Acoustic abundance estimate of 0-group north-east Arctic cod and haddock

Abstract

The abundance of the 1991-1994-year classes of north-east Arctic cod and haddock at the age of six month have been estimated on the basis of Norwegian acoustic data from the International 0-group fish survey in the Barents Sea and adjacent waters. These results have been analysed in relation to the abundance of the respective year classes at ages 1-3, computed by VPA with the XSA tuning procedure based on catch-at-age data including catch and cannibalism/-predation by cod. This study indicates a reasonable agreement of the 0-group fish abundance and the abundance of age group 1-3 in the pre-recruit phase.