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Stock Assessment Graphs
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Spurdog (Squalus acanthias) in subareas 1–10, 12, and 14 (Northeast Atlantic and adjacent waters)
(
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View source data
Species:
Squalus acanthias
Stock code:
dgs.27.nea
Assessment Component:
Assessment Year:
2026
Purpose:
Advice
Assessment Key:
25850
Stock Key:
169094
Year
Recruitment (pups at age 0)
Mean + 2*SD
Mean - 2*SD
Total Biomass
Mean + 2*SD
Mean - 2*SD
Landings
Discards
Harvest Rate
Mean + 2*SD
Mean - 2*SD
Ages 5-30
thousands
tonnes
tonnes
tonnes
1905
219000
225000
213000
1224140
1257342
1190938
7248
0.0074
0.0078
0.0070
1906
221000
227000
215000
1217200
1250410
1183990
2200
0.0023
0.0024
0.0022
1907
222000
228000
216000
1215620
1248842
1182398
1428
0.00147
0.00154
0.00140
1908
222000
228000
216000
1214980
1248216
1181744
1409
0.00145
0.00152
0.00138
1909
222000
228000
216000
1214510
1247758
1181262
2022
0.0021
0.0022
0.0020
1910
223000
228000
217000
1213610
1246868
1180352
1563
0.00162
0.00169
0.00154
1911
223000
229000
217000
1213360
1246628
1180092
1957
0.0020
0.0021
0.00193
1912
223000
229000
217000
1212900
1246176
1179624
3199
0.0033
0.0035
0.0032
1913
224000
230000
218000
1211420
1244704
1178136
4050
0.0042
0.0044
0.0040
1914
224000
230000
219000
1209390
1242682
1176098
2641
0.0027
0.0029
0.0026
1915
225000
231000
219000
1209020
1242318
1175722
2602
0.0027
0.0028
0.0026
1916
225000
231000
219000
1208900
1242202
1175598
534
0.00056
0.00058
0.00053
1917
225000
231000
219000
1210950
1244252
1177648
339
0.00035
0.00037
0.00034
1918
225000
230000
219000
1213220
1246516
1179924
451
0.00047
0.00049
0.00045
1919
224000
230000
218000
1215380
1248664
1182096
2659
0.0028
0.0029
0.0026
1920
224000
230000
219000
1215370
1248642
1182098
4396
0.0046
0.0048
0.0043
1921
225000
231000
219000
1213790
1247050
1180530
5321
0.0055
0.0058
0.0053
1922
226000
232000
220000
1211500
1244754
1178246
5401
0.0056
0.0059
0.0054
1923
226000
232000
220000
1209390
1242640
1176140
5655
0.0059
0.0062
0.0056
1924
227000
233000
221000
1207280
1240532
1174028
6355
0.0067
0.0070
0.0063
1925
228000
234000
222000
1204770
1238028
1171512
6719
0.0071
0.0074
0.0067
1926
228000
234000
223000
1202230
1235498
1168962
7277
0.0077
0.0080
0.0073
1927
229000
235000
223000
1199500
1232784
1166216
8395
0.0089
0.0093
0.0085
1928
230000
236000
224000
1196080
1229382
1162778
9522
0.0101
0.0106
0.0097
1929
231000
237000
225000
1192040
1225366
1158714
9320
0.0100
0.0104
0.0095
1930
232000
238000
226000
1188720
1222074
1155366
11914
0.0128
0.0134
0.0122
1931
234000
239000
228000
1183410
1216796
1150024
11838
0.0128
0.0134
0.0122
1932
235000
241000
229000
1178840
1212262
1145418
16726
0.0182
0.0191
0.0174
1933
237000
242000
231000
1170200
1203664
1136736
20244
0.022
0.023
0.021
1934
239000
244000
233000
1159090
1192606
1125574
20378
0.023
0.024
0.022
1935
240000
246000
235000
1148980
1182556
1115404
22266
0.025
0.026
0.024
1936
242000
248000
236000
1138160
1171798
1104522
20925
0.024
0.025
0.023
1937
243000
249000
237000
1129820
1163520
1096120
23930
0.028
0.029
0.027
1938
244000
250000
238000
1119640
1153398
1085882
18196
0.022
0.023
0.021
1939
244000
250000
239000
1116220
1150028
1082412
20119
0.024
0.025
