Advice and Scenarios Database



Megrim (Lepidorhombus spp.) in divisions 4.a and 6.a (northern North Sea, West of Scotland)
StockCode
lez.27.4a6a
Assessment Year
2023
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
18227
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.21840918.v1






Catch scenarios


Basis
Total catch
Projected landings
Projected discards
Fishing mortality F/Fmsy
Stock size B/Bmsy
% B change*
% advice change^
2024 2024 2024 2024 2025 2025 2024
(t) (t) (t) (ratio) (ratio) (%) (%)
ICES Basis Advice
MSY approach: F= FMSY 7900 7510 390 1 1.38 -17.6 9.7
Other scenarios
EU MAP^^: FMSY 7900 7510 390 1 1.38 -17.6 9.7
EU MAP^^ FMSY lower 6150 5847 303 0.78 1.47 -12 -14.6
EU MAP^^ FMSYupper 7900 7510 390 1 1.38 -17.6 9.7
F=0 0 0 0 0 1.8 7.8 -100
B2025=Blim 29800 28331 1469 3.8 0.3 -82 314
B2025=Bpa=MSYBtrigger 24850 23625 1225 3.14 0.5 -70 245
B2025=B2024 2300 2187 113 0.29 1.67 0 -68
F=F2023 2550 2424 126 0.32 1.66 -0.78 -65




Symbol Footnotes
* Biomass 2025 relative to biomass 2024
** Advice value for 2024 relative to the advice value for 2023 (7200tonnes)
*** EU multiannual plan (MAP) for the Western Waters (EU, 2019)