Seasonal diet shifts of seven fish species in an Atlantic rainforest stream in Southeastern Brazil

Autor:	Deus C. P., Petrere-Junior M.
Jazyk:	angličtina
Rok vydání:	2003
Předmět:	Atlantic rainforest diet overlap feeding variability specialist generalist Science Biology (General) QH301-705.5 Zoology QL1-991 Botany QK1-989
Zdroj:	Brazilian Journal of Biology, Vol 63, Iss 4, Pp 579-588 (2003)
Druh dokumentu:	article
ISSN:	1519-6984 1678-4375
Popis:	We analyzed the stomach contents of 116 individuals belonging to seven fishes species in order to investigate seasonal changes in feeding strategy and how trophic interactions between species affect community structure in an Atlantic rainforest stream in Southeastern Brazil. Oligosarcus hepsetus and Pimelodus sp. consumed fewer items during the winter. Phalloceros caudimaculatus switched feeding habits from detritus during summer to algae during winter. These examples are related to variations in food availability and species feeding selectivity. The highest diet overlap values, for most species, as measured using Schoener's index, were observed in summer, along with a species tendency to be more generalist. Feeding pattern variation may influence the fish community structure.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/259c972c2f9d47119065d8fa26b0a108 Zobrazit plný text záznamu View record in DOAJ