0.023
1940
245000
250000
239000
1111740
1145586
1077894
9428
0.0113
0.0119
0.0108
1941
245000
250000
239000
1118520
1152384
1084656
8740
0.0105
0.0110
0.0100
1942
245000
250000
239000
1126170
1160026
1092314
10625
0.0126
0.0132
0.0120
1943
244000
250000
239000
1132050
1165878
1098222
8181
0.0097
0.0101
0.0092
1944
244000
249000
239000
1140370
1174152
1106588
8151
0.0096
0.0100
0.0091
1945
244000
249000
238000
1148550
1182272
1114828
6776
0.0079
0.0083
0.0075
1946
243000
248000
238000
1157810
1191460
1124160
10895
0.0126
0.0131
0.0120
1947
243000
248000
237000
1162670
1196244
1129096
16893
0.0194
0.020
0.0185
1948
243000
248000
237000
1161430
1194936
1127924
19491
0.022
0.023
0.021
1949
243000
249000
237000
1157700
1191154
1124246
23010
0.027
0.028
0.025
1950
244000
249000
238000
1150710
1184134
1117286
24750
0.029
0.030
0.027
1951
244000
250000
239000
1142370
1175782
1108958
35301
0.041
0.043
0.040
1952
245000
250000
240000
1124190
1157616
1090764
40550
0.049
0.051
0.046
1953
246000
251000
240000
1101850
1135314
1068386
38206
0.047
0.049
0.045
1954
245000
251000
240000
1083020
1116538
1049502
40570
0.051
0.054
0.049
1955
245000
250000
240000
1062960
1096534
1029386
43127
0.056
0.058
0.053
1956
244000
249000
238000
1041540
1075164
1007916
46951
0.063
0.066
0.060
1957
241000
246000
236000
1017520
1051178
983862
45570
0.063
0.066
0.060
1958
239000
243000
234000
996042
1029712
962372
50394
0.072
0.075
0.068
1959
235000
239000
230000
970792
1004440
937144
47394
0.070
0.074
0.066
1960
231000
235000
226000
949491
983081
915901
53997
0.082
0.087
0.078
1961
225000
230000
220000
922343
955835
888851
57721
0.092
0.097
0.087
1962
218000
223000
213000
892157
925507
858807
57256
0.095
0.100
0.090
1963
211000
216000
206000
862962
896134
829790
62288
0.108
0.114
0.102
1964
202000
207000
197000
829023
861977
796069
60146
0.110
0.117
0.104
1965
193000
199000
188000
797360
830064
764656
49336
0.095
0.101
0.089
1966
188000
193000
182000
776425
808861
743989
42713
0.085
0.090
0.080
1967
185000
191000
179000
761743
793901
729585
44116
0.089
0.095
0.084
1968
182000
188000
176000
745089
776969
713209
56043
0.116
0.123
0.108
1969
175000
181000
169000
715832
747452
684212
52074
0.113
0.120
0.105
1970
169000
175000
163000
690023
721421
658625
47557
0.107
0.114
0.100
1971
164000
171000
158000
668205
699433
636977
45653
0.106
0.113
0.099
1972
160000
167000
154000
647751
678869
616633
50416
0.121
0.129
0.112
1973
154000
161000
147000
621931
653005
590857
49412
0.123
0.132
0.114
1974
148000
155000
141000
596552
627658
565446
45684
0.119
0.128
0.110
1975
182000
257000
107000
576792
606802
546782
44119
0.120
0.129
0.110
1976
177000
251000
102000
558811
587687
529935
44064
0.124
0.134
0.114
1977
177000
254000
101000
541466
569004
513928
42252
0.124
0.135
0.114
1978
160000
227000
93000
525542
551846
499238
47235
0.145
0.157
0.132
1979
142000
201000
84000
504096
529252
478940
38201
0.124
0.135
0.113
1980
131000
183000
78000
491329
515423
467235
40968
0.136
0.148
0.124
1981
115000
160000
70000
474756
497988
451524
39962
0.137
0.149
0.124
1982
107000
148000
65000
458144
480708
435580
32402
0.116
0.127
0.106
1983
104000
143000
64000
447942
469984
425900
37046
0.137
0.150
0.125
1984
103000
142000
63000
431882
453530
410234
35194
0.137
0.149
0.124
1985
95000
130000
60000
416083
