DOI: 10.5061/dryad.fxpnvx11c
title: 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

description: 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 morphology
 reflects the degree of introgression by M. reevesii in M. japonica. This
 finding means that the reproductive interference of the dominant species
 on a rarer species is a major factor driving the hybridisation of the two
 Mauremys species. In addition, the range expansion of the Chinese lineage
 of M. reevesii appears to enhance the introgression by M. reevesii in M.
 japonica.
description: 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.
description: # 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 requirements: Row 1: # of loci (11), # of individuals (409), # of populations (1). Row 2: title. Row 3: name of each of 11 loci. Rows 4-695: microsatellite data for each of 11 microsatellite loci for 409 samples. Column A: sample name. Column B: restored population name Columns C-X: Allele size at each of 11 microsatellite loci for each sample. Note this table can be read and analysed in Genalex. For details of sample information, see Table S1 of "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" in Zoological Journal of Linnean Society.