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. 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)
Results
LCA/Yield-per-Recruit (Fcur/F0.1): The model gives a high exploitation rate due to the exploitation of juveniles.
Sci Advice
The working group recommends reducing the fishing mortality of the coastal trawling fleet targeting juveniles through strengthening compliance with fishing regulations.
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.
to turn layers on and off 