Advice and Scenarios Database



Spurdog (Squalus acanthias) in subareas 1-10, 12 and 14 (the Northeast Atlantic and adjacent waters)
StockCode
dgs.27.nea
Assessment Year
2022
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
17491
Link to Advice Sheet
https://doi.org/10.17895/ices.advice.19753588.v1






Catch scenarios


Basis
catch
catch
Harvest rate* (ages 5–30)
Harvest rate* (ages 5–30)
Btot
Btot
% Btot change re. to 2023
% Btot change rel. to 2023
% advice change***
2023 2024 2023 2024 2023 2024 2024 2025 2034
(t) (t) (ratio) (ratio) (t) (t) (%) (%) (%)
ICES Basis Advice
MSY approach, HR = HRMSY 17353 17855 0.044 0.044 571234 577201 1.24 2.3
Other scenarios
HR = 0 0 0 0 0 588776 612807 4.4 8.6
HRsq 1315 1399 0.003 0.003 587446 610058 4.1 8.1
Harvest rate = HRpa 19663 20117 0.05 0.049 568898 572571 0.83 1.48
Harvest rate = HRlim 27528 27622 0.069 0.069 560941 556990 -0.58 -1.28




Symbol Footnotes
* Harvest rates differ slightly between years owing to differences in age structure over time.
** Total biomass for 2024 or 2025 relative to the total biomass for 2023.
*** Advice value for 2023 and 2024 relative to advice value for 2021 and 2022 (0 tonnes).