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Megrim (Lepidorhombus spp.) in divisions 4.a and 6.a (northern North Sea, West of Scotland)
Species:
Stock Assessment Graphs
Stock code:
lez.27.4a6a
Assessment Year:
2025
Key:
19856
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
0.5
F
MSY
1
Precautionary approach
B
lim
0.3
B
pa
0.5
F
lim
F
pa
Age and Length
Recruitment
0
F
Fish data
Year
Low SSB
SSB
High SSB
Landings
Catches
Discards
Low F
F
High F
1985
1.25230311233097
2.36137083425453
3.67152951663582
4499
6427
1928
0.371893490256018
0.658848953259888
1.12176777658986
1986
1.09834541139374
1.65552526128562
2.25917878404329
2858
4051
1193
0.325382411141311
0.519815685770181
0.79335979946814
1987
1.09145812805109
1.56241911173088
2.06530527609529
4614
6488
1874
0.556934188964472
0.908556707087388
1.33265341055265
1988
1.0028522813345
1.43468059719454
1.9998233872467
5212
7273
2061
0.65048407862734
1.13028215151058
1.66435133679469
1989
0.810382072035412
1.1605262200969
1.60815947218309
3451
4778
1327
0.496215203511143
0.859747207860314
1.27149110501218
1990
0.755208318017119
1.0615095855284
1.42528079220444
3047
4187
1140
0.491728719955999
0.806755495200845
1.20277067449361
1991
0.693992159477041
0.994523010140922
1.32083044201708
3310
4514
1204
0.590348161203604
0.935806484538277
1.42964461157434
1992
0.745628442546397
1.04154793125169
1.36857464113267
3574
4837
1263
0.59922133658874
0.966579577661801
1.43567592085069
1993
0.780053355768658
1.11277544501885
1.5077886729947
3802
5107
1305
0.583449688115817
0.963843369904873
1.47117367687933
1994
0.816506346643231
1.1954370972065
1.67298478826262
3900
5200
1300
0.521170029233131
0.924233099799535
1.38968436747891
1995
0.850413869662387
1.22105053785512
1.67666177308796
4670
6181
1511
0.612881524900812
1.09941190902487
1.64509862855726
1996
0.824090166930185
1.18590454491175
1.7036725943381
5253
6902
1649
0.697922321601714
1.29474492157359
1.92548645800967
1997
0.737828520985619
1.00930227972836
1.40315985341182
4856
6334
1478
0.765877960568015
1.37340489178848
2.02183053745107
1998
0.67287346547491
0.956097574492064
1.36290965040215
4253
5507
1254
0.690738354462842
1.23914186165191
1.84985869251097
1999
0.628205210457518
0.922689907583477
1.36169010018883
3759
4833
1074
0.572053055368977
1.10889988021841
1.6409663294338
2000
0.593024546274183
0.865775163297998
1.21695076224349
3494
4460
966
0.588406199542155
1.0761778445475
1.59683788603186
2001
0.557497858450374
0.801695837668647
1.11339862394553
3571
4527
956
0.672857408838148
1.18474350932177
1.80828508009957
2002
0.557432817487129
0.826389093535449
1.16490760512527
2803
3528
725
0.487660226800719
0.864661142274775
1.29285605154916
2003
0.592830403761472
0.859082863969743
1.23388041915845
2369
2961
592
0.366095842586693
0.686392385527609
1.0198787551412
2004
0.621715574198986
0.878574118449337
1.24566093792052
2067
2566
499
0.321286598770678
0.571943908843869
0.856334784305758
2005
0.668217068553172
0.912155416572545
1.18297449719488
1527
1883
356
0.242677521909003
0.393484178486643
0.577633603485405
2006
0.761359353962241
1.0402699225997
1.33440149560734
2054
2515
461
0.293669976214525
0.472615105302348
0.712140082806295
2007
0.88913978351963
1.20468375254625
1.5272518712163
2348
2856
508
0.296060793858078
0.471856402137911
0.69601764364655
2008
0.99816384180791
1.33488841140168
1.70469965142495
2894
3496
602
0.340057894848676
0.533363967441061
0.768827898404302
2009
1.09211459015568
1.44487471200807
1.88465952253272
2871
3445
574
0.303889285685881
0.489469425331148
0.712892607381844
2010
1.10407982841077
1.46591480546926
1.84633960900686
3197
3811
614
0.343965896695561
0.536577941741752
0.784207468755463
2011
1.12824047262517
1.4933238204427
1.88999191904996
2738
3264
526
0.285573259778187
0.448349624085281
0.641228806842378
2012
1.2524231148106
1.64082873215158
2.16635359273881
2524
2973
449
0.23187239615164
0.374797602071515
0.543594203653705
2013
1.36521065850822
1.85916988011456
2.51093649577717
2737
3064
327
0.214690912336886
0.349593070240748
0.505519173303135
2014
1.39550356162776
1.86388554961029
2.44925353367549
2500
2809
309
0.198320717750296
0.31781523545028
0.443789696604943
2015
1.31678823568592
1.71666959038364
2.20931377461859
2340
2499
159
0.199048405793844
0.300195851061053
0.42186505755297
2016
1.38257712314218
1.80187959732646
2.27225284451934
2744
2911
167
0.225493761096994
0.33724825435993
0.464501669744768
2017
1.46985426106917
1.95272958262206
2.6704155281725
2594
2787
193
0.181704264778002
0.30400006622152
0.426277081959435
2018
1.32973539157338
1.737207349643
2.24227946263311
3087
3342
255
0.264440117264844
0.402502098988135
0.562386755666195
2019
1.19310093973545
1.57698769202311
2.00889896552869
3197
3381
184
0.286374697521709
0.442134218540002
0.626179528229836
2020
1.13681268400611
1.59564953871762
2.09651660939247
3315
3529
214
0.285511835321605
0.460657041691162
0.667211253290069
2021
1.18167194638839
1.57783739668578
1.99818733758443
3603
3803
200
0.325710003184686
0.502178357789803
0.744708845093376
2022
1.14694631441529
1.55882272737227
2.04923881452812
2420
2507
87
0.207932953736085
0.328349523172359
0.490165873602303
2023
1.09825491178339
1.46059807462664
1.85586050422504
2247
2361
114
0.207156453001722
0.323727489605046
0.466367452925088
2024
1.14091325512233
1.52778213114832
1.95564171643968
1626
1732
106
0.144509742142412
0.227612858624188
0.329183333362706
2025
1.07128381163865
1.55106871655559
2.11616169721841
Custom reference points
Custom fish data column names
Custom fish data
Sensivity data