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	Provedor de dados BJB (2) Autor AGOSTINHO,A. A. (2) BENEDITO-CECILIO,E. (1) FUGI,R. (1) HAHN,N. S. (1) LOPES,C. de A. (1) Palavra-chave Bottom-feeding (1) Leporinus friderici (1) Paraná River (1) Paraná River basin (1) Reproduction (1) Reservoir (1) Trophic morphology (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2001 (1) 2000 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última The reproductive strategy of Leporinus friderici (Characiformes, Anostomidae) in the Paraná River basin: the effect of reservoirs BJB LOPES,C. de A.; BENEDITO-CECILIO,E.; AGOSTINHO,A. A.. The reproductive strategy of a species depends upon the interaction between intrinsic and extrinsic factors. Examining the population of Leporinus friderici in two reservoirs of the Upper Paraná River basin in reference to first gonadal maturation and breeding season and sites, the present investigation tested whether the environment formed by damming promoted spatial and temporal changes in the reproductive strategy of this species. Analyses of sex ratios showed that females significantly predominated in Itaipu, while in Corumbá the sexes were about equal with a slight predominance of males. Size-associated sexual dimorphism was observed, that is females dominated the longer length categories, and males the shorter. The minimum size at which L. friderici... Tipo: Info:eu-repo/semantics/article Palavras-chave: Paraná River basin; Leporinus friderici; Reproduction; Reservoir. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000200009 Trophic morphology of five benthic-feeding fish species of a tropical floodplain BJB FUGI,R.; AGOSTINHO,A. A.; HAHN,N. S.. This study describes the morphology of the digestive apparatus and the size and organic content of the ingested food of five species of benthic-feeding fishes (Prochilodus lineatus, Steindachnerina insculpta, Loricariichthys platymetopon, Trachydoras paraguayensis e Iheringichthys labrosus). The samples were taken in the floodplain of the up Paraná River in February and August 1991. The results suggested that these species have different mouth, teeth, gill rakers, stomach and intestine length. These morphologic characteristics were related with the type, size and nutritional quality of the food ingested. Although these species feed on the bottom, the morphologic divergences probably explain the differences in diet. Tipo: Info:eu-repo/semantics/article Palavras-chave: Trophic morphology; Bottom-feeding; Paraná River. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000100005 Registros recuperados: 2 Primeira ... 1 ... Última

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