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

• Main Author: Hylen, Arvid
• Format: Report
• Language: English
• Published: ICES 1997
• Subjects: cod; torsk; haddock; hyse; acoustics; akustikk; stock assessment; bestandsberegning; VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Catch: 925; VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923; VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452; Arctic; Barents Sea; Arctic cod
• Online Access: http://hdl.handle.net/11250/105685

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.