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	Provedor de dados Biota Neotropica (1) Neotropical Ichthyology (1) Autor Manna,Luisa Resende (2) Mazzoni,Rosana (2) Rezende,Carla Ferreira (2) Miranda,Jean Carlos (1) Palavra-chave Atlantic rainforest (1) Ecomorphology (1) Environmental resources (1) Micro-habitat (1) Non-stochastic use (1) Rain Forest (1) Snorkeling (1) Stream-dwelling fish (1) Trophic niche overlap (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2020 (1) 2014 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Habitat use by Astyanax taeniatus (Jenyns, 1842) (Characiformes: Characidae) in a coastal stream from Southeast Brazil Neotropical Ichthyology Manna,Luisa Resende; Rezende,Carla Ferreira; Mazzoni,Rosana. The habitat use of a stream-dwelling Astyanax taeniatus from the State of Rio de Janeiro was investigated. We performed 12 h of underwater observation in a 200 m long stretch in the upper Roncador stream and quantified the following microhabitat descriptors: (i) water velocity, (ii) distance from the stream bank, (iii) substratum, and (iv) water column depth. Microhabitat selectivity was analyzed by comparing the microhabitat used by fish and the microhabitat available in the study site as well as by applying the Ivlev Electivity Index to the microhabitat use data. Differences in the use and availability of the various microhabitats revealed non-stochastic patterns of spatial occupation by A. taeniatus, which was selective for two of the four analyzed... Tipo: Info:eu-repo/semantics/article Palavras-chave: Snorkeling; Micro-habitat; Rain Forest; Non-stochastic use; Environmental resources. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000100187 Feeding strategy and morphology as indicators of habitat use and coexistence of two loricariid fishes from a Brazilian coastal stream Biota Neotropica Manna,Luisa Resende; Miranda,Jean Carlos; Rezende,Carla Ferreira; Mazzoni,Rosana. Abstract: We aimed to evaluate the relationship between form and function of two Loricariidae species (Hypostomus punctatus and Parotocinclus maculicauda) from a Neotropical coastal stream. We performed morphological-dietary analysis and discussed their coexistence strategies, as well. We hypothesized that both species use similar food resources according to their morphology but differences in habitat use facilitate their coexistence. In order to test this hypothesis, morphology, diet and habitat use were analyzed for both species. Trophic variance and the Pianka Niche Overlap index were calculated to explore the differences in trophic niche. Correlations between species abundance and water flow were applied to test habitat use. Principal Component... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecomorphology; Trophic niche overlap; Stream-dwelling fish; Atlantic rainforest. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000100212 Registros recuperados: 2 Primeira ... 1 ... Última

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