A5082130521- Chromosomal and Genetic Variations
- Genetic diversity and population structure
- Genomics and Phylogenetic Studies
- Animal Genetics and Reproduction
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Genetic and Environmental Crop Studies
- Insect Resistance and Genetics
- Plant Virus Research Studies
- Orthoptera Research and Taxonomy
- Evolution and Paleontology Studies
- Education Pedagogy and Practices
- Science and Education Research
- Entomopathogenic Microorganisms in Pest Control
- Insect Utilization and Effects
- Insect behavior and control techniques
- Genetic Mapping and Diversity in Plants and Animals
- Nematode management and characterization studies
Universidade Federal do Rio Grande do Sul
2018-2024
Universidade Federal do Pampa
2016-2018
Birds are characterized by a low proportion of repetitive DNA in their genome when compared to other vertebrates. Among birds, species belonging Piciformes order, such as woodpeckers, show relatively higher amount these sequences. The aim this study was analyze the distribution different classes DNA—including microsatellites, telomere sequences and 18S rDNA—in karyotype three Picidae (Aves, Piciformes)—Colaptes melanochloros (2n = 84), Colaptes campestris 84) Melanerpes candidus 64)–by means...
An extensive karyotype variation is found among species belonging to the Columbidae family of birds (Columbiformes), both in diploid number and chromosomal morphology. Although clusters repetitive DNA sequences play an important role instability, therefore rearrangements, little known about their distribution amount avian genomes. The aim this study was analyze 11 distinct microsatellite sequences, as well 18S rDNA, nine different species, correlating with occurrence rearrangements. We 2n...
Contrary to predictions from classical hybrid sterility models of chromosomal speciation, some organisms display high rates karyotype variation. Ctenomys are the current mammals with greatest interspecific and intraspecific A large number species have been studied cytogenetically. The diploid numbers chromosomes range 2n = 10 70. Here, we analyzed evolution in using comparative phylogenetic methods. We found a strong signal chromosome number. This refutes megaevolution model, which proposes...
Transposable elements are abundant and dynamic part of the genome, influencing organisms in different ways through their presence or mobilization, by acting directly on pre- post-transcriptional regulatory regions. We compared evaluated presence, structure, copy number three hAT superfamily transposons (hobo, BuT2, mar) five strains Drosophila willistoni species. These D. geographical origins, sampled across north-south occurrence this used sequenced clones fluorescence in-situ...
Its wide karyotypic variation characterizes the genus Ctenomys, and in Brazil, is distributed country's southern, Midwest, northern regions. Recently, populations of Ctenomys have been found Midwest with two new lineages named C. sp. "xingu" "central."
Karyotypes in the worldwide subfamily Oecanthinae show variations diploid number, chromosome morphology, and sex-chromosome system. This study described set phylogenetic relationships of four Neotropical species, Oecanthus lineolatus, O. valensis, pallidus, pictus. We used classical cytogenetics Bayesian Inference for reconstruction, using mitochondrial genes COI, 12S rRNA, 16S rRNA; analyzed patterns changes numbers, ChromEvol. observed differences number among species two different...
Cytogenetic analyses of the Suboscines species are still scarce, and so far, there is no karyotype description any belonging to family Conopophagidae. Thus, aim this study describe analyze Conopophaga lineata by chromosome painting using Gallus gallus (GGA) probes identify location 18/28S rDNA cluster. Metaphases were obtained from fibroblast culture two individuals C. lineata. We observed a diploid number 2n=78. GGA showed that most ancestral syntenies conserved, except for fission GGA1...
O ensino de Genética é um desafio por tratar mecanismos hereditários complexos que envolvem diversos conceitos como alelos dominantes e recessivos, fenótipo genótipo, se fazendo necessária abstração para compreendê-los. Assim sendo, as dificuldades encontram-se não só na compreensão dos próprios conceitos, mas também os professores criação esquemas representações didáticas a fim ilustrar esta temática. Essa dificuldade tange tanto alunos foi observada educação básica no nível superior. Por...
O retroelemento Chicken Reapet 1 (CR1) é um elemento transponível (ET) típico da Classe aves. Na ordem Piciformes (Pica-paus), especialmente no genoma de Picoides pubescens, ocorreu uma expansão elementos CR1 acarretando em fração bem mais expressiva TEs, aproximadamente 22% do seu genoma. Além disso, outras espécies pica-paus foram relacionado o tamanho grande dos primeiros pares macrocromossomos, incluindo cromossomo sexual Z, com maior acúmulo sequências repetitivas. Por estas razões,...
A ordem Passeriformes, subdividida em duas subordens Oscines e Suboscines, é a mais diversa com o maior número de espécies aves. Além disso, analisadas por citogenética clássica. Quanto à molecular, existe até momento 16 analisadas, apenas uma, Elaenia spectabilis, pertencente subordem Suboscines. espécie Conopophaga lineata, popularmente conhecida como chupa-dente, pertence família Conopophagidae (Passeriformes, Suboscines) encontrada na Mata Atlântica, no Brasil se distribui do Ceará ao...
The Neotropical underground rodents of the genus Ctenomys (Rodentia: Ctenomyidae) comprise about 65 species, which harbor most significant chromosomal variation among mammals (2n = 10 to 2n 70). Among them, C. minutus stands out with 45 different cytotypes already identified, which, seven parental ones, named A G, are parapatrically distributed in coastal plains Southern Brazil. Looking for possible causes that led such extensive karyotype diversification, we performed mapping repetitive...