Wanpen Kakampuy, Thavorn Supaprom, Claus Steinlein, and Michael Schmid

pp. 383 - 387

Abstract

This research was the first cytogenetic studies of green-eyed tree frog (Litoria genimaculata) and Nyakala frog
(L. nyakalensis). The mitotic chromosomes were prepared directly from bone marrow after in vivo colchicine treatment and
analysed following conventional, silver staining and C-banding techniques. These species showed similar karyotypes with
2n=26, the fundamental number (NF) are 52 chromosomes and Ag-NOR positions located in the short arm near centromeres
of chromosome pair 7 in L. genimaculata and in the long arm near telomeres of chromosome pair 9 in L. nyakalensis. The
C-banded karyotypes showed heterochromatin bands at the centromeres and telomeres of all chromosomes. Both species
were characterized by the number and position of constitutive heterochromatin in the karyotypes. The mitotic karyotypes of
L. genimaculata exhibited greater amounts of C-band positive heterochromatin than L. nyakalensis.