Advice and Scenarios Database



Undulate ray (Raja undulata) in divisions 7.d and 7.e (English Channel)
StockCode (Assessment Component)
rju.27.7de
Assessment Year
2022
Stock Category
2
Purpose
Advice
Published
Stock Assessment Key
17647
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.19754482.v1






Catch scenarios


Basis
Total catch
Fishing mortality F2024/FMSY
Stock size B2025/BMSY
% biomass change^
% advice change^^
2024 2024 2025 2025 2024
(t) (ratio) (ratio) (%) (%)
ICES Basis Advice
MSY approach (15th percentile of predicted catch distribution under F = FMSY) 4675 0.58 1.69 -2.9 83
Other scenarios
F = FMSY 7571 1 1.55 -10.9 197
F = F2021 = Fsq 673 0.077 1.8 3.4 -74
F = 0 0 0 1.9 9.2 -100
F = FMSY fractile 10 4164 0.51 1.71 -2.3 63
F = FMSY fractile 20 5123 0.64 1.67 -4 101
F = FMSY fractile 35 6339 0.81 1.61 -7.5 148




Symbol Footnotes
^ Biomass 2025 relative to biomass 2024.
^^ Advice value for 2024 relative to the advice value for each of the years 2021 and 2022 (2552 tonnes). Note that the previous advice included surviving discards.