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Feeding habits of wahoo (Acanthocybium solandri) in the eastern Pacific Ocean

Published online by Cambridge University Press:  13 July 2016

Molker Mendoza-ávila
Affiliation:
Facultad de Ciencias del Mar, Universidad Laica Eloy Alfaro de Manabí, Vía San Mateo S/N. Manta, Manabí, Ecuador Viceministerio de Acuacultura y Pesca, Av. 4 Calle 12-13. Manta, Ecuador
Gabriela Zavala-Zambrano
Affiliation:
Facultad de Ciencias del Mar, Universidad Laica Eloy Alfaro de Manabí, Vía San Mateo S/N. Manta, Manabí, Ecuador Viceministerio de Acuacultura y Pesca, Av. 4 Calle 12-13. Manta, Ecuador
Felipe Galván-Magaña*
Affiliation:
Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. IPN S/N, Apdo. Postal 592, La Paz, Baja California Sur, México
Peggy Loor-Andrade
Affiliation:
Facultad de Ciencias del Mar, Universidad Laica Eloy Alfaro de Manabí, Vía San Mateo S/N. Manta, Manabí, Ecuador
*
Correspondence should be addressed to: F. Galván-Magaña, Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. IPN S/N, Apdo. Postal 592, La Paz, Baja California Sur, México email: [email protected]

Abstract

Stomach content analysis was used to assess the feeding habits of Acanthocybium solandri based on samples obtained on purse seine fishing trips off the Pacific coasts of Central and South America. A total of 226 samples were obtained; 160 stomachs contained food and 33 prey taxa were identified. Based on the Prey Specific Index of Relative Importance (%PSIRI), cephalopods and fishes were the main prey groups (50.4 and 49.5% PSIRI). Dosidicus gigas (23.4% PSIRI), Stenoteuthis oualaniensis (9.9% PSIRI) and Argonauta spp. (9.4% PSIRI) were the most representative prey. Acanthocybium solandri is a generalist predator based on the results of the Amundsen analysis and niche breadth (Ba = 1).

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2016 

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