作者: Alessandra Morielle , Maria Tercília Vilela De Azeredo-Oliveira
DOI: 10.1080/00087114.2004.10589369
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摘要: Abstract - The purpose of this work was to study the karyotype, spermatogenesis and nucleolar activity at meiosis, in species Rhodnius domesticus (Heteroptera, Triatominae). testicular tubules were cytologically prepared by conventional method cell crushing subsequent application cytogenetic staining techniques with lacto-acetic orcein silver-ion impregnation. under presented karyotype 2n = 20A+XY, modal number subfamily Triatominae. chromosomes no primary constriction therefore characterized as holocentric. It observed that sex sometimes located periphery, close ring formed autosomes, first meiotic division. At metaphases II, positioned center autosomal ring, thus evidencing a postreductional behavior. These same showed late migration anaphases clearly impregnated silver-ions, suggesting they bore Nucleolar Organizer Reg...