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Thornback ray (Raja clavata) in divisions 7.a, 7.f, and 7.g (Irish Sea, Bristol Channel, Celtic Sea North)
Species:
Stock Coordinator
Stock code:
rjc.27.7afg
Assessment Year:
2026
Key:
25860
Unit weights
tonnes
Unit recruitment
thousands
Fishing pressure description
Lfm/Lmean
Fishing pressure units
Stock size description
B_index
Stock size units
Kilograms per hour
Fish reference points
Management plan
SSB
MP
F
MP
MSY approach
MSYB
trigger
F
MSY
Precautionary approach
B
lim
B
pa
F
lim
F
pa
Age and Length
Recruitment
0
F
Fish data
Year
Low SSB
SSB
High SSB
Landings
F
1993
0.941370353156348
2.056049867668
3.50737669991367
1994
1.03974142705328
1.84950296095238
2.85340586014637
1995
1.63583446020958
3.01889907493103
4.56302446680619
1996
1.4532676840853
2.54557099837466
3.72308213686021
1997
1.26169547699253
2.6100467474964
4.45810234390771
1998
1.68352929022747
2.78451906638278
4.01399891917539
1999
1.42748584071704
2.41913063218806
3.60171371842129
2000
0.977074423089905
1.71305228830826
2.60554659498778
2001
1.69772099950146
2.9072622768053
4.36928617921195
2002
1.69697114769678
2.62698327919558
3.70844984233897
2003
1.605780070299
2.69039311202252
3.95439115913132
2004
2.68427185374373
5.23269392296169
9.37939284884615
2005
1.63202228178752
2.52365438957533
3.50843525071828
2006
1.50892775961729
2.63991491237364
4.19897080729235
2007
1.58322081617683
2.42397317565192
3.4108864162975
2008
1.73164058146663
2.92610310132034
4.14020746997493
2009
2.40592228896022
3.60668134554716
5.02668031972391
671.023485
2010
2.51666433561056
3.64696465708905
4.8566700347799
780.40944
2011
1.97061093750735
3.08680701993179
4.3119338561593
944.411055
2012
2.32773338756977
3.41655410326715
4.67329845317659
1164.673202
2013
3.36352228604443
4.76535802304036
6.23948944105584
1047.538024
2014
3.5305629123305
5.12369118923744
7.1232049202419
789.656892
2015
2.54157888570937
3.79422751182275
5.22999684521985
902.772605
2016
4.78141916726818
6.77583684972041
9.03166482692802
861.04457
2017
5.79844660571567
7.84866878357716
10.3846145446029
877.760839
2018
6.93382986064768
9.47619666523621
12.8040918031872
842.732726
2019
7.2708029962339
9.74379671828552
12.6014393480133
960.109684
0.899
2020
909.728801
0.899
2021
7.67672471530972
10.1301889174038
12.8362931064347
972.95637
0.899
2022
6.61958744031698
9.02069226962666
11.4857452372068
1023.169102
0.968
2023
7.88365194554232
10.6272608938114
13.4180612083807
878.833697
0.971
2024
7.72004957762346
10.7190793288572
14.0116789918558
824.921167
1.01
2025
4.84155835617795
6.88592946765053
9.49843048350557
805.76287
1.04
Custom reference points
CustomRefPointName
CustomRefPointValue
CustomRefPointNotes
I_{trigger}
2.39827
F_{MSY proxy}
1
Custom fish data column names
CustomName1
Custom fish data
Year
Custom1
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
0.899
2020
0.899
2021
0.899
2022
0.968
2023
0.971
2024
1.01
2025
1.04
Sensivity data