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Research Document - 2000/090

An age-disaggregated index from the sentinel program for cod in 2J3KL.

By Stansbury, D.E.

Abstract

An age disaggregate index of abundance was derived from both the gillnet and linetrawl sectors of the sentinel survey in NAFO Divisions 2J3KL. A generalized linear model was applied to the catch and effort data at age for each gear and survey method with an assumed Poisson distribution for catches. Through the use of different gears which have very specific selectivities, it is possible to track year-classess through the five years the sentinel program has been operational.

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