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Feeding ecology of stream-dwelling fishes from a coastal stream in the Southeast of Brazil BABT
Mazzoni,Rosana; Costa,Leandro Damião Soares da.
The relationship between ontogenetic variation of intestine length and feeding habits of five stream-dwelling fish species from the Ubatiba River were investigated. Analysed data were based on two size categories (juveniles and adults) and two food categories (animal and vegetal). Diet composition of each size category revealed that Astyanax janeiroensis and Geophagus brasiliensis changed food preference throughout ontogeny and switched from omnivorous/carnivorous to omnivorous/herbivorous and from omnivorous/carnivorous to omnivorous, respectively. These changes were followed by ontogenetic changes in the Intestinal Coefficient (IC). No ontogenetic differences were registered for IC and food categories consumed by Hoplias malabaricus but significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Coastal stream; Feeding habit; Intestinal coefficient.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000400008
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