STARRY RAY Amblyraja radiata

Advice 2024/2025

818

tonnes

Advice 2023/2024

822

tonnes

Advice change

0 %

Publication of Advice: 7. June 2024. Published by Marine and Freshwater Research Institute.


Advice

MFRI advises in accordance with the MSY approach that catches in the fishing year 2024/2025 should be no more than 818 tonnes.

Stock development

Fishing pressure is below Flim and above FMSY. Stock biomass is above Blim and Btrigger.

0.0 0.5 1.0 1.5 1985 1990 1995 2000 2005 2010 2015 2020 Thous. tonnes B o t t o m t r a w l D e m e r s a l s e i n e L o n g l i n e O t h e r a n d u n d e f i n e d g e a r Catches B p a B l i m 0.0 0.5 1.0 1.5 1986 1991 1996 2001 2006 2011 2016 2021 B/Bmsy Biomass F l i m F M S Y 0 1 2 3 1985 1988 1991 1994 1997 2000 2003 2006 2009 2012 2015 2018 2021 F/Fmsy Fishing mortality

Starry ray. Catches, changes in relative biomass (B/BMSY) and relative fishing mortality (F/FMSY). Shaded areas represent 95% CI.

Basis of the assessment and reference points

Prospects

Starry ray. Assumptions made for the interim year and in the forecast.

Starry ray. Projection of biomass (tonnes) based on the MSY approach.

Quality of the assessment

The basis for the assessment was changed in 2023. The assessment is now based on a surplus production model (SPiCT). The input data for the assessment model are total catch and standardized survey indices (IS-SMB). The IS-SMB covers the main fishing grounds of starry ray.

F M S Y F l i m B p a B l i m F i s h i n g m o r t a l i t y S S B 2012 2016 2020 2024 2012 2016 2020 2024 0.00 0.25 0.50 0.75 1.00 1.25 0.0 0.5 1.0 1.5

Starry ray Current assessment (red line) compared with previous estimate 2023.

Advice, tac and catch

Starry ray. Recommended TAC, national TAC, and catch (tonnes).

References and further reading

Pedersen, M. W., & Berg, C. W. (2017). A stochastic surplus production model in continuous time. Fish and Fisheries, 18(2), 226-243.

ICES. 2022. ICES technical guidance for harvest control rules and stock assessments for stocks in categories 2 and 3. In Report of ICES Advisory Committee, 2022. ICES Advice 2022, Section 16.4.11. https://doi.org/10.17895/ices.advice.19801564

MFRI Assessment Reports 2024. Starry ray. Marine and Freshwater Research Institute, 7 June 2024.