Results 51 to 60 of about 8,237 (246)

Molecular phylogeny reveals a new species of ghost electric knifefish Porotergus Ellis 1912 (Gymnotiformes: Apteronotidae), from the Amazon basin

Journal of Fish Biology, Volume 107, Issue 5, Page 1519-1531, November 2025.
Abstract A new species of ghost electric knifefish, Porotergus sambaibensis sp. nov., is described from the Javaés River, a tributary of the Araguaia River in Brazil. The new species was assigned to the genus Porotergus as the closest relative to Porotergus gimbeli through maximum likelihood reconstruction of a concatenated multilocus dataset ...
Marina B. Mendonça, Luiz A. W. Peixoto, Carine C. Chamon, A. Akama, C. David de Santana   +4 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

Bibliografía de los peces de agua dulce de Argentina y Uruguay : Suplemento 1982 [PDF]

, 1982
Fil: López, Hugo Luis. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Menni, Roberto Carlos. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Ringuelet, Raúl Adolfo. Instituto de Limnología Dr. Raúl A. Ringuelet (ILPLA); Facultad de
López, Hugo Luis, Menni, Roberto Carlos, Ringuelet, Raúl Adolfo   +2 more
core  

Evolutionary history of Middle American Rhamdia (Siluriformes: Heptapteridae) inferred from comparative mitogenomic data: Insights on historical biogeography and cave colonization in the group

Journal of Systematics and Evolution, Volume 63, Issue 6, Page 1501-1518, November 2025.
Investigating the systematics and biogeography of Neotropical catfishes of the genus Rhamdia refined phylogenetic hypotheses, including deep paraphyly of Rhamdia laticauda, supported northward dispersal catalyzed by emergence of the Panamanian Isthmus and imply that cave colonization is widespread, convergent, and recent, with established cave‐dwelling
Jairo Arroyave, Adán Fernando Mar‐Silva, Bruno F. Melo, Sonia Gabriela Hernández‐Ávila, Jesús M. López‐Vila, Gabriel S. C. Silva, Píndaro Díaz‐Jáimes   +6 more
wiley   +1 more source

Ação do tempo e da forma de suplementação alimentar com Artemia franciscana sobre a sobrevivência e o crescimento de larvas de jundiá Action of time and feeding suplementation form with Artemia franciscana on the survival and growth of the south american catfish larvae

Ciência Rural, 2000
O presente trabalho foi realizado com o objetivo de verificar o efeito da suplementação alimentar com Artemia franciscana no desempenho de larvas de jundiá (Rhamdia quelen). Os tratamentos foram: T1 - Suplementação com náuplios de Artemia durante 7 dias;
Everton Rodolfo Behr, Ana Paula Tronco, João Radünz Neto   +2 more
doaj   +1 more source

Relatório de estágio e efeito de diferentes dietas no desempenho larval de jundiá rhamdia quelen (quoy e gaimard, 1824) [PDF]

, 2013
TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Curso de Agronomia.O estágio foi realizado no Laboratório de Biologia e Cultivo de Peixes de Água Doce (LAPAD/AQI/CCA/UFSC), de março a junho de 2013.
Cano, Clara Luna de Bem Barreto
core  

Celioscopic liver biopsy in silver catfish (Rhamdia quelen) [PDF]

Pesquisa Veterinária Brasileira, 2015
Endosurgery has been used for assessment of fish celomatic cavity, as well as for obtaining biopsies for organic analysis. Such minimally invasive access may also be used for the analysis of environmental impact on biomarkers of pollution. In Brazil, studies and literature regarding the use of celioscopy in fish are sparse.
Feranti, João P.S., Guimarães, Luciana D., Oliveira, Marília T. de, Hartmann, Hellen F., Souza, Fernando W. de, Corrêa, Luís F.D., Silva, Marco A.M., Brun, Maurício V.   +7 more
openaire   +4 more sources

Utilização de fontes de energia não protéica por alevinos de jundiá (Rhamdia quelen) [PDF]

, 2007
TCC (graduação em Engenharia de Aquicultura) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, 2007O Estágio Supervisionado II foi realizado no Laboratório de Biologia e Cultivo de Peixes de Água Doce (LAPAD), pertencente ...
Motter, Graziella
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

Temperatures for fertilization and hatching and their influence on determining the sex ratio of the silver catfish Rhamdia quelen =Temperatura de fertilização e incubação e sua influência na determinação da proporção sexual do jundiá, Rhamdia quelen

Acta Scientiarum: Biological Sciences, 2010
This study aimed to evaluate the effects of water temperature duringfertilization and egg incubation in the determination of the sex ratio of fingerlings of silver catfish Rhamdia quelen.
Ricardo da Silva Longo, Alex Pires de Oliveira Nuñer   +1 more
doaj