SciELO - Scientific Electronic Library Online

 
vol.40 número109Cambios en la estructura de la comunidad perifítica en el sistema de lagos de Yahuarcaca, Amazonía colombiana índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Actualidades Biológicas

versión impresa ISSN 0304-3584

Resumen

HERNANDEZ-MORALES, Andrés F. et al. Feeding habits of the gafftopsail sea catfish Bagre marinus (Mitchill, 1815) (Siluriformes: Ariidae) in Urabá Gulf, Colombian Caribbean. Actu Biol [online]. 2018, vol.40, n.109, e2. ISSN 0304-3584.  https://doi.org/10.17533/udea.acbi.v40n109a02.

Understanding the biology of fishing resources is a basic tool in order to define their adequate administration, and for that, trophic ecology studies gather important information about the spatio-temporal distribution of fish populations and their preys. Using passive fishing tackles such as longline and gillnets, 373 specimens of the gafftopsail sea catfish Bagre marinus were caught from which, 252 stomachs were analyzed. 41 food items were identified and classified in different groups, of which, fish remains, the fish Anchoa sp, peneid crustaceans, the fish Cathorops mapale, fish eggs and vegetal material were the most frequent ones. The diet analysis indicates that it is an omnivore species. The feeding habits of this ariid, respond to an estuarine gradient in direction south-north, with significant differences between seasons and no significant overlapping between sites. To the north, the peneid crustacean preys are dominant in the diets, apparently due to high salinities of this zone that favor their abundance, while the south zone, characterized by large extensions of mangroves, is apparently an adequate area for a wider spectrum of marine and estuarine preys, particularly fish.

Palabras clave : Trophic ecology; Bagre marinus; feeding habits; food ítems; diet.

        · resumen en Español     · texto en Español     · Español ( pdf )