Consulta: creatorFacets:"Fontanetti,Carmem S."
Registros recuperados: 10
Data/hora: 02/06/2024 05:35:46

Application of the comet assay in erythrocytes of Oreochromis niloticus (Pisces): a methodological comparison
Provedor de dados: 74
Autores: Christofoletti,Cintya A.; David,José Augusto O.; Fontanetti,Carmem S.
The present study applied the comet assay to erythrocytes of Oreochromis niloticus with the aim of improving protocols to detect DNA damage in these cells, by using two distinct pHs (pH = 12.1 and pH &gt; 13) and evaluating whether there is a correspondence between silver and ethidium bromide staining. Comets were visually examined and, the frequency of cells with and without damage was obtained, as well as the distribution of classes and scores. By using the Kruskal-Wallis test, our results revealed that pH 12.1 is more effective, although both pHs can be used. Our findings also suggest that silver staining can substitute ethidium bromide, an expensive and highly toxic stain that requires specific equipment for examination.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Comet assay; Ethidium bromide; Silver staining; Tilapia.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100024

Metanotal gland of the genus Eidmanacris (Grylloidea, Phalangopsidae): taxonomic importance
Provedor de dados: 76
Autores: Prado,Rogilene Aparecida; Fontanetti,Carmem S.
The present study compares the metanotal gland through scanning electron microscopy in five species of Eidmanacris: E. corumbatai Garcia, 1998, E. alboannulata (Piza, 1960), E. dissimilis Desutter-Grandcolas, 1995, E. larvaeformis (Chopard, 1938) and Eidmanacris sp. The general external configuration of the gland was determined by the presence of two median projections with apical opening and a cluster of bristles just above these projections. Although there is a general pattern for this gland, each species has its own pattern, which can be defined mainly by the arrangement of the bristles and the position of the median projections. Our results suggest the taxonomical importance of these structures, which should be better analyzed when describing species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mating; Cricket; Metanotal gland; Reproductive behavior.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212005000100012

Chromosomal characterization of Pseudonannolene strinatii (Spirostreptida, Pseudonannolenidae)
Provedor de dados: 76
Autores: Campos,Kleber Agari; Fontanetti,Carmem S.
The chromosomes of the cave millipede Pseudonannolene strinatii Mauriès, 1974 were investigated. The diploid chromosome number was found to be 2n=16, XX/XY; the C-banding technique revealed a large amount of heterochromatin while the silver staining technique (Ag-NOR) evidenced the presence of heteromorphism of the NORs in some cells.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diplopoda; Cytogenetics; Caves; Heterochromatin.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000100009

A new species of Urostreptus (Diplopoda, Spirostreptidae): description and chromossome number
Provedor de dados: 76
Autores: Pierozzi,Pedro H. B.; Fontanetti,Carmem S.
This work presents the description and chromosome number of Urostreptus atrobrunneus sp. nov. The genus until now had not been registered yet in the São Paulo State, Brazil. The meiotic analysis showed that the species presents 2n=24, XY. The C-banding revealed large blocks of constitutive heterochromatin and two heteromorphic chromosomal pairs, one of them corresponding to the sexual pair.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Urostreptus; Diplopoda; Cytogenetics; Banding.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000200011

The fat body in Rhinocricus padbergi (Diplopoda, Spirobolida)
Provedor de dados: 76
Autores: Fontanetti,Carmem S.; Camargo-Mathias,Maria I.; Tiritan,Bianca M. S.
The distribution and morphology of fat body of Brazilian diplopod Rhinocricus padbergi Verhoeff, 1938 are analyzed by scanning electron microscopy and histology. A terminology is proposed for description of the diplopods fat body.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fat body; Diplopod; Rhinocricus; Terminology.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000400002

Comparative cytogenetics in different populations of the cavernicolous diplopod Pseudonannolene strinatii (Diplopoda, Pseudonannolenidae)
Provedor de dados: 76
Autores: Campos,Kleber A.; Fontanetti,Carmem S.
Different populations of Pseudonannolene strinatii Mauriès, 1974 collected from three caves in Iporanga, state of São Paulo, were cytogenetically compared using techniques of conventional coloration, C-banding and silver nitrate impregnation. Specimens were morphologically similar and small cytogenetic differences were observed between the populations with relation to the distribution of constitutive heterochromatin.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Millipedes; C-banding; Karyotype; AgNOR; Chromosomes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000100006

Microspines in the pylorus of Pseudonannolene tricolor and Rhinocricus padbergi (Arthropoda, Diplopoda)
Provedor de dados: 76
Autores: Miyoshi,Akio R.; Gabriel,Vagner A.; Fantazzini,Evandro R.; Fontanetti,Carmem S.
The aim of this paper is to report the morphology and distribution of microspines in diplopods pylorus, as these are important structures present along the alimentary tract of arthropods. The morphology of the internal surface of the pylorus of Pseudonannolene tricolor Brolemann, 1901 and Rhinocricus padbergi Verhoeff, 1938 was analyzed by SEM. Pseudonannolene tricolor presents two morphologically distinct pyloric regions: anterior and posterior. The first region is characterized by the presence of thin microspines that increase in number and size towards the posterior portion; the second region presents smaller and triangular-shaped microspines distributed throughout small plates. The pylorus of R. padbergi does not present differentiated regions; the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alimentary canal; Hindgut; Morphology; Scanning microscopy.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212005000200008

Cryptic species of Gryllus in the light of bioacoustic (Orthoptera: Gryllidae)
Provedor de dados: 82
Autores: David,José A. de O.; Zefa,Edison; Fontanetti,Carmem S.
The Gryllus genus represents one the most complex in the Orthoptera systematic, characterized by a set of cosmopolite and cryptic species, many of them already described. This study compared the songs emitted by Gryllus specimens collected on the UNESP campus in Rio Claro (SP) and the pars stridens morphology and morphometry, to use the results to recognize possible cryptic species and contribute to the discussion of speciation processes. Three groups of crickets were discriminated by differences in the pars stridens and calling songs, characterized by different rhythms, frequencies and note composition, that indicated the presence of three species in the location analyzed, that presented few morphological differences. It is suggested from the results that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Bioacoustic; Pars stridens.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000100010

Description and chromosome number of a species of Pseudonannolene Silvestri (Arthropoda, Diplopoda, Pseudonannolenidae)
Provedor de dados: 104
Autores: Fontanetti,Carmem S.
Pseudonannolene mesai sp.n. from Biritiba Mirim, State of São Paulo, Brazil, is described and the chromosome number (2n=16) is reported. It was impossible to observe the chromosomal sex determination mechanism.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diplopoda; Pseudonannolene; Mtllipeds; Cytogenetics.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000100014

Morphological characterization of the proventriculus of Gryllus assimilis Fabricius (Orthoptera, Gryllidae)
Provedor de dados: 104
Autores: Fontanetti,Carmem S.; Zefa,Edison.
The proventriculus morphology of the cricket Gryllus assimilis Fabricius, 1775 is described using scanning electron microscopy and the correlation of this structure with the feeding habits briefly considered.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orthoptera; Gryllidae; Gryllus; Proventriculus.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000100015