Abstract

CISNEROS, Rosario; BAUTISTA, Jorge  and  ARGUELLES, Juan. Comparative growth of peruvian scallop (Argopecten purpuratus) in suspended systems. Ecol. apl. [online]. 2008, vol.7, n.1-2, pp.81-87. ISSN 1726-2216.

In order to determine differences in growth of the Peruvian scallop Argopecten purpuratus from different areas, two comparative experiments in suspended systems, such as pearl-nets and lantern nets, were carried out. The first one, was performed with seeds obtained from the hatchery at IMARPE, and wild seeds collected at Independence Bay, Pisco; the second one, was done with wild seeds from Samanco Bay and Lagunillas, Pisco. The study was carried out in Playa "El Carbón", Pucusana. For both experiments growth rates, K and L∞, parameters, growth rate (Φ) and condition factor, were estimated. An analysis of covariance (ANCOVA) and a t-test to compare the regression curves of the length-weight relationship were applied. The results showed differences in growth rates and condition factor, among the studied groups. In all cases the growth rates are comparable with values estimated by other authors. It is argued that differences estimated are due to a genetic variability among populations from different seed sources.

Keywords : culture; Argopecten purpuratus; parameters; growth; length.

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