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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
2020
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
13602
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.5860
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 12 706 tonnes and 27 748 tonnes. According to the MAP, catches higher than those corresponding to FMSY (19 184 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, L. 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
SSB
% SSB change*
% advice change**
2021
2021
2021
2021
2022
2022
2022
(t)
(t)
(t)
(ratio)
(t)
(%)
(%)
ICES Basis Advice
EU MAP ***: FMSY
19184
16454
2730
0.191
115734
3.6
-4
F = MAP FMSY lower
12706
10911
1795
0.122
122644
9.8
-3.9
F = MAP FMSYupper
27748
23756
3992
0.289
106695
-4.5
-3.8
Other scenarios
MSY approach = FMSY
19184
16454
2730
0.191
115734
3.6
-4
F = 0
0
0
0
0
136281
22
-100
Fpa
40123
34250
5874
0.451
93752
-16
101
Flim
45727
38978
6749
0.533
87852
-21
129
SSB (2022) = Blim
96223
80131
16092
1.871
37100
-67
382
SSB (2022) = Bpa
91298
76284
15014
1.649
41800
-63
357
SSB (2022) = MSYBtrigger
91298
76284
15014
1.649
41800
-63
357
F = F2020
21310
18269
3041
0.21
113491
1.63
6.6
Symbol
Footnotes
*
SSB 2022 relative to SSB 2021 (111 674 tonnes)
**
Advice values for 2021 relative to their corresponding 2020 values (MAP advice of 19 982, 13 218 and 28 838 tonnes respectively, others are relative to the 2020 FMSY).
***
The EU multiannual plan (MAP; EU, 2019).
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