Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 15, Issue 3, 2013; Page No.(521-525)

KARYOTYPE ANALYSIS IN GYMNOCORYMBUS TERNETZI (BOULENGER, 1895)

B. ESAKKIAMMAL, S. MADASAMY AND T.A. SETHURAMALINGAM

Abstract

Karyotype analysis was performed on Gymnocorymbus ternetzi (Family: Characidae) by investigating the number and structure of its chromosomes. Metaphase chromosome spreads obtained from gill and tailfin epithelial cells and kidney were analysed under low and high power of microscope and photographed. The diploid chromosome number of this species was 2n = 48 (n- 24). The karyotype consist of 20 pairs of metacentric, 20 pairs of submetacentric, 6 pairs of sub telocentric, 2 pairs of telocentric chromosomes. The chromosomal information described here should be useful in monitoring gynogenetic population studies and hybridization in this species.

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