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.25019720.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 2025 2025
(t) (t) (t) (t) (t) (ratio) (ratio) (ratio) (ratio) (t) (%) (%) (%)
ICES Basis Advice
MSY approach: FMSY 237008 169064 66516 1428 235580 0.68 0.44 0.24 0.0059 191923 -47 148 85
Other scenarios
FMSY upper 237008 169064 66516 1428 235580 0.68 0.44 0.24 0.0059 191923 -47 148 85
FMSY lower 160599 114063 44856 1680 158918 0.46 0.29 0.161 0.0059 251539 -31 68 25
F = 0 (IBC only) 2202 0 0 2202 0 0.0059 0 0 0.0059 375191 3.3 -98 -98
F = F2024 29660 19810 7738 2112 27549 0.083 0.05 0.027 0.0059 353699 -2.7 -69 -77
0.75 × F2024† 22970 14994 5842 2134 20836 0.064 0.037 0.02 0.0059 358920 -1.22 -76 -82
1.25 × F2024† 36358 24631 9637 2090 34268 0.102 0.062 0.034 0.0059 348474 -4.1 -62 -72
Fpa 237008 169064 66516 1428 235580 0.68 0.44 0.24 0.0059 191923 -47 148 85
Flim 410666 294067 115743 856 409810 1.18 0.76 0.42 0.0059 56432 -84 330 220
SSB (2025) = Bpa = MSY Btrigger 268275 191571 75379 1325 266949 0.77 0.49 0.27 0.0059 167419 -54 181 109
SSB (2025) = Blim 329547 235676 92748 1123 328424 0.95 0.61 0.33 0.0059 119585 -67 245 157




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 part of the 7.b-k TAC allocated to Division 7.d (95 596 tonnes; EU–Norway–UK, 2023)
^^^ Total catch 2025 relative to the advice value 2024 (128 290 tonnes).