Aq Res State Trend
Fcur/F0.1: Ratio between the observed fishing mortality coefficient during the last year of the series and F0.1.
Fcur/FMSY: Ratio between the observed fishing mortality coefficient during the last year of the series and the coefficient that would give a maximum sustainable yield over the long term.
Bcur/B0.1: Ratio between the estimated biomass for the last year and the biomass corresponding to F0.1.
Bcur/BMSY: Ratio between the estimated biomass for the last year and the biomass corresponding to FMSY.
Habitat Bio
Climatic Zone: Temperate. Bottom Type: Soft bottom clean sand; Soft bottom muddy or muddy-sand. Depth Zone: Coastal (0 m - 50 m); Shelf (50 m - 200 m); Slope (200 m - 1000 m). Horizontal Dist: Neritic; Oceanic. Vertical Dist: Demersal/Benthic.
Bio Assess
Assessment year: 2021
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: Size-structured
Length Cohort Analysis (LCA)
Yield per Recruit Analysis (Y/R)
Sci Advice
The Group recommends a reduction in the current catch to the level of 2018 (4 900 tonnes).
Sources
FAO. 2022. Meeting summary of the FAO/CECAF Working Group on the Assessment of Demersal resources – Subgroup North. Nouakchott, Mauritania, 5-9 December 2022. CECAF/SSCIX/2022/4c.
https://www.fao.org/3/cc3290b/cc3290b.pdf Bibliography
All references to figures, tables and bibliography in the text are found within the source of information.
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