Genetic relationships in Yamato-iwana, a subspecies of white-spotted char, Salvelinus leucomaenis japonicus

Kawai Koichiro

Miyamoto Kaishin

Saito Hidetoshi

広島大学総合博物館研究報告

Bulletin of the Hiroshima University Museum

[PISSN] 1884-4243

[EISSN] 1884-3999

[NCID] AA12459864

The genetic relationships in a subspecies of white-spotted char, Salvelinus leucomaenis japonicus Oshima, distributed in central Japan, were examined based on the DNA sequences in the mitochondrial cytochrome b region. A total of 12 haplotypes were recognized; haplotypes 2 and 5 were co-dominant. Two large clades were observed in a genetic tree. The Hidaka, Yahagi, and Ibi rivers constructed only the larger clade, whereas the Yogo and Sagami rivers constructed only the smaller clade. A small clade of haplotypes 3, 8, and 10 comprising the samples from the Hidaka and Yahagi rivers and almost all samples from Kiso River was separated deeply. In addition, haplotype 8 from the Nomugi (1446 m) site was estimated to be the newest lineage. However, there were no significant correlations between geographical and genetic distances. These results suggest that this subspecies has multiple origins, its genetic structure is determined by other factors than the river basin, and geological events were scarcely involved in its range expansion.

Char

genetic relationship

cytochrome b

Salvelinus

Zoology [ 480 ]

eng

広島大学総合博物館

Copyright (c) 2017 広島大学総合博物館 Hiroshima University Museum

[ISSN] 1884-4243

[NCID] AA12459864