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Molecular Phylogeny and Biogeographic History of the Armored Neotropical Catfish Subfamilies Hypoptopomatinae, Neoplecostominae and Otothyrinae (Siluriformes: Loricariidae)
A strong influence of river capture is infer in the accumulation of modern clade species-richness values, the formation of the modern basin-wide species assemblages, and the presence of many low-diversity, early-branching lineages restricted to the Atlantic Coastal Drainages.
Trends in chromosome evolution in the genus Hypostomus Lacépède, 1803 (Osteichthyes, Loricariidae): a new perspective about the correlation between diploid number and chromosomes types
The authors' analysis shows no correlation between chromosome numbers and percentages of subtelocentric and acrocentric chromosomes for most of the species, since there is considerable variation between these percentages even between species with the same diploid number, indicating that the proportion of chromosome types is not always associated to diploids numbers.
Karyotype description of two species of Hypostomus (Siluriformes, Loricariidae) of the Planalto da Bodoquena, Brazil.
The results reveal the existence of a genetic mosaic due to the occurrence of one or two extrachromosomes in this species, and are the first cytogenetic data on Hypostomus from the Paraguay River basin.
A new dark-saddled species of Hypostomus (Siluriformes: Loricariidae) from the upper rio Paraguay basin
A new Hypostomus species is described from the rio Cuiaba, upper rio Paraguay basin, Mato Grosso State, Brazil, to highlight that the region still functions as a potential source of new species.
Transcontinental dispersal, ecological opportunity and origins of an adaptive radiation in the Neotropical catfish genus Hypostomus (Siluriformes: Loricariidae)
The geographical remoteness of the Paraná River basin, its recent history of marine incursion, and its continuing exclusion of many species that are widespread in other tropical South American rivers suggest that ecological opportunity played an important role in facilitating the observed accelerations in diversification.
Cytogenetic characterization of Hypostomus nigromaculatus (Siluriformes: Loricariidae)
The differences observed between the sample from rio Mogi-Guacu and the ones from tributaries of rio Tibagi allow us to suggest that these samples are presently isolated, and it is necessary to ascertain whether such isolation refers to distinct populations or characterizes true different species.
Physical Mapping of the 5S and 18S rDNA in Ten Species of Hypostomus Lacépède 1803 (Siluriformes: Loricariidae): Evolutionary Tendencies in the Genus
FISH with 5S and 18S rDNA probes was performed on ten Hypostomini species, with results discussed based on existent phylogenies for the genus, with comments on possible dispersion mechanisms to justify the variability of the rDNA sites in HypOSTomus.
The occurrence of Austrodiplostomum compactum (Lutz, 1928) (Digenea: Diplostomidae) metacercariae in the eyes of loricariid fish (Siluriformes: Osteichthyes: Loricariidae) from Brazil.
The aim of this study was to report the occurrence of Austrodiplostomum compactum metacercariae in the eyes of 98 specimens of loricariid fish (Hypostomus ancistroides, H. hermanni, H. iheringii, H.
Effects of local and regional factors on the fish assemblage structure in Meridional Amazonian streams
The aim of this study was to evaluate the effects of local, regional and temporal factors structuring fish assemblages in Meridional Amazonian streams during the months of May (rainy season) and