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	Provedor de dados Neotropical Ichthyology (2) Autor Stewart,Donald J. (2) Silva,Eddy A. (1) Teece,Mark A. (1) Watson,L. Cynthia (1) Palavra-chave Black prochilodus (1) Condition factor (1) Conservation (1) Essequibo River basin (1) Gonadalsomatic index (1) Life-history (1) Management (1) Osteoglossidae (1) Stable isotopes (1) Stomach fullness (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2017 (1) 2013 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Trophic ecology of Arapaima in Guyana: giant omnivores in Neotropical floodplains Neotropical Ichthyology Watson,L. Cynthia; Stewart,Donald J.; Teece,Mark A.. Using stable nitrogen and carbon isotope signatures, we investigated the trophic ecology and identified potential prey fish groups supporting the giant Arapaima within floodplain lakes of the Essequibo River basin in southwestern Guyana. Morphological descriptions of feeding structures and digestive tract are presented together with preliminary data on Arapaima diets. Stable isotope results suggest that algivorous/detritivorous and omnivorous fishes contributed most to Arapaima biomass, and generally, that was consistent with what is known about Arapaima diets. Stable nitrogen isotope ratios for piscivorous fishes in these lakes were higher than nitrogen isotope ratios for Arapaima, indicating that piscivorous fishes are unlikely to constitute a major... Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation; Essequibo River basin; Management; Osteoglossidae; Stable isotopes. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000200341 Reproduction, feeding and migration patterns of Prochilodus nigricans (Characiformes: Prochilodontidae) in northeastern Ecuador Neotropical Ichthyology Silva,Eddy A.; Stewart,Donald J.. ABSTRACT The black prochilodus, Prochilodus nigricans, is an important food fish distributed throughout aquatic habitats of the Ecuadorian Amazon. We sampled gonad weight, body condition, and feeding of this species to address the question of whether changes in these biological parameters are related to hydrological variation and migration patterns. High frequency of empty stomachs and poor body condition corresponded to migration periods. Gonad condition analysis revealed a single, discrete spawning period in April (end of rising water season). We synthesized our own and published observations on migration patterns of black prochilodus and presumptive factors that influence those movements. Mature individuals make lateral migrations from peripheral... Tipo: Info:eu-repo/semantics/article Palavras-chave: Black prochilodus; Condition factor; Gonadalsomatic index; Life-history; Stomach fullness. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000300212 Registros recuperados: 2 Primeira ... 1 ... Última

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