earticle

영어

Gekko japonicus are distributed at most regions of Japan, inland and the middle east regions of China and southern coastal cities of Korea. Although various studies have been conducted, no research was done on population genetics across the three countries. To verify the genetic diversity and population structure of G. japonicus across Korea, Japan and China, we collected total 416 geckos from thirteen populations, and obtained sequence data on mitochondrial DNA (ND2 and Cytb) and nuclear DNA (RAG-1). Overall, levels of intrapopulation genetic diversity were low, indicating moderate haplotype and low nucleotide diversity. Total 18 haplotypes appeared in mtDNA analysis. The haplotype and nucleotide diversity were 0.607±0.016, 0.00058±0.00002, respectively and for nDNA, we identified 27 haplotypes having 0.755±0.008 haplotype diversity, and 0.00516±0.00007 nucleotide diversity. In phylogenetic analyses, China had more older ancestors than Korea and Japan. Overall, our data suggest that the first introduction (or dispersal) might occur from China to Korea and Japan and the secondary introductions might occur among the three countries while occurring independent local genetic diversification in each country.