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  • Title: [Chromosomal C-banding karyotype of 2 species of genus Asiotmethis (Acridoidea:Pamphagidae) from China].
    Author: Li XJ, Zhang DC, Wang WQ.
    Journal: Yi Chuan; 2005 Sep; 27(5):735-40. PubMed ID: 16257901.
    Abstract:
    The chromosomal C-banding karyotype in the spermatogenesis of 2 species of Genus Asiotmethis, Uvarov 1943 from China were investigated. It was found that the diploid chromosome number of Asiotmethis zacharjini (Bei-Bienko, 1926) was 2n (male) =18, the neo-X was a submetacentric chromosome and the rest were acrocentric chromosomes. C-banding pattern showed that all chromosomes presented a paracentromeric block, an interstitial C-band near the centrometic C-block and additional C-band in the distal region. And, the mechanism for sex determination lay in neo-XY (male). In Asiotmethis jubatus (Uvarov, 1926), the diploid chromosome number was 2n (male) =19. All autosomes and X-chromosomes were acrocentric with paracentromeric C-band only, and the mechanism for sex determination lay in XO (male). The difference in heterochromatin content between the 2 species was significant at 0.05 level.
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