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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
2020
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
13597
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.5861
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 2021 that correspond to the F ranges in the MAP are between 312 tonnes and 571 tonnes. According to the MAP, catches higher than those corresponding to FMSY (468 tonnes) can only be taken under conditions specified in the MAP, whilst the entire range is considered precautionary when applying the ICES advice rule. Management of catches of the two megrim species, Lepidorhombus whiffiagonis and L. boscii, under a combined species TAC prevents effective control of the single-species exploitation rates, and could lead to overexploitation of either species. Note: This advice sheet is abbreviated due to the COVID-19 disruption. The previous advice issued for 2020 is attached as Annex 1.
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
Ftotal
Fprojected landings
Fprojected discards
SSB
% SSB change*
% advice change**
2021
2021
2021
2021
2021
2021
2022
2022
2022
(t)
(t)
(t)
(ratio)
(ratio)
(ratio)
(t)
(%)
(%)
ICES Basis Advice
EU MAP ^: FMSY
468
453
15
0.191
0.173
0.018
2231
-4.4
-12.4
F = MAP FMSY lower
312
302
10
0.122
0.11
0.012
2418
3.6
-12.6
F = MAP FMSY upper
571
552
19
0.24
0.22
0.02
2109
-9.7
-11.9
Other scenarios
MSY approach = FMSY
468
453
15
0.191
0.173
0.018
2231
-4.4
-12.4
F = 0
0
0
0
0
0
0
2794
19.7
-100
Fpa
725
701
24
0.32
0.29
0.03
1924
-17.6
36
Flim
945
912
33
0.45
0.41
0.04
1663
-28.7
77
SSB (2022) = Blim
1751
1690
61
0.83
0.76
0.08
700
-70
228
SSB (2022) = Bpa
1516
1464
53
0.72
0.65
0.07
980
-58
184
SSB (2022) = MSYBtrigger
1516
1464
53
0.72
0.65
0.07
980
-58
184
F = F2020
542
524
18
0.226
0.2
0.022
2143
-8.2
1.5
Symbol
Footnotes
*
SSB 2022 relative to SSB 2021.
**
Advice values for 2021 relative to the corresponding 2020 values (MAP advice of 534, 357, and 648 tonnes, respectively; other values are relative to FMSY).
^
The EU multiannual plan (MAP; EU, 2019).
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