Advice and Scenarios Database



Megrim (Lepidorhombus whiffiagonis) in divisions 7.b-k, 8.a-b, and 8.d (west and southwest of Ireland, Bay of Biscay)
StockCode
meg.27.7b-k8abd
Assessment Year
2021
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
16699
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.7790






Catch scenarios


Basis
Total catch
Projected landings*
Projected discards **
Ftotal
SSB
% SSB change***
% Advice change^
2022 2022 2022 2022 2023 2023 2023
(t) (t) (t) (ratio) (t) (%) (%)
ICES Basis Advice
MSY approach: FMSY 22964 20152 2812 0.191 138512 2 20
Other scenarios
EU MAP^^^ = FMSY 22964 20152 2812 0.191 138512 2 20
F = MAP^^^ FMSYlower^^ 15205 13357 1848 0.122 146818 8 26
F = MAP^^^ FMSYupper^^ 33269 29156 4113 0.29 127599 -6 20
F = 0 0 0 0 0 162887 19 -100
Fpa 45238 39579 5659 0.42 115164 -16 136
Flim 54973 48018 6955 0.53 105181 -23 187
SSB (2023) = Blim 123120 105281 17839 2.2 37100 -73 542
SSB (2023) = Bpa 118180 101350 16830 1.94 41800 -69 516
SSB (2023) = MSYBtrigger 118180 101350 16830 1.94 41800 -69 516
SSB (2023) = SSB (2022) 24968 21903 3065 0.21 136377 0 30
F = F2021 22861 20062 2799 0.19 138621 2 19




Symbol Footnotes
* Marketable landings, assuming recent discard rate.
** Including BMS landings (EU stocks), assuming recent discard rate.
*** SSB 2023 relative to SSB 2022.
^ Advice value for 2022 relative to advice value for 2021 (19 184 tonnes).
^^ Advice value this year relative to the advice value for last year for the MAP FMSY lower (12 076 tonnes) and MAP FMSY upper (27 748 tonnes), (in % Advice change^ column)
^^^ EU multiannual plan (MAP) for the Western Waters (EU, 2019).