Results 61 to 70 of about 6,846 (198)

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  

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  

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

Organização trófica da assembleia de peixes de uma lagoa costeira subtropical, Santa Catarina, Brasil [PDF]

, 2013
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-graduação em Ecologia, Florianópolis, 2013O presente estudo teve como objetivo investigar a organização trófica da assembleia de peixes da ...
Sticca, Sarah Carvalho
core  

Influência da luminosidade no crescimento de Jundiá (Rhamdia quelen) / Influence of luminosity on the growth of Jundiá (Rhamdia quelen)

Brazilian Journal of Development, 2022
Esta pesquisa foi realizada com objetivo de avaliar o efeito da luminosidade sobre o crescimento de juvenis de jundiá. Foram utilizados 225 peixes (70,53±3,68g), distribuídos em 15 caixas de 500 L, em um delineamento inteiramente casualizado, alimentados três vezes ao dia com ração comercial contendo 36% PB e granulometria 1,5 mm, durante 45 dias.
Jânderson Rocha Garcez, Leonardo Aluisio Baumgartner, Sara Ugulino Cardoso, Micáila Bolzon Gonzalez, Monica Regina de Matos, Weverson Ailton da Silva, Robie Allan Bombardelli   +6 more
openaire   +1 more source

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

A new cave species of Rhamdia (Siluriformes: Heptapteridae) from Serra do Ramalho, northeastern Brazil, with notes on ecology and behavior

Neotropical Ichthyology
Rhamdia enfurnada, a new troglobitic (exclusively subterranean) catfish, is described from the Gruna do Enfurnado, Serra do Ramalho, southwestern Bahia State, middle São Francisco River basin.
Maria Elina Bichuette, Eleonora Trajano
doaj   +1 more source

Urophysial and pituitary extracts for spawning induction in teleosts Extratos urofisário e hipofisário para indução da desova em teleósteos

Ciência Rural, 2000
Several studies have suggested that the caudal neurosecretory system could act on fish reproduction. The aim of this study was to compare the effect of urophysial extract (UE) and carp pituitary homogenate (CPH) on the induction of spawning in Hoplias ...
Everton Rodolfo Behr, Bernardo Baldisserotto, Walter Garcia Parra, Deodoro Atlante Brandão, Zolst Herke   +4 more
doaj   +1 more source

Anestesia e toxicidade aguda do eugenol aplicado em juvenis de jundiá, Rhamdia quelen [PDF]

, 2014
TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Agrárias. Curso de Engenharia de Aquicultura.Durante o período de estágio foram realizados três experimentos envolvendo o agente anestésico eugenol, que foram desenvolvidos no ...
Pallamin, Rafael Tanganelli
core  

A contribution to the checklist of fishes of San Luis province, Argentina [PDF]

, 2015
San Luis province presents arheic and endorheic basins that are poorly understood in terms of their ichthyological composition. The samples taken recently from the main basins of this province have yielded data of undisputed biogeographic value for the ...
Bogan, Sergio, Cabrera, María Belén, Cardoso, Yamila Paula, Jauregui, Adrian, Lizarralde, Marta Susana, Meluso, Juan   +5 more
core   +4 more sources