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Morphological patterns of five fish species (four characiforms, one perciform) in relation to feeding habits in a tropical reservoir in south-eastern Brazil
2011; Wiley; Volume: 27; Issue: 6 Linguagem: Inglês
10.1111/j.1439-0426.2011.01801.x
ISSN1439-0426
AutoresAlex Braz Iacone Santos, Fabián Camilo, R. J. Albieri, Francisco Gerson Araújo,
Tópico(s)Fish Ecology and Management Studies
ResumoJournal of Applied IchthyologyVolume 27, Issue 6 p. 1360-1364 Morphological patterns of five fish species (four characiforms, one perciform) in relation to feeding habits in a tropical reservoir in south-eastern Brazil A. B. I. Santos, A. B. I. Santos Laboratório de Ecologia de Peixes, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, BrazilSearch for more papers by this authorF. L. Camilo, F. L. Camilo Laboratório de Ecologia de Peixes, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, BrazilSearch for more papers by this authorR. J. Albieri, R. J. Albieri Laboratório de Ecologia de Peixes, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, BrazilSearch for more papers by this authorF. G. Araújo, F. G. Araújo Laboratório de Ecologia de Peixes, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, BrazilSearch for more papers by this author A. B. I. Santos, A. B. I. Santos Laboratório de Ecologia de Peixes, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, BrazilSearch for more papers by this authorF. L. Camilo, F. L. Camilo Laboratório de Ecologia de Peixes, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, BrazilSearch for more papers by this authorR. J. Albieri, R. J. Albieri Laboratório de Ecologia de Peixes, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, BrazilSearch for more papers by this authorF. G. Araújo, F. G. Araújo Laboratório de Ecologia de Peixes, Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro, BrazilSearch for more papers by this author First published: 06 July 2011 https://doi.org/10.1111/j.1439-0426.2011.01801.xCitations: 15 Author’s address: Francisco G. Araújo, Laboratório de Ecologia de Peixes, Universidade Federal Rural doRio de Janeiro, Km 47, Antiga Rodovia Rio, São Paulo, 23851-970,Seropédica, RJ, BrazilE-mail: [email protected] Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Summary Described are the ecomorphological attributes of five abundant fish species and their relationships to the feeding ecology in a tropical reservoir in south-eastern Brazil. A total of 140 individuals were used. All specimens were collected between October 2006 and September 2007. Nine ecomorphological indexes were used and patterns detected by principal components analysis. The carnivorous species (Oligosarcus hepsetus) showed higher relative height of mouth to the mouth width aspect. On the other hand, the herbivorous species (Metynnis maculatus) had a higher compression index to the relative height. Geophagus brasiliensis (perciform) exhibited a larger relative length of the head to the relative length of the caudal peduncle. The two Astyanax species (A. bimaculatus and A. parahybae), although with taxonomic and morphological proximities to each other, exhibited indications of morphological adjustments probably associated to adaptive divergence. Three well-defined trophic groups were confirmed by the cluster analysis. The ecomorphology was effective in predicting feeding habits and aspects of locomotion, and the eventual consequences of the impoundment may be triggering a morphological divergence between closely related species. 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