Genetic Diversity and Speciation of Rana rugosa (Amphibia; Ranidae)

  • Yang, Suh-Yung (Department of Biology, College of Natural Sciences, Inha University) ;
  • Min, Mi-Sook (Department of Biology, College of Natural Sciences, Inha University) ;
  • Kim, Jong-Bum (Department of Biology, College of Natural Sciences, Inha University) ;
  • Suh, Jae-Hwa (Department of Biology, College of Natural Sciences, Inha University) ;
  • Kang, Young-Jin (Department of Biology, College of Natural Sciences, Inha University)
  • Published : 2000.03.01

Abstract

Horizontal starch gel electrophoresis for 29 populations (n=543) of the wrinkled frog, Rana rugosa, from Korea and Japan was peformed to assess the degree of genic variation and genetic diversity, and to understand the biogeographic pattern of distribution and speciation. A sum of 22 presumptive loci was screened from 17 enzymes and general proteins. Four loci, Aco, Est-3, Me-2, and Pgm, demonstrated high levels of polymorphism. The degree of average genetic variation of R. rugosa was P=22.7% (9.1-40.9%), Ho=0.086 (0.048-0.165) and He=0.090 (0.042-0.168). In the south-eastern region of the Korean peninsula (Chongsong, Yongchon, Ulsan, Kyongju, Pohang, yongdok and Ulchin), a few unique alleles in the Mpi locus were detected and their biogeographic implications were considered. The degree of genetic differentiation among the Korean populations was moderate (S=0.900), whereas the degree of genetic diversity between Korean and Japanese populations was notably high (S=0.687, D=0.293). This result corresponds with the data obtained by the mitochondrial cytochrome b gene sequence (Lee et al., 1999) suggesting that the Korean and Japanese R. rugosa might have evolved a specific level of genetic differentiation since their geographic isolation.

Keywords

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