Productional characteristics of redfish Sebastes mentella (Scorpaeniformes, Sebastidae) in the Barents Sea and adjacent waters

Autor: O. V. Karamushko, E. V. Raskhozheva
Rok vydání: 2009
Předmět:
Zdroj: Journal of Ichthyology. 49:759-763
ISSN: 1555-6425
0032-9452
DOI: 10.1134/s0032945209090069
Popis: The annual production of redfish Sebastes mentella of the Norway-Barents Sea population is estimated. The main contribution to the formation of production is made by specimens of the 10–15 year age and in the period of high abundance of recruitment the main contribution is by immature specimens of the 1–8 year age. The generative production of redfish is, on average, by four times lower than the somatic production. The ratio between generative and somatic production is estimated in relation to the population structure. The value of P/B coefficient is in reverse relationship with the individual age and weight. As the part of the junior age groups in the population decreases P/B coefficient increases, and with the increase of the individual average weight in the population it decreases. The relationship between the specific rate of weight growth of redfish and the value of P/B coefficient is shown. The average value of P/B coefficient for the Norway-Barents Sea population of redfish is 0.3.
Databáze: OpenAIRE
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