Consulta: creatorFacets:"Frédou, Flávia Lucena"
Registros recuperados: 2
Data/hora: 13/06/2024 06:39:32

Trophic resource partitioning of two snook fish species (Centropomidae) in tropical estuaries in Brazil as evidenced by stable isotope analysis
Provedor de dados: 5
Autores: Guazzelli Gonzalez, Julio; Ménard, Frédéric; Le Loc'H, François; Agrelli De Andrade, Humber; Pontes Viana, Andréa; Ferreira, Valdimere; Frédou, Flávia Lucena; Lira, Alex Souza; Munaron, Jean-marie; Frédou, Thierry.
We investigated the trophic niches and the resource partitioning of two snook species, the common (Centropomus undecimalis) and the fat snook (C. parallelus), in four tropical estuaries of the northeastern Brazil, using stable isotope analyses of carbon (δ13C) and nitrogen (δ15N). Fish specimens, mainly juveniles, basal resources and a primary consumer were collected in 2015 during dry and rainy seasons in all estuaries, which exhibited differences in system size, geomorphologic shapes, levels of sea access and anthropic pressures. Potential effect of factors like fish body length, estuary and seasonality on isotope ratios were investigated. Positive relationships between the size of fish and δ15N values were found, regardless the species. Our results...
Tipo: Text
Palavras-chave: Brackish water fish; Trophic relationships; Carbon; Nitrogen; Centropomus.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00506/61767/65745.pdf

Aspects of the reproductive biology and characterization of Sciaenidae captured as bycatch in the prawn trawling in the northeastern Brazil
Provedor de dados: 3
Autores: Silva Júnior, Carlos Antonio Beserra da; Viana, Andréa Pontes; Frédou, Flávia Lucena; Frédou, Thierry.
The Brazilian prawn fishery, as other bottom trawling fisheries, is considered quite efficient in catching the target species but with low selectivity and high rates of bycatch. The family Sciaenidae prevails among fish species caught. The study was conducted in the Pernambuco State (Barra de Sirihaém), northeastern Brazil. From August 2011 to July 2012, 3,278 sciaenid specimens were caught, distributed into 16 species, 34.2% males and 41.5% females. Larimus breviceps, Isopisthus parvipinnis, Paralonchurus brasiliensis and Stellifer microps were the most abundant species. The area was considered a recruitment and reproduction area with the highest reproductive activity between December 2011 and July 2012. The constant frequency of mature I. parvipinnis and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias; Recursos Pesqueiros e Engenharia de Pesca Demersal; Trawling; Sexual maturity; Coastal zone Reproductive biology Biologia reprodutiva.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/24962