Dieta da pirambeba Serrasalmus brandtii Reinhardt (Teleostei, Characidae) em quatro lagoas marginais do rio São Francisco, Brasil

Pompeu, None Paulo dos Santos

doi:10.1590/s0101-81751999000600003

Cited by 23 publications

(20 citation statements)

References 9 publications

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“…Magalhães et al (1990) described an essentially carnivorous diet showing no seasonality, for S. brandtii, it consisted of aquatic and terrestrial insects, crustaceans (decapods) and, preferably, fish. Pompeu (1999), in studying the food habits of S. brandtii in marginal lakes of the São Francisco River, found seasonal and ontogenetic differences in the diet of this species, and related their piscivorous behavior to food available in the environment, attributing an opportunistic feeding habit to the pirambeba.…”

Section: Discussionmentioning

confidence: 99%

Diet shifts related to body size of the pirambeba Serrasalmus brandtii Lütken, 1875 (Osteichthyes, Serrasalminae) in the Cajuru Reservoir, São Francisco River Basin, Brazil

et al. 2004

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This study aimed to identify shifts in the Serrasalmus brandtii Lütken, 1875 diet related to body size. Specimens were collected from April 1992 to January 1993 at the Cajuru Reservoir, in the Pará River, São Francisco River Basin, by seining the shore with nets of nylon, 1 mm opening, and with gill nets. Stomach contents of 152 individuals measuring 15-192 mm SL were examined. Food items were identified and weighed separately. For qualitative analysis, the frequency of occurrence method was used. The relative importance of each food component was determined based on the alimentary index (IA i ). The frequencies of occurrence data were subjected to cluster analysis using the Canberra coefficient of dissimilarity and UPGMA as the cluster method. Distinctive gradual changes in food habits, associated with body size, were identified in this species. The smaller individuals fed predominantly on microcrustaceans and insect larvae. The intermediate size classes ingested insects, fish fins, fish scales, and chunks of fish flesh, in this order of importance. For the larger pirambebas, fish was the most abundant food category identified, followed by insects.Key words: Serrasalmus brandtii, body size, trophic ecology, reservoir, similarity. RESUMOModificações na dieta da pirambeba Serrasalmus brandtii Lütken, 1875 (Osteichthyes, Serrasalminae), em relação ao tamanho corpóreo no reservatório Cajuru, bacia do rio São Francisco, Brasil

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Section: Discussionmentioning

confidence: 99%

Diet shifts related to body size of the pirambeba Serrasalmus brandtii Lütken, 1875 (Osteichthyes, Serrasalminae) in the Cajuru Reservoir, São Francisco River Basin, Brazil

et al. 2004

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“…GODINHO; POMPEU, 1999;GODINHO, 1999), with few studies on feeding dynamics (GOMES; VERANI, 2003;POMPEU;. Data for the Sobradinho reservoir are even more scarce -and most of all, recent (e.g.…”

Section: Introductionmentioning

confidence: 99%

Diet composition and food overlap of Acestrorhynchus britskii and A. lacustris (Characiformes: Acestrorhynchidae) from Sobradinho reservoir, São Francisco river, Bahia State

Rocha

Santos

Pinto

et al. 2011

Acta Sci. Biol. Sci.

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ABSTRACT. Fish diet studies contribute to understanding resource partitioning and community trophic structure. The present paper characterizes the diet of "peixe-cachorro" species Acestrorhynchus britskii and A. lacustris in Sobradinho reservoir, Bahia State, Brazil. Bimonthly samples (November 2006 to July 2008 were taken in the lotic, transition and lentic stretches of the reservoir, using gillnets overnight. A total of 899 A. britskii and 476 A. lacustris stomachs were analyzed, 70% of which were empty. Their content indicated the species are predominantly piscivorous, with 18 prey fish species identified. However, each prey occurred in a single month, except for Anchoviella vaillanti, recorded in 80% of months for A. bristski, and Tetragonopterus chalceus in 25% for A. lacustris. The species presented high food overlap (Cλ = 0.992), owing to the occurrence of Actinopterygii (bits) and Actinopterygii in all months. Regarding prey fish alone, a differentiated intake and lower food overlap was detected, in the flood (Cλ = 0.427) and drought (Cλ = 0.172) seasons, in the lotic (Cλ = 0.434), transition (Cλ = 0.089) and lentic (Cλ = 0) stretches, and in overall overlap (Cλ = 0.236). The spatial and seasonal differences in the intake of different prey fish by both species suggest an opportunistic feeding habit and a competition reduction mechanism for food resources.Keywords: natural feeding, peixe-cachorro, piscivory. RESUMO. Composição da dieta e sobreposição alimentar deAcestrorhynchus britskii e A. lacustris (Characiformes: Acestrorhynchidae) do reservatório de Sobradinho, rio São Francisco, Estado da Bahia. Estudos sobre a dieta de peixes contribuem para o entendimento da partilha de recursos e da estrutura trófica da comunidade. O presente trabalho caracteriza a dieta dos peixes-cachorro Acestrorhynchus britskii e A. lacustris no reservatório de Sobradinho, Estado da Bahia. Coletas bimestrais noturnas (Novembro/2006 a Julho/2008) foram efetuadas nos trechos lótico, transição e lêntico do reservatório, empregando redes de espera. Foram analisados 899 estômagos de A. britskii e 476 de A. lacustris, aproximadamente 70% dos quais se encontravam vazios. Seu conteúdo evidenciou tratar-se de espécies predominantemente piscívoras, com 18 peixes-presa identificados. Entretanto, cada presa ocorreu num único mês, exceto Anchoviella vaillanti, registrada em 80% dos meses para A. bristski e Tetragonopterus chalceus em 25% deles para A. lacustris. As espécies apresentaram elevada sobreposição alimentar (Cλ = 0,992), pela ocorrência de Actinopterygii (partes) e Actinopterygii não-identificado em todos os meses. Entretanto, considerando apenas os peixespresa, foi observado consumo diferenciado e menor sobreposição alimentar, nos períodos de cheia (Cλ = 0,427) e seca (Cλ = 0,172), nos trechos lótico (Cλ = 0,434), de transição (Cλ = 0,089) e lêntico (Cλ = 0), e na sobreposição geral (Cλ = 0,236). A diferença espacial e sazonal no consumo de peixes-presa distintos pelas duas espécies sugere hábito alimentar oportunista e mecanis...

