Advice and Scenarios Database



Megrim (Lepidorhombus spp.) in divisions 4.a and 6.a (northern North Sea, West of Scotland)
StockCode (Assessment Component)
lez.27.4a6a
Assessment Year
2025
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
19856
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.27202671.v1






Catch scenarios


Basis
Total catch
Projected landings
Projected discard
Fishing mortality F/FMSY
Stock size B/BMSY
% B change*
% advice change^
2026 2026 2026 2026 2027 2027 2026
(t) (t) (t) (ratio) (ratio) (%) (%)
ICES Basis Advice
MSY approach: F=FMSY 8050 7663 387 1 1.39 -10.6 6.6
Other scenarios
EU MAP^^: FMSY 8050 7663 387 1 1.39 -10.6 6.6
EU MAP^^ FMSY lower 6250 5949 301 0.77 1.48 -4.4 -17.2
EU MAP^^ FMSYupper 8050 7663 387 1 1.39 -10.6 6.6
F=0 0 0 0 0 1.82 17.1 -100
B2027=Blim 29850 28413 1437 3.7 0.3 -80 300
B2027=Bpa=MSYBtrigger 25050 23844 1206 3.1 0.5 -68 230
B2027=B2026 5050 4807 243 0.62 1.55 0 -33
F=F2025 1850 1761 89 0.23 1.71 10.5 -75




Symbol Footnotes
* Biomass 2027 relative to biomass 2026.
^ Advice value for 2026 relative to the advice value for 2025 (7550tonnes).
^^ EU multiannual plan (MAP) for the Western Waters (EU, 2019).