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3 resultados encontrados para: AUTOR: Rosas Luis, Rigoberto
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Food and feeding habits of Octopus insularis in the Veracruz Reef System National Park and confirmation of its presence in the southwest Gulf of Mexico
Rosas Luis, Rigoberto (autor) ; Jiménez Badillo, María de Lourdes (autora) ; Montoliu Elena, Lucía (autora) ; Morillo Velarde, Piedad S. (autora) ;
Contenido en: Marine Ecology Vol. 40, no. 1, e12535 (February 2019), p. 1-6 ISSN: 0173-9565
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Resumen en: Inglés |
Resumen en inglés

Octopuses are active predators that feed on a wide range of prey including crustaceans, fishes, and mollusks. They are important components of coral reef systems and support local and artisanal fisheries in the Gulf of México. Octopus insularis has been found to be one of the most relevant components in catches from the coral reef system of Veracruz in the southwestern Gulf of Mexico, and its role in the ecosystem requires assessment. To corroborate the morphological identification of O. insularis, six octopuses were identified by genetic methods. And to understand the trophic relationships between this octopus species and its prey, 394 octopuses caught during 2016 and 2017 by an artisanal fleet were sampled and their stomach contents analyzed. Results showed that crustaceans are the most frequently consumed group, with the genera Mithraculus and Etisus being the most important in the diet. Fishes, bivalves, and gastropods were identified as uncommon prey items in the diet. Their presence in the stomachs could be related to the movement of this octopus outside of the coral reef. Considering that our samples were of medium‐ and large‐sized individuals, cannibalism could be discarded for O. insularis in this size range in the Veracruz reef system. These findings suggest a generalist and opportunistic predation of O. insularis on the most abundant and available prey in the study area, namely the crustaceans. These represents an effective transfer of biomass from the low trophic levels to top predators in the coral reef system.

Food and feeding of jumbo squid Dosidicus gigas in the central Gulf of California during 2005-2007
Markaida Aburto, Unai ; Gilly, William F. (coaut.) ; Salinas Zavala, César Augusto (coaut.) ; Rosas Luis, Rigoberto (coaut.) ; Booth, J. T. Ashley (coaut.) ;
Contenido en: California Cooperative Oceanic Fisheries Investigations Reports Vol. 49 (2008), 90-103 ISSN: 0575-3317

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Studies of the jumbo squid (Dosidicus gigas d´Orbigny, 1835) in Mexico: fishery, ecology and climate
Salinas Zavala, César Augusto (autor) ; Camarillo Coop, Susana (autora) ; Mejia Rebollo, Arminda (autora) ; Rosas Luis, Rigoberto (autor) ; Ramos Castillejos, Jorge (autor) ; Ramírez Rojo, R. (coaut.) ; Arizmendi Cárdenas, Diana (autora) ; Bazzino, Gastón (autor) ; Dimaté Velázquez, N. (coaut.) ; Markaida Aburto, Unai (autor) ;
Disponible en línea
Contenido en: The role of squid in open ocean ecosystems / Robert J. Olson, Jock W. Young (editores) Honolulu, Hawaii, United States : Report of a GLOBEC-CLIOTOP/PFRP Workshop, 2006 p. 35-41
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