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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 Component:
Assessment Year:2024
Purpose:Advice
Assessment Key: 19081
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
									Ages 2-4
	thousands			tonnes			tonnes	tonnes	%
1986	63019	73797	52240	3044	3434	2654	1124	284	0.43	0.51	0.35
1987	42022	49415	34630	3817	4284	3350	1688	333	0.39	0.46	0.32
1988	53826	63459	44193	4823	5425	4221	2223	363	0.46	0.54	0.38
1989	54179	63483	44875	5029	5680	4378	2629	408	0.59	0.69	0.50
1990	34541	40604	28478	4349	4972	3726	1945	409	0.47	0.55	0.39
1991	74564	88458	60669	4379	4987	3771	1682	447	0.45	0.52	0.37
1992	64231	75478	52985	4564	5252	3876	1916	437	0.63	0.73	0.54
1993	20062	23698	16425	3912	4467	3357	1384	438	0.51	0.59	0.42
1994	48168	56862	39475	3966	4454	3478	1403	517	0.52	0.60	0.43
1995	57203	66921	47486	3636	4112	3160	1652	406	0.57	0.66	0.48
1996	43551	50583	36520	2774	3194	2354	1098	368	0.50	0.58	0.42
1997	28605	33465	23744	2518	2912	2124	896	308	0.35	0.41	0.28
1998	18744	21995	15492	3633	4159	3106	1123	378	0.44	0.52	0.36
1999	29783	35016	24550	3437	3977	2896	1125	317	0.42	0.50	0.35
2000	33892	39917	27867	2799	3279	2320	1041	373	0.47	0.55	0.38
2001	29920	34783	25056	2438	2920	1956	931	290	0.56	0.66	0.46
2002	37354	43448	31259	2458	2965	1951	720	308	0.35	0.42	0.28
2003	41113	48236	33990	2842	3361	2323	876	191	0.31	0.37	0.25
2004	37464	43933	30996	2937	3441	2433	1006	348	0.40	0.47	0.32
2005	62264	72958	51570	2984	3475	2494	983	375	0.36	0.44	0.29
2006	53009	62126	43892	3611	4251	2972	1092	335	0.37	0.45	0.30
2007	38154	44692	31616	3605	4261	2948	1104	292	0.36	0.44	0.28
2008	28397	33370	23425	4551	5459	3642	980	202	0.24	0.30	0.185
2009	58581	68699	48464	5054	6126	3982	1134	279	0.29	0.35	0.22
2010	41824	48966	34682	5402	6624	4180	1297	265	0.26	0.32	0.20
2011	46284	54426	38142	4875	6051	3700	1128	269	0.27	0.33	0.21
2012	58161	69427	46894	5232	6439	4025	952	369	0.23	0.29	0.180
2013	46997	56953	37041	5297	6573	4021	931	496	0.28	0.35	0.22
2014	77750	95281	60220	5605	7004	4205	1154	788	0.30	0.37	0.23
2015	57227	70167	44287	5617	7134	4101	1148	597	0.31	0.39	0.24
2016	76424	94039	58808	6107	7827	4386	1087	332	0.197	0.25	0.141
2017	51519	63259	39779	6661	8609	4712	927	246	0.172	0.22	0.121
2018	60321	74432	46210	7675	9991	5360	814	92	0.105	0.137	0.073
2019	50430	63471	37389	9738	12719	6757	742	201	0.112	0.143	0.080
2020	56916	75116	38715	10776	14000	7553	711	81	0.081	0.102	0.059
2021	27427	40858	13996	12734	16509	8959	722	109	0.082	0.104	0.060
2022	42033	73758	10307	13947	17901	9993	644	119	0.077	0.098	0.056
2023	48918	106554	0	15087	19338	10836	707	79	0.072	0.093	0.052
2024	43822			14759
Average	47146	58476	36220	5556	6515	4112	1177	328	0.34	0.41	0.28

Fishing pressure

Stock size

2021

2022

2023

2022

2023

2024

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

Below

B_MGT

Above trigger