Advice and Scenarios Database



Haddock (Melanogrammus aeglefinus) in Subarea 4, Division 6.a, and Subdivision 20 (North Sea, West of Scotland, Skagerrak)
StockCode
had.27.46a20
Assessment Year
2022
Stock Category
1
Purpose
Replaced
Published
Stock Assessment Key
17356
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.19447943.v1






Catch scenarios


Basis
Total catch
Projected landings
Projected discards and IBC*
Ftotal (ages 2–4)
Fprojected landings (ages 2–4)
Fprojected discards and IBC (ages 2–4)
SSB
% SSB change^
% TAC change^^
% advice change^^^
2023 2023 2023 2023 2023 2023 2024 2024 2024 2024
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%) (%)
ICES Basis Advice
MSY approach: FMSY 137058 118373 18685 0.24 0.19 0.05 438042 -11.5 160 6.5
Other scenarios
F = FMSYlower 109157 94391 14766 0.19 0.15 0.04 461609 -6.7 107 -15.2
F = FMSY upper# 137058 118373 18685 0.24 0.19 0.05 438042 -11.5 160 6.5
F = 0 0 0 0 0 0 0 556373 12.4 -100 -100
Fpa 137058 118373 18685 0.24 0.19 0.05 438042 -11.5 160 6.5
Flim 223464 192501 30963 0.43 0.35 0.09 363491 -27 324 74
SSB (2024) =Blim 496564 419677 76887 1.54 1.24 0.31 136540 -72 842 286
SSB (2024) =Bpa =MSYBtrigger 429169 363631 65538 1.13 0.91 0.22 189733 -62 715 233
F = F2022 67653 58557 9096 0.11 0.09 0.02 498369 0.73 28 -47
Rollover TAC 52690 45652 7038 0.09 0.07 0.02 511261 3.3 0 -59




Symbol Footnotes
* Including below minimum size (BMS) landings, assuming recent discard rate.
# For this stock, FMSY upper = FMSY.
^ SSB 2024 relative to SSB 2023.
^^ Human consumption fishery (HCF) catch in 2023 relative to TAC in 2022: Subdivision 20 (2761 t) + Subarea 4 (44 924 t) + Division 6.a (5006 t) = 52 691 t.
^^^ Total catch 2023 relative to the advice value 2022 (128 708 t).