Advice and Scenarios Database



Whiting (Merlangius merlangus) in Subarea 4 and Division 7.d (North Sea and eastern English Channel)
StockCode (Assessment Component)
whg.27.47d
Assessment Year
2025
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
19484
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.27202941.v1






Catch scenarios


Basis
Total catch
Projected landings*
Projected discards*
Projected industrial bycatch (IBC)*
Human Consumption catch
Ftotal (ages 2–5)**
Fprojected landings (ages 2–5)
Fprojected discards (ages 2–5)
Fprojected IBC (ages 2–5) **
SSB
% SSB change^
% TAC change^^
% advice change^^^
2026 2026 2026 2026 2026 2026 2026 2026 2026 2027 2027 2026 2026
(t) (t) (t) (t) (t) (ratio) (ratio) (ratio) (ratio) (t) (%) (%) (%)
ICES Basis Advice
Maximum sustainable yield (MSY) approach: FMSY 198609 121538 75495 1576 197033 0.68 0.36 0.32 0.0054 286198 -31 42 5.6
Other scenarios
FMSY upper 198609 121538 75495 1576 197033 0.68 0.36 0.32 0.0054 286198 -31 42 5.6
FMSY lower 146669 90964 53946 1759 144910 0.46 0.24 0.21 0.0054 323685 -22 5.2 -22
F = 0 (industrial bycatch [IBC] only) 2242 0 0 2242 0 0.0054 0 0 0.0054 430525 4.2 -98 -99
F = F2025 33503 20286 11088 2130 31374 0.09 0.045 0.04 0.0054 403077 -2.4 -76 -82
0.75 × F2025*** 25875 15364 8358 2153 23721 0.069 0.034 0.03 0.0054 408306 -1.17 -81 -86
1.25 × F2025*** 40962 25082 13774 2106 38856 0.111 0.056 0.05 0.0054 397949 -3.7 -71 -78
FPA 198609 121538 75495 1576 197033 0.68 0.36 0.32 0.0054 286198 -31 42 5.6
SSB (2027) = BPA= MSYBtrigger 385494 215820 168808 866 384628 2.3 1.19 1.06 0.0054 167419 -59 176 105
SSB (2027) = Blim 485115 244498 240124 492 484622 4.2 2.22 1.97 0.0054 119585 -71 248 158




Symbol Footnotes
* The split of catch between landings, discards, and industrial bycatch (IBC) in 2026 was done using partial age-dependent fishing mortalities as a forecasting assumption, which are based on recent values (2022–2024) scaled according to the scenario while keeping FIBC constant at the interim value.
** FIBC is assumed to be constant in all scenarios at the interim year value (using recent [2022–2024] partial age-dependent fishing mortalities scaled to Fsq).
*** Multiplier only applied to F (discards) and F (landings), with FIBC constant.
^ SSB 2027 relative to SSB 2026.
^^ Total advised catch 2026 relative to the TAC value 2025 in Subarea 4 and part of the Division 7.b-k TAC allocated to Division 7.d (139 425 tonnes; Norway–UK–EU, 2024).
^^^ Total advised catch 2026 relative to the advice value 2025 (188 148 tonnes).