Advice and Scenarios Database



Horse mackerel (Trachurus trachurus) in Division 9.a (Atlantic Iberian waters)
StockCode
hom.27.9a
Assessment Year
2018
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
10057
Link to Advice Sheet
https://doi.org/10.17895/ices.pub.4496






Catch scenarios


Basis
Catches
F
SSB*
SSB*
% SSB change**
% Catch change***
% Advice change^
2019 2019 2019 2020 2020 2020 2020
(t) (ratio) (t) (t) (%) (%) (%)
ICES Basis Advice
MSY approach: FMSY 94017 0.11 849635 801104 -5.71 154 69
Other scenarios
F = 0 0 0 853506 897128 5.11 -100 -100
F = F2018 38802 0.044 851956 857383 0.64 5 -30
Mgt Plan^^ 46368 0.053 851646 849209 -0.23 26 -17
F = F2018 × 1.2 46368 0.053 851646 849652 -0.23 26 -17
F = F2018 × 1.6 61308 0.07 851027 834403 -1.95 66 10
F = F2018 × 2.0 75999 0.088 850408 819433 -3.64 106 37
Fpa 94017 0.11 849635 801104 -5.71 154 69
Flim 156490 0.19 846828 737846 -13 324 182
SSB (2020) = Blim 836006 2.153 780975 103000 -87 2163 1405
SSB (2020) = Bpa 741060 1.581 799600 181000 -77 1906 1234
SSB (2020) = MSY Btrigger 741060 1.581 799600 181000 -77 1906 1234




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 2020 relative to SSB 2019.
*** Catches 2019 relative to ICES estimates of catches in 2017 (36 946 t).
^ Advice value 2019 relative to advice value 2018.
^^ Management Plan where F2019 corresponds to a linear increase from F2018=Fsq towards F=FMSY in 2025; SSB 2020 corresponds to an F2020=0.062. As 2019 is the first year of application of the plan, the stability element (± 15% interannual variation in TAC) was not applied.