Aq Res State Trend
Unless otherwise indicated, the indicators were based on the Schaefer dynamic production stock assessment model.
Habitat Bio
Climatic Zone: Temperate. Bottom Type: Hard rocky bottom; Soft bottom clean sand; Soft bottom muddy or muddy-sand. Depth Zone: Coastal (0 m - 50 m); Shelf (50 m - 200 m); Slope - Upperslope (200 m - 500 m). Vertical Dist: Demersal/Benthic.
Bio Assess
Assessment year: 2013
The CECAF Working Groups have adopted the following Biological Reference Points (BRPs):
- Limit Reference points: BMSY and FMSY
- Target Reference Points: B0.1 and F0.1
Stock status is assigned based on current estimates of fishing mortality (Fcur) and biomass (Bcur) relative to these target and limit reference points (Bcur/BMSY, Fcur/FMSY, Bcur/B0.1, Fcur/F0.1). The results from the stock assessment of this stock are found under the “Biological state and trend section”.
Assess Models
Type: Biomass-aggregated
Schaefer dynamic production model
The series of total landings of Pagellus spp. estimated by the Working Group was used as the total catch data series for the stock. Two series of abundance indices were used: 1) CPUE series of the Moroccan deep-sea cephalopod trawlers and 2) the series of abundance indices from the surveys.
Results
The available data did not make it possible to obtain conclusive results for the assessment of Pagellus spp. However, the evolution of abundance indices of the scientific surveys indicates a decline which could be a sign of overexploitation of this stock, although an improvement in CPUEs of the national cephalopod trawlers was noted from 2011.
Sci Advice
Considering that the besugue is taken as bycatch in several fisheries, it is important to monitor the application of the regulations in force in the different fisheries to ensure a stock recovery.
Sources
FAO. 2016a. Fishery Committee for the Eastern Central Atlantic, Report of the seventh session of the Scientific Sub-Committee, Tenerife, Spain, 14–16 October 2015 / Comité des pêches pour l’Atlantique Centre-Est Rapport de la septième session du Sous-Comité scientifique. Tenerife, Espagne 14-16 octobre 2015. FAO Fisheries and Aquaculture Report / FAO Rapport sur les pêches et l’aquaculture No. 1128. Rome, Italy.
http://www.fao.org/3/I5301Bi/i5301bi.pdfFAO. 2016b. Report of the FAO/CECAF Working Group on the Assessment of Demersal Resources – Subgroup North. Fuengirola, Spain, 18–27 November 2013. / Rapport du Groupe de travail FAO/COPACE sur l’évaluation des ressources démersales – Sousgroupe Nord. Fuengirola, Espagne, 18-27 novembre 2013. CECAF/ECAF Series/COPACE/PACE Séries. No. 15/77. Rome, Italy/Italie.
http://www.fao.org/3/a-i5114b.pdf