山陽地方におけるニッポンバラタナゴの在来集団

抄録

Morphological and mitochondrial DNA characteristics were investigated for a captive population of the rosy bitterling Rhodeus ocellatus, founded from a now extinct wild population in an irrigation pond in Seto, Okayama Prefecture, Sanyo Region, Japan. The data strongly suggested that the captive population represents a pure strain of the native Nipponbaratanago, Rhodeus ocellatuskurumeus. This is the sole confirmed recent record of this endangered subspecies in the Sanyo Region. The current critical status of the population necessitates immediate stock preservation, pending future reintroduction and/or conservation introduction to the wild.