%0 Journal Article
%T Relative efficiency of square-mesh codends in an artisanal fishery in southern Brazil
%A Silva1
%A Catarina N.S
%A Dias
%A Jos¨¦ H
%A Cattani
%A Andr¨¦ P
%A Spach
%A Henry L
%J Latin american journal of aquatic research
%D 2012
%I Pontificia Universidad Cat¨®lica de Valpara¨ªso
%X the relative efficiency of two square-mesh codend designs with the same circumference (~2 m) but different mesh sizes and materials (32 mm polyethylene-pe and 30 mm polyamide-pa) was tested in an artisanal shrimp trawl fishery in paran¨¢, southern brazil. the two square-mesh codends were hauled alternately with a 26 mm diamond-shaped mesh codend (control) in a twin gear configuration. although not significant, the mean numbers of total bycatch were reduced by 16.6 and 10.0% with the 32 and 30 mm square-mesh codends, respectively. the results indicate significant improvement in size selectivity for some species (xiphopenaeus kroyeri and stellifer rastrifer). the operational changes tested can be a suitable technical solution for reducing the capture of immature organisms in the shrimp trawl fishery in paran¨¢, brazil.
%K discards
%K shrimp fishery
%K bycatch reduction devices
%K square-mesh
%K size selection
%K fisheries management
%K southern brazil.
%U http://www.scielo.cl/scielo.php?script=sci_abstract&pid=S0718-560X2012000100012&lng=en&nrm=iso&tlng=en