Advice and Scenarios Database



Whiting (Merlangius merlangus) in Division 7.a (Irish Sea)
StockCode
whg.27.7a
Assessment Year
2023
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
17986
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.21864330.v1






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 2024 2024 2023
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%)
ICES Basis Advice
MSY approach: F = 0 0 0 0 0 0 0 2111 93
Other scenarios
FMSY=Fpa 457 115 342 0.22 0.035 0.184 1706 56
F=0 0 0 0 0 0 0 2111 93
FMSYlower 338 85 252 0.158 0.025 0.133 1811 65
FMSYupper 457 115 342 0.22 0.035 0.184 1706 56
FMSY×SSB2024/MSYBtrigger 33 9 25 0.0147 0.0023 0.0124 2081 90
FMSYlower×SSB2024/MSYBtrigger 24 6 18 0.0106 0.00169 0.0089 2089 91
FMSYupper×SSB2024/MSYBtrigger 33 9 25 0.0147 0.0023 0.0124 2081 90
Flim 729 182 548 0.37 0.059 0.31 1474 34
SSB2025=Blim***
SSB2025=Bpa=MSYBtrigger***
SSB2025=SSB2024 1193 291 902 0.68 0.107 0.57 1096 0
SSB2025=SSB2024 x 1.2 920 227 693 0.49 0.077 0.41 1315 20
F=F2023 1313 318 995 0.77 0.122 0.65 1003 -8.5




Symbol Footnotes
* SSB 2025 relative to SSB 2024.
** This is not provided as catch advice for 2022 and 2023 was 0.
*** The Blim, Bpa, and MSYBtrigger options were left blank because Blim, Bpa, and MSYBtrigger cannot be achieved in 2025, even with zero catch.