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JNAFS

01

G. R. Lilly and C. A. Gavaris

Department of Fisheries and Oceans, Fisheries Research Branch
Northwest Atlantic Fisheries Centre, P. O. Box 5667
St. John's, Newfoundland, Canada A1C 5X1

Source - Journal of Northwest Atlantic Fishery Science, Volume 3(2): 115-122
ISSN-0250-7408  

Abstract

Distribution and abundance of juvenile redfish, Sebastes sp., on Flemish Cap in the winters of 1978-82 were estimated from catches during research bottom-trawl surveys and from numbers of redfish in stomachs of cod caught during these surveys. Two modal groups in the redfish length frequencies (7-8 cm and 11-12 cm) were assumed to represent 1- and 2-year-old fish respectively, but ageing remains uncertain. Both size-groups were found primarily in depths of 200-300 m, with major concentrations on the southern slope of the bank.

The 1978 year-class, which appeared to be abundant in cod stomachs and moderately abundant in trawl catches in 1979, was not abundant in subsequent years, indicating that mortality of juvenile redfish can be high. The 1980 and 1981 year-classes, which appear to be stronger than the 1978 year-class on Flemish Cap, have been noted to be strong in other parts of the Northwest Atlantic, particularly on St. Pierre Bank, on the Scotian Shelf, and in the Gulf of St. Lawrence.


Language - English
Publisher - Northwest Atlantic Fisheries Organization (NAFO), Dartmouth, N.S., Canada
Publication Date - December 1982
Publication Type - Journal Article
Descriptors - Atlantic redfish, distribution, Flemish Cap, juveniles

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