Hábitos alimenticios de la tmcha arcoiris, Oncorhynchus mykiss (Salmoniformes: Salmonidae), en una quebrada altiandina venezolana
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Авторы: | , , |
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Формат: | artículo original |
Статус: | Versión publicada |
Дата публикации: | 1994 |
Описание: | Monthly stomach context samples of rainbow trout from Mucunután stream (Mérida, Venezuela), were collected from, March 1987 to Febrary 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 oí' occurrence (88%). When the gravimetric method was used Leptonema sp. was the major dietary componen!. The diet was not a function of sexo The consumed fauna was more similar to the drifr invertebrate fauna than to that of benthos (p < 0.01). The fluctuations on the stomach content paralleled changes of food availability in the environment. |
Страна: | Portal de Revistas UCR |
Институт: | Universidad de Costa Rica |
Repositorio: | Portal de Revistas UCR |
Язык: | Español |
OAI Identifier: | oai:portal.ucr.ac.cr:article/23273 |
Online-ссылка: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/23273 |