Advice and Scenarios Database



Four-spot megrim (Lepidorhombus boscii) in divisions 8.c and 9.a (southern Bay of Biscay and Atlantic Iberian waters East)
StockCode
ldb.27.8c9a
Assessment Year
2022
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
17379
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.19448036.v1






Catch scenarios


Basis
Total catch
Projected landings
Projected discards
Fages 2–4 Total
Fages 2–4 Projected landings
Fages 1–2 Projected discards
SSB
% SSB change*
% advice change^^^
2023 2023 2023 2023 2023 2023 2024 2024 2024
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%)
ICES Basis Advice
EU MAP^: FMSY 2282 2129 153 0.176 0.108 0.075 10295 -15 21
F = MAP^ FMSY lower^^ 1595 1489 106 0.119 0.073 0.051 11023 -9 24
F = MAP^ FMSY upper^^ 3421 3187 234 0.28 0.173 0.119 9095 -25 26
Other scenarios
MSY approach = FMSY 2282 2129 153 0.176 0.108 0.075 10295 -15 21
F = 0 0 0 0 0 0 0 12718 5 0
Fpa 5090 4730 360 0.46 0.28 0.195 7350 -39 169
SSB (2024) = Bpa 9444 8689 755 1.26 0.82 0.54 2932 -76 399
SSB (2024) = Blim 10076 9248 828 1.48 0.96 0.63 2321 -81 433
SSB2024 = SSB2023 563 526 37 0.04 0.026 0.017 12118 0 -70
SSB (2024)= MSYBtrigger 9444 8689 755 1.26 0.82 0.54 2932 -76 399
F = F2022 1268 1184 84 0.093 0.057 0.04 11370 -6.2 -33




Symbol Footnotes
* SSB 2024 relative to SSB 2023.
^ The EU multiannual plan (MAP; EU, 2019).
^^ Advice value for 2023 relative to the advice value for 2022 for the FMSY lower (1283 tonnes) and FMSY upper (2724 tonnes), (in % advice change^ column)
^^^ Advice value for 2023 relative to advice value for 2022 (1892 tonnes).