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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 Year:2021
Purpose:Advice
Assessment Key: 14538
Stock Key: 169138

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

	ratio			tonnes	tonnes	ratio
1985	2.354	3.683	1.143	4499	1928	0.67	1.20	0.37
1986	1.647	2.275	1.034	2858	1193	0.53	0.84	0.32
1987	1.544	2.075	1.006	4614	1874	0.93	1.38	0.55
1988	1.441	2.038	0.914	5212	2061	1.14	1.74	0.65
1989	1.164	1.619	0.768	3451	1327	0.87	1.34	0.50
1990	1.063	1.465	0.716	3047	1140	0.82	1.28	0.46
1991	0.997	1.374	0.682	3310	1204	0.95	1.44	0.53
1992	1.055	1.478	0.701	3574	1263	0.97	1.49	0.53
1993	1.134	1.599	0.757	3802	1305	0.96	1.46	0.54
1994	1.246	1.793	0.825	3900	1300	0.90	1.36	0.48
1995	1.272	1.877	0.829	4670	1511	1.07	1.64	0.56
1996	1.229	1.853	0.788	5253	1649	1.27	1.99	0.62
1997	1.029	1.455	0.695	4856	1478	1.37	2.1	0.71
1998	0.986	1.415	0.658	4253	1254	1.22	1.85	0.62
1999	0.953	1.383	0.619	3759	1074	1.09	1.68	0.55
2000	0.891	1.305	0.578	3494	966	1.06	1.65	0.54
2001	0.824	1.168	0.55	3571	956	1.17	1.78	0.61
2002	0.846	1.227	0.536	2803	725	0.86	1.37	0.43
2003	0.882	1.315	0.561	2369	592	0.68	1.09	0.34
2004	0.884	1.279	0.584	2067	499	0.58	0.90	0.30
2005	0.884	1.184	0.617	1527	356	0.41	0.64	0.24
2006	1.007	1.342	0.692	2054	461	0.49	0.79	0.29
2007	1.152	1.548	0.796	2348	508	0.50	0.77	0.28
2008	1.283	1.707	0.909	2894	602	0.56	0.86	0.33
2009	1.403	1.861	0.971	2871	574	0.51	0.77	0.30
2010	1.416	1.864	0.992	3197	614	0.56	0.85	0.33
2011	1.455	1.94	1.036	3257	600	0.55	0.85	0.34
2012	1.575	2.129	1.128	2545	449	0.42	0.64	0.26
2013	1.783	2.495	1.23	2737	327	0.37	0.55	0.21
2014	1.792	2.464	1.251	2500	309	0.33	0.51	0.20
2015	1.664	2.165	1.209	2471	152	0.33	0.47	0.20
2016	1.753	2.318	1.266	2792	167	0.36	0.52	0.22
2017	1.899	2.745	1.361	2594	193	0.32	0.46	0.185
2018	1.693	2.241	1.202	3003	255	0.41	0.60	0.25
2019	1.556	2.017	1.1	3197	184	0.45	0.67	0.28
2020	1.563	2.09	1.069	3316	214	0.47	0.74	0.29
2021	1.465	2.068	0.966
Average	1.319	1.834	0.885	3296	868	0.73	1.12	0.40

Fishing pressure

Stock size

2018

2019

2020

2019

2020

2021

Maximum sustainable yield

F_MSY

Appropriate

MSY B_trigger

Above trigger

Precautionary approach

F_pa,F_lim

Undefined

B_pa,B_lim

Full reproductive capacity

Management plan

F_MGT

Not applicable

B_MGT

Not applicable