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JNAFS

01

J. E. Cartes and M. Demestre

Institut de Ciències del Mar. (C.S.I.C.), Passeig Marìtim de la Barceloneta, 37-49 08003 Barcelona, Spain

Source - Journal of Northwest Atlantic Fishery Science, Volume 31: 355-361
ISSN-0250-6408

Abstract 

The red shrimp Aristeus antennatus (Decapoda: Aristeidae) is a dominant deep-water species in the mid-bathyal depths of the Catalano-Balearic Basin (western Mediterranean), where its bathymetric distribution extends to 2261 m. It is the main target species in deep-sea fisheries and it is captured by trawlers at depths between 400 and 800 m. In the northwestern Mediterranean annual catches of A. antennatus have risen to 200-300 tons and it is a species of a high commercial value. This study used a dataset of A. antennatus size-frequencies based on samplings performed in 1988 at two bathymetric zones from the Catalano-Balearic Basin: 1) a monthly sampling performed at mid-slope depths (450-800 m) and 2) a sampling performed at the lower slope (between 862-2 261 m) in 3 successive surveys from end of June, July and October. Two methods were used to estimate production and production/biomass of A. antennatus: 1) the weight-specific growth rate model based on growth parameters K and Loo deduced from the Von Bertalanffy model and, 2) the cohort-based (increment summation) method. The results obtained at different periods and depth ranges were compared between them and discussed in the context of the biological cycle of this species.

Language - English
Publisher - Northwest Atlantic Fisheries Organization (NAFO), Dartmouth, N.S., Canada
Publication Date - 2003
Publication Type - Journal Article
Descriptors - Aristeus, depth, deep-water, growth, length, Mediterranean, shrimp

Citation
Posted in: Volume 31 - 2003
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