Search Results - "Bertollo, L.A.C."

Repetitive DNAs and differentiation of sex chromosomes in neotropical fishes by Cioffi, M B, Camacho, J P M, Bertollo, L A C

“…The processes working on sex chromosome differentiation are still not completely understood. However, the accumulation of repetitive DNA sequences has been…”
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Colocalization of repetitive DNAs and silencing of major rRNA genes. A case report of the fish Astyanax janeiroensis by Vicari, M R, Artoni, R F, Moreira-Filho, O, Bertollo, L A C

“…The heterochromatin composition and loca- tion in the genome of the fish Astyanax janeiroensis was investigated using Chromomycin A(3) and DAPI fluorochromes…”
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Chromosome polymorphism in Astyanax fasciatus (Teleostei, Characidae). 1. Karyotype analysis, Ag-NORs and mapping of the 18S and 5S ribosomal genes in sympatric karyotypes and their possible hybrid forms by Pazza, R, Kavalco, K F, Bertollo, L A C

“…Astyanax fasciatus may be characterized as a chromosomally diversified 'species' presenting distinct cytotypes, each with its specific variants. The sympatric…”
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Cytogenetic characterization and description of an XX/XY1Y2 sex chromosome system in catfish Harttia carvalhoi (Siluriformes, Loricariidae) by Centofante, L, Bertollo, L A C, Moreira-Filho, O

“…Karyotypic and cytogenetic characteristics of catfish Harttia carvalhoi (Paraíba do Sul River basin, São Paulo State, Brazil) were investigated using…”
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Chromosome polymorphism in Astyanax fasciatus (Teleostei, Characidae). 2--Chromosomal location of a satellite DNA by Pazza, R, Frehner Kavalco, K, Bertollo, L A C

“…Studies about composition of repetitive sequences and their chromosomal location have been helpful to evolutionary studies in many distinct organisms. In order…”
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ZZ/ZW sex chromosome system in an undescribed species of the genus Apareiodon (Characiformes, Parodontidae) by Vicari, M R, Moreira-Filho, O, Artoni, R F, Bertollo, L A C

“…The chromosomes of an undescribed species of the genus Apareiodon (Characiformes, Parodontidae) from the Verde River, a headwater affluent of the Tibagi River…”
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Gene mapping of 5S rDNA sites in eight fish species from the Paraíba do Sul river basin, Brazil by Kavalco, K F, Pazza, R, Bertollo, L A C, Moreira-Filho, O

“…The use of improved cytogenetic techniques such as fluorescent in situ hybridization (FISH) has offered important methodologies for cytotaxonomic and…”
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Karyoevolutionary aspects of Atlantic hogfishes (Labridae–Bodianinae), with evidence of an atypical decondensed argentophilic heterochromatin by Molina, W.F., Neto, C.C. Motta, Sena, D.C.S., Cioffi, M.B., Bertollo, L.A.C.

“…Fish from the family Labridae elicit considerable ecological interest, especially due to their complex interactions with the reef environment. Different…”
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B chromosomes in the fish Astyanax scabripinnis (Characidae, Tetragonopterinae): an overview in natural populations by Moreira-Filho, O, Galetti, Jr, P M, Bertollo, L A C

“…Astyanax scabripinnis, a small neotropical freshwater fish, is a headwater species living in small tributaries of many Brazilian rivers, where they form…”
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Heterochromatin polymorphism associated with 18S rDNA: a differential pathway among Hoplias malabaricus fish populations by Vicari, M R, Artoni, R F, Bertollo, L A C

“…The distribution of constitutive heterochromatin has showed a relevant association with karyotypic evolution in several animal groups. In the present paper, a…”
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Heteromorphic sex chromosome system with an exceptionally large Y chromosome in a catfish Steindachneridion sp. (Pimelodidae) by Swarça, A C, Fenocchio, A S, Cestari, M M, Bertollo, L A C, Dias, A L

“…The chromosomes and banding patterns of Steindachneridion sp., a large catfish (Pimelodidae), endemic to the Iguaçu River, Brazil, were analyzed using…”
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Research Article The unusual high number of chromosomes signals rare multiple fission events in the Polynemidae (Carangaria, Teleostei) by Molina, W.F., Cioffi, M.B., Soares, R.X., Borges, A.T., Costa, G.W.W.F., Bertollo, L.A.C.

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Distribution of a supernumerary chromosome system and aspects of karyotypic evolution in the genus Prochilodus (Pisces, Prochilodontidae) by Pauls, E., Bertollo, L.A.C.

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The chromosomal distribution of microsatellite repeats in the genome of the wolf fish Hoplias malabaricus, focusing on the sex chromosomes by Cioffi, M B, Kejnovsky, E, Bertollo, L A C

“…Distribution of 12 mono-, di- and tri-nucleotide microsatellites on the chromosomes of 2 karyomorphs with 2 distinct sex chromosome systems (a simple XX/XY -…”
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Comparative chromosomal mapping of microsatellites in Leporinus species (Characiformes, Anostomidae): unequal accumulation on the W chromosomes by Poltronieri, J, Marquioni, V, Bertollo, L A C, Kejnovsky, E, Molina, W F, Liehr, T, Cioffi, M B

“…Approximately 90 species in the genus Leporinus (Characiformes, Anostomidae) are known, and most of them do not present differentiated sex chromosomes…”
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Chromosomal variability among allopatric populations of Erythrinidae fish Hoplias malabaricus: mapping of three classes of repetitive DNAs by Cioffi, M B, Martins, C, Centofante, L, Jacobina, U, Bertollo, L A C

“…Karyotype and chromosomal characteristics from 3 allopatric populations of Hoplias malabaricus, cytogenetically the most studied Erythrinidae taxon, were…”
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Independent sex chromosome evolution in lower vertebrates: a molecular cytogenetic overview in the Erythrinidae fish family by Cioffi, M B, Liehr, T, Trifonov, V, Molina, W F, Bertollo, L A C

“…The Erythrinidae fish family is an excellent model for analyzing the evolution of sex chromosomes. Different stages of sex chromosome differentiation from…”
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Karyotype divergence and spreading of 5S rDNA sequences between genomes of two species: darter and emerald gobies ( Ctenogobius , Gobiidae) by Lima-Filho, P A, Bertollo, L A C, Cioffi, M B, Costa, G W W F, Molina, W F

“…Karyotype analyses of the cryptobenthic marine species Ctenogobius boleosoma and C. smaragdus were performed by means of classical and molecular cytogenetics,…”
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Transposable elements in fish chromosomes: a study in the marine cobia species by Costa, G W W F, Cioffi, M B, Bertollo, L A C, Molina, W F

“…Rachycentron canadum, a unique representative of the Rachycentridae family, has been the subject of considerable biotechnological interest due to its potential…”
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Chromosomal distribution and evolution of repetitive DNAs in fish by Cioffi, M B, Bertollo, L A C

“…Fish exhibit the greatest diversity of all vertebrates, making this group extremely attractive for the study of a number of evolutionary questions. Fish…”
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