Advice and Scenarios Database



Saithe (Pollachius virens) in subareas 4, 6 and Division 3.a (North Sea, Rockall and West of Scotland, Skagerrak and Kattegat)
StockCode
pok.27.3a46
Assessment Year
2019
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
12583
Link to Advice Sheet
NA - The advice link for key 12583 was not found!






Catch scenarios


Basis
Total catch
Wanted catch*
Unwanted catch* (2020)
Wanted catch*# 3a4
Wanted catch*# 6
Ftotal (ages 4–7)
Fwanted (ages 4–7)
Funwanted (ages 4–7)
SSB
% SSB change**
% TAC change***
% advice change^
2020 2020 2020 2020 2020 2020 2020 2020 2021 2021 2021 2021
(t) (t) (t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%) (%)
ICES Basis Advice
MSY approach: FMSY 88093 80676 7417 73092 7584 0.363 0.33 0.032 213159 -1.93 -14.7 -14.7
Other scenarios
F = MAP^^ FMSY lower 54430 49936 4494 45242 4694 0.21 0.191 0.019 245209 12.8 -47 -47
F = MAP^^ FMSY upper 121041 110641 10400 100241 10400 0.536 0.49 0.048 182110 -16.2 17.1 17.1
F = 0 0 0 0 0 0 0 0 0 298215 37 -100 -100
Fpa 104446 95642 8804 86652 8990 0.446 0.41 0.04 197699 -9 1.08 1.08
Flim 135413 123673 11740 112048 11625 0.62 0.56 0.055 168963 -22 31 31
SSB2021 = Blim 203255 184872 18383 167494 17378 1.13 1.03 0.1 107297 -51 97 97
SSB2021 = Bpa 157456 143563 13893 130068 13495 0.76 0.7 0.068 149098 -31 52 52
SSB2021 = MSYBtrigger 157456 143563 13893 130068 13495 0.76 0.7 0.068 149098 -31 52 52
F = F2019 86995 79683 7312 72193 7490 0.36 0.33 0.032 214145 -1.48 -15.8 -15.8
TAC2019 103328 94616 8712 85722 8894 0.44 0.4 0.039 198740 -8.6 0 0
TAC2019 -15% 87828 80436 7392 72875 7561 0.36 0.33 0.032 213398 -1.82 -15 -15
TAC2019 +15% 118826 108650 10176 98437 10213 0.52 0.48 0.047 184174 -15.3 15 15
TAC2019 -20% 82662 75723 6939 68605 7118 0.34 0.31 0.03 218216 0.4 -20 -20
TAC2019 +25% 129159 117952 11207 106865 11087 0.58 0.53 0.052 174816 -19.6 25 25




Symbol Footnotes
* “Wanted” and “unwanted” catch are used to describe fish that would be landed and discarded in the absence of the EU landing obligation.
** SSB2021 relative to SSB2020.
*** Total catch in 2020 relative to the TAC in 2019 (103 327 tonnes).
# Wanted catch split according to the average in 1993–1998. i.e. 90.6% in Subarea 4 and Subdivision 3.a.20 and 9.4% in Subarea 6.
^ Total catch 2020 relative to the advice value 2019 (103 327 tonnes).
^^ EU multiannual plan (MAP) for the North Sea (EU. 2018).