Results 11 to 20 of about 878 (168)

Cytogenetic Markers Reinforce the Redescription of the Armored Pleco Hypostomus spiniger (Loricariidae - Hypostominae), an Endemic Species in the Uruguay River Basin and Patos Lagoon System [PDF]

Brazilian Archives of Biology and Technology, 2023
Among the Neotropical fish fauna, suckermouth armored catfishes (Hypostomus - Loricariidae) stands out as one of the most difficult groups to diagnose morphologically.
Fabio Hiroshi Takagui, Marceléia Rubert, Jaqueline Fernanda Dionisio, Lucas Baumgärtner, Yamila Paula Cardoso, Fernando Camargo Jerep, Lucia Giuliano-Caetano   +6 more
doaj   +4 more sources

Comparative cytogenetics of two species of genus Scobinancistrus (Siluriformes, Loricariidae, Ancistrini) from the Xingu River, Brazil [PDF]

Comparative Cytogenetics, 2013
The family Loricariidae encompasses approximately 800 species distributed in six subfamilies. The subfamily Hypostominae consists of five tribes; of them, the tribe Ancistrini is relatively diverse, but it is not well known from the cytogenetic point of ...
Adauto Cardoso, Karline Sales, Cleusa Nagamachi, Julio Pieczarka, Renata Noronha   +4 more
doaj   +6 more sources

Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil. [PDF]

J Fish Biol
Abstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Kampfert LEP, Maicrovicz JC, Blanco DR, Lange D, Pavanelli CS, Brandão H.   +5 more
europepmc   +2 more sources

Cytogenetic analysis of two locariid species (Teleostei, Siluriformes) from Iguatemi River (Parana River drainage) in Brazil [PDF]

Comparative Cytogenetics, 2015
Fishes of the Loricariidae family, known as “cascudos”, constitute an endemic group in Neotropical freshwaters. In this study, were cytogenetically examined two species of Loricariidae (Pterygoplichthys anisitsi Eigenmann & Kennedy, 1903 and ...
Carlos Alexandre Fernandes, Diandra Soares Alves, Zaira da Rosa Guterres, Isabel Cristina Martins-Santos   +3 more
doaj   +2 more sources

Physical mapping of the 5S and 18S rDNA in ten species of Hypostomus Lacépède 1803 (Siluriformes: Loricariidae): evolutionary tendencies in the genus. [PDF]

ScientificWorldJournal, 2014
Hypostomus is a diverse group with unclear aspects regarding its biology, including the mechanisms that led to chromosome diversification within the group. Fluorescence in situ hybridization (FISH) with 5S and 18S rDNA probes was performed on ten Hypostomini species. Hypostomus faveolus, H. cochliodon, H. albopunctatus, H. aff. paulinus, and H. topavae
Bueno V, Venere PC, Thums Konerat J, Zawadzki CH, Vicari MR, Margarido VP.   +5 more
europepmc   +2 more sources

Karyotype description of possible new species of the Hypostomus ancistroides complex (Teleostei: Loricariidae) and other Hypostominae - doi: 10.4025/actascibiolsci.v34i2.9318

Acta Scientiarum: Biological Sciences, 2011
Cytogenetic analyses were performed in four species of the Hypostominae subfamily, three from Hypostomus (Hypostomini) genus and Rhinelepis aspera (Rhinelepini). Three populations of Hypostomus ancistroides were analyzed, which had 2n=68 chromosomes, but
Kátia Sayuri Endo, Emanuel Ricardo Monteiro Martinez, Claudio Henrique Zawadzki, Luiz Ricardo de Souza Paiva, Horácio Ferreira Júlio Júnior   +4 more
doaj   +2 more sources

Two new species of the ornamental loricariid genus Baryancistrus (Siluriformes: Hypostominae) from rio Trombetas basin, Pará, Brazil [PDF]

Neotropical Ichthyology
Two new species of Baryancistrus are described from the rio Trombetas basin. These new species were collected in the late 1980’s and were analyzed morphologically and compared to the eight currently assigned species of Baryancistrus. Both new species are
Renildo Ribeiro de Oliveira, Lúcia H. Rapp Py-Daniel   +1 more
doaj   +2 more sources

Two new species of spotted Hypancistrus from the Rio Negro drainage (Loricariidae, Hypostominae). [PDF]

Zookeys, 2016
Two new species, Hypancistrus phantasma and Hypancistrus margaritatus, are described based on material from the Rio Negro drainage. Both species are distinguished from congeners by unique color patterns.
Tan M, Armbruster JW.
europepmc   +2 more sources

A new dark-saddled species of Hypostomus (Siluriformes: Loricariidae) from the upper rio Paraguay basin [PDF]

Neotropical Ichthyology, 2010
A new Hypostomus species is described from the rio Cuiabá, upper rio Paraguay basin, Mato Grosso State, Brazil. The new species is distinguished from all other Hypostomus species, with exception of young specimens of H.
Cláudio Henrique Zawadzki, Claude Weber, Carla Simone Pavanelli   +2 more
doaj   +2 more sources

Phylogenetic relationships of the suckermouth armoured catfishes (Loricariidae) with emphasis on the Hypostominae and the Ancistrinae

Zoological Journal of the Linnean Society, 2004
A phylogenetic analysis of nearly all genera of the Hypostominae and the Ancistrinae is provided based on osteology, external anatomy, and digestive tract anatomy. The results suggest that the Hypostominae is a paraphyletic assemblage.
Jonathan W Armbruster
exaly   +2 more sources