SciELO - Scientific Electronic Library Online

 
vol.28Estimación de abundancia y biomasa del cangrejo dorado (Chaceon chilensis), en el archipiélago de Juan Fernández, ChileComposición de las capturas de la langosta de Juan Fernández (Jasus frontalis) y determinación de parámetros biológico-pesqueros durante la temporada de pesca 1996-1997 índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Investigaciones marinas

versión On-line ISSN 0717-7178

Resumen

ARANA, Patricio M.  y  VEGA, Rodrigo. Experimental fishing survey of golden crab (Chaceon chilensis) in the  Juan Fernandez archipelago, Chile. Investig. mar. [online]. 2000, vol.28, pp. 68-81. ISSN 0717-7178.  http://dx.doi.org/10.4067/S0717-71782000002800007.

Between March and June 1997, several experiments were conducted to determine the most suitable gear for the capture of the golden crab (Chaceon chilensis) in surrounding waters of the Juan Fernandez archipelago (Chile). During this period, 45 fishing journeys and 446 traps were held, obtaining a total catch of 2630 specimens, equivalent to 2353 kg. The experimental fishing operations were done comparing seven trap designs: a) Conical trunk with upper rectangular entrance, b) Conical trunk with upper circular entrance, c) Conical trunk with upper plastic tunnel opening, d) Tetragonal with two lateral rectangular openings, e) Tetragonal with two lateral circular openings, f) Lobster-type with one end opening, and g) Lobster-type with one upper opening. The first five were constructed with steel frames and covered with 1,5 inch mesh netting, and the last two, were the ones commonly used by the fishermen of these islands, built with wood from local trees. Trap designs with which the largest yields were obtained were the conical trunk with plastic tunnel (7,08 crabs/trap) and the lobster-type (5,08 kg/trap), both with openings in the upper part. It was also determined that there were significant differences in yields by depth stratum, with maximum values (7,52 kg/trap) in the range of 526-575 m and minimum (4,04 kg/trap), between 226 and 275 m. Results showed that it is feasible to commercially exploit this crab

Palabras clave : experimental fishing; golden crab; Chaceon chilensis; Juan Fernandez archipelago; Chile.

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