SEQUENCE CONSERVATION ON SEGMENTS OF MITOCHONDRIAL 16S rRNA AND CYTOCHROME B IN STRAINS OF COMMON CARP(CYPRINUS CARPIO L. VAR.)

Mitochondrial DNA sequence analysis was carried out in 3 strains of Chinese carp(Cyprinus carpio L. var.), i.e.red carp, mirror carp and wild carp and compared with reference carp strain of unknown origin. There were no base substitutions among 3 strains at up to 859 base pairs, however, comparison between these sequences and homologous sequence of the reference strain showed about 0.19% and 1.46% divergence at 16S rRNA and Cytochrome b sequence, respectively. These results indicate that the genetic divergence among red carp, mirror carp and wild carp is exceptionally low, and they are probably an independent branch in the evolution of carp.