Advice and Scenarios Database



Four-spot megrim (Lepidorhombus boscii) in divisions 8.c and 9.a (southern Bay of Biscay and Atlantic Iberian waters East)
StockCode (Assessment Component)
ldb.27.8c9a
Assessment Year
2025
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
19524
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.27202665.v1






Catch scenarios


Basis
Total catch
Projected landings
Projected discards
Fages2-4 total
Fages2-4 projected landings
Fages1-2 Projected discards
Spawning-stock biomass (SSB)
% SSB change*
% advice change^^
2026 2026 2026 2026 2026 2026 2027 2027 2026
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%)
ICES Basis Advice
EU MAP^: FMSY 2825 2657 168 0.176 0.119 0.043 13290 -14.6 3.6
F = MAP^ FMSY lower 1973 1856 116 0.119 0.08 0.029 14200 -8.8 3.7
F = MAP^ FMSY upper 4244 3987 257 0.28 0.189 0.068 11783 -24 3.6
Other scenarios
F = 0 0 0 0 0 0 0 16314 4.8 -100
FPA 6332 5939 393 0.46 0.31 0.112 9581 -38 132
SSB (2027) = BPA = MSYBtrigger 12873 11956 917 1.534 1.035 0.373 2932 -81 370
SSB (2027) = Blim 13516 12530 986 1.759 1.186 0.427 2321 -85 400
SSB2027 = SSB2026 697 656 41 0.04 0.027 0.01 15566 0 -74
F = F2025 1173 1104 69 0.069 0.046 0.017 15055 -3.3 -57
Catch advice 2026= catch advice 2025 2727 2565 162 0.169 0.114 0.041 13395 -13.9 0




Symbol Footnotes
* SSB 2027 relative to SSB 2026.
^ The EU multiannual plan (MAP; EU, 2019).
^^ Advice values for 2026 relative to the corresponding 2025 values (FMSY 2727 tonnes, FMSY lower 1903 tonnes, FMSY upper 4098 tonnes). All other scenarios are relative to the 2025 value for the FMSY scenario (2727 tonnes).