Research Document 1998/23
Age composition, growth and maturity of cod in inshore waters of 3Ps as determined from sentinel surveys
By G.R. Lilly, J. Brattey, and M.B. Davis
Abstract
Samples of cod (Gadus morhua) caught during sentinel surveys in Subdivision 3Ps during 1995-1997 provided information on age compositions, lengths-at-age and age at 50% maturity. Age compositions and lengths-at-age varied by gear, season, year and possibly unit area. There is a possibility that cod caught in Placentia Bay (3Psc) differ somewhat in biological characteristics from cod to the west of the Burin Peninsula (3Psa and 3Psb). Comparisons between cod sampled in the inshore during sentinel surveys and cod sampled in the offshore during research vessel bottom-trawl surveys are difficult because of differences in timing and the paucity of young fish in sentinel catches, but any differences appear to be small.
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