Results 71 to 80 of about 1,598 (193)

Effects of dietary levels of protein on nitrogenous metabolism of Rhamdia quelen (Teleostei: Pimelodidae) [PDF]

open access: yesComparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2006
This manuscript reports changes in key enzymes and metabolites related to protein metabolism and nitrogen excretion in the liver of juveniles jundiá (Rhamdia quelen) fed on isocaloric diets containing 20%, 27%, 34% and 41% of crude protein. The hepatic activity of alanine aminotransferase (ALAT), aspartate aminotransferase (ASAT), glutamate ...
José Fernando, Bibiano Melo   +4 more
openaire   +2 more sources

CYTOGENETIC STUDIES ON FISHES OF THE FAMILY PIMELODIDAE (SILUROIDEI)

open access: yes, 1993
Four fish species of the family Pimelodidae were analyzed. Bergiaria westermani and two different Pimelodus species have the same diploid chromosome number (2n - 56).
Dias, A. L., Foresti, F.
core   +2 more sources

Fish distribution across altitudinal gradients in the Upper Paraguay River Basin: Implications for conservation in the Pantanal region

open access: yesConservation Science and Practice, Volume 7, Issue 7, July 2025.
This paper approaches the patterns in fish distribution across the altitudinal gradient in the Upper Paraguay River basin, from uplands to the floodplain. We compiled more than 75,000 available fish records and registered 342 fish species and your distribution along altitudinal gradient. Floodplain portion have higher species diversity than headwaters,
Adriana Maria Espinoza Fernando   +11 more
wiley   +1 more source

Karyotype variability in neotropical catfishes of the family Pimelodidae (Teleostei: Siluriformes) [PDF]

open access: yes, 2020
Karyotypic data are presented for four species of fish belonging to the Pimelodidae family. These species show a conserved diploid number, 2n = 56 chromosomes, with different karyotypic formulae.
Artoni   +7 more
core  

Comparative anatomy of Weber's apparatus of the calophysus group (siluriformes: pimelodidae)

open access: yes, 2023
Currently, the Pimelodidae family includes the Calophysus group, composed of the genera: Aguarunichthys Stewart, 1986; Calophysus Müller & Troschel, 1843; Cheirocerus Eigenmann, 1917; Luciopimelodus Eigenmann & Eigenmann, 1888; Megalonema Eigenmann, 1912;
Silva, Micael Cavalli de Alencar e
core  

Megalocytivirus: A Review of Epidemiology, Pathogenicity, Immune Evasion, and Prevention Strategies

open access: yesReviews in Aquaculture, Volume 17, Issue 3, June 2025.
ABSTRACT Megalocytivirus, a large double‐stranded DNA virus belonging to the Iridoviridae family, has infected over 100 species of fish, leading to significant economic losses in the aquaculture, food, and ornamental fish industries. These viruses exhibit icosahedral symmetry and have diameters ranging from 120 to 200 nm.
Changjun Guo   +4 more
wiley   +1 more source

Isolation and characterization of microsatellite loci in Pseudoplatystoma corruscans (Siluriformes : Pimelodidae) and cross-species amplification

open access: yes, 2005
A total of five polymorphic microsatellites loci from Pseudoplatystoma corruscans were isolated and characterized. A population survey involving 43 specimens resolved a large number of alleles (range seven to eight among loci) and high observed ...
Pereira, LHG   +3 more
core   +1 more source

Tropical Rainfall and eDNA Washout Impact Estimations of Amazonian Biodiversity Patterns From Environmental Samples

open access: yesEnvironmental DNA, Volume 7, Issue 3, May–June 2025.
We used eDNA to assess seasonal biodiversity patterns in a tropical river in French Guiana. Our results show that rainfall increases the detection of terrestrial species through eDNA washout and leads to species homogenization via increased eDNA transport.
Céline Condachou   +5 more
wiley   +1 more source

Clave artificial de las familias de peces del río Magdalena

open access: yesCaldasia, 1942
Patamotrygonidae / Ageneiosidae / Pimelodidae / Auchenipteridae / Bunocephalidae / Cetopsidae /  Pygidiidae / Astroblepidae / Doradidae / Loricariidae / Callichthyidae / Characidae / Erythrinidae / Cyprinodotitidae / Poeciliidae / Sciaenidae / Cichlidae /
Miles Cecil
doaj  

Influência de diferentes níveis de luminosidade sobre o desempenho de larvas de Jundiá (Rhamdia quelen) (Quoy e Gaimard, 1824) (Pisces: pimelodidae)

open access: yesActa Scientiarum: Biological Sciences, 2008
O presente trabalho foi realizado com o objetivo de verificar o efeito de 3 níveis de luminosidade (T1=1,2 lux; T2=17 lux e T3=20 lux) sobre o crescimento e a sobrevivência de larvas de jundiá (Rhamdia quelen), durante as 3 primeiras semanas de cultivo ...
Everton Rodolfo Behr   +3 more
doaj   +1 more source

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