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Thornback ray (Raja clavata) in Division 9.a (Atlantic Iberian waters)
StockCode (Assessment Component)
rjc.27.9a
Assessment Year
2026
Stock Category
2
Purpose
Advice
Published
Stock Assessment Key
25858
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.30932333
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, landings in 2027 and 2028 should be no more than 1353 and 1336 tonnes, respectively. ICES cannot quantify the corresponding catches. Management of the catches of skates and rays under a combined total allowable catch (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 F/FMSY
Stock size B/BMSY
% Biomass change **
% Advice change ***
Probability of B below Blim
2027
2027
2028
2028
2027
2028
(t)
(ratio)
(ratio)
(%)
(%)
(%)
ICES Basis Advice
Maximum sustainable yield (MSY) approach (15th percentile of predicted catch distribution under F = FMSY)
1353
0.78
1.3
-1.44
-4.4
0.01
Other scenarios
F = FMSY
1704
1
1.25
-4.8
20
0.01
F = F2026
1057
0.61
1.33
1.41
-25
0.01
F = 0
0
0
1.47
11.5
-100
0.01
Landings = 35th percentile of predicted landings distribution under F=FMSY
1563
0.91
1.27
-3.5
10.5
0.01
Symbol
Footnotes
*
The figures in the table are rounded. Calculations were done with unrounded inputs, and computed values may not match exactly when calculated using the rounded figures in the table.
**
Biomass 2028 relative to biomass 2027 at the beginning of the year (1.32).
***
Advice value for 2027 relative to landings advice value for 2026 (1 415 tonnes).
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