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“…Hábitos mutilantes e oportunistas têm sido reportados às piranhas devido ao ataque a diversas espécies de peixes em cativeiro ou no ambiente natural (SAZIMA & ZAMPROGNO, 1985;NORTHCOTE et al, 1987;SAZIMA & POMBAL JR., 1988;SAZIMA & MACHADO, 1990;BISTONI & HARO, 1995;POMPEU, 1999;OLIVEIRA et al, 2004) e em redes de pesca (AGOSTINHO & MARQUES, 2001).…”

unclassified

“…Uma dieta onívora com tendência à piscivoria tem sido diagnosticada para várias espécies de piranhas (LEÃO et al, 1991;ALMEIDA et al, 1998;POMPEU, 1999;AGOSTINHO et al, 2003). Os juvenis preferem nadadeiras de peixes, microcrustáceos, insetos e, em algumas espécies, sementes (SAZIMA & ZAMPROGNO, 1985;MACHADO-ALLISON & GARCIA, 1986; NICO & TAPHORN, BEHR & SIGNOR 1988;WINEMILLER, 1989;NICO, 1990;POMPEU, 1999;ALVIM et al, 1999).…”

unclassified

“…Os juvenis preferem nadadeiras de peixes, microcrustáceos, insetos e, em algumas espécies, sementes (SAZIMA & ZAMPROGNO, 1985;MACHADO-ALLISON & GARCIA, 1986; NICO & TAPHORN, BEHR & SIGNOR 1988;WINEMILLER, 1989;NICO, 1990;POMPEU, 1999;ALVIM et al, 1999). Os adultos ingerem principalmente pedaços de peixes, pequenos peixes inteiros e escamas (NICO & TAPHORN, 1988;MAGALHÃES et al, 1990;BISTONI & HARO, 1995;ALMEIDA et al, 1998;POMPEU, 1999;AGOSTINHO et al, 2003;OLIVEIRA et al, 2004).…”

unclassified

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Distribuição e alimentação de duas espécies simpátricas de piranhas Serrasalmus maculatus e Pygocentrus nattereri (Characidae, Serrasalminae) do rio Ibicuí, Rio Grande do Sul, Brasil

Behr

Signor

2008

Iheringia, Sér. Zool.

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ABSTRACT. Distribution and feeding of two sympatric species of piranhas Serrasalmus maculatus and Pygocentrus nattereri (Characidae, Serrasalminae) of the Ibicuí river, State of Rio Grande do Sul, Brazil. Two species of piranhas occur in the Ibicuí River, one of the main tributaries of the Uruguay River in southern Brazil, Serrasalmus maculatus Kner, 1858 and Pygocentrus nattereri Kner, 1858. In order to analyze the distribution and feeding habits of these species we conducted collecting expeditions from December 1999 to January 2002, using a variety of fishing gears in three sites along the river, both in lentic and lotic habitats. A total of 203 individuals of S. maculatus and 86 of P. nattereri were caught, mostly in lentic habitats and closer to the Uruguay River, were P. nattereri seems to be more concentrated. The number of individuals captured at different times did not show variation in P. nattereri while the number of S. maculatus captured at mid-night was the highest. Young S. maculatus (2-4 cm standard length) fed mainly on fish fins and insects. Fish was the predominant item in remaining size classes for both species, with intra-and inter-specific overlap in larger classes (8-16 cm and >16 cm standard length). No differences in the repletion index between day time or habitats, were observed for the two species.

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Dieta da pirambeba Serrasalmus brandtii Reinhardt (Teleostei, Characidae) em quatro lagoas marginais do rio São Francisco, Brasil

Cited by 23 publications

References 9 publications

Diet shifts related to body size of the pirambeba Serrasalmus brandtii Lütken, 1875 (Osteichthyes, Serrasalminae) in the Cajuru Reservoir, São Francisco River Basin, Brazil

Diet shifts related to body size of the pirambeba Serrasalmus brandtii Lütken, 1875 (Osteichthyes, Serrasalminae) in the Cajuru Reservoir, São Francisco River Basin, Brazil

Diet composition and food overlap of Acestrorhynchus britskii and A. lacustris (Characiformes: Acestrorhynchidae) from Sobradinho reservoir, São Francisco river, Bahia State

Distribuição e alimentação de duas espécies simpátricas de piranhas Serrasalmus maculatus e Pygocentrus nattereri (Characidae, Serrasalminae) do rio Ibicuí, Rio Grande do Sul, Brasil

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