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
ldb.27.8c9a
Assessment Year
2024
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
19081
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.25019318.v1






Catch scenarios


Basis
Total catch (2025)
Projected landings (2025)
Projected discards# (2025)
Fages2–4 Total
Fages2–4 Projected landings
Fages1–2 Projected discards
SSB
SSB change*
Advice change^^
2025 2025 2025 2025 2025 2025 2026 2026 2025
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%)
ICES Basis Advice
EU MAP^: FMSY 2727 2486 241 0.176 0.109 0.047 13098 -10.9 16
F = MAP^ FMSY lower 1903 1737 167 0.119 0.074 0.032 13977 -5 16
F = MAP^ FMSY upper 4098 3729 369 0.28 0.173 0.075 11641 -21 15.9
Other scenarios
F = 0 0 0 0 0 0 0 16018 8.9 -100
Fpa 6121 5554 567 0.46 0.28 0.123 9508 -35 160
Flim 7059 6395 664 0.56 0.35 0.149 8527 -42 200
SSB (2026) = Bpa = MSYBtrigger 12596 11244 1351 1.56 0.97 0.42 2932 -80 436
SSB (2026) = Blim 13240 11784 1456 1.79 1.11 0.48 2321 -84 463
SSB2026 = SSB2025 1221 1115 106 0.074 0.046 0.02 14707 0 -48
F = F2024 1262 1152 110 0.077 0.048 0.021 14663 -0.29 -46
Catch advice (2025) = Catch advice (2024) 2351 2144 207 0.15 0.093 0.04 13499 -8.2 0




Symbol Footnotes
* SSB 2026 relative to SSB 2025.
# BMS landings included.
^ The EU multiannual plan (MAP; EU, 2019).
^^ Advice values for 2025 relative to the corresponding 2024 values (FMSY 2351 tonnes, FMSY lower 1640 tonnes, FMSY upper 3537 tonnes). All other scenarios are relative to the 2024 value for the FMSY scenario (2351 tonnes).