Latin american journal of aquatic research
versión On-line ISSN 0718-560X
IBARRA, Mauricio y ARANA, Patricio M. Growth of burrowing crayfish Parastacus pugnax (Poeppig, 1835) determined by marking technique. Lat. Am. J. Aquat. Res. [online]. 2011, vol.39, n.2, pp. 378-384. ISSN 0718-560X. http://dx.doi.org/10.4067/S0718-560X2011000200018.
A modified tag belt type was used in the burrowing crayfish (Parastacus pugnax), in the central-south of Chile. The parameters asymptotic carapace length (Lc0) and rate of increase (K) were determined through the Gulland & Holt (1959) method. The parameter t0 was determined by the inverse equation of von Bertalanffy model, which allowed to establish that the growth curves in length and weight are defined by the parameters K = 0.35 mm yr-1, t0 = -0.38 years, Lc∞ = 55. 9 mm and W∞= 83.8 g. These values were similar to those of Samastacus spinifrons, Chilean species with high potential for aquaculture, and similar to those of other South American parastacids such as P. brasiliensis and P. deffosus.
Palabras clave : growth; mark-recapture; burrowing crayfish; Parastacus pugnax; Chile.