Density-dependent unidirectional hybridization between the Japanese pond turtle, Mauremys japonica and the exotic Reeves’ pond turtle, Mauremys reevesii in Japan, inferred from molecular and morphological analyses

Hybridisation between the indigenous Japanese pond turtle, Mauremys japonica, and the exotic Reeves’ pond turtle, Mauremys reevesii, is widespread in Japan. In this study, we examined this hybridisation using an analysis of mtDNA and 11 microsatellite markers (MS) combined with morphometry. In a Bayesian clustering analysis of MS, the admixture of two clusters equivalent to the two species was detected in the Seto Inland Sea and Ise Bay regions. While mtDNA showed reciprocal hybridisation between the two species, their hybrids tended to possess the mtDNA of the rarer species at each locality. Contrary to preceding studies, F2/later generations outnumbered F1 generations. In addition, the admixture of two mtDNA lineages (Chinese and Korean) of M. reevesii was widely observed in all regions, together with the range expansion of the recently introduced Chinese lineage. A significant correlation was observed between plastron morph and assignment probability of MS, showing that plastron morp..., See Matsuda et al. (2024), Density-dependent unidirectional hybridization between the Japanese pond turtle, Mauremys japonica and the exotic Reeves’ pond turtle, Mauremys reevesii in Japan, inferred from molecular and morphological analyses. Zoological Journal of the Linnean Society., , # Data from: Density-dependent unidirectional hybridization between the Japanese pond turtle, Mauremys japonica and the exotic Reeves’ pond turtle, Mauremys reevesii in Japan, inferred from molecular and morphological analyses

This is the dataset of microsatellites used in the above paper. The Excel spreadsheet contains microsatellite data for 409 samples of Mauremys japonica, M. reevesii, and their hybrids from one population.

Data are formatted for analysis in the software Genalex (Peakall, R. & Smouse, P. E. (2006). GENALEX 6: genetic analysis in Excel. Population genetic software for teaching and research. *Molecular Ecology Notes, 6*, 288-295; Peakall, R.& Smouse, P.E. (2012). GenAlEx 6.5: genetic analysis in Excel. Population genetic software for teaching and research – an update. *Bioinformatics 28*, 2537-2539); [https://biology-assets.anu.edu.au/GenAlEx/Welcome.html](https://biology-assets.anu.edu.au/GenAlEx/Welcome.html)

Data are as per Genalex formatting requiremen...