diamond and square mesh codends
to improve the selectivity of the Mediterranean bottom trawl fishery
Target species:
striped red mullet, hake, Norway lobster and red shrimp
Area, Vessel
31 pairs of hauls were carried out at depths of between 50 and 800 m in the Balearic Islands multispecies bottom trawl fishery on board the F/V Moralti Nou (22 m).
striped red mullet, hake, Norway lobster and red shrimp
Area, Vessel
31 pairs of hauls were carried out at depths of between 50 and 800 m in the Balearic Islands multispecies bottom trawl fishery on board the F/V Moralti Nou (22 m).
Gear type:
demersal
Gear modification
The catching performance of codends made of (i) 40 mm diamond mesh and (ii) 40 mm square mesh were compared.
demersal
Gear modification
The catching performance of codends made of (i) 40 mm diamond mesh and (ii) 40 mm square mesh were compared.
Results:
There were no differences in the commercial landings and economic yields for the main target species, but picarel landings decreased by 80% in the 40 mm square mesh codend. There were large reductions in the discards of algae (70%) and fish (50%) on the coastal and deep shelf respectively, when using the 40 mm square mesh codend. With the exception of megrim, monkfish and skates, fewer smaller fish were caught in the 40 mm square mesh codend.
There were no differences in the commercial landings and economic yields for the main target species, but picarel landings decreased by 80% in the 40 mm square mesh codend. There were large reductions in the discards of algae (70%) and fish (50%) on the coastal and deep shelf respectively, when using the 40 mm square mesh codend. With the exception of megrim, monkfish and skates, fewer smaller fish were caught in the 40 mm square mesh codend.
Further information:
enric.massuti@ba.ieo.es; toni.quetglas@ba.ieo.es Guijarro B. and E. Massutí.- 2006. Selectivity of diamond- and square-mesh codends in the deepwater crustacean trawl fishery off the Balearic Islands (western Mediterranean). ICES Journal of Marine Science, 62: 52-67.
enric.massuti@ba.ieo.es; toni.quetglas@ba.ieo.es Guijarro B. and E. Massutí.- 2006. Selectivity of diamond- and square-mesh codends in the deepwater crustacean trawl fishery off the Balearic Islands (western Mediterranean). ICES Journal of Marine Science, 62: 52-67.
Citation :
Guijarro, B. and Massuti, E.
, 2017.
diamond and square mesh codends
. In O’Neill, F.G. and Mutch, K. (Eds): Selectivity in Trawl Fishing Gears. Scottish Marine and Freshwater Science Vol 8 No 1.