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Genetic differentiation in the mitochondrial cytochrome b gene of Korean brown frog, Rana dybowskii (Amphibia: Ranidae)

Animal Cells and Systems 1999년 3권 2호 p.199 ~ 205
김유리, 양동은, 이혁, 이정은, 이현익, 양서영, 이혜영,
소속 상세정보
김유리 ( Kim Yu-Ri ) - Inha University College of Science Department of Biology
양동은 ( Yang Dong-Eun ) - Inha University College of Science Department of Biology
이혁 ( Lee Hyuk ) - Inha University College of Science Department of Biology
이정은 ( Lee Jung-Eun ) - Inha University College of Science Department of Biology
이현익 ( Lee Hyun-lck ) - Inha University College of Science Department of Biology
양서영 ( Yang Suh-Yung ) - Inha University College of Science Department of Biology
이혜영 ( Lee Hei-Yung ) - Inha University College of Science Department of Biology

Abstract


The nucleotide sequences of a 504 bp segment of the mitochondrial cytochrome b gene were analyzed to survey the intraspecific variation of the brown frog, Rana dybowskii, collected from nine populations in South Korea. Comparisons of sequence divergence of the cytochrome b gene suggest that the populations examined are clearly classified into two types (type 1 and type 2), diverged from each other by a high value of 14.3?15.9% sequence divergence. The two types are distributed allopatrically in most populations, but only one population occurs sympatrically. In the Tonghae population, their spawning grounds differ in that type 1 spawns in the puddle and type 2 spawns in the mountain creek. Based on the genetic divergences of the cytochrome b gene sequences, the phylogenetic status of Korean R. dybowskii is elucidated by comparing it with related brown frogs distributed in an area adjacent to the Korean Peninsula. Interspecific sequence divergences among type 1, type 2 and other related brown frog species (Russian R. dybowskii, R. pirica, R. ornativentris, R. chensinensis: 2n=24 chromosomes) used in this study ranged from 11.7 to 16.3%. Ft. dybowskii in Tsushima is very similar to our type 1 (sequence divergence=0?1.6%) and R. chensinensis in western China is closest to our type 2 (sequence divergence=6.8?7.5%)

키워드

Genetic differentiation; Mitochondrial cytochrome b gene; Rana dybowskii; Sequence divergence

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