Natural hybridization between two Japanese medaka species (Oryzias latipes and Oryzias sakaizumii) observed in the Yura River basin, Kyoto, Japan

被引:6
作者
Iguchi, Yuka [1 ]
Kume, Kouki [1 ,2 ]
Kitagawa, Tadao [1 ]
机构
[1] Kindai Univ, Grad Sch Agr, Program Environm Management, 3327-204 Nakamachi, Nara, Nara 6318505, Japan
[2] EIKoei Co Ltd, Chiyoda Ku, 4-2-7 Kojimachi, Tokyo 1020083, Japan
关键词
Hybrid index; Channel shift; Reproductive isolation; Nuclear DNA marker; HYBRID ZONES; POPULATIONS; DIVERGENCE; INTROGRESSION; DISTRIBUTIONS; EVOLUTIONARY; SPECIATION; TELEOSTEI; SOFTWARE; SOUTHERN;
D O I
10.1007/s10228-018-0623-x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
To determine the actual state of hybridization between two Japanese medaka species (Oryzias latipes and Oryzias sakaizumii) in their natural environment, we used nuclear DNA markers at 10 loci to analyze 215 individuals from eight wild populations in the middle reaches of the Yura River basin in Japan, where the two species are sympatric. Despite large genetic differentiation between the two species, reproductive isolation between them could not be confirmed. We also discussed the formation of the current distribution patterns of the two species and their hybridization zone in the Yura River basin.
引用
收藏
页码:405 / 411
页数:7
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