Advice and Scenarios Database



Turbot (Scophthalmus maximus) in Subarea 4 (North Sea)
StockCode (Assessment Component)
tur.27.4
Assessment Year
2025
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
19572






Catch scenarios


Basis
Total catch*
Projected landings
Projected discards**
Fprojected landings (ages 2–6)
Spawing-stock biomass (SSB)
% SSB change^
% advice change^^
% total allowable catch (TAC) change^^^
2026 2026 2026 2026 2027 2027 2026 2026
(t) (t) (t) (ratio) (t) (%) (%) (%)
ICES Basis Advice
Maximum sustainable yield (MSY) approach: FMSY 3292 3098 195 0.386 6426 -5.9 36 36
Other scenarios
FMSY upper 3292 3098 195 0.386 6426 -5.9 36 36
FMSY lower 2465 2319 146 0.28 7189 5.2 1.61 1.61
F = 0 0 0 0 0 9521 39 -100 -100
FPA 3292 3098 195 0.386 6426 -5.9 36 36
F = F2025 2313 2176 137 0.26 7331 7.3 -4.7 -4.7
SSB (2027) = Blim 6464 6082 382 0.96 3631 -47 166 166
SSB (2027) = BPA = MSYBtrigger 4823 4538 285 0.63 5046 -26 99 99
Rollover advice 2426 2283 143 0.27 7225 5.8 0 0




Symbol Footnotes
* (Projected landings)/(1–average discard rate); average discard rate by weight 2022–2024 = 5.9%.
** Including below minimum size (BMS) landings. Assuming average discard rate by weight 2022–2024=5.9%.
^ SSB 2027 relative to SSB 2026.
^^ Advice value for 2026 relative to the advice value for 2025 (2 426 tonnes).
^^^ Total advised catch in 2026 relative to the EU–UK agreed catch limit approach for 2025 (2 426 tonnes). This limit reflects the sum of the EU–UK agreed TACs in 2025 (2 410 tonnes), divided by 0.9933 to account for a 0.67% deduction for third-country catches, following the method for projecting third-country catches (EU–UK Joint Committee, 2023).