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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
2018
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
10036
Link to Advice Sheet
https://doi.org/10.17895/ices.pub.4460
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 MSY approach is applied, catches in 2019 should be no more than 18 976 tonnes. Management of megrim and four-spot megrim under a combined species TAC prevents effective control of the single-species exploitation rates and could lead to 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
Wanted catch
Unwanted catch
Ftotal
SSB
% SSB change *
% Advice change **
2019
2019
2019
2019
2020
2020
2019
(t)
(t)
(t)
(ratio)
(t)
(%)
(%)
ICES Basis Advice
MSY approach: FMSY
18976
15092
3884
0.191
122698
9.7
21
Other scenarios
F = 0
0
0
0
0
144860
29
-100
Fpa
39713
31337
8376
0.45
98849
-11.7
153
Flim
45273
35634
9639
0.53
86513
-23
188
SSB (2020) = Blim
96467
73309
23158
1.88
37100
-67
514
SSB (2020) = Bpa
91767
70056
21711
1.68
41800
-63
484
SSB (2020) = MSYBtrigger
91767
70056
21711
1.68
41800
-63
484
F = F2018
21879
17386
4493
0.22
119300
6.6
39
F = FMSYlower
12528
9967
2541
0.122
130172
16.3
-20
F = FMSYupper
27371
21704
5667
0.29
112972
0.97
74
Symbol
Footnotes
*
SSB 2020 relative to SSB 2019.
**
Catches in 2019 relative to the advised catch in 2018 (15720tonnes).
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