バラタナゴ2亜種（ニッポンバラタナゴおよびタイリクバラタナゴ）におけるマイクロサテライト座のサイズホモプラシー

抄録

Molecular markers which clearly discriminate between the endangered Japanese rose bitterling Rhodeus ocellatus kurumeus and an introduced exotic subspecies, Rhodeus ocellatus ocellatus, are very useful for the continued conservation of the former. From this standpoint, the development of microsatellite markers for R. ocellatus have already been reported elesewhere. However, electropherograms showed that 9 pairs of alleles at 7 out of 11 loci had a common size in both subspecies. Six pairs of the 9 were homoplasic and 2 pairs had identical sequences between the subspecies. The presence of allelic microsatellite fragments having the same electrophoretic mobility in both subspecies does not necessarily indicate a hybridization or introgression event between the two subspecies.