Short note on abundance of SEBASTES Mentella in the 0-group and youngfish surveys as indicator of recruitment overfishing

• Main Author: Nedreaas, Kjell Harald
• Format: Conference Object
• Language: English
• Published: 1995
• Subjects: VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Catch: 925; VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921; Barents Sea; Bergen; Sebastes mentella
• Online Access: http://hdl.handle.net/11250/107469

Precision and relevance of pre-recruit studies for fishery management related to fish stocks in the Barents Sea and adjacent waters. Proceeding of the sixth IMR-PINRO Symposium Bergen, 14-17 June 1994 Abundance indices of 0-group Sebastes mentella from the international 0-group survey in the Barents Sea showed a sudden decrease from 1990 to 1991 to a low level which remained for three years. The strength of these weak yearclasses has been confirmed in later youngfish surveys, and is supposed to be a result of a historic low spawning stock. A big directed fishery in former years, and huge by-catches and discards of small Sebastes mentella in other fisheries have due to the late maturity of this species not until now resulted in a serious reduction of the spawning stock, A directed trawl fishery in more recent years on mature fish on new fishing grounds has probably speeded-up this negative development.