437497
394669
38674
0.153
0.167
0.139
1986
91000
125000
57000
395411
416707
374115
30910
0.125
0.137
0.114
1987
93000
127000
59000
381599
402857
360341
42356
0.178
0.195
0.162
1988
70000
95000
45000
354158
375520
332796
35569
0.160
0.174
0.145
1989
70000
95000
45000
332657
354213
311101
30279
0.141
0.154
0.127
1990
73000
100000
47000
315869
337697
294041
29906
0.146
0.160
0.131
1991
82000
112000
53000
299444
321612
277276
29563
0.150
0.166
0.135
1992
72000
99000
45000
282474
305070
259878
29046
0.152
0.168
0.136
1993
64000
88000
40000
265180
288300
242060
25637
0.147
0.163
0.130
1994
53000
72000
33000
250274
273980
226568
20851
0.128
0.144
0.113
1995
69000
93000
44000
240733
265225
216241
21318
0.131
0.146
0.115
1996
52000
72000
31000
229660
254972
204348
17295
0.111
0.125
0.097
1997
55000
77000
33000
222340
248570
196110
15348
0.101
0.115
0.087
1998
58000
82000
34000
216755
243989
189521
13919
0.093
0.107
0.080
1999
63000
90000
37000
212635
240947
184323
12385
0.085
0.098
0.073
2000
67000
96000
39000
210201
239635
180767
15891
0.110
0.127
0.094
2001
60000
85000
34000
203788
234390
173186
16693
0.121
0.141
0.102
2002
64000
93000
36000
196905
228749
165061
11170
0.087
0.102
0.071
2003
65000
93000
36000
195797
228933
162661
12247
0.095
0.113
0.078
2004
67000
97000
37000
193963
228431
159495
9366
0.073
0.088
0.059
2005
70000
101000
39000
195452
231322
159582
7092
20
0.053
0.064
0.042
2006
60000
86000
34000
198770
236084
161456
3996
22
0.028
0.034
0.022
2007
64000
92000
36000
205338
244164
166512
2892
34
0.0199
0.024
0.0157
2008
90000
132000
48000
214515
255077
173953
1791
46
0.0120
0.0145
0.0095
2009
122000
180000
63000
227083
269675
184491
1968
96
0.0126
0.0152
0.0100
2010
82000
120000
45000
237923
282601
193245
886
1523
0.0153
0.0186
0.0121
2011
150000
228000
72000
252653
299905
205401
427
2597
0.0194
0.024
0.0151
2012
123000
184000
63000
266740
316860
216620
447
4757
0.032
0.039
0.025
2013
113000
168000
58000
279191
332511
225871
331
2939
0.0190
0.023
0.0149
2014
132000
200000
63000
295631
352763
238499
381
2915
0.0184
0.022
0.0145
2015
201000
358000
44000
317353
380509
254197
257
3016
0.0175
0.021
0.0137
2016
398000
733000
63000
353683
420717
286649
371
1580
0.0089
0.0108
0.0071
2017
169000
259000
79000
383234
455754
310714
294
4781
0.025
0.030
0.0192
2018
152000
231000
74000
409715
488009
331421
362
2371
0.0121
0.0148
0.0095
2019
157000
233000
81000
439988
524554
355422
455
3165
0.0152
0.0185
0.0119
2020
204000
305000
103000
473531
565589
381473
526
942
0.0051
0.0062
0.0040
2021
202000
300000
104000
510659
611075
410243
539
639
0.0037
0.0045
0.0029
2022
263000
387000
139000
551295
660961
441629
474
967
0.0045
0.0054
0.0035
2023
226000
327000
125000
589772
708276
471268
2317
1891
0.0109
0.0131
0.0086
2024
165000
232000
97000
621263
747735
494791
2510
1876
0.0100
0.0121
0.0078
2025
181000
253000
108000
652023
786111
517935
2532
2431
0.0106
0.0129
0.0083
2026
164000
192000
136000
679893
820687
539099
Average
179934.426
207090.164
152688.525
771778
810476
733080
20573
1838
0.055
0.061
0.050
Fishing pressure
Stock size
2023
2024
2025
2024
2025
2026
Maximum sustainable yield
HR
MSY
Below
MSY B
trigger
Below trigger
Precautionary approach
HR
pa
Below
B
pa
,B
lim
Full reproductive capacity
Management plan
F
MGT
Not applicable
B
MGT
Not applicable