Mitochondrial haplotypes of Acheilognathus typus collected in Lake Izunuma-Uchinuma and its catchment in 2015

Abstract

We sequenced mitochondrial control region from 32 individuals of an endangered bitterling Acheilognathus typus captured from July through December, 2015 in Lake Izunuma-Uchinuma and its catchment. There had been no record of A. typus since at least 2000 in Lake Izunuma-Uchinuma as it was nearly driven to extinction by predation of introduced largemouth bass Micropterus salmoides in 1990s. Specimens examined were characteristic in that they do not have widely distributed haplotype but that they have haplotypes characteristic to waters in and around Lake Izunuma-Uchinuma. There is no stock with this particular haplotype composition in other known habitats in the Izunuma-Uchinuma area. Individuals examined in this study would be derived from Izunuma-Uchinuma catchment with this characteristic haplotype composition. The largemouth bass eradication efforts by people nearby reduced the bass stock in the lake and cyprinid fishes are now recovering. Our report gives useful information for the prospective restoration process of the endangered bitterling in Lake Izunuma-Uchinuma from a genetic perspective. DDBJ/GenBank entries of sequences given in this report are LC158077-LC158108.