Use of an escape grid

to optimise the size selectivity of Pandalus borealis

Target species:
Northern prawn (Pandalus borealis)

Area, Vessel
The trial took place in the Skagerrak (ICES IIIa) on board S486 Sajoni (28 m, 746 kW)
Gear type:
demersal

Gear modification
A gear with a grid consisting of two sections, a lower (10 mm bar spacing) and an upper section (19 mm bar spacing) was tested with a standard gear that had a grid with a 19 mm bar spacing


Results:
Shrimp catches in the two gears were very similar and there was no significant difference across all length classes. Underwater observations showed there were large issues with clogging of the escape grid.
Further information:
Jordan Feekings (jpfe@aqua.dtu.dk)




Citation :
, 2017. Use of an escape grid . In O’Neill, F.G. and Mutch, K. (Eds): Selectivity in Trawl Fishing Gears. Scottish Marine and Freshwater Science Vol 8 No 1.