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Megrim (Lepidorhombus whiffiagonis) in divisions 8.c and 9.a (Cantabrian Sea and Atlantic Iberian waters)
StockCode
meg.27.8c9a
Assessment Year
2022
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
17378
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.19448060.v2
Status:
valid
Advice Component
Advice Category
*
FMSYranges
MP
MSY
NoAdv
Other
PA
Advice Type
*
Catches
Effort
FishMort
Landings
NoAd
NoFish
Advice Unit
*
t
ratio
%
AdviceValue
*
Advice Value Lower Range
Advice Value Upper Range
Wanted Catch
Wanted Catch Lower Range
Wanted Catch Upper Range
Advice Sentence
*
ICES advises that when the EU multiannual plan (MAP) for Western Waters and adjacent waters is applied, catches in 2023 that correspond to the F ranges in the MAP are between 654 tonnes and 1456 tonnes. According to the MAP, catches higher than those corresponding to FMSY (968 tonnes) can only be taken under conditions specified in the MAP, while the entire range is considered precautionary when applying the ICES advice rule. Management of catches of the two megrim species—megrim (Lepidorhombus whiffiagonis) and four-spot megrim (Lepidorhombus boscii)—under a combined species TAC prevents effective control of the single-species exploitation rates and could lead to the overexploitation of either species.
Advice Released Date
*
Advice Applicable From
*
Advice Applicable Until
*
TAF Link
Management Alignment
Full
Multiple
Other
Partial
MP WebLink
Management Plan Ownership
Link To Evaluation
Inquiries or Comments?
Email:
Message:
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
968
943
25
0.173
0.147
0.058
4140
-11
75
F = MAP^ FMSY lower^^
654
638
16
0.112
0.095
0.037
4510
-3
18.2
F = MAP^ FMSY upper^^
1456
1418
38
0.28
0.24
0.093
3566
-23
163
Other scenarios
F = 0
0
0
0
0
0
0
5283
13.6
-100
Fpa
2095
2038
57
0.45
0.38
0.15
2823
-39
279
Flim
2594
2520
74
0.62
0.52
0.21
2248
-52
369
SSB (2024) = Bpa
3964
3828
136
1.51
1.28
0.5
725
-84
617
SSB (2024) = Blim
4150
4002
148
1.77
1.5
0.59
532
-89
650
SSB (2024)= MSYBtrigger
3964
3828
136
1.51
1.28
0.5
725
-84
617
SSB2024 = SSB2023
535
522
13
0.093
0.074
0.031
4650
0
-3.3
F = F2022
608
593
15
0.104
0.088
0.035
4564
-1.85
10
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 MAP FMSY lower (371 tonnes) and MAP FMSY upper (672 tonnes), (in % advice change^ column)
^^^
Advice value for 2023 relative to advice value for 2022 (553 tonnes).