Results 1 to 10 of about 6,914 (213)

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, 2016
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   +4 more sources

Cryptic diversity and diversification processes in three cis-Andean Rhamdia species (Siluriformes: Heptapteridae) revealed by DNA barcoding [PDF]

Genetics and Molecular Biology, 2021
The wide distribution of the Neotropical freshwater catfish Rhamdia offers an excellent opportunity to investigate the historical processes responsible for modeling South America’s hydrogeological structure.
Josiane Ribolli, Evoy Zaniboni Filho, Bianca Maria Soares Scaranto, Oscar Akio Shibatta, Carolina Barros Machado   +4 more
doaj   +2 more sources

Integrative morphometric and molecular analyses reveal possible genetic contamination of silver catfish populations of the genus Rhamdia in Neotropical River basins. [PDF]

J Fish Biol
Abstract Rhamdia quelen, Rhamdia branneri and Rhamdia voulezi are morphologically similar species that, until recently, were considered synonymous. Although R. quelen has wide distribution in the Neotropical region, R. branneri and R. voulezi are sympatric and endemic species of the Iguaçu River basin.
Bignotto TS, de Souza HB, da Silva Bronzim RC, Maniglia TC, Baumgartner D.   +4 more
europepmc   +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. [PDF]

J Fish Biol
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
Kampfert LEP, Maicrovicz JC, Blanco DR, Lange D, Pavanelli CS, Brandão H.   +5 more
europepmc   +2 more sources

DNA barcoding confirms the occurrence of Rhamdia branneri and Rhamdia voulezi (Siluriformes: Heptapteridae) in the Iguaçu River Basin [PDF]

Neotropical Ichthyology, 2017
DNA barcoding is a widely utilized molecular-based identification of species and taxonomic resolutions. Until recently, Rhamdia voulezi and Rhamdia branneri were considered species synonyms of Rhamdia quelen; however, morphological and cytogenetic ...
Josiane Ribolli, Bianca Maria Scaranto, Oscar Akio Shibatta, Robie Allan Bombardelli, Evoy Zaniboni-Filho   +4 more
doaj   +3 more sources

Biologia do jundiá Rhamdia quelen (Teleostei, Pimelodidae) [PDF]

Ciencia Rural, 2000
O jundiá, Rhamdia quelen, é encontrado desde o centro da Argentina até o sul do México, e seu cultivo está aumentando no sul do Brasil. Portanto, o objetivo desta revisão é apresentar os dados existentes até o momento sobre a biologia dessa espécie. R. quelen pode atingir 50cm de comprimento e 3kg de peso, possui hábito noturno e habita locais calmos e
Jaqueline Ineu Golombieski, Bernardo Baldisserotto   +1 more
exaly   +4 more sources

Total mercury contamination in fish species of Northwestern Ecuador and potential human health risks. [PDF]

PLoS ONE
Gold mining activities are often suspected to increase mercury pollution-associated with human health and ecological risks in aquatic ecosystems. The objective of this study was to quantify total mercury (THg) concentrations in fish from four different ...
Gabriela S Yánez-Jácome, Andrés Merino-Viteri, Eduardo Rebolledo Monsalve, Roberto Xavier Supe Tulcan, Laurence Maurice, Hugo Navarrete   +5 more
doaj   +2 more sources

Morphological and molecular evidence reveals a new species of Characidium from the Ucayali-Urubamba Piedmont, Peru, and novel molecular clades are proposed within the genus. [PDF]

J Fish Biol
Abstract A new species of Characidium is described from the Urubamba River basin, within the Ucayali‐Urubamba Piedmont ecoregion, Peru. The new species can be readily distinguished from all congeners, except Characidium cacah, Characidium chicoi, Characidium helmeri, Characidium mirim, Characidium nana, Characidium nupelia, Characidium sterbai ...
Oliveira-Silva L, Britzke R, Meza-Vargas V, Hidalgo MH, Faustino-Fuster D, Oliveira C, Zanata AM.   +6 more
europepmc   +2 more sources

Biologia do jundiá Rhamdia quelen (Teleostei, Pimelodidae) Biology of Rhamdia quelen (Teleostei, Pemelodidae)

Ciência Rural, 2000
O jundiá, Rhamdia quelen, é encontrado desde o centro da Argentina até o sul do México, e seu cultivo está aumentando no sul do Brasil. Portanto, o objetivo desta revisão é apresentar os dados existentes até o momento sobre a biologia dessa espécie.
Levy de Carvalho Gomes, Jaqueline Ineu Golombieski, Adriana Regina Chippari Gomes, Bernardo Baldisserotto   +3 more
doaj   +2 more sources

Lethal temperatures for Rhamdia quelen larvae (Pimelodidae) Temperaturas letais de larvas de Rhamdia quelen (Pimelodidae) [PDF]

Ciência Rural, 2000
The lower and upper lethal temperatures (LT50) of R. quelen larvae were determined. The larvae were obtained from two spawning periods with hatching temperatures of 21 and 26ºC respectively.
Adriana Regina Chippari-Gomes, Levy Carvalho Gomes, Bernardo Baldisserotto   +2 more
doaj   +5 more sources