using a modified Nordmore grid
to sort out fish bycatch in a crustacean fishery
Target species:
Nephrops, rose shrimp and red shrimp
Area, Vessel
5 hauls were carried out in the crustacean fishery on the Portuguese south coast on board the FV Costa Sul (24.0m, 600 HP) during November 2004.
Nephrops, rose shrimp and red shrimp
Area, Vessel
5 hauls were carried out in the crustacean fishery on the Portuguese south coast on board the FV Costa Sul (24.0m, 600 HP) during November 2004.
Gear type:
demersal
Gear modification
Using a modified Nordmore grid with a lower opening passage and a guiding funnel. The system was designed to sort out fish bycatch while retaining crustaceans.
demersal
Gear modification
Using a modified Nordmore grid with a lower opening passage and a guiding funnel. The system was designed to sort out fish bycatch while retaining crustaceans.
Results:
The grid sorted out (i) 93.3% of blue whiting (ii) 86.8% of unmarketable hake (iii) 69.6% of marketable hake (iv) 4.3% of marketable rose shrimp and (v) 5.9% of marketable Nephrops.
The grid sorted out (i) 93.3% of blue whiting (ii) 86.8% of unmarketable hake (iii) 69.6% of marketable hake (iv) 4.3% of marketable rose shrimp and (v) 5.9% of marketable Nephrops.
Further information:
Aida Campos – acampos@ipma.pt Paulo Fonseca – pfonseca@ipma.pt
Aida Campos – acampos@ipma.pt Paulo Fonseca – pfonseca@ipma.pt
Citation :
Campos, A. and Fonseca, P.
, 2017.
using a modified Nordmore grid
. In O’Neill, F.G. and Mutch, K. (Eds): Selectivity in Trawl Fishing Gears. Scottish Marine and Freshwater Science Vol 8 No 1.