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Thornback ray (Raja clavata) in Division 8.c (Cantabrian Sea) (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: Raja clavata
Stock code: rjc.27.8c
Assessment Year:2022
Purpose:Advice
Assessment Key: 17481
Stock Key: 252350

Year	Biomass index	Mean + SE	Mean - SE	Landings	Discards

	Kilograms per hour			tonnes	tonnes
1988	2.02	2.72	1.33
1989	0.35	0.46	0.23
1990	1.67	2.27	1.07
1991	0.78	1.02	0.54
1992	0.6	0.9	0.3
1993	0.65	0.93	0.37
1994	0.62	0.93	0.31
1995	0.26	0.38	0.14
1996	1.02	1.67	0.57
1997	1.28	1.81	0.75
1998	1.25	1.76	0.74
1999	1.59	2.39	0.79
2000	3.48	4.59	2.36
2001	3.28	4.54	2.01
2002	1.75	2.39	1.1
2003	2.17	3.22	1.12
2004	2.81	3.61	2.01
2005	2.64	3.44	1.84
2006	3.55	4.39	2.71
2007	3.36	4.3	2.42
2008	2.64	3.55	1.73
2009	3.22	4.14	2.3	94	28
2010	2.81	3.63	1.99	186	31
2011	3.47	4.21	2.74	206	29
2012	3.82	4.8	2.84	224	21
2013	8.86	11.01	6.72	238	37
2014	4.86	6.14	3.59	248	73
2015	5.62	7.28	3.95	146	87
2016	4.33	5.75	2.91	154	61
2017	5.57	7.44	3.7	136	13
2018	3.97	4.97	2.97	256	28
2019	4.33	5.55	3.11	247	31
2020	3.28	3.92	2.63	257	61
2021				233	33
Average	2.79	3.64	1.94	202	41

Fishing pressure

Stock size

2019

2020

2021

2019

2020

2021

Maximum sustainable yield

F_{MSY proxy}

Below proxy

MSY B_{trigger proxy}

Unknown

Precautionary approach

F_pa,F_lim

Unknown

B_pa,B_lim

Undefined

Management plan

F_MGT

Not applicable

B_MGT

Not applicable