Results 141 to 150 of about 2,788 (258)

Caracterização morfológica da epiderme do bagre neotropical Pimelodella cf. vittata (Osteichthyes: Ostariophysi: Siluriformes: Heptapteridae) com ênfase nas células claviformes. [PDF]

, 2012
The epidermis of Ostariophyi fish is composed by three basic cell types: epidermal, mucus and club cells. These latter cells are associated with the production of a secretion with distinct function and chemical composition.
Damasceno, Eduardo Medeiros, DAMASCENO, E. M.   +1 more
core  

Redescription of Leporinus jamesi (Characiformes: Anostomidae), a poorly known species of Leporinus from the lowlands of the central Amazon, Brazil

Neotropical Ichthyology
The poorly known Leporinus jamesiis redescribed. The species was originally described based on a single specimen collected in the rio Solimões at Manacapuru, in the central Amazon, Brazil.
Júlio C. Garavello, Heraldo A. Britski, José L. O. Birindelli   +2 more
doaj   +1 more source

Correction to: Macroevolutionary consequences of karyotypic changes in the neotropical Serrasalmidae fishes (Ostariophysi, Characiformes) diversification

Genetica, 2023
U. P. Jacobina, Alany Itala Pontes, L. Costa, Gustavo Souza   +3 more
semanticscholar   +1 more source

Harttia absaberi, a new species of loricariid catfish (Siluriformes: Loricariidae: Loricariinae) from the upper rio Paraná basin, Brazil

Neotropical Ichthyology
A new species of Harttia, tribe Harttiini, is described from tributaries of upper portions of rio Paraná drainage. The new species, the smallest known species of the genus, attaining up to 74.0 mm of standard length, can be distinguished from its ...
Osvaldo Takeshi Oyakawa, Ilana Fichberg, Francisco Langeani   +2 more
doaj   +1 more source

Revision of genus Steindachneridion (Siluriformes: Pimelodidae)

Neotropical Ichthyology
After several years collecting in the type-localities and studying representative samples of genus Steindachneridion Eigenmann & Eigenmann, 1919 from Brazilian and foreign museums, a taxonomic revision of the Recent species of the genus is presented ...
Julio Cesar Garavello
doaj   +1 more source

A new species of Farlowella (Siluriformes: Loricariidae) of the F. nattereri species-group from the rio Xingu basin, Mato Grosso, Brazil, with comments on Farlowella jauruensis , a poorly-known species from the upper rio Paraguai basin

Neotropical Ichthyology
A new species of Farlowella is described from eighteen specimens collected in the upper rio Xingu basin, Mato Grosso State, Brazil. The new species is a member of the Farlowella nattereri species-group and can be distinguished from other members of the ...
Gustavo A. Ballen, Murilo N. L. Pastana, Luiz A. W. Peixoto   +2 more
doaj   +1 more source

A new species of the catfish genus Centromochlus (Siluriformes: Auchenipteridae: Centromochlinae) from the upper rio Paraná basin, Brazil

Neotropical Ichthyology
Centromochlus comprises twelve species, distributed in the main inland watersheds of South America, including the Orinoco, Essequibo, coastal rivers of Suriname, Amazon, upper Paraná and São Francisco basins.
Luisa Maria Sarmento-Soares, José Luís Olivan Birindelli   +1 more
doaj   +1 more source

Isolation and Characterization of the Arapaima gigas Growth Hormone (ag-GH) cDNA and Three-Dimensional Modeling of This Hormone in Comparison with the Human Hormone (hGH). [PDF]

Biomolecules, 2023
Lima ER, Freire RP, Suzuki MF, Oliveira JE, Yosidaki VL, Peroni CN, Sevilhano T, Zorzeto M, Torati LS, Soares CRJ, Lima IDM, Kronenberger T, Maltarollo VG, Bartolini P.   +13 more
europepmc   +1 more source

Sistemática de Piabina Reinhardt, 1867 (Ostariophysi: Characidae)

, 2016
A sistemática de Piabina Reinhardt, 1867 tem sido questionada recentemente. Espécies novas e possíveis sinônimos (e.g., Astyanax paranahybae) foram sugeridos para o gênero e a espécie-tipo, Piabina argentea, foi considerada recentemente um complexo de espécies.
openaire   +2 more sources

Taxonomy, phylogeny and biogeography of catfishes (Ostariophysi, Siluroidei): an overview

Aquatic Living Resources, 1996
An overview is given of our present knowledge on taxonomy, phylogeny and biogeography of catfishes or Siluroidei, one of the worlds economically important groups of fresh and brackish water fishes. In an introductory chapter, the taxonomic position of catfishes in the ichthyological classification is discussed; their external morphology is briefly ...
openaire   +1 more source