10 documents found, page 1 of 1

Differential Expression of Genes Related to Sexual Determination Can Modify the...

Made available in DSpace on 2020-12-10T19:43:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-11-01; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Fundacao Araucaria (Fundacao Araucaria de Apoio ao Desenvolvimento Cientifico e Tecnologico do Estado do Parana); The species complex Astyanax scabripinnis is one of...

Karyotypic variability in Iheringichthys labrosus (Teleostei, Pimelodidae) from...

Cytogenetic analyses were carried out in a populational sample of Iheringichthys labrosus from the Guaraúna River (Upper Tibagi River; Paraná State, Brazil) in order to provide a karyotypic comparison with another previously studied population from the Lower Tibagi River, characterized by the presence of 32m + 8sm + 6st + 10a (2n = 56, FN = 102) and occurrence of supernumerary chromosomes (80% of individuals). ...

Repetitive sequences: The hidden diversity of heterochromatin in prochilodontid...

The 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...

Two genetic stocks of steindachneridion melanodermatum living in sympatry in na...

Steindachneridion melanodermatum is a large Brazilian catfish, highly prized for sport fishing and for its meat. Specimens of this species, both caught in nature from Iguacu River and F1 fish born in captivity, were analyzed with regard to patterns of RAPD molecular markers. Genetic similarity ranged from 0.57 to 0.95; two groups were determined for the wild specimens. The results suggest different genetic line...

Karyotype variability in neotropical catfishes of the family pimelodidae (teleo...

Karyotypic data are presented for four species of fish belonging to the Pimelodidae family. These species show a conserved diploid number, 2n = 56 chromosomes, with different karyotypic formulae. The analyzed species showed little amount of heterochromatin located preferentially in the centromeric and telomeric regions of some chromosomes. The nucleolus organizer regions activity (Ag-NORs) and the chromosomal l...

Genetic variability in a population of Astyanax scabripinnis: recent bottleneck...

Access the genetic variability of endangered and isolated populations has become an important conservation tool. Astyanax scabripinnis is a well-known fish model for genetic studies, forming very isolated populations in headwaters. Besides that, this species frequently presents supernumerary chromosomes, which elevates the interest on genetic studies. Genetic diversity of an Astyanax scabripinnis population fro...

Relações corporais, composição centensimal e rendimento de filé do mandi (Pimel...

Made available in DSpace on 2017-07-10T17:48:20Z (GMT). No. of bitstreams: 1 Mara_Cristina_de_Almeida.pdf: 671208 bytes, checksum: 3d06bb753a794295c1d35ff900171c02 (MD5) Previous issue date: 2010-03-30; The mandi-pintado (Pimelodus britskii) a endemic species from Iguaçu River basin seems to have high potential for commercial exploitation. Thus, the aim of this study was to evaluate the potential for commercial...

Karyotype characterization, constitutive heterochromatin and nucleolus organize...

Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T19:04:57Z No. of bitstreams: 1 S1415-47572006000300013.pdf: 168952 bytes, checksum: 3a0980ef6b7bfac244663b9166c515fc (MD5); Made available in DSpace on 2013-08-22T19:04:57Z (GMT). No. of bitstreams: 1 S1415-47572006000300013.pdf: 168952 bytes, checksum: 3a0980ef6b7bfac244663b9166c515fc (MD5) Previous issue date: 2006-01-01; Made availabl...

Cytogenetic analysis of Epicauta atomaria (Meloidae) and Palembus dermestoides ...

Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:19:59Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:34:06Z : No. of bitstreams: 1 2-s2.0-0034454329.pdf: 1042449 bytes, checksum: 4c059a042d4f044adf052ee1d99aef16 (MD5); Made available in DSpace on 2014-05-27T11:19:59Z (GMT). No. of bitstreams: 0 Previous issue date: 2000-12-01; The mitotic and meiotic chromosomes...

New HNF-1α nonsense mutation causes maturity-onset diabetes of the young t...