Advice and Scenarios Database



Whiting (Merlangius merlangus) in Division 6.a (West of Scotland)
StockCode
whg.27.6a
Assessment Year
2023
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
18104






Catch scenarios


Basis
Total catch
Projected landings
Projected discards
Ftotal
Fprojected landings
Fprojected discards
SSB
% SSB change *
% advice change**
2024 2024 2024 2024 2024 2024 2025 2025 2025
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%)
ICES Basis Advice
MSY approach: FMSY × SSB (2024) /MSY Btrigger 3879 2612 1267 0.195 0.064 0.131 19777 -16.9 -6.6
Other scenarios
MSY approach: FMSY lower × SSB (2024) /MSY Btrigger 3245 2185 1060 0.16 0.053 0.107 20391 -14.3 -22
MSY approach: FMSY upper × SSB (2024) /MSY Btrigger 3879 2612 1267 0.195 0.064 0.131 19777 -16.9 -6.6
F=0 0 0 0 0 0 0 23671 -0.52 -100
F= FMSY 4158 2799 1359 0.21 0.069 0.141 19512 -18 0.07
F= FMSY lower 3482 2345 1137 0.173 0.057 0.116 20159 -15.3 -16.2
F= Fpa 4158 2799 1359 0.21 0.069 0.141 19512 -18 0.07
F= Flim 5878 3950 1928 0.31 0.102 0.21 17923 -25 41
SSB (2025)=Blim 6582 4421 2161 0.35 0.116 0.24 17286 -27 58
SSB (2025)=Bpa=MSYBtrigger ***
SSB (2025)=SSB (2024)***
F=F2022 361 243 118 0.0166 0.005 0.012 23292 -2.1 -91




Symbol Footnotes
* SSB 2025 relative to SSB 2024.
** Advice value for 2024 relative to the corresponding 2023 value (4155 tonnes).
*** These options were left blank because they cannot be achieved in 2025, even with zero catch in 2024.