Trophic ecology of the dusky catshark Bythaelurus canescens (Günther, 1878) (Chondrychthyes: Scyliorhinidae) in the southeast Pacific Ocean

S. Lopez, G. Zapata-Hernández, C. Bustamante, J. Sellanes, R. Meléndez

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

7 Citas (Scopus)

Resumen

Summary: Feeding and stable isotope analyses for Bythaelurus canescens individuals were conducted to describe the diet of B. canescens as well as infer their potential prey species in the community. Stomach content analysis and mixing models by ratio isotopes composition were used to infer the food habits and calculate the trophic level of the dusky catshark, B. canescens. The results showed siphonophores and cephalopods as the most important food in the diet (67.9 and 20.2%, respectively). Calculated trophic level was 3.9, indicating that B. canescens is a meso-predator in the upper continental slope communities off Chile. By mixing models based on isotope data it can be inferred that the probabilities of the consumption cephalopods and siphonophores would be 36.7 and 15.2%, respectively.

Idioma originalInglés
Páginas (desde-hasta)751-756
Número de páginas6
PublicaciónJournal of Applied Ichthyology
Volumen29
N.º4
DOI
EstadoPublicada - 1 ago 2013

Áreas temáticas de ASJC Scopus

  • Ciencias acuáticas

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