Abstract

The yellowtail snapper (Ocyurus chrysurus) is a marine species living on hard substrates mostly in coral reefs; it is an important economic resource and an important ecological role in the predator-prey relationship. Because of this the interest arise to study the feeding habits of individuals captured by the artisanal fishery of Antón Lizardo in the National Park Veracruz Reef System by analyzing the diet by sex development (juvenile and adult), by sex (male and female) and in general. The stomach content of 190 organisms were analyzed captured between March and September 2017. The frequen-cy of occurrence (FA), relative abundance %N), the Levins standardized diet amplitude (Be), and the Shannon-Weiner diversity index (H’) were calculated. In general, the diet was composed by 25 items of five Phylla: Arthropoda, Annelida, Mollusca, Echinodermata and Chordata. For the Arthropoda five families and one genus were identified, for Annelida one Class, for the Mollusca were identified two families with one genus each, for the Echinodermata one class was identified, and for the Chordata two families were identified. The main prey was fish remains (29.37%) and crustacean (20.24%), and the genus Lucifer as a secondary prey with 10.71%. O. chrysurus was a specialist species as shown by the Levins index value of 0.2 and the Shannon-Weiner diversity value of 0.95. The yellowtail snapper can be considered as zooplankton and zoobenthos carnivore.

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