2022
DOI: 10.1590/1678-4766e2022001
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Feeding strategy of the introduced Astronotus crassipinnis (Cichlidae) in upper Paraná river floodplain

Abstract: The cichlid Astronotus crassipinnis (Heckel, 1840) known as “oscar” or “apaiari” is native to the Amazon basin and presents an omnivorous feeding habit, with a tendency to carnivory. The species was introduced in the upper Paraná River floodplain, where the trophic strategies adopted by the species are not well-known. The objective of this study was to characterize the diet of A. crassipinnis in different size classes to identify ontogenetic differences in diet composition and to determine its feeding behavior… Show more

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Cited by 3 publications
(3 citation statements)
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“…The guilds were attributed according to the most expressive behaviour reported by the specialized bibliographies (Sazima & Machado, 1983;Lolis & Andrian, 1996;Resende et al, 1996;Resende, 2000;Hahn et al, 2002;Lonardoni et al, 2006;Ibañez et al, 2007;Corrêa et al, 2009;Brandão-Gonçalves et al, 2010;Sampaio & Goulart, 2011;Prado, 2015;Resende et al, 2016;Polaz et al, 2017;Lopes et al, 2022). The invertivores' guild was composed by invertivorous, insectivorous, invertivorous/insectivorous and zooplanktophagous species.…”
Section: Data Collectionmentioning
confidence: 99%
“…The guilds were attributed according to the most expressive behaviour reported by the specialized bibliographies (Sazima & Machado, 1983;Lolis & Andrian, 1996;Resende et al, 1996;Resende, 2000;Hahn et al, 2002;Lonardoni et al, 2006;Ibañez et al, 2007;Corrêa et al, 2009;Brandão-Gonçalves et al, 2010;Sampaio & Goulart, 2011;Prado, 2015;Resende et al, 2016;Polaz et al, 2017;Lopes et al, 2022). The invertivores' guild was composed by invertivorous, insectivorous, invertivorous/insectivorous and zooplanktophagous species.…”
Section: Data Collectionmentioning
confidence: 99%
“…Singapore (Ng et al 1993), Canada (Coker et al 2001), China (Ma et al 2003), Hawaii (Mundy 2005), Poland (Solarz 2005), Australia (Hammer et al 2012;ACTFR 2014), USA (Robins et al 1991;Fuller et al 1999;Nico et al 2019;Rodríguez-Barrera et al 2020), and Italy (Lorenzoni et al 2019) and (2) Astronotus crassipinnis (Heckel, 1840). Type locality Rio Paraguay, distributed naturally in southern parts of the Amazon (upper Madeira River) and the upper Paraguay basins (Kullander 1986;Lasso et al 2001;Kullander 2003;Fricke et al 2019;Dos Reis et al 2020) and introduced in Bahia and São Paulo States, and the upper Paraná River in Brazil (Kullander 1981;García et al 2018;Lopes et al 2022). Kullander (1986) reviewed the taxonomy of Astronotus species based on morphometric and meristic data from 68 specimens from the Paraguay River basin (Paraná River basin in Paraguay), 18 specimens from several tributaries of the Amazon River basin (Brazil), six specimens from the Orinoco River Basin (Venezuela and Colombia), and 50 from the Peruvian Amazon (Ucayalí and Amazon basins); with this work he redescribed A. ocellatus and revalidated A. crassipinnis.…”
Section: Introductionmentioning
confidence: 99%
“…Singapore ( Ng et al 1993 ), Canada ( Coker et al 2001 ), China ( Ma et al 2003 ), Hawaii ( Mundy 2005 ), Poland ( Solarz 2005 ), Australia ( Hammer et al 2012 ; ACTFR 2014 ), USA ( Robins et al 1991 ; Fuller et al 1999 ; Nico et al 2019 ; Rodríguez-Barrera et al 2020 ), and Italy ( Lorenzoni et al 2019 ) and (2) Astronotus crassipinnis (Heckel, 1840). Type locality Rio Paraguay, distributed naturally in southern parts of the Amazon (upper Madeira River) and the upper Paraguay basins ( Kullander 1986 ; Lasso et al 2001 ; Kullander 2003 ; Fricke et al 2019 ; Dos Reis et al 2020 ) and introduced in Bahia and São Paulo States, and the upper Paraná River in Brazil ( Kullander 1981 ; García et al 2018 ; Lopes et al 2022 ).…”
Section: Introductionmentioning
confidence: 99%