Results 41 to 50 of about 1,942 (155)

Estudo morfológico e histoquímico do tubo digestivo de eleuteroembriões e larvas de Leporinus obtusidens (Valenciennes, 1836)

, 2012
Leporinus obtusidens apresenta características zootécnicas interessantes e promissoras para o cultivo em piscicultura. Na maioria das espécies cultivadas, as larvas, ao iniciarem a alimentação exógena, são organismos cujo desenvolvimento ainda não se ...
Chedid, Renata Alari
core   +3 more sources

Spatial variations in fish assemblage structure in a southeastern Brazilian reservoir

Brazilian Journal of Biology
We assessed the fish assemblage structure and composition of Nova Ponte Reservoir (Araguari River, Upper Paraná Basin, Brazil). We observed significant differences in abundance (p = 0.0003), richness (p = 0.0005) and diversity (p = 0.02) between ...
B. O. Sanches, R. M. Hughes, D. R. Macedo, M. Callisto, G. B. Santos   +4 more
doaj   +1 more source

Fish Assemblages in an Urbanized Neotropical Basin: Influence of Environmental Factors Across Dry and Rainy Periods

International Review of Hydrobiology, Volume 111, Issue 2, December 2026.
ABSTRACT This study investigated the effects of season and environmental disturbances on fish communities in neotropical rivers of the Sorocaba basin, a Sub‐Basin of the Paraná River in Southeast Brazil, based on sampling 1196 individuals from 49 species, including two non‐native and one threatened with extinction.
Natalia S. Alves, Daiane E. Cavallari, Welber S. Smith   +2 more
wiley   +1 more source

Bioimpedância como ferramenta de análise da composição corporal de Piava, Leporinus obsutidens [PDF]

, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Programa de Pós-Graduação em Aquicultura, Florianópolis, 2014.Dentre as técnicas utilizadas para avaliar a composição corporal de peixes, tornam-se ...
Arantes, Túlio Barbosa
core  

Illuminating the Dark: Using eDNA Metabarcoding to Study the Unique Ichthyofauna of the Furnas Formation Sinkholes

Environmental DNA, Volume 7, Issue 4, July–August 2025.
Using eDNA metabarcoding, we assessed fish diversity in isolated sinkholes in southern Brazil, uncovering signs of local extinction and species persistence. This approach offers a non‐invasive tool for biodiversity assessment and informs conservation efforts in unique karst environments.
Luz E. De la Ossa‐Guerra, Daniel M. Limeira, Roger H. Dalcin, Heron O. Hilário, Daniel C. Carvalho, Roberto F. Artoni   +5 more
wiley   +1 more source

Análise citogenética de Leporinus cf. obtusidens e Leporellus vittatus (Characiformes, Anostomidae) da bacia do rio São Francisco

, 2018
Anostomidae é uma família altamente especiosa entre os Characiformes, compreendendo 156 espécies válidas, as quais estão distribuídas na região Neotropical.
Deon, Geize Aparecida, Nogaroto, Viviane, Dulz, Thais Aparecida, Vicari, Marcelo Ricardo, Lorscheider, Carla Andréia, Noleto, Rafael Bueno, Nascimento, Viviane Demetrio, Moreira Filho, Orlando   +7 more
core   +1 more source

Length‒Weight and Length‒Length Relationships of Freshwater Fish Species Caught by Professional Fishermen in the Itaipu Reservoir, Brazil

Journal of Applied Ichthyology, Volume 2025, Issue 1, 2025.
Length‒weight relationships (LWRs) and length‒length relationships (LLRs) were estimated for 63 and 58 freshwater fish species, respectively, captured in the Itaipu Reservoir, Paraná River Basin, Paraná State, Brazil. Sampling was carried out from March 1987 to July 2024 at 63 professional fishing sites within the reservoir’s area of influence ...
Éder André Gubiani, Luiz Guilherme dos Santos Ribas, Anderson Luís Maciel, Geuza Cantanhêde, Laís Thayse Meier, Pitágoras Augusto Piana, Caroline Henn, Yintao Jia   +7 more
wiley   +1 more source

The 2,4-D herbicide effects on acetylcholinesterase activity and metabolic parameters of piava freshwater fish (Leporinus obtusidens)

Ecotoxicology and Environmental Safety, 2008
The effects of 2,4-D (1 or 10 mg/L) on acetylcholinesterase (AChE) and metabolic parameters were evaluated in piava (Leporinus obtusidens) after 96 h. AChE activity was significantly reduced in the brain at a concentration of 10 mg/L and in the muscle at both concentrations tested.
Milene Braga, da Fonseca, Lissandra, Glusczak, Bibiana Silveira, Moraes, Charlene Cavalheiro, de Menezes, Alexandra, Pretto, Miguel Angel, Tierno, Renato, Zanella, Fábio Ferreira, Gonçalves, Vânia Lúcia, Loro   +8 more
openaire   +2 more sources

Statistical distribution models for migratory fish in Jacuí basin, South Brazil

Neotropical Ichthyology
The aim of the present study was to identify the distribution patterns of migratory fishes in the Jacuí river basin (Rio Grande do Sul, South Brazil), proposing a statistical model of presumed distribution based on geomorphologic environmental data ...
Thaís P. Alves, Nelson F. Fontoura
doaj   +1 more source

Incubação dos ovos e larvicultura da piava (Leporinus obtusidens): efeito do pH [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Programa de Pós-Graduação em Aquicultura, Florianópolis, 2012.A piava, Leporinus obtusidens, é um peixe Anostomidae pertencente à ordem dos Characiformes, que ...
Gosmann, Mário Augusto
core