0.000011 kg·cm − b × L 2.91 for G. morhua suggested slightly positive and negative allometric growth, respectively. For G. morhua, growth curves, length–mass relationships, and maturity rates did not differ between fish collected during this and earlier studies. Differences in maturity schedules and growth may decrease resource competition and help facilitate coexistence of these species. Article in Journal/Newspaper Gadus morhua Gadus ogac Greenland Newfoundland Canadian Science Publishing (via Crossref) Canada Greenland Canadian Journal of Zoology 91 9 672 677 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Knickle, D.C. Rose, G.A. Comparing growth and maturity of sympatric Atlantic ( Gadus morhua ) and Greenland ( Gadus ogac ) cod in coastal Newfoundland |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Growth and maturity of two sympatric gadids were examined from 48 Atlantic (Gadus morhua L., 1758) and 42 Greenland (Gadus ogac Richardson, 1836) cod ranging from 17 to 74 cm in length collected from an inshore area of Trinity Bay, Newfoundland, Canada, during 2009 and 2010. Ages estimated from otolith readings ranged from 2 to 7 for both species. Age and size at 50% maturity differed between species, being 2.3 years and 28.2 cm for G. ogac and 4.6 years and 48.8 cm for G. morhua. von Bertalanffy growth models did not differ between species with parameters L ∞ = 91 cm, k = 0.16 year −1 , t 0 = –0.02 years for G. ogac and L ∞ = 112 cm, k = 0.13 year −1 , t 0 = 0.18 years for G. morhua. Length (L) – mass (W) relationships differed; W = 0.000005 kg·cm − b × L 3.17 for G. ogac and W = 0.000011 kg·cm − b × L 2.91 for G. morhua suggested slightly positive and negative allometric growth, respectively. For G. morhua, growth curves, length–mass relationships, and maturity rates did not differ between fish collected during this and earlier studies. Differences in maturity schedules and growth may decrease resource competition and help facilitate coexistence of these species. |
format |
Article in Journal/Newspaper |
author |
Knickle, D.C. Rose, G.A. |
author_facet |
Knickle, D.C. Rose, G.A. |
author_sort |
Knickle, D.C. |
title |
Comparing growth and maturity of sympatric Atlantic ( Gadus morhua ) and Greenland ( Gadus ogac ) cod in coastal Newfoundland |
title_short |
Comparing growth and maturity of sympatric Atlantic ( Gadus morhua ) and Greenland ( Gadus ogac ) cod in coastal Newfoundland |
title_full |
Comparing growth and maturity of sympatric Atlantic ( Gadus morhua ) and Greenland ( Gadus ogac ) cod in coastal Newfoundland |
title_fullStr |
Comparing growth and maturity of sympatric Atlantic ( Gadus morhua ) and Greenland ( Gadus ogac ) cod in coastal Newfoundland |
title_full_unstemmed |
Comparing growth and maturity of sympatric Atlantic ( Gadus morhua ) and Greenland ( Gadus ogac ) cod in coastal Newfoundland |
title_sort |
comparing growth and maturity of sympatric atlantic ( gadus morhua ) and greenland ( gadus ogac ) cod in coastal newfoundland |
publisher |
Canadian Science Publishing |
publishDate |
2013 |
url |
http://dx.doi.org/10.1139/cjz-2013-0079 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2013-0079 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2013-0079 |
geographic |
Canada Greenland |
geographic_facet |
Canada Greenland |
genre |
Gadus morhua Gadus ogac Greenland Newfoundland |
genre_facet |
Gadus morhua Gadus ogac Greenland Newfoundland |
op_source |
Canadian Journal of Zoology volume 91, issue 9, page 672-677 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjz-2013-0079 |
container_title |
Canadian Journal of Zoology |
container_volume |
91 |
container_issue |
9 |
container_start_page |
672 |
op_container_end_page |
677 |
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1785583323708391424 |