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Stock Assessment Graphs
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Megrim (Lepidorhombus whiffiagonis) in divisions 7.b–k, 8.a, 8.b, and 8.d (west and southwest of Ireland, Bay of Biscay)
Species:
Stock Assessment Graphs
Stock code:
meg.27.7b-k8abd
Assessment Year:
2025
Key:
21222
Unit weights
tonnes
Unit recruitment
thousands
Fishing pressure description
F
Fishing pressure units
Stock size description
SSB
Stock size units
tonnes
Fish reference points
Management plan
SSB
MP
F
MP
MSY approach
MSYB
trigger
43947
F
MSY
0.27
Precautionary approach
B
lim
35795
B
pa
43947
F
lim
F
pa
0.49
Age and Length
Recruitment
1
F
3-6
Fish data
Year
Low Recruitment
Recruitment
High Recruitment
Low TBiomass
TBiomass
High TBiomass
Low SSB
SSB
High SSB
Landings
Catches
Discards
Low F
F
High F
1984
208121
237159
270249
92864
100994
109835
69047
76812
85450
16659
18828
2169
0.167
0.195
0.23
1985
199185
227593
260053
99340
107911
117222
72807
81019
90157
17865
19597
1732
0.2
0.23
0.27
1986
189851
217252
248606
100356
109292
119023
76570
85333
95100
18927
21248
2321
0.21
0.24
0.28
1987
159449
182396
208645
102640
111363
120826
78213
86745
96208
17114
18819
1705
0.19
0.22
0.25
1988
158914
181928
208275
86463
93354
100795
67220
73850
81135
17577
19302
1725
0.21
0.24
0.28
1989
197597
226371
259335
74826
80908
87484
57298
63064
69411
19233
21815
2582
0.32
0.36
0.41
1990
222860
254969
291703
67876
73193
78927
46424
51175
56412
14370
17654
3284
0.34
0.39
0.44
1991
254384
291324
333627
69208
74322
79815
44709
49048
53808
15094
18376
3282
0.36
0.41
0.47
1992
213944
244536
279502
67855
72217
76859
43240
46825
50707
15600
18588
2988
0.31
0.35
0.4
1993
182149
207857
237194
67951
72057
76412
46448
49924
53660
14929
18037
3108
0.31
0.36
0.41
1994
186161
212316
242144
66247
70109
74197
45125
48328
51759
13684
16384
2700
0.28
0.31
0.36
1995
214365
244522
278920
72228
76408
80831
51686
55383
59345
15862
19068
3206
0.28
0.32
0.37
1996
244792
278931
317832
65503
69345
73412
47764
51220
54926
15109
18135
3026
0.32
0.36
0.41
1997
215619
246355
281472
74137
78379
82864
48358
51781
55446
14230
17296
3066
0.27
0.31
0.35
1998
249765
284902
324981
77077
81605
86400
51033
54558
58326
14345
19716
5371
0.31
0.35
0.4
1999
238340
272364
311245
66575
70585
74837
43994
47109
50445
13305
16601
3297
0.33
0.37
0.42
2000
275421
314068
358139
70239
74613
79259
43637
46700
49979
15031
16901
1870
0.34
0.38
0.43
2001
245353
279156
317617
76762
81728
87016
44576
47837
51337
15778
18040
2262
0.42
0.48
0.54
2002
258452
294937
336572
68841
73374
78206
40399
43439
46708
15987
18800
2813
0.44
0.49
0.55
2003
241588
274632
312195
63972
68023
72330
38678
41467
44458
15711
19719
4008
0.44
0.49
0.55
2004
195630
221825
251527
57615
61190
64988
34791
37228
39835
14358
20602
6243
0.43
0.49
0.55
2005
203008
229746
260006
53483
56697
60105
33634
36023
38581
12888
16163
3275
0.47
0.52
0.59
2006
244924
276962
313190
53654
56706
59931
31979
34136
36438
12037
15788
3751
0.39
0.44
0.49
2007
211222
238948
270314
57850
61059
64445
33630
35854
38225
13060
16092
3033
0.4
0.45
0.51
2008
155430
175811
198864
59926
63212
66679
35987
38249
40654
11048
13908
2860
0.28
0.32
0.36
2009
194562
220364
249588
72262
76266
80492
45009
47923
51026
15064
18342
3278
0.29
0.33
0.37
2010
193910
219874
249314
65603
69388
73391
47503
50750
54218
15101
20444
5343
0.36
0.4
0.45
2011
170128
192990
218924
56478
59681
63065
38876
41484
44268
13226
17413
4187
0.34
0.38
0.43
2012
138511
156737
177361
54235
57407
60765
40079
42811
45728
14433
18137
3704
0.33
0.37
0.42
2013
130603
148152
168060
59638
63115
66796
41684
44588
47694
16025
20910
4885
0.41
0.47
0.52
2014
114681
130521
148550
64871
68596
72535
47055
50231
53622
13277
15846
2569
0.3
0.34
0.39
2015
102048
116239
132404
55853
59157
62658
39667
42339
45190
11569
13962
2393
0.27
0.3
0.35
2016
115113
130984
149043
60294
63923
67770
43006
45953
49103
11548
14863
3315
0.28
0.32
0.37
2017
124174
142542
163628
58002
61563
65343
38044
40713
43569
13784
17303
3518
0.38
0.43
0.49
2018
142385
166019
193575
73790
78545
83607
41560
44388
47409
12147
15562
3415
0.3
0.34
0.39
2019
155776
187336
225289
77171
83124
89537
39878
42710
45744
12164
14130
1966
0.29
0.33
0.37
2020
127354
160476
202212
72507
79149
86399
40709
43974
47502
11141
13626
2485
0.25
0.29
0.33
2021
93876
126651
170869
68916
76723
85415
41962
46019
50467
12418
15020
2603
0.36
0.42
0.48
2022
118138
172287
251255
70239
80681
92675
43508
49281
55821
10821
13161
2340
0.25
0.3
0.36
2023
65373
111230
189254
60533
71751
85046
41217
48633
57382
9647
11541
1895
0.183
0.23
0.28
2024
50232
111090
245679
58748
72285
88942
39776
48752
59753
8398
9954
1556
0.146
0.191
0.25
2025
111160
57378
Custom reference points
Custom fish data column names
Custom fish data
Sensivity data