Advice and Scenarios Database



Haddock (Melanogrammus aeglefinus) in Division 7.a (Irish Sea)
StockCode
had.27.7a
Assessment Year
2018
Stock Category
1
Purpose
Advice
Published
Stock Assessment Key
9950
Link to Advice Sheet
https://doi.org/10.17895/ices.pub.4452






Catch scenarios


Basis
Total catch
Wanted catch* (2019)
Unwanted catch*
Ftotal
Fwanted
Funwanted
SSB
% SSB change **
% TAC change ***
% Advice change ^
2019 2019 2019 2019 2019 2019 2020 2020 2019 2019
(t) (t) (t) (ratio) (ratio) (ratio) (t) (%) (%) (%)
ICES Basis Advice
MSY approach: FMSY 3739 3334 405 0.28 0.21 0.07 13095 -25 16.6 9
Other scenarios
FMSYlower 2764 2468 296 0.2 0.15 0.05 14137 -18.5 -13.8 -19.7
FMSYupper 4536 4041 495 0.35 0.27 0.08 12248 -29 41 32
F = 0 0 0 0 0 0 0 17127 -1.32 -100 -100
Fpa 4863 4330 533 0.38 0.29 0.09 11902 -31 52 41
Flim 6088 5411 677 0.5 0.38 0.12 10614 -39 90 77
SSB2020 = Blim 13863 12075 1788 1.85 1.41 0.44 2994 -83 332 303
SSB2020 = Bpa 12564 11001 1564 1.49 1.14 0.35 4160 -76 292 265
SSB2020 = MSYBtrigger 12434 10891 1542 1.46 1.12 0.34 4281 -75 288 261
F = F2018 1773 1585 188 0.12 0.09 0.03 15204 -12.4 -45 -49




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, based on discard rate estimates for 2015–2017.
** SSB 2020 relative to SSB 2019.
*** Total catch in 2019 relative to TAC in 2018 (3207tonnes).
^ Advice value for 2019 relative to advice value for 2018 (3444tonnes).