To identify sand crab Ovalipes punctatus populations and establish management units for each population, mtDNA COI regions were analyzed. As a result, the clade of O. punctatus in Korea were separated by two with a genetic distance of 0.17 – 2.08%, and there was no significant difference in the result of pairwise FST values representing genetic differentiation by sampling areas (p > 0.05). Also, no geographical separation found in the distribution of haplotypes and the results of the haplotype network. This result suggests that O. punctatus larvae were dispersed for a long time by the ocean current by suffering meroplanktonic period for 1 month, and increased the gene flow due to the development of the swimming legs for the increase in mobility. Therefore, in the results of mtDNA COI region analysis of O. punctatus in the East Sea, Yellow Sea, South Sea and East China Sea (Ieodo) of Korea, no clear intra-species differentiation was found.

서 론
재료 및 방법
    시료 채집
    Genomic DNA 추출 및 분석
    자료 분석
결 과
    mtDNA 분석
    해역별 유전적 분화도와 다양성
    집단통계학적 분석
    해역별 유전자형의 분포 및 구조
고 찰
결 론
사 사

• 이현규(국립수산과학원 수산자원연구센터 연구원) | Hyeon Gyu LEE (Researcher, Fisheries Resources Research Center, National Institute of Fisheries Science, Tongyeong 56034, Korea)
• 명세훈(국립수산과학원 수산자원연구센터 연구사) | Se Hun MYOUNG (Researcher, Fisheries Resources Research Center, National Institute of Fisheries Science, Tongyeong 56034, Korea)
• 이정훈(국립수산과학원 수산자원연구센터 연구관) | Jeong-Hoon LEE (Researcher, Fisheries Resources Research Center, National Institute of Fisheries Science, Tongyeong 56034, Korea)
• 최윤희(부경대학교 수산생명과학부 교수) | Youn Hee CHOI (Professor, Division of Fisheries Life Sciences, Pukyong National University, Busan 48513, Korea) Corresponding author