using a grid in a crustacean fishery
to separate crustaceans from fish bycatch
Target species:
Nephrops and rose shrimp
Area, Vessel
18 hauls were carried out in the crustacean fishery on the Portuguese south coast on board the RV Noruega (47.5m, 1500 HP) during July 2005.
Nephrops and rose shrimp
Area, Vessel
18 hauls were carried out in the crustacean fishery on the Portuguese south coast on board the RV Noruega (47.5m, 1500 HP) during July 2005.
Gear type:
demersal
Gear modification
A grid connected to two sections is fitted in the extension section of a crustacean demersal trawl. The grid has a 20 mm bar spacing and is designed to separate crustaceans and fish into a lower and an upper codend where further selection can take place.
demersal
Gear modification
A grid connected to two sections is fitted in the extension section of a crustacean demersal trawl. The grid has a 20 mm bar spacing and is designed to separate crustaceans and fish into a lower and an upper codend where further selection can take place.
Results:
(i) 30% of Nephrops were caught at the upper codend (ii) blue whiting was equally distributed between the two codends.
(i) 30% of Nephrops were caught at the upper codend (ii) blue whiting was equally distributed between the two codends.
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 grid in a crustacean fishery
. In O’Neill, F.G. and Mutch, K. (Eds): Selectivity in Trawl Fishing Gears. Scottish Marine and Freshwater Science Vol 8 No 1.