NAFO posted on December 31, 1992 15:54
J. Paz and M. G. Larrañeta
Instituto Español de Oceanografia, Centro Costero de Vigo
Cabo Estay -Canido, Apartado 1.552, 36080, Vigo, Spain
Source - Journal of Northwest Atlantic Fishery Science, Volume 14: 129-134
ISSN-0250-6408
Paz, J. and Larraneta, M.G. 1992. Cod Year-class Variations and Abundance of Other Commercial Fish in NAFO Divisions 3NO. J. Northw. Atl. Fish. Sci. 14: 129-134. https://doi.org/10.2960/J.v14.a10
Abstract
Possible biological relationships of cod (Gadus morhua) with other important commercial fishes are explored. Cod year-class variations are compared with variations of yellowtail flounder and American plaice spawning biomass, mackerel age 1 + group abundance, and redfish densities. The adult fish biomass of these species are considered as an index of their egg and larval abundances. Possible competitive and predator-prey relationships between the 0-age groups and young individuals of cod and these species are examined through correlation analyses. No significant relationships between cod and redfish and yellowtail flounder were found. It seems that mackerel is a predator on cod larvae. A positive high correlation between spawning American plaice biomass and cod year-class strength was found. High American plaice spawning biomass may promote high cod recruitment through a predator-prey interaction. Alternatively, both species may respond similarly to an environmental signal.
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Language - English
Publisher - Northwest Atlantic Fisheries Organization (NAFO), Dartmouth, N.S., Canada
Publication Date - December 1992
Publication Type - Journal Article
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Citation: Paz, J. and Larraneta, M.G. 1992. Cod Year-class Variations and Abundance of Other Commercial Fish in NAFO Divisions 3NO. J. Northw. Atl. Fish. Sci. 14: 129-134. https://doi.org/10.2960/J.v14.a10