Karyotype Evolution of Drymadusini (Decticinae, Orthoptera)
1996 年 61 巻 1 号 p. 33-39
詳細
1996 年 61 巻 1 号 p. 33-39
Karyotypes (chromosome number and shape) of eight species of the Drymadusini group were studied. The chromosome numbers in this group range from 2n_??_ = 25 to 31. Cytological analysis of these species indicate the presence of a more intensive karyotype evolution than in other genera of the Old World Decticinae. Additionally, C-band distribution and chromosomal location of the NORs were studied. Paracentromeric, interstitial, and distal C-banding in this species was observed. Three of the five analysed species showed a single active NOR located on the M2 bivalent, whereas two active NORs (primary and secondary) were observed in the two remaining species.
