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View Advice
Brill (Scophthalmus rhombus) in Subarea 4 and divisions 3.a and 7.d-e (North Sea, Skagerrak and Kattegat, English Channel)
StockCode
bll.27.3a47de
Assessment Year
2023
Stock Category
2
Purpose
Advice
Published
Stock Assessment Key
18206
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.21840735.v1
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 2024 should be no more than 2 456 tonnes. The use of a combined species TAC for brill and turbot prevents effective control of the single-species exploitation rates and could lead to the overexploitation of either species. ICES advises that management should be implemented at the species level and cover the entire stock distribution area (Subarea 4 and divisions 3.a and 7.d–e).
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 (2024)*
Projected landings (2024)
Projected discards (2024)**
Fishing mortality F2024/FMSY
Stock size B2025/BMSY
% B change ***
% Advice change^
2024
2024
2024
2024
2025
2025
2023
(t)
(t)
(t)
(ratio)
(ratio)
(%)
(%)
ICES Basis Advice
MSY approach (35th percentile of predicted catch distribution under F = FMSY)
2456
2326
130
0.91
1.15
-1.4
87
Other scenarios
FMSY
2657
2516
141
1
1.12
-3.8
102
F=F2023
1404
1330
74
0.49
1.29
11
6.8
F=0
0
0
0
0
1.48
27.2
-100
Symbol
Footnotes
*
(Projected landings)/(1-average discard rate); average discard rate by weight 2020-2022 = 5.3%.
**
Including BMS landings. Assuming average discard rate by weight 2020-2022 = 5.3%.
***
Biomass 2025 relative to biomass 2024
^
Advice value for 2024 relative to the advice value for 2023 (1315tonnes).
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