| genetic relationships among korean brown frog species (anura, ranidae), with special reference to evolutionary divergences between two allied species rana dybowskii and r. huanrenensis. | allozyme analysis for 41 populations of brown frog species, rana dybowskii, r. huanrenensis, and r. amurensis from korea and three reference species (chinese r. chensinensis and japanese r. dybowskii and r. tsushimensis), were performed to clarify taxonomic status of korean brown frogs. the level of average genetic differentiation (nei's d) among local populations of each species in korea was very low (d<0.01 2) and korean and japanese r. dybowskii also showed conspecific level of differentiatio ... | 2002 | 12125935 |
| distinct specific status of the korean brown frog, rana amurensis coreana (amphibia: ranidae). | we used morphological and genetic data to assess the taxonomic status of rana amurensis coreana and r. a. amurensis. morphological comparisons revealed these two subspecies to be different from each other in size of body, nature of tubercles on dorsal stripe, degree of development in toe webbing, and condition of lateral spots of trunk. they were also different in sequence of mitochondrial 16s rrna gene, with genetic distance as large as those observed among different species of brown frogs. the ... | 2006 | 16603814 |
| karyotypes of several frogs from korea, taiwan and the philippines. | rana amurensis coreana, r. plancyi chosenica, r. latouchii, r. narina and ooeidozyga laevis have 2n = 26 chromosomes, r. kuhlii has 2n = 22, and kaloula picta has 2n = 28. males of r. narina have a conspicuous heteromorphic pair, no.8, which might play a rôle in sex-determination. | 1980 | 7398842 |