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Investigaciones marinas

On-line version ISSN 0717-7178


CAICEDO, Julián A; RUBIO, Efraín A; ZAPATA, Luis A  and  GIRALDO, Alan. Growth estimate of Lutjanus peru (Pisces: Lutjanidae) from experimental small-scale fisheries in Gorgona National Natural Park and its area of infiuence in the Pacific Ocean off Colombia. Investig. mar. [online]. 2006, vol.34, n.2, pp.163-168. ISSN 0717-7178.

Gorgona Natural National Park covers 1600 ha of insular territory and 60087 ha of protected marine area in the Eastern Pacific Ocean (02°49'00"N-03°06'00"N and 78°06'00"W-78°18'00"W), and is located 27 km off the continent (Nariño, Colombia). A prohibition on fishing activities in Gorgona Park has resulted in sustained confiicts with small-scale and industrial fishermen. Therefore, Gorgona Park began a project to evaluate the bottom fish resources and other communities in the park's area of infiuence. This study was designed to evaluate the state of the resources and to determine conservation strategies for them. Lutjanus peru, a seasonal resource recorded in Gorgona Park, is a key species for small-scale fisheries in the southern zone of the Colombian Pacific Ocean. Scientific fishing (small-scale methods) established that L. peru growth in Gorgona Park was isometric, being described by the function Pt = 0.0102·Lt3.0349. Furthermore, the historical catch record of scientific fisheries in Gorgona Park revealed that the L. peru catch size (minimum and average) in the study area has decreased since 1990. The results of this work suggest that it is both necessary to maintain the protected status of L. peru in the marine area of Gorgona Park and to advance the management of the resource in the area of infiuence

Keywords : Lutjanus peru; growth; tropical Eastern Pacific; National Park; Colombia.

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