Advice and Scenarios Database



Megrim (Lepidorhombus whiffiagonis) in divisions 8.c and 9.a (Cantabrian Sea and Atlantic Iberian waters)
StockCode
meg.27.8c9a
Assessment Year
2018
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
10027
Link to Advice Sheet
https://doi.org/10.17895/ices.pub.4466






Catch scenarios


Basis
Total catch
Wanted catch
Unwanted catch
Ftotal
Flandings
Fdiscards
SSB
% SSB change*
% Advice change**
2019 2019 2019 2019 2019 2019 2020 2020 2020
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%)
ICES Basis Advice
MSY approach: FMSY = F2018 × 0.649 431 417 14 0.191 0.181 0.01 2129 -5 48
Other scenarios
F = 0 0 0 0 0 0 0 2633 17.5 -100
Fpa 669 647 23 0.32 0.3 0.017 1850 -17.5 129
Flim 878 846 32 0.45 0.43 0.025 1608 -28 201
SSB (2020) = Blim 1656 1596 61 0.91 0.86 0.05 700 -69 467
SSB (2020) = Bpa 1417 1365 52 0.78 0.74 0.043 980 -56 385
SSB (2020) = MSYBtrigger 1417 1365 52 0.78 0.74 0.043 980 -56 385
F = F2018 626 605 21 0.29 0.28 0.016 1900 -15.2 114
FMSY lower 286 277 9 0.122 0.115 0.007 2297 2.5 -2.1
FMSY upper (without advice rule) 526 509 17 0.24 0.23 0.013 2017 -10 80
MSY approach: FMSY lower 286 277 9 0.122 0.115 0.007 2297 2.5 -2.1
MSY approach: FMSY upper 526 509 17 0.24 0.23 0.013 2017 -10 80




Symbol Footnotes
* SSB 2020 relative to SSB 2019.
** Catch advice value 2019 relative to catch advice value 2018 (292 tonnes).