Biological characterization of pilotfish (naucrates ductor) from the fads fishery of the island of mallorca (western mediterranean)

摘要

The pilotfish (Naucrates ductor Linnaeus, 1758) (Pisces: Carangidae) is an epidelagic oceanic species almost cosmopolitan in tropical and subtropical seas (Smith-Vaniz, 1986). However, despite its world-wide distribution, very little biological information is avail- Able. Only Maksimov (1968) studied the trophic and reproductive biology of N. Ductor in The Galapagos Islands and more recently, Relini et al. (1994) reported some data on its Length-frequency distribution and feeding behavior from specimens associated with an Offshore buoy in the Ligurian Sea.