Now showing items 1-9 of 9
Is there post-meiotic transcriptional activity during hemipteran spermiogenesis?
(Invertebrate Reproduction & Development, 2014-09-01) [Artigo]
Different techniques have been used to evaluate post-meiotic nucleolar activity during spermatogenesis. However, the results have not been consistent, and transcriptional activity during spermiogenesis is still a highly ...
Karyotype of Triatoma melanocephala Neiva and Pinto (1923). Does this species fit in the Brasiliensis subcomplex?
(Infection, Genetics and Evolution, 2012-12-01) [Artigo]
Triatoma melanocephala is a rare species of Hemiptera that belongs to the Brasiliensis subcomplex. This subcomplex is composed of cryptic species, and the basic number of chromosomes for triatomines of this subcomplex is ...
Cytogenetic and morphologic approaches of hybrids from experimental crosses between Triatoma lenti Sherlock & Serafim, 1967 and T. sherlocki Papa et al., 2002 (Hemiptera: Reduviidae)
(Infection Genetics And Evolution, 2014-08-01) [Artigo]
The reproductive capacity between Triatoma lenti and Triatoma sherlocki was observed in order to verify the fertility and viability of the offspring. Cytogenetic, morphological and morphometric approaches were used to ...
Spermatogenesis in Triatoma melanica Neiva and Lent, 1941 (Hemiptera, Triatominae)
(Journal Of Vector Ecology, 2014-06-01) [Editorial]
Spermatogenesis in Triatoma williami Galvao, Souza and Lima (1965) (Hemiptera, Triatominae)
(Invertebrate Reproduction & Development, 2014-04-03) [Artigo]
Cytogenetics has proven to be an important tool in the study of triatomine taxonomy. Triatoma williami is a triatomine that has been classified within the Matogrossensis subcomplex. In this study, the cytogenetic technique ...
Heteropyknotic filament in spermatids of Triatoma melanocephala and T. vitticeps (Hemiptera, Triatominae)
(Invertebrate Reproduction & Development, 2014-01-01) [Artigo]
The species Triatoma melanocephala and T. vitticeps are vectors of Chagas disease in Brazil. An analysis of the number of chromosomes has led to the proposal of the exclusion of both these species and T. tibiamaculata from ...
Nucleolar persistence during spermatogenesis of the genus Rhodnius (Hemiptera, Triatominae)
(Cell Biology International, 2014-08-01) [Artigo]
The Triatominae subfamily is comprised of 18 genera and six tribes. The tribe Rhodniini is comprised of two genera (Rhodnius and Psammolestes). Nucleolar persistence is defined by the presence of the nucleolus or nucleolar ...
Chromosomal characteristics and distribution of constitutive heterochromatin in the Matogrossensis and Rubrovaria subcomplexes
(Infection Genetics And Evolution, 2015-07-01) [Artigo]
Since 1966 the triatomines were grouped in complexes and specific subcomplexes. Although the complex and subcomplexes not have taxonomic importance, should be monophyletic groups and cytogenetic tools have proved to be of ...
Immunofluorescence and ultrastructural analysis of the chromatoid body during spermatogenesis of Triatoma platensis and T. rubrovaria (Hemiptera, Triatominae)
(Micron, 2015-07-01) [Artigo]
This study sought to analyze spermatogenesis in two species of triatomines (Triatoma rubrovaria and T. platensis) by focusing on the chromatoid body (CB) during three stages of spermatogenesis (spermatocytogenesis, meiosis, ...