47 research outputs found
RevisĂŁo do gĂȘnero oligosarcus gĂŒnther, 1864 (actynopterigii, characidae) para o sistema da laguna dos patos
Get PDFReproductive period, fecundity and histology of gonads of two cheirodontines (Ostariophysi: Characidae) with different reproductive strategies - insemination and external fertilization
Full text linkTrophic strategy of Atlantirivulus riograndensis (Cyprinodontiformes: Rivulidae), a non-annual rivulid threatened by extinction, in a perennial environment, Brazil)
Full text linkReproductive biology of Bryconamericus iheringii (Ostariophysi: Characidae) from rio VacacaĂ, RS, Brazil
Full text linkDiet-morphology relationship in the stream-dwelling characid Deuterodon stigmaturus (Gomes, 1947) (Characiformes: Characidae) is partially conditioned by ontogenetic development
Full text linkBiologia reprodutiva de Pachyurus bonariensis (Perciformes, Sciaenidae) na fase pré-represamento do arroio Taquarembó, Sul do Brasil
Full text linkBiologia alimentar de quatro espécies simpåtricas de Cheirodontinae (Characiformes, Characidae) do rio Cearå Mirim, Rio Grande do Norte
Full text linkEstudo comparado da taxocenose de peixes em dois ambientes aquĂĄticos do Parque Estadual de ItapuĂŁ, sul do Brasil
Full text linkBiologia alimentar de Steindachnerina brevipinna (Characiformes, Curimatidae) do rio IbicuĂ-mirim, Rio Grande do Sul, Brasil Feeding biology of Steindachnerina brevipinna (Characiformes, Curimatidae) in the IbicuĂ-mirim river, Rio Grande do Sul, Brazil
No full textThe feeding biology of Steindachnerina brevipinna (Eigenmann & Eigenmann, 1889) is described based on specimens collected in the IbicuĂ-Mirim river, Rio Grande do Sul, Brazil, from April 2001 to March 2002. Diet description is based on the analysis of the frequency of occurrence and index of dietary importance of the ingested items. The monthly variation of stomach repletion, hepatosomatic and intestinal indexes was also analyzed. Major feeding activity occurred before (May, June and July 2001) the reproductive period, with the hepatosomatic index values showing similar variation along the year. Both the mean intestinal quotient and the analysis of the main ingested items (Bacillariophyta and Chlorophyta algae) indicate a detritivorous diet
Biologia alimentar de Steindachnerina brevipinna (Characiformes, Curimatidae) do rio IbicuĂ-mirim, Rio Grande do Sul, Brasil
No full textThe feeding biology of Steindachnerina brevipinna (Eigenmann & Eigenmann, 1889) is described based on specimens collected in the IbicuĂ-Mirim river, Rio Grande do Sul, Brazil, from April 2001 to March 2002. Diet description is based on the analysis of the frequency of occurrence and index of dietary importance of the ingested items. The monthly variation of stomach repletion, hepatosomatic and intestinal indexes was also analyzed. Major feeding activity occurred before (May, June and July 2001) the reproductive period, with the hepatosomatic index values showing similar variation along the year. Both the mean intestinal quotient and the analysis of the main ingested items (Bacillariophyta and Chlorophyta algae) indicate a detritivorous diet
