M
Marcelo Ricardo Vicari
Researcher at Ponta Grossa State University
Publications - 146
Citations - 2903
Marcelo Ricardo Vicari is an academic researcher from Ponta Grossa State University. The author has contributed to research in topics: Karyotype & Chromosome. The author has an hindex of 28, co-authored 133 publications receiving 2482 citations. Previous affiliations of Marcelo Ricardo Vicari include Federal University of São Carlos & Federal University of Paraná.
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Journal ArticleDOI
Origin and Evolution of B Chromosomes in the Cichlid Fish Astatotilapia latifasciata Based on Integrated Genomic Analyses
Guilherme Targino Valente,Matthew A. Conte,B. E. A. Fantinatti,Diogo Cavalcanti Cabral-de-Mello,Robson Francisco Carvalho,Marcelo Ricardo Vicari,Thomas D. Kocher,Cesar Martins +7 more
TL;DR: A model in which the B chromosome originated early in the evolutionary history of Lake Victoria cichlid fish from a small fragment of one autosome is proposed, and intact B chromosome genes involved with microtubule organization, kinetochore structure, recombination and progression through the cell cycle may play a role in driving the transmission of the B chromosomes.
Journal ArticleDOI
Satellite DNA and chromosomes in Neotropical fishes: methods, applications and perspectives
Marcelo Ricardo Vicari,Viviane Nogaroto,Rafael Bueno Noleto,Marta Margarete Cestari,Marcelo de Bello Cioffi,Mara Cristina de Almeida,Orlando Moreira-Filho,L. A. C. Bertollo,Roberto Ferreira Artoni +8 more
TL;DR: The possible elimination of satellite DNA units could explain the genome compaction that occurs among some species of Neotropical Tetraodontiformes, and amplifications of satellite DNAs have demonstrated that these sequences are related to the differentiation of heteromorphic sex chromosomes.
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Colocalization of repetitive DNAs and silencing of major rRNA genes. A case report of the fish Astyanax janeiroensis.
TL;DR: Several chromosomal and karyotype markers are similar between A. janeiroensis and A. scabripinnis, indicating a close relationship between these species.
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Astyanax aff. fasciatus Cuvier, 1819 (Teleostei; Characidae): evidences of a species complex in the upper rio Tibagi basin (Paraná, Brazil)
Roberto Ferreira Artoni,Oscar Akio Shibatta,Maria Claudia Gross,Carlos Henrique Schneider,Mara Cristina de Almeida,Marcelo Ricardo Vicari,Luiz Antonio Carlos Bertollo +6 more
TL;DR: The morphometric analyses of canonical variates indicate a consistent isolation of the Furna 2 sample, while the other samples seem to be superimposed, indicating a possible gene flow or even a recent isolation event in the studied region.
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Comparative cytogenetics among species of the Astyanax scabripinnis complex: evolutionary and biogeographical inferences
Marcelo Ricardo Vicari,Rafael Bueno Noleto,Roberto Ferreira Artoni,Orlando Moreira-Filho,Luiz Antonio Carlos Bertollo +4 more
TL;DR: The hypothesis is that the karyotypic form A corresponds to the species A. paranae and forms B and C correspond to other species of the A. scabripinnis complex.