Consulta: subjectFacets:"Upper Paraná River basin"
Registros recuperados: 2
Data/hora: 17/06/2024 15:20:01

Molecular characterization of the invasive aquatic macrophyte Hydrilla verticillata (Hydrocharitaceae) in Brazil
Provedor de dados: 42
Autores: LUCIO,LÉIA CAROLINA; THOMAZ,SIDINEI M.; PRIOLI,SÔNIA MARIA A.P.; BONI,TALGE A.; OLIVEIRA,ALESSANDRA V. DE; PRIOLI,ALBERTO JOSÉ.
Abstract: Invasive populations of macrophytes are widely distributed and have been successfully introduced and established in freshwater habitats. Hydrilla verticillata was first recorded in 2005 in the Upper Paraná River floodplain and in 2007 at the Itaipu Reservoir (Brazil-Paraguay border, ca. 300 km downstream from its first record). However, its genetic variability within different sites in South America is unknown. We used nucleotide sequences corresponding to the trnL-trnF fragment cpDNA to genetically characterize populations of H. verticillata in different ecosystems of the Upper Paraná River basin. The results indicated an absence of genetic differentiation within and between populations of the basin, and even individuals collected 600 km apart...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CpDNA; Genetic variability; TrnL-trnF; Upper Paraná River basin.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500623

Update on the ichthyofauna of the Piquiri River basin, Paraná, Brazil: a conservation priority area
Provedor de dados: 49
Autores: Cavalli,Daiane; Frota,Augusto; Lira,Angelica Dorigon; Gubiani,Éder André; Margarido,Vladimir Pavan; Graça,Weferson Júnio da.
Abstract: Knowledge of the fish species in river basins is among the minimum requirements for the management of water and fish resources. Therefore, the aim of this study was to update the fish species composition of the Piquiri River basin, upper Paraná River basin. Data were gathered from recent information published in specialized literature and records for ichthyology collections. This update reports the occurrence of 152 fish species distributed in 8 orders, 31 families, and 89 genera. Non-native species accounted for 20% of all species, and the construction of the Itaipu Power Plant and its fish ladder were the main vectors of introduction. Three percent of the species were endangered, and 11% were classified as migratory. The Piquiri River basin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ichthyofaunal survey; Species knowledge; Preservation; Upper Paraná River basin.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000200305