title: [Food habits of the rainbow trout Oncorhynchus mykiss (Salmoniformes: Salmonidae) in an Andean creek of Venezuela].
abstract: Monthly stomach context samples of rainbow trout from Mucunután stream (Mérida, Venezuela), were collected from, March 1987 to February 1988 (n = 306). The major dietary components were Ephemeroptera, Trichoptera and Diptera. Baetodes sp. was the most important food item based on numerical composition (43%) and frequency of occurrence (88%). When the gravimetric method was used Leptonema sp. was the major dietary component. The diet was not a function of sex. The consumed fauna was more similar to the drift invertebrate fauna than to that of benthos (p < 0.01). The fluctuations on the stomach content paralleled changes of food availability in the environment.
authors.affiliation: Campo Experimental Truchícola La Mucuy, FONAIAP-Mérida, Venezuela.
authors.forename: H
authors.initials: H
authors.lastname: Bastardo
authors.forename: O
authors.initials: O
authors.lastname: Infante
authors.forename: S
authors.initials: S
authors.lastname: Segnini
mesh_terms: D000818:Animals; D004032:Diet; D005247:Feeding Behavior; D005260:Female; D005618:Fresh Water; D008297:Male; D017686:Oncorhynchus mykiss / Q000502:physiology*; D012737:Sex Factors; D013997:Time Factors; D014687:Venezuela