Results 71 to 80 of about 1,613 (195)

HEMOGLOBINAS EM SILURIFORMES DA AMAZÔNIA CENTRAL. III CARACTERIZAÇÃO IMUNOLÓGICA DE ALGUNS BAGRES E CASCUDOS. [PDF]

open access: yesActa Amazonica, 1983
Resumo Hemoglobinas de peixes Siluriformes pertencentes às famílias Doradidae; Auchenipteridae; Pimelodidae; Angeneiosidae; Loricariidae e Callichthyidae foram testadas contra anti-soros preparados para hemoglobina de Oxydoras niger (Doradidae: cuiú-cuiú)
Maria Isabel G. Portus   +3 more
doaj   +1 more source

Histamine in Brazilian Foods: A Comprehensive Review of Occurrence and Risk Assessment for Intoxication and Intolerance

open access: yesFood Science &Nutrition, Volume 13, Issue 11, November 2025.
Even though histamine plays an important role in human health, it has been associated with food intoxication and intolerance episodes. The most relevant, current state of knowledge regarding histamine's biochemical and health aspects is provided. Histamine levels are provided for 17 food groups, including 335 food types and 11,437 samples, allowing ...
Maria Beatriz A. Gloria   +6 more
wiley   +1 more source

Fig. 4. Pimelodus maculatus egg. a in Structural analysis of the Pimelodus maculatus (Lacépède, 1803) embryogenesis (Siluriformes: Pimelodidae) [PDF]

open access: yes, 2011
Fig. 4. Pimelodus maculatus egg. a - fertilized and non-hydratedPublished as part of Buzollo, Hellen, Veríssimo-Silveira, Rosicleire, Oliveira-Almeida, Isângela R., Alexandre, Juliana S., Okuda, Hélio T.
Buzollo, Hellen   +5 more
core   +1 more source

Local Environmental Variables Predict Fish Species Richness and Composition in Sand Beaches of a Neotropical River

open access: yesRiver Research and Applications, Volume 41, Issue 9, Page 1949-1958, November 2025.
ABSTRACT Local and regional species diversity is influenced by historical factors, resource availability, biotic interactions, the presence of resources, and adequate environmental conditions. We evaluated the effects of local environmental variables and spatial structure on fish species richness and composition along sandy beaches of a Neotropical ...
Ronaldo Souza da Silva   +8 more
wiley   +1 more source

Infection of the heart of Pimelodus ornatus (Teleostei, Pimelodidae), by Myxobolus sp. (Myxozoa, Myxobolidae) [PDF]

open access: yesRevista Brasileira de Parasitologia Veterinária, 2014
The phylum Myxozoa Grassé, 1970, consists of a heterogenous group of around 50 genera that are worldwide disseminated in a wide variety of aquatic media. In the present study, 43 specimens of Pimelodus ornatus were collected from an adjacent area to the Cachoeira do Arari municipality on Marajó Island, in the Brazilian state of Pará, in 2013 ...
Matos, Edilson   +5 more
openaire   +6 more sources

FIGURE 3 in A new species of Pimelodus LaCépède, 1803 (Siluriformes: Pimelodidae) from rio Itacaiunas, rio Tocantins basin, Brazil [PDF]

open access: yes, 2010
FIGURE 3. Partial map of South America showing the type locality of Pimelodus luciae. Black circle showing the type locality.Published as part of Rocha, Marcelo Salles & Ribeiro, Frank Raynner V., 2010, A new species of Pimelodus LaCépède, 1803 ...
Rocha, Marcelo Salles   +2 more
core   +1 more source

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

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  

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

open access: yesJournal 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   +6 more
wiley   +1 more source

Evolutionary Relationships Among the Amazonian Catfish Genus Hypophthalmus Cuvier, 1829 (Siluriformes, Pimelodidae) Suggest Diversification During Plio‐Pleistocene

open access: yesZoologica Scripta, Volume 54, Issue 6, Page 840-850, November 2025.
ABSTRACT The present study evaluated the phylogenetic relationships among the six valid species of catfish of the genus Hypophthalmus, estimated the divergence times among the different taxa and assessed the processes that influenced the evolution of the group.
Bianca A. Vale   +4 more
wiley   +1 more source

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