ICES Marine Data

Stock Assessment Graphs

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

Four-spot megrim (Lepidorhombus boscii) in divisions 8.c and 9.a (southern Bay of Biscay and Atlantic Iberian waters East) (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 boscii
Stock code: ldb.27.8c9a
Assessment Year:2022
Purpose:Advice
Assessment Key: 17379
Stock Key: 169140

Year	Recruitment (age 0)	Mean + 2*SD	Mean - 2*SD	SSB	Mean + 2*SD	Mean - 2*SD	Landings	Discards	F	Mean + 2*SD	Mean - 2*SD

	Number of individuals (fisheries)			tonnes			tonnes	tonnes
1986	64015	74909	53120	3034	3422	2645	1124	284	0.43	0.51	0.35
1987	42845	50427	35262	3803	4275	3332	1688	333	0.39	0.46	0.32
1988	54812	64668	44956	4804	5413	4194	2223	363	0.46	0.54	0.39
1989	54992	64503	45481	5008	5669	4347	2629	408	0.60	0.69	0.50
1990	35121	41355	28886	4323	4963	3683	1945	409	0.48	0.56	0.39
1991	75915	89999	61831	4352	4978	3726	1682	447	0.45	0.53	0.37
1992	65257	76803	53711	4526	5241	3812	1916	437	0.63	0.73	0.54
1993	20398	24142	16654	3883	4455	3312	1384	438	0.51	0.59	0.43
1994	48992	58007	39977	3944	4445	3443	1403	517	0.52	0.61	0.44
1995	57993	67937	48049	3612	4103	3122	1652	406	0.57	0.66	0.48
1996	44066	51194	36939	2756	3189	2323	1098	368	0.50	0.59	0.42
1997	29004	33937	24070	2499	2907	2091	896	308	0.35	0.42	0.29
1998	19002	22279	15725	3606	4153	3058	1123	378	0.44	0.52	0.36
1999	30271	35607	24935	3405	3970	2840	1125	317	0.42	0.50	0.35
2000	34347	40496	28199	2775	3276	2275	1041	373	0.47	0.55	0.39
2001	30174	35107	25241	2414	2920	1908	931	290	0.56	0.67	0.46
2002	37729	43890	31568	2430	2966	1894	720	308	0.35	0.42	0.28
2003	41618	48952	34284	2813	3356	2269	876	191	0.31	0.38	0.25
2004	37882	44528	31236	2910	3437	2383	1006	348	0.40	0.48	0.32
2005	62932	73898	51966	2960	3473	2447	983	375	0.37	0.44	0.29
2006	53446	62681	44211	3582	4260	2904	1092	335	0.38	0.45	0.30
2007	38465	45197	31733	3577	4270	2883	1104	292	0.36	0.45	0.28
2008	28638	33693	23583	4510	5478	3542	980	202	0.24	0.30	0.185
2009	58976	69210	48743	5006	6148	3863	1134	279	0.29	0.36	0.22
2010	42113	49339	34886	5350	6658	4042	1297	265	0.26	0.33	0.20
2011	46711	55008	38413	4827	6087	3568	1128	269	0.27	0.34	0.21
2012	58851	70488	47213	5180	6474	3886	952	369	0.24	0.29	0.180
2013	47725	58053	37397	5241	6609	3873	931	496	0.28	0.35	0.22
2014	79002	97012	60993	5547	7043	4051	1154	788	0.30	0.37	0.23
2015	57962	70775	45150	5567	7183	3951	1148	597	0.31	0.39	0.24
2016	80149	98514	61784	6075	7895	4255	1087	332	0.197	0.26	0.139
2017	49510	61879	37141	6651	8700	4602	927	246	0.171	0.22	0.120
2018	47715	62675	32755	7705	10108	5302	814	92	0.105	0.136	0.073
2019	37332	55397	19268	9803	12858	6748	742	201	0.110	0.141	0.079
2020	34906	60404	9408	10743	13980	7506	711	81	0.080	0.103	0.058
2021	16219	36308	-3870	12329	16060	8598	722	109	0.089	0.115	0.063
2022	43826			12259
Average	46187	56369	36136	4968	5845	3686	1205	340	0.36	0.43	0.29

Fishing pressure

Stock size

2019

2020

2021

2020

2021

2022

Maximum sustainable yield

F_MSY

Appropriate

MSY B_trigger

Above trigger

Precautionary approach

F_pa,F_lim

Harvested sustainably

B_pa,B_lim

Full reproductive capacity

Management plan

F_MGT

Not applicable

B_MGT

Not applicable