Results 31 to 40 of about 6,702 (249)

Evidence for the true type-locality of Rhamdia quelen (Siluriformes: Heptapteridae), and the geographical origin and invalid neotype designation of four of its synonyms [PDF]

Neotropical Ichthyology, 2020
Historical information on the probable type-locality of Pimelodus quelen and of its four junior synonyms that share the same neotype, Pimelodus namdia, Pimelodus sebae, Heterobranchus sextentaculatus, and Silurus rivularis, is presented and discussed ...
Stefan Koerber, Roberto E. Reis
doaj   +1 more source

Reappraisal of Rhamdia branneri Haseman, 1911 and R. voulezi Haseman, 1911 (Siluriformes: Heptapteridae) from the rio Iguaçu with notes on their morphometry and karyotype

Neotropical Ichthyology
The species Rhamdia branneri Haseman, 1911 and the subspecies Rhamdia branneri voulezi Haseman, 1911 from rio Iguaçu are currently recognized as synonyms of Rhamdia quelen (Quoy & Gaimard, 1824).
Julio Cesar Garavello, Oscar Akio Shibatta   +1 more
doaj   +1 more source

AVALIAÇÃO ERITROCITÁRIA E BIOQUÍMICA DE JUNDIÁS (Rhamdia quelen) SUBMETIDOS À DIETA COM DIFERENTES NÍVEIS PROTÉICOS E ENERGÉTICOS

Ciência Animal Brasileira, 2011
Objetivou-se com este trabalho avaliar o efeito de diferentes rações sobre os parâmetros eritrocitários (hemácias, hemoglobina e hematócrito) e bioquímicos (glicose, albumina e proteína) de jundiás (Rhamdia quelen).
Leticia Hayashi Higuchi, Aldi Feiden, Marcia Luzia Ferrarezi Maluf, Jackeline Marcante Dallagnol, Micheli Zaminhan, Wilson Rogério Boscolo   +5 more
doaj   +1 more source

ASSOCIAÇÃO ENTRE A PRESENÇA DE UM FATOR DE 38 kDa NO PLASMA SEMINAL E A INIBIÇÃO DA MOTILIDADE ESPERMÁTICA NO JUNDIÁ Rhamdia quelen

Ciência Animal Brasileira, 2010
Fatores proteicos tem sido indentificados no plasma seminal de peixes e mamíferos e, em algumas situações, associados com indicadores de qualidade espermática.
Vinicius Farias Campos, Tiago Collares, Fabiana Kömmling Seixas, Cristian Kaefer, Paulo Varoni Cavalcanti, Marta Gonçalves Amaral, Thomaz Lucia Jr., João Carlos Deschamps   +7 more
doaj   +1 more source

Gross brain morphology of Rhamdia quelen (Quoy & Gaimard 1824) (Ostariophysi: Siluriformes: Heptapteridae)

Papéis Avulsos de Zoologia, 2018
The brain gross morphology of Rhamdia quelen is described and compared with seven species of six genera of Heptapteridae. Interspecific variation in shape, size, and position of brain subdivisions was observed in all examined species.
Vitor Pimenta Abrahão, Fábio Müller dos Reis de Salles Pupo, Oscar Akio Shibatta   +2 more
doaj   +1 more source

Occurrence of natural triploidy in Rhamdia quelen (Siluriformes, Heptapteridae)

Genetics and Molecular Research, 2010
Five specimens of Rhamdia quelen collected from the Lindóia Stream, PR, Brazil, were cytogenetically analyzed. The diploid chromosome number found was 58, including 30 metacentric, 16 submetacentric, 10 subtelocentric, and 2 acrocentric chromosomes. Supernumerary or B chromosomes, frequently observed in this fish group, were not detected.
J R, Tsuda, V P O, de Moraes, L, Giuliano-Caetano, A L, Dias   +3 more
openaire   +2 more sources

Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil

Journal of Fish Biology, EarlyView.
Abstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Lucas E. P. Kampfert, João C. Maicrovicz, Daniel R. Blanco, Denise Lange, Carla S. Pavanelli, Heleno Brandão   +5 more
wiley   +1 more source

Identificação de neomacho de Jundiá Rhamdia quelen (Quoy e Gaimard, 1824) através do teste de progênie [PDF]

, 2015
TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Agrárias. Curso de Engenharia de Aquicultura.O objetivo deste estudo foi identificar neomachos de Rhamdia quelen através de teste de progênie.
Borges, Bruno Augusto Amato
core  

Tails of Biodiversity: Vertebrate Community Assessment in a Neotropical River Basin via eDNA Metabarcoding

Environmental DNA, Volume 8, Issue 1, January–February 2026.
This study used environmental DNA (eDNA) metabarcoding to assess vertebrate biodiversity in headwater streams of the Rio Santo Antônio basin, southeastern Brazil, a tributary of the Rio Doce. A total of 119 vertebrate OTUs were identified, with oxidation–reduction potential emerging as the strongest environmental predictor of species richness.
Larissa Moreira‐Silva, Rennan Garcias Moreira, Jim Perry, Walisson Kenedy‐Siqueira, Guilherme Costa Baião, Daniel Negreiros, Fernando Figueiredo Goulart, Josimar Daniel Gomes, Geraldo Wilson Fernandes   +8 more
wiley   +1 more source

Genetic variability of captive populations of Rhamdia quelen (Teleostei: Pimelodidae) using microsatellite markers

Biotemas, 2017
The analysis of genetic variability in populations that are candidates for breeding programs is important for selecting a base population, which maximizes genetic divergence.
Marina Virmond, Danielle Conceição, Hilton Amaral Junior, Rodolfo Luis Petersen   +3 more
doaj   +1 more source