ICES Marine Data

Stock Assessment Graphs

	Stock assessment graphs > View list of published graphs and tables > View published graphs and tables

Megrim (Lepidorhombus spp.) in divisions 4.a and 6.a (northern North Sea, West of Scotland) (Link to advice)	Download graphs and tables(.doc) Download stock data (XML) Download standard graphs (zip) - regular size Download standard graphs (zip) - powerpoint size View on the map View source data

Species: Lepidorhombus
Stock code: lez.27.4a6a
Assessment Component:
Assessment Year:2026
Purpose:Advice
Assessment Key: 23776
Stock Key: 169138

Year	B/Bmsy	97.5%	2.5%	Landings	Discards	F/Fmsy	97.5%	2.5%

	tonnes			tonnes	tonnes	ratio
1972	0.58	1.48	0.23	2784	1193	1.08	2.4	0.49
1973	0.61	1.51	0.24	2882	1235	1.13	2.5	0.52
1974	0.67	1.65	0.28	3507	1503	1.12	2.4	0.52
1975	0.67	1.6	0.28	2878	1233	1.06	2.3	0.50
1976	0.68	1.59	0.29	3439	1474	1.14	2.4	0.54
1977	0.74	1.69	0.32	3592	1539	1.13	2.4	0.54
1978	0.75	1.67	0.34	3594	1540	1.10	2.3	0.53
1979	0.74	1.6	0.34	3419	1465	1.10	2.2	0.54
1980	0.78	1.62	0.37	3843	1647	1.11	2.2	0.55
1981	0.78	1.58	0.39	3392	1454	1.00	1.98	0.50
1982	0.73	1.41	0.38	2960	1269	0.96	1.84	0.50
1983	0.75	1.36	0.41	3302	1415	1.02	1.91	0.54
1984	0.84	1.43	0.49	4045	1734	1.13	2.1	0.61
1985	0.94	1.54	0.58	4499	1928	1.02	1.90	0.55
1986	0.79	1.23	0.51	2858	1193	1.03	1.89	0.56
1987	0.76	1.14	0.51	4614	1874	1.40	2.6	0.75
1988	0.87	1.32	0.58	5212	2061	1.40	2.7	0.73
1989	0.69	1.04	0.46	3451	1327	1.24	2.4	0.65
1990	0.57	0.86	0.38	3047	1140	1.24	2.4	0.66
1991	0.56	0.83	0.38	3310	1204	1.23	2.3	0.66
1992	0.63	0.91	0.43	3574	1263	1.14	2.1	0.61
1993	0.73	1.06	0.51	3802	1305	1.05	1.95	0.56
1994	0.79	1.15	0.55	3900	1300	1.02	1.89	0.55
1995	0.92	1.34	0.63	4670	1511	1.07	2.0	0.57
1996	1.02	1.49	0.7	5253	1649	1.06	2.0	0.55
1997	1.04	1.53	0.71	4856	1478	0.87	1.65	0.46
1998	1.1	1.6	0.75	4253	1254	0.64	1.21	0.34
1999	1.36	1.99	0.93	3759	1074	0.50	0.95	0.27
2000	1.52	2.21	1.04	3494	966	0.48	0.90	0.25
2001	1.58	2.28	1.09	3571	956	0.44	0.83	0.23
2002	1.5	2.16	1.04	2803	725	0.38	0.71	0.20
2003	1.41	2.03	0.98	2369	592	0.36	0.69	0.193
2004	1.24	1.79	0.86	2067	499	0.32	0.61	0.170
2005	1.07	1.54	0.75	1527	356	0.29	0.54	0.155
2006	1.22	1.73	0.86	2054	461	0.30	0.55	0.160
2007	1.52	2.14	1.08	2348	508	0.29	0.53	0.156
2008	1.85	2.59	1.32	2894	602	0.29	0.53	0.154
2009	1.99	2.79	1.43	2871	574	0.28	0.51	0.148
2010	2.16	3.03	1.54	3197	614	0.24	0.45	0.130
2011	2.46	3.47	1.75	2738	526	0.193	0.36	0.104
2012	2.62	3.67	1.87	2524	449	0.181	0.33	0.098
2013	2.89	4.09	2.04	2737	327	0.198	0.37	0.107
2014	2.35	3.29	1.68	2500	309	0.21	0.39	0.112
2015	2.05	2.87	1.47	2340	159	0.22	0.41	0.119
2016	1.99	2.8	1.42	2744	167	0.24	0.44	0.130
2017	1.96	2.77	1.39	2594	193	0.27	0.50	0.146
2018	1.82	2.56	1.29	3087	255	0.33	0.61	0.175
2019	1.71	2.42	1.21	3197	184	0.36	0.67	0.193
2020	1.53	2.18	1.08	3315	214	0.40	0.74	0.21
2021	1.58	2.23	1.11	3603	200	0.36	0.67	0.190
2022	1.41	2.02	0.99	2420	87	0.30	0.57	0.163
2023	1.32	1.86	0.93	2247	114	0.27	0.51	0.148
2024	1.21	1.7	0.85	1626	106	0.24	0.44	0.128
2025	1.13	1.6	0.8	1360	251	0.23	0.44	0.124
2026	1.12	1.64	0.77
Average	1.24	1.9	0.83	3202	938	0.70	1.35	0.36

Fishing pressure

Stock size

2023

2024

2025

2024

2025

2026

Maximum sustainable yield

F_MSY

Below

MSY B_trigger

Above trigger

Precautionary approach

F_pa

Undefined

B_pa,B_lim

Full reproductive capacity

Management plan

F_MGT

Not applicable

B_MGT

Not applicable