Advice and Scenarios Database



Horse mackerel (Trachurus trachurus) in divisions 4.b, 4.c, and 7.d (southern and central North Sea, eastern English Channel)
StockCode (Assessment Component)
hom.27.4bc7d
Assessment Year
2025
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
21136
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.27202656






Catch scenarios


Basis
Total catch
F
SSB
SSB
% SSB change*
% TAC change**
% advice change***
2026 2026 2026 2027 2027 2026 2026
(t) (ratio) (t) (t) (%) (%) (%)
ICES Basis Advice
MSY approach: F = 0 0 0 66933 66025 -1.35 -100 0
Other scenarios
F=Fmsy = Fpa^
F=F2025 876 0.025 66744 65165 -2.4 -10.7 0
SSB2027=Bpa, Blim, or SSB2026 ^^
Catch2026 = catch2025 - 20% 776 0.022 66765 65263 -2.2 -22
Catch2026 = catch2025 970 0.028 66723 65073 -2.5 0
Catch2026 = catch2025 + 25% 1213 0.035 66670 64836 -2.8 22




Symbol Footnotes
* SSB 2027 relative to SSB 2026.
** Catch scenario for 2026 relative to the TAC in 2025 (970 t).
*** Advice value 2026 relative to advice value 2025 (0 t).
^ FMSY and Fpa not defined.
^^ Bpa, Blim, and SSB2026 cannot be achieved in 2027, even with zero catches.