Preliminary analysis of the feeding habits of batoids from the genera Mobula and Myliobatis in Northern Peru

Javier Jesús Coasaca-Céspedes, Eduardo Segura-Cobeña, Rebeca Montero-Taboada, Adriana Gonzalez-Pestana, Eliana Alfaro-Córdova, Joanna Alfaro-Shigueto, Jeffrey C. Mangel

Resumen


Abstract.- This study provides baseline information on the feeding habits of five batoid species from the genera Mobula and Myliobatis sampled from the small-scale driftnet fishery in northern Peru. The diets of Mobula mobular, Mobula munkiana and Mobula thurstoni consisted mainly of euphausiids. Dietary niche breadth indicated a pelagic feeding behaviour of a specialist and a trophic level of a secondary predator for both M. mobular and M. munkiana. In contrast, Myliobatis chilensis and Myliobatis peruvianus consumed mostly gastropods and crustaceans. Dietary niche breadth indicated a feeding behaviour of a benthic specialist and a trophic level of a secondary predator for Myliobatis chilensis.


Palabras clave


Feeding habit; Trophic level; Niche breadth; Devil rays; Eagle rays

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DOI: https://doi.org/10.22370/rbmo.2018.53.3.1368

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Este obra está bajo una licencia de Creative Commons Reconocimiento 4.0 Internacional.