Distribution of indigenous and non-indigenous mtDNA haplotypes of Biwia zezera (Cyprinidae) in northern Kyushu

概要

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The Japanese cyprinid fish Biwia zezera, naturally distributed on the Nobi Plain and in the Lake Biwa-Yodo River system, is also distributed in northern Kyushu, although it has been unclear whether or not that population was indigenous. Sixty-five specimens of B. zezera were sampled from four localities in northern Kyushu (Ima River, Naka River, Chikugo River and Kase River) and the mitochondrial cytochrome b gene sequenced for a comparison with sequences from Nobi Plain and Lake Biwa populations. The phylogenetic and population genetic analyses of mtDNA sequences suggested that the northern Kyushu populations of B. zezera were naturally distributed in the area, although three of the 11 mtDNA haplotypes in the Kyushu populations may have been artificially introduced from Lake Biwa.
日本魚類学会の論文