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View Advice
Megrim (Lepidorhombus spp.) in Division 6.b (Rockall)
StockCode (Assessment Component)
lez.27.6b
Assessment Year
2025
Stock Category
2
Purpose
Advice
Published
Stock Assessment Key
21206
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.27202674
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 maximum sustainable yield (MSY) approach is applied, catches in 2026 should be no more than 1 205 tonnes. ICES notes the existence of a precautionary management plan, developed and adopted by one of the relevant management authorities for this stock. Management of four-spot megrim and megrim under a combined species total allowable catch (TAC) prevents effective control of the single-species exploitation rates and could lead to the overexploitation of either species. Management should be implemented at the stock level.
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
F/Fmsy
B/Bmsy
% B change**
% advice change***
2026
2026
2027
2027
2026
(t)
(ratio)
(ratio)
(%)
(%)
ICES Basis Advice
MSY approach (35th percentile of predicted catch distribution under F = FMSY)
1205
0.91
1.43
-7.3
1.08
Other scenarios
FMSY
1320
1
1.4
-8.8
10.8
F2024
551
0.4
1.56
1.12
-54
F=0
0
0
1.66
8.2
-100
Symbol
Footnotes
*
Calculations were done with unrounded inputs, and computed values may not match exactly when calculated using the rounded figures in the table.
**
Biomass 2026 relative to biomass 2025.
***
Advice value for 2025 relative to the advice value for 2024 (1115tonnes).
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