Consulta: subjectFacets:"Genidens genidens"
Registros recuperados: 2
Data/hora: 13/06/2024 04:19:57

Carbon primary sources and estuarine habitat use by two congeneric ariid catfishes in a subtropical coastal lagoon
Provedor de dados: 103
Autores: Pereyra,Paula E.R.; Mont'Alverne,Renata; Garcia,Alexandre M.
ABSTRACT Although ariid catfishe species are known to use coastal systems during some stages of their life cycles, the energetic contribution of estuarine resources and habitat use by many species in this family are still unclear. We used stable isotope analyses to estimate the assimilation of primary carbon sources and to infer the use of estuarine and freshwater habitats by two ariid catfishes Genidens barbus (Lacepède, 1803) and Genidens genidens (Cuvier, 1829). An isotopic mixing model revealed that juveniles of both catfish species consume considerable amounts of estuarine-produced carbon sources (G. barbus: 54-87% and G. genidens: 36-84%). However, G. genidens adults rely more on freshwater-derived carbon sources (31-77%) than on estuarine sources...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genidens barbus; Genidens genidens; Isotopic mixing models; Patos Lagoon; Stable isotopes.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000200501

Life history of three catfish species (Siluriformes: Ariidae) from southeastern Brazil
Provedor de dados: 49
Autores: Denadai,Márcia Regina; Bessa,Eduardo; Santos,Flávia Borges; Fernandez,Wellington Silva; Santos,Fernanda Motta da Costa; Feijó,Mônica Malagutti; Arcuri,Andreza Cristina Dias; Turra,Alexander.
This study evaluated the spatio-temporal distribution, reproduction and diet of the catfishes Genidens genidens, G. barbus and Aspistor luniscutis in Caraguatatuba Bay. Their sizes were recorded and the sex and reproductive stage identified. The abundance was compared between areas (South and North) and among months (August 2003 - October 2004). The species had different spatial distributions, allowing them to coexist. The temporal distribution reflected their tendencies to migrate in the reproductive period, as evidenced by the dominance of small immature individuals in the bay. G. genidens tended to reproduce in winter, and A. luniscutis in spring. The diet of G. genidens consisted of crustaceans, mollusks (shells), fish scales, ostracods, and bivalve...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spatio-temporal distribution; Diet; Genidens genidens; Genidens barbus; Aspistor luniscutis; Caraguatatuba Bay.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400008