Consulta: creatorFacets:"Cavalheiro,Laísa Wociechoski"
Registros recuperados: 2
Data/hora: 12/06/2024 17:39:23

Trophic strategy of Atlantirivulus riograndensis (Cyprinodontiformes: Rivulidae), a non-annual rivulid threatened by extinction, in a perennial environment, Brazil)
Provedor de dados: 83
Autores: Cavalheiro,Laísa Wociechoski; Fialho,Clarice Bernhardt.
ABSTRACT Rivulidae includes non-annual fish of perennial habitats and annual fish of temporary wetlands. The objective of this research was to investigate the trophic strategy of Atlantirivulus riograndensis in a perennial environment. Sampling occurred in an environmental conservation unit in the Pampa biome, Brazil. Quantification of the diet followed the volumetric method. Consumption of autochthonous material as the main food source of the species followed the pattern of Rivulidae. Species is zooplanktonic when young. Food spectrum is broadened and insectivorousness increases with ontogeny, revealing a specialist trend in the feeding strategy of A. riograndensis. The most diverse feeding occurs in the spring and summer seasons in which the presence of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Autochthonous resources; Ontogeny; Seasonality; Specialist; Trophic pattern.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100223

Fishes community composition and patterns of species distribution in Neotropical streams
Provedor de dados: 49
Autores: Cavalheiro,Laísa Wociechoski; Fialho,Clarice Bernhardt.
Abstract: The ichthyofauna of streams in the Neotropical region is not yet fully known. This study aims to investigate the ichthyofauna composition of six streams of the Ijuí River sub-basin, Rio Grande do Sul State, inserted in the Uruguay River basin, as to contribute to the knowledge of fishes species richness and distribution in the south of Brazil. Sampling was carried out between July 2015 and May 2016, bimonthly, using the technique of electric fishing to collect the fishes. Spatial variations (per sampled stream) in the ichthyofauna composition were tested with a permutational multivariate analysis of variance. In total, we collected 5,029 individuals from 55 species, 13 families and five orders. From these species, 17 are endemic to the Uruguay...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Characidae; Heptapteridae; Loricariidae; Richness; Uruguay River basin.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000100302