8 documents found, page 1 of 1
Intriguing evidence of translocations in Discus fish (Symphysodon, Cichlidae) a...
Gross, Maria Claudia; Feldberg, Eliana; Cella, Doralice Maria; Schneider, Marielle Cristina; Schneider, Carlos Henrique; Porto, Jorge Ivan RebeloAs part of a program to understand the genetics of Amazonian ornamental fish, classical cytogenetics was used to analyze Symphysodon aequifasciatus, S. discus and S. haraldi, popular and expensive aquarium fishes that are endemic to the Amazon basin. Mitotic analyses in Symphysodon have shown some odd patterns compared with other Neotropical cichlids. We have confirmed that Symphysodon species are characterized...
Intense genomic reorganization in the genus Oecomys (Rodentia, Sigmodontinae): ...
Gomes Júnior, Renan Gabriel; Schneider, Carlos Henrique; Lira, Thatianna de; Carvalho, Natália Dayane Moura; Feldberg, ElianaOecomys Thomas, 1906 is one of the most diverse and widely distributed genera within the tribe Oryzomyini. At least sixteen species in this genus have been described to date, but it is believed this genus contains undescribed species. Morphological, molecular and cytogenetic study has revealed an uncertain taxonomic status for several Oecomys species, suggesting the presence of a complex of species. The present...
Repetitive sequences: The hidden diversity of heterochromatin in prochilodontid...
Terêncio, Maria Leandra; Schneider, Carlos Henrique; Gross, Maria Claudia; Carmo, Edson Júnior do; Nogaroto, Viviane; Almeida, Mara Cristina deThe structure and organization of repetitive elements in fish genomes are still relatively poorly understood, although most of these elements are believed to be located in heterochromatic regions. Repetitive elements are considered essential in evolutionary processes as hotspots for mutations and chromosomal rearrangements, among other functions - thus providing new genomic alternatives and regulatory sites for...
Evolutionary dynamics of retrotransposable elements Rex1, Rex3 and Rex6 in neot...
Schneider, Carlos Henrique; Gross, Maria Claudia; Terêncio, Maria Leandra; Carmo, Edson Júnior do; Martins, Cesar Henrique Rossinoli; Feldberg, ElianaBackground: Transposable elements (TEs) have the potential to produce broad changes in the genomes of their hosts, acting as a type of evolutionary toolbox and generating a collection of new regulatory and coding sequences. Several TE classes have been studied in Neotropical cichlids; however, the information gained from these studies is restricted to the physical chromosome mapping, whereas the genetic diversi...
Chromosomal distribution of microsatellite repeats in Amazon cichlids genome (P...
Schneider, Carlos Henrique; Gross, Maria Claudia; Terêncio, Maria Leandra; Tavares, Édika Sabrina Girão Mitozo de; Martins, Cesar Henrique RossinoliFish of the family Cichlidae are recognized as an excellent model for evolutionary studies because of their morphological and behavioral adaptations to a wide diversity of explored ecological niches. In addition, the family has a dynamic genome with variable structure, composition and karyotype organization. Microsatellites represent the most dynamic genomic component and a better understanding of their organiz...
Comparative cytogenetics of Carnegiella marthae and Carnegiella strigata (Chara...
Terêncio, Maria Leandra; Schneider, Carlos Henrique; Gross, Maria Claudia; Silva, Adailton Moreira da; Feldberg, Eliana; Porto, Jorge Ivan RebeloComparative cytogenetic analyses of hatchetfishes Camegiella marthae and Camegiella strigata (Gasteropelecidae) from the Rio Negro basin were performed using conventional Giemsa staining, silver (Ag)-staining and C-banding. The diploid chromosome numbers of both species equaled 2n = 50 but their karyotypes were distinct. We found evidence for sex chromosomes in C. marthae since karyotype of males presented 20 M...
Evolutionary dynamics of retrotransposable elements Rex1, Rex3 and Rex6 in neot...
Schneider, Carlos Henrique; Gross, Maria Claudia; Terencio, Maria Leandra; Do Carmo, Edson Junior; Martins, Cesar [UNESP]; Feldberg, ElianaSubmitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:29:58Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:48:40Z : No. of bitstreams: 1 2-s2.0-84880092741.pdf: 1567772 bytes, checksum: bbb5c02f2b9ff5c708d5fc3a037717f5 (MD5); Made available in DSpace on 2014-05-27T11:29:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-07-18; Background: Transposable elements ...
Controle da drenagem ácida de minas na mineração de carvão de Santa Catarina : ...
Schneider, Carlos HenriqueO presente trabalho aborda o problema relacionado a gestão para controle de drenagem ácida gerada em uma mineração de carvão, assim como as principais ações ambientais tomadas para o controle deste efluente no âmbito da unidade mineira pertencente a Carbonífera Criciúma S.A., identificada como UM II – Verdinho. Conduziram-se estudos de caracterização dos rejeitos da mineração e da qualidade da água gerada nas d...