increasing the mesh size of a diamond mesh codend
to reduce capture of undersized fish in Mediterranean bottom trawls
Target species:
Red mullet, European hake, little squid and all marketable species.
Area, Vessel
68 hauls took place during 2005 on board the RV “G. Dallaporta” (810 kW; 35.30 m; 285 GT) in the Central Adriatic.
Red mullet, European hake, little squid and all marketable species.
Area, Vessel
68 hauls took place during 2005 on board the RV “G. Dallaporta” (810 kW; 35.30 m; 285 GT) in the Central Adriatic.
Gear type:
demersal trawl
Gear modification
The catches from a Mediterranean demersal trawl with (i) 48 mm diamond mesh codend and (ii) 56 mm diamond mesh codend are compared.
demersal trawl
Gear modification
The catches from a Mediterranean demersal trawl with (i) 48 mm diamond mesh codend and (ii) 56 mm diamond mesh codend are compared.
Results:
Increasing the mesh size from 48 to 56 mm (i) increased the selectivity of European hake by 42% and 15% (ii) increased the selectivity of red mullet by 19% and 33% (iii) increased the selectivity of little squid by 16% and 22%.
Increasing the mesh size from 48 to 56 mm (i) increased the selectivity of European hake by 42% and 15% (ii) increased the selectivity of red mullet by 19% and 33% (iii) increased the selectivity of little squid by 16% and 22%.
Further information:
a.sala@ismar.cnr.it
a.sala@ismar.cnr.it
Citation :
Sala, A.
, 2017.
increasing the mesh size of a diamond mesh codend
. In O’Neill, F.G. and Mutch, K. (Eds): Selectivity in Trawl Fishing Gears. Scottish Marine and Freshwater Science Vol 8 No 1.