Karyotypes of Two Indian Grasshoppers of Mecopodinae (Orthoptera-Tettigoniidae)
1994 年 59 巻 3 号 p. 285-287
詳細
1994 年 59 巻 3 号 p. 285-287
(1) The chromosomes of two species of the genus Mecopoda are described.
(2) Mecopoda elongata has 2n=29 with 8 pairs of metacentric, 5 pairs of subacrocentric and one pair of acrocentric chromosomes. The karyotype of Mecopoda sp, consists of 2n=27 with all biarmed chromosomes- 8 pairs of metacentric, one pair of heteromorphic submetacentric with a secondary constriction in one homologue and 4 pairs of subacrocentric chromosomes. In both, the X chromosome is large and metacentric.
(3) The basic karyotype of the genus Mecopoda is assumed to be 2n=31 with all acrocentric chromosomes and the karyotypes of M. elongata and Mecopoda sp. are considered to be derived from such a basic karyotype by the mechanisms of centric fusion and pericentric inverson.
(4) The C-banded karyotype of Mecopoda sp. is presented showing the characteristic distribution of C-heterochromatin.
