2010
DOI: 10.1590/s1679-62252010000300002
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Abstract: Ecomorphological patterns of the fish assemblage from the upper Paraná River floodplain, Brazil, were described and evaluated according to trophic (guilds), spatial (habitats) and phylogenetic (taxonomic distances) structures. The samples were obtained through the Long Term Research Project (LTER-CNPq/UEM/NUPELIA) in August and October 2001. Thirty-five species were analyzed from thirty-one morphological variables. Strong significant correlations (Mantel test) between morphology and trophic guilds and between … Show more

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Cited by 89 publications
(144 citation statements)
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“…The areas and linear measures of the body were taken: standard length, body's height and width, midline body height, caudal peduncle's length, height and width, head's length, height and width, eye's height, areas of the eye and fins (dorsal, caudal, anal, pelvic and pectoral). Detailed information about the morphological measurements is described in Gatz (1979) and Oliveira et al (2010). Only adults were measured to avoid morphologic variations related to ontogeny.…”
Section: Methodsmentioning
confidence: 99%
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“…The areas and linear measures of the body were taken: standard length, body's height and width, midline body height, caudal peduncle's length, height and width, head's length, height and width, eye's height, areas of the eye and fins (dorsal, caudal, anal, pelvic and pectoral). Detailed information about the morphological measurements is described in Gatz (1979) and Oliveira et al (2010). Only adults were measured to avoid morphologic variations related to ontogeny.…”
Section: Methodsmentioning
confidence: 99%
“…Thus, the index use nullifies the chance of analyzes being dominated by a single variable (Winemiller, 1991). Despite the controversy about this procedure in ecomorphological studies (Peres-Neto, 1999), some authors have used index in their analysis (Gatz, 1979;Watson & Balon, 1984;Winemiller, 1991;Willis et al, 2005;Casatti & Castro, 2006;Oliveira et al, 2010). These authors assume that, by expressing the shape of morphological structures, the indices are able to reveal their ecological roles.…”
Section: Methodsmentioning
confidence: 99%
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“…A principal component is interpretable if it exceeds the eigenvalue randomly generated by the broken-stick model (Legendre & Legendre, 1998). For the selection of significant components, the broken-stick model is one of the methods with the most consistent results in ecological studies (Jackson, 1993) and is widely used in studies of ecomorphological structure (see: Casatti & Castro, 2006;Oliveira et al, 2010). Multivariate analyses were conducted using Primer v6 (Clarke & Gorley, 2006) and Statistica 7 (StatSoft Inc., 2004) software.…”
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confidence: 99%