Advice and Scenarios Database



Horse mackerel (Trachurus trachurus) in Division 9.a (Atlantic Iberian waters)
StockCode
hom.27.9a
Assessment Year
2021
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
15610
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.7779






Catch scenarios


Basis
Catches
F
SSB*
SSB*, #
% SSB change**
% Catch change***
% Advice change^
2022 2022 2022 2023 2023 2023 2023
(t) (ratio) (t) (t) (%) (%) (%)
ICES Basis Advice
MSY approach: FMSY 143505 0.15 1014303 920156 -9 376 12
Other scenarios
F=0 0 0 1020305 1067543 5 -100 -100
F=F2020 24515 0.024 1019335 1042245 2 -19 -81
Management plan ^^ 107460 0.11 1015887 957010 -6 256 -16
F=F2020×1.2 29352 0.029 1019141 1037258 2 -3 -77
F=F2020×1.6 38962 0.039 1018753 1027358 1 29 -70
F=F2020×2.0 48486 0.049 1018365 1017554 0 61 -62
Fpa 143505 0.15 1014303 920156 -9 376 12
Flim 178254 0.19 1012722 884739 -13 491 39
SSB (2023)=Blim 1005636 2.41 928708 103000 -89 3234 682
SSB (2023)=Bpa 910765 1.82 950233 181000 -81 2919 608
SSB(2023)= MSYBtrigger 910765 1.82 950233 181000 -81 2919 608




Symbol Footnotes
* For this stock, the SSB is determined at spawning time (assumed to be mid-January) and is influenced by fisheries before spawning.
** SSB 2023 relative to SSB 2022.
*** Catches in 2022 relative to ICES estimates of catches in 2020 (30 177 tonnes).
# Assuming same catch scenario in 2023 as in 2022.
^ Advised catches for 2022 relative to the advised catches for 2021 (128 627 tonnes).
^^ Modification of the proposed management plan was requested, calling for Ftarget = 0.11 (FMSY at time of the management plan establishment) to be achieved in 2022.