Advice and Scenarios Database



Whiting (Merlangius merlangus) in Subarea 4 and Division 7.d (North Sea and eastern English Channel)
StockCode
whg.27.47d
Assessment Year
2024
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
18694
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.27211443.v1






Catch scenarios


Basis
Total catch
Total projected landings
Total projected discards*
Total IBC*
Human Consumption catch
Total F**
F(projected landings)
F(projected discards)
F(IBC)***
SSB
% SSB change^
% TAC change^^
% Advice change^^^
2025 2025 2025 2025 2025 2025 2025 2025 2025 2026 2026 2026 2026
(t) (t) (t) (t) (t) (ratio) (ratio) (ratio) (ratio) (t) (%) (%) (%)
ICES Basis Advice
MSY approach: FMSY 188148 131066 55502 1580 186569 0.68 0.44 0.24 0.0059 238414 -35 97 68
Other scenarios
FMSY upper 188148 131066 55502 1580 186569 0.68 0.44 0.24 0.0059 238414 -35 97 68
FMSY lower 139425 97881 39788 1756 137669 0.46 0.29 0.161 0.0059 274335 -25 46 25
F = 0 (IBC only) 2214 0 0 2214 0 0.0059 0 0 0.0059 376530 3.2 -98 -98
F = F2024 29540 19909 7511 2120 27421 0.083 0.05 0.027 0.0059 353293 -3.2 -69 -74
0.75 × F2024† 22878 15073 5664 2140 20738 0.064 0.037 0.02 0.0059 357974 -1.89 -76 -80
1.25 × F2024† 36096 24658 9339 2099 33997 0.102 0.062 0.034 0.0059 348675 -4.4 -62 -68
Fpa 188148 131066 55502 1580 186569 0.68 0.44 0.24 0.0059 238414 -35 97 68
Flim 267889 182627 83997 1264 266625 1.18 0.76 0.42 0.0059 179991 -51 180 139
SSB (2025) = Bpa = MSY Btrigger 286684 194143 91357 1184 285499 1.34 0.86 0.47 0.0059 167419 -54 200 156
SSB (2025) = Blim 377845 246754 130293 798 377047 2.62 1.69 0.92 0.0059 119585 -67 295 238




Symbol Footnotes
* The split of catch between landings, discards, and industrial bycatch (IBC) in 2025 was done using recent (2021–2023) partial age-dependent fishing mortalities as a forecasting assumption.
** Total F is calculated as the sum of partial fishing mortalities.
*** F (IBC) is assumed to be constant in all scenarios at status quo value.
† Multiplier only applied to F (discards) and F (landings), with F (IBC) constant.
^ SSB 2026 relative to SSB 2025.
^^ Total catch 2025 relative to the TAC value 2024 in Subarea 4 and Division 7.d (95 596 tonnes; EU–Norway–UK, 2023)
^^^ Total catch 2025 relative to the advice value 2024 (111 953 tonnes).