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	Provedor de dados Neotropical Ichthyology (2) Autor Costa,Rosa Maria Rodrigues da (2) Amadio,Sidinéia Aparecida (1) Fabré,Nidia Noemí (1) Mateus,Lúcia Aparecida de Fátima (1) Tuset,Víctor Manuel (1) Palavra-chave Amazon Basin (1) Growth increments (1) Morphotypes (1) Otolith shape (1) Pantanal (1) Phenotypes (1) Reproduction (1) Sexual proportion (1) Size at first maturity (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2018 (1) 2009 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Reproductive biology of pacu Piaractus mesopotamicus (Holmberg, 1887) (Teleostei: Characidae) in the Cuiabá River Basin, Mato Grosso, Brazil Neotropical Ichthyology Costa,Rosa Maria Rodrigues da; Mateus,Lúcia Aparecida de Fátima. The purpose of this study was to analyze the reproductive strategy and life-history traits involved in the reproductive processes of P. mesopotamicus in two regions of the Cuiabá River basin, the first of these encompassing its headwaters (Cuiabazinho River - Rosário Oeste) and the other the flood area of the Cuiabá River (Porto Cercado - Poconé). A total of 391 individuals were sampled monthly from August 2006 to July 2007, 159 from the headwaters and 232 from the flood area. The size structure indicated that the females in the headwaters attain longer lengths than the males, while no differences in length were found in the flood area. Females predominated in the headwaters, while males outnumbered females in the flood area. The reproductive period in the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Reproduction; Size at first maturity; Sexual proportion; Pantanal. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300012 Plasticity in the shape and growth pattern of asteriscus otolith of black prochilodus Prochilodus nigricans (Teleostei: Characiformes: Prochilodontidae) freshwater Neotropical migratory fish Neotropical Ichthyology Costa,Rosa Maria Rodrigues da; Fabré,Nidia Noemí; Amadio,Sidinéia Aparecida; Tuset,Víctor Manuel. ABSTRACT Using morphometric measurements and wavelets functions, the asterisci otoliths of curimatã, Prochilodus nigricans were analysed to identify the variation in shape and growth increment of individuals from Solimões, Japurá and Negro rivers of the Amazon basin, Brazil. The morphometric and morphological analyses did not reveal evidences of population segregation among rivers, but variations were found in the estimation of otolith growth increment. Also, the otolith shape showed a high variability between individuals, identifying four morphotypes. Morphotype 1 shows a more oval shape with a posterior zone clearly rounded; Morphotype 2 shows the posterior zone rounded, but the anterior end is more elongated; Morphotype 3 shows a completely different... Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon Basin; Growth increments; Morphotypes; Otolith shape; Phenotypes. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400215 Registros recuperados: 2 Primeira ... 1 ... Última

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