Feeding ecology of Rhinodoras dorbignyi (Kner, 1855) (Siluriformes: Doradidae) in the Paranapanema River, SP, Brazil

Feeding ecology of Rhinodoras dorbignyi (Kner, 1855) (Siluriformes: Doradidae) in the Paranapanema River, SP, Brazil

Studies describing the diet of fish are important to determine trophic chain relationships, habitat occupation, trophic niches, and to define food habits of species. To describe the diet of Rhinodoras dorbignyi, six collections were made bimonthly in the upper Paranapanema River, SP, from April 2010...

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Bibliographic Details
Published in:Biotemas Vol. 29; no. 1; pp. 67 - 73
Main Authors: Felipe Pontieri de Lima, André Batista Nobile, Diogo Freitas Souza, Edmir Daniel Carvalho, Ana Paula Vidotto-Magnoni
Format: Journal Article
Language:English
Published: Universidade Federal de Santa Catarina 01-02-2016
Subjects:
Alimentary index
Diet
Fish
Food resources
Seasonal variation
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Summary:Studies describing the diet of fish are important to determine trophic chain relationships, habitat occupation, trophic niches, and to define food habits of species. To describe the diet of Rhinodoras dorbignyi, six collections were made bimonthly in the upper Paranapanema River, SP, from April 2010 to February 2011. Of the 63 samples collected, 30 had stomach content. The diet of this species was determined using two methods: (i) alimentary index (AI%) and (ii) graphical analysis of feeding strategy. Based on the results, R. dorbignyi is an insectivorous species and autochthonous items play an important role in the diet of this species.
ISSN:0103-1643
2175-7925
DOI:10.5007/2175-7925.2016v29n1p67