Espectro trófico de la tilapia Oreochromis aureus (Perciformes: Cichlidae) en la presa Infiernillo, Michoacán-Guerrero, México

Jiménez Badillo, María de Lourdes; Nepita Villanueva, Marta Rocío

dc.creator	Jiménez Badillo, María de Lourdes
dc.creator	Nepita Villanueva, Marta Rocío
dc.date	2015-04-22
dc.date.accessioned	2016-05-03T15:28:00Z
dc.date.available	2016-05-03T15:28:00Z
dc.identifier	http://revistas.ucr.ac.cr/index.php/rbt/article/view/18817
dc.identifier.uri	https://hdl.handle.net/10669/26314
dc.description	The tropbic spectrum of tilapia Oreochromis aureus (Steindachner 1864), was deterrnined by stomach content analysis in 153 organisros collected during 1993 in Michoacán-Guerrero, México. The feeding status of the fish at the time of observation was evaluated by the examination of fat surrounding the gut, gastric replection and the condition coefficient. The quantitative evaluation of the food items was carried out by the combination of the following analysis: Frequency of Occurrence, Volurnetric Method, Volumetric Mean Index and Relative Importilnce Index. Diet consisted of: detritus and vascular plat residues as a primary food; unicellular algae as' secondary food; and remains of insects and fish, graminean seeds, fiJamentous algae, cJadocerans, ostracods, rotifers and copepods as occasional food. Wedetected a difference in food preferences between juveniles and adults and a variation in the consurnption proportíons of some food iteros duringtbe rainy and dry seasons. Thus, we concluded that O. aureus is an omnivorous species with prefeJ;'eAce for detritus<¡md vascular plant remain. Feeding seems to be, deterrnin	en
dc.description	Se determinó el espectro trófico de la tilapia Oreochromis aureus (Steindachner 1864), a través del análisis del contenido estomacal de una muestra de 153 especí¡nenes recolectados durante 1993. El estado de alimentación se evaluó por la proporción de grasa alrededor del estomago	es-ES
dc.format	application/pdf
dc.language	spa
dc.publisher	Universidad de Costa Rica	en
dc.rights	Copyright (c) 2015 International Journal of Tropical Biology and Conservation	en
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 48 (2-3) June 2000; 487-494	es-ES
dc.source	2215-2075
dc.source	0034-7744
dc.subject	oreochromis aureus	en
dc.subject	tilapia	en
dc.subject	food analysis	en
dc.subject	infiernillo dam	en
dc.subject	México	en
dc.title	Espectro trófico de la tilapia Oreochromis aureus (Perciformes: Cichlidae) en la presa Infiernillo, Michoacán-Guerrero, México	es-ES
dc.type	artículo original

Ficheros en el ítem

Ficheros	Tamaño	Formato	Ver
No hay ficheros asociados a este ítem.

Este ítem aparece en la(s) siguiente(s) colección(ones)

Revista de Biología Tropical [2107]

Mostrar el registro sencillo del ítem