Advice and Scenarios Database



Undulate ray (Raja undulata) in divisions 7.d and 7.e (English Channel)
StockCode
rju.27.7de
Assessment Year
2024
Stock Category
2
Purpose
Advice
Published
Stock Assessment Key
19173






Catch scenarios


Basis
Total landings
Fishing mortality F2026/FMSY
Stock size B2027/BMSY *
% B change **
% advice change***
corresponding landings
2026 2026 2027 2027 2027 2026
(t) (ratio) (ratio) (%) (%) (t)
ICES Basis Advice
Maximum sustainable yield (MSY) approach (15th percentile of predicted landings distribution under F = FMSY) 4637 0.59 1.71 -3.4 -3.8 3639
Other scenarios
FMSY 7402 1 1.57 -11.3 54 5809
F=F2024 1225 0.145 1.87 5.7 -75 961
F=0 0 0 1.92 8.8 -100 0
Landings = 10th percentile of predicted landings distribution under F=FMSY 4145 0.52 1.73 -2.1 -14 3253
Landings = 20th percentile of predicted landings distribution under F=FMSY 5068 0.65 1.69 -4.6 5.1 3977
Landings = 35th percentile of predicted landings distribution under F=FMSY 6230 0.82 1.63 -7.9 29 4889




Symbol Footnotes
* Percentage change of B2027/BMSY relative to B2026/BMSY. Biomass is at 01 January.
** Advice value for 2026 relative to the advice value for 2025 (4821 tonnes).
*** Based on the contribution of landings to removals in 2023