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Thornback ray (Raja clavata) in divisions 8.a-b and 8.d (Bay of Biscay)
StockCode
rjc.27.8abd
Assessment Year
2024
Stock Category
2
Purpose
Advice
Published
Stock Assessment Key
19105
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.25019525.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 maximum sustainable yield (MSY) approach is applied, catches in 2025 and 2026 should be no more than 306 tonnes and 311 tonnes respectively. All catches are assumed to be landed. Management of the catches of skates and rays under a combined TAC prevents effective control of single-stock exploitation rates and could lead to overexploitation of some 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 landings
Fishing mortality F2026/FMSY
Stock size B2027/BMSY *
% B change **
% advice change***
2025
2025
2026
2026
2026
(t)
(ratio)
(ratio)
(%)
(%)
ICES Basis Advice
Maximum sustainable yield (MSY) approach (35th percentile of predicted landings distribution under F = FMSY)
306
0.79
0.91
2.5
19
Other scenarios
FMSY
387
1
0.89
0.76
51
F=F2024
382
0.99
0.89
0.89
49
F=0
0
0
0.96
9.1
-100
Landings = 10th percentile of predicted landings distribution under F=FMSY
163
0.42
0.93
5.6
-36
Landings = 15th percentile of predicted landings distribution under F=FMSY
199
0.52
0.93
4.8
-22
Landings = 20th percentile of predicted landings distribution under F=FMSY
228
0.59
0.92
4.2
-11.3
Symbol
Footnotes
*
Biomass is at 01 January.
**
Percentage change of B2026/BMSY relative to B2025/BMSY.
***
Advice value for 2025 relative to landings advice value for 2024 (257 tonnes).
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