ミトコンドリアゲノムND4遺伝子領域における福井県産アラレガコの遺伝的多様性

概要

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The mitochondrial DNA sequence for the ND4-tRNA^<Leu> region was determined for 57 Cottus kazika individuals collected at two sample localities. Only four haplotypes, including four polymorphic sites without insertion and deletion, were detected, of which most dominant haplotype were shared between two localities. The nucleotide and haplotype diversities at Kuzuryu River and Mimi River were 0.0009 and 0.0001, 0.437 and 0.077, respectively. No significant population subdivision was detected among the sample locatins based on the Φ_<ST> value and the analysis of the molecular variance model (AMOVA).These results indicate that there is no genetic differentiation between two rivers and low genetic variations. Furthermore, the fact that there is a little genetic exchange because this species is direct developmental type, supports slow rate of evolution.