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Cytogenetics of six Brazilian species of Psocoptera
(Sociedade Brasileira de Genética, 1996-01-01)
The karyotypes of the following six species of Brazilian Psocoptera are reported: Caecillius sp. (Caecillidae), Triplocania ? caudata New (Ptiloneuridae), Brachinodiscus cf. lepidus (Banks) (Psocidae), Psococerastis ...
110 Years of orthopteran cytogenetics, the chromosomal evolutionary viewpoint, and Michael White's signal contributions to the field
(Pensoft Publishers, 2010-12)
The history of the study of orthopteran chromosomes is coincident with the formulation of the chromosome theory of heredity and the rediscovery of Mendel's laws, thus with the birth of cytogenetics. We review the early ...
Cytogenetic studies in Diplopoda
(2002-09-01)
The Diplopoda have received little attention from cytogeneticists owing mostly to technical difficulties in obtaining mitotic chromosomes, restricting the studies to meiosis and eventual spermatogonial metaphases, which ...
Cytogenetic analysis in the spermatogenesis of Triatoma melanosoma (Reduviidae; Heteroptera)
(2008-07-30)
Triatomines are of great concern in public health because they are vectors of Chagas' disease. This study presents an analysis of the species Triatoma melanosoma. The cytogenetic characteristics of triatomines include ...
Cytogenetic studies of Brazilian pediatric myelodysplastic syndrome cases: challenges and difficulties in a large and emerging country
(Associação Brasileira de Divulgação Científica (ABRADIC), 2013-01-11)
Myelodysplastic syndromes (MDS) and juvenile myelomonocytic leukemia (JMML) are rare hematopoietic stem cell diseases affecting children. Cytogenetics plays an important role in the diagnosis of these diseases. We report ...
Integrating cytogenetics and genomics in comparative evolutionary studies of cichlid fish
(Biomed Central Ltd., 2012-09-09)
Background: The availability of a large number of recently sequenced vertebrate genomes opens new avenues to integrate cytogenetics and genomics in comparative and evolutionary studies. Cytogenetic mapping can offer ...
A method for chromosome preparations from large fish specimens using in vitro short-term treatment with colchicine
(Birkhauser Verlag Ag, 1993-09-15)
This paper describes a new technique for preparing mitotic fish chromosomes using short-term in vitro treatment with colchicine. The results show that a large number of good quality metaphases (many suitable for chromosome ...
Analysis of spermiogenesis like a tool in the study of the triatomines of the Brasiliensis subcomplex
(2013-01-01)
The specific identification and systematic of triatomines have been based fundamentally on morphological observations. These organisms are classified into complexes and specific subcomplexes, principally for morphological ...
Fish cytogenetic research: Advances, applications and perspectives
(1991-12-01)
Methods developed since 1976 for harvesting, preparing and banding fish chromosomes are now commonly used for taxonomic and phylogenetic studies, genetic control and chromosome manipulations in fish breeding and in monitoring ...
First cytogenetic description of the species Rhamdella microcephala (Pisces, Hepapteridae)
(2003-03-01)
Cytogenetic studies were carried out on Rhamdella microcephala collected from the headwaters of the Machado river, a tributary of the Sapucaí river, Minas Gerais, Brazil. Sixteen specimens exhibited 2n=56 chromosomes, with ...