ICES Marine Data

Stock Assessment Graphs

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

Thornback ray (Raja clavata) in Subarea 4 and in divisions 3.a and 7.d (North Sea, Skagerrak, Kattegat, and eastern English Channel)	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: Raja clavata
Stock code: rjc.27.3a47d
Assessment Component:
Assessment Year:2025
Purpose:Advice
Assessment Key: 21096
Stock Key: 169203

Year	Relative exploitable biomass	97.5%	2.5%	Landings	Discards	Relative fishing pressure	97.5%	2.5%

				tonnes	tonnes	ratio
1989	0.295	0.546	0.159			2.2	3.5	1.40
1990	0.283	0.505	0.158			2.3	3.5	1.49
1991	0.266	0.468	0.151			2.3	3.4	1.56
1992	0.248	0.433	0.142			2.3	3.3	1.61
1993	0.23	0.401	0.132			2.2	3.1	1.60
1994	0.214	0.371	0.123			2.1	2.9	1.55
1995	0.201	0.349	0.116			1.99	2.7	1.47
1996	0.196	0.338	0.114			1.87	2.5	1.39
1997	0.196	0.335	0.115			1.78	2.4	1.33
1998	0.196	0.333	0.115			1.68	2.2	1.26
1999	0.195	0.333	0.115	1375	304	1.62	2.1	1.22
2000	0.199	0.338	0.117	1623	359	1.62	2.2	1.21
2001	0.203	0.345	0.12	1720	380	1.60	2.2	1.18
2002	0.208	0.352	0.123	1727	382	1.54	2.1	1.12
2003	0.213	0.36	0.126	1721	381	1.43	2.00	1.02
2004	0.221	0.373	0.131	1584	350	1.28	1.82	0.90
2005	0.231	0.392	0.136	1331	294	1.13	1.63	0.78
2006	0.245	0.42	0.143	1296	287	1.02	1.48	0.70
2007	0.267	0.46	0.155	1389	307	0.91	1.34	0.62
2008	0.296	0.512	0.171	1335	295	0.81	1.20	0.54
2009	0.328	0.573	0.188	1127	284	0.73	1.09	0.48
2010	0.363	0.642	0.205	1323	314	0.66	0.99	0.45
2011	0.404	0.723	0.226	1278	274	0.62	0.92	0.42
2012	0.461	0.825	0.258	1584	268	0.62	0.91	0.43
2013	0.533	0.947	0.3	1852	350	0.61	0.88	0.42
2014	0.602	1.067	0.339	1905	319	0.55	0.80	0.38
2015	0.672	1.189	0.38	1665	424	0.50	0.73	0.34
2016	0.739	1.303	0.419	1808	390	0.49	0.71	0.33
2017	0.804	1.413	0.457	1789	672	0.48	0.70	0.33
2018	0.863	1.511	0.494	2219	347	0.48	0.69	0.33
2019	0.934	1.617	0.539	2213	571	0.47	0.67	0.32
2020	1.008	1.722	0.59	2243	560	0.45	0.65	0.31
2021	1.055	1.781	0.624	2239	628	0.42	0.62	0.29
2022	1.07	1.799	0.636	1965	511	0.41	0.60	0.28
2023	1.102	1.836	0.661	2159	590	0.43	0.63	0.30
2024	1.17	1.894	0.723	2940	521	0.46	0.69	0.31
2025	1.216	1.909	0.775
Average	0.485	0.83	0.283	1747	399	1.17	1.66	0.82

Fishing pressure

Stock size

2022

2023

2024

2023

2024

2025

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