SciELO - Scientific Electronic Library Online

 
vol.40 número1Efecto de la radiación ultravioleta B en la producción de polifenoles en la microalga marina Chlorella sp.La hipótesis territorial predice la compensación entre las oportunidades reproductivas y el cuidado parental en tres especies de peces damisela (Pomacentridae: Actinopterygii) índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Latin american journal of aquatic research

versión On-line ISSN 0718-560X

Resumen

SILVA¹, Catarina N.S; DIAS, José H; CATTANI, André P  y  SPACH, Henry L. Relative efficiency of square-mesh codends in an artisanal fishery in southern Brazil. Lat. Am. J. Aquat. Res. [online]. 2012, vol.40, n.1, pp. 124-133. ISSN 0718-560X.  http://dx.doi.org/10.4067/S0718-560X2012000100012.

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 Paraná, 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 Paraná, Brazil.

Palabras clave : discards; shrimp fishery; bycatch reduction devices; square-mesh; size selection; fisheries management; southern Brazil.

        · resumen en Español     · texto en Inglés     · pdf en Inglés