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Dieta del pez chile lucio Synodus scituliceps (Aulopiformes: Synodontidae) en la Costa Este del Golfo de California, México

Jesús Rodríguez-Romero1, Juana López-Martínez2*, Ma. Ruth Ochoa Díaz1 y Eloísa Herrera-Valdivia2

1Laboratorio Ecología de Peces, Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Apdo. Postal 128, C.P. 23000, La Paz, Baja California Sur, México
2Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Unidad de Guaymas, Km. 2.35 Camino al Tular Estero de Bacochibampo Guaymas, A.P. 349, Sin Nombre, Heroica Guaymas, Sonora

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Resumen

This study provides information on feeding habits of the lizardfish Synodus scituliceps, one of the most abundant and frequent species in shrimp by-catch in the demersal area in the eastern coast of the Gulf of California, Mexico. Stomach content analyses were performed on 114 organisms caught from August 2004 to March 2005, and Levin’s index was applied. The most important prey species were benthic fishes: Eucinostomus curraniOpisthonema libertateSynodus lucioceps and Paralichthys californicus. According to the Levin’s index (Bi = 0.39), S. scituliceps is a piscivorous specialist predator in soft bottoms, with similar diet in juveniles and adults.

Palabras clave

Stomach content analyses, ichthyophagy, shrimp by-catch, trophic width