Ichthyosaura alpestris

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Supplementary Table S2 Eigenvalues and inertia for all dimensions from multiple correspondence analysis (MCA) of qualitative skull traits of Ichthyosaura alpestris and Lissotriton vulgaris paedomorphs.

Ichthyosaura alpestris and Lissotriton vulgaris (population as a
grouping factor)
No. of
dimension Eigen-values Percent of Inertia	Cumulative percent	Chi squares
1 0.602 22.584	22.584	128096.504
2 0.458 17.184	39.768	97469.369
3 0.295 11.053	50.821	62692.143
4 0.206 7.708	58.529	43718.656
5 0.192 7.212	65.741	40906.336
6 0.175 6.578	72.319	37311.166
7 0.145 5.453	77.772	30931.952
8 0.130 4.872	82.644	27633.937
9 0.120 4.509	87.153	25575.234
10 0.097 3.626	90.779	20565.350
11 0.086 3.212	93.991	18217.472
12 0.065 2.428	96.419	13770.713
13 0.032 1.215	97.633	6889.007
14 0.025 0.949	98.582	5384.512
15 0.023 0.848	99.430	4807.885
16 0.015 0.570	100.000	3232.252
Ichthyosaura alpestris (population and
sex as grouping factors)
No. of
dimension Eigen-values Percent of Inertia	Cumulative percent	Chi squares
1 0.439 16.459	16.459	44770.982
2 0.368 13.816	30.276	37581.777
3 0.315 11.812	42.087	32128.628
4 0.262 9.842	51.929	26770.601
5 0.205 7.700	59.629	20945.365
6 0.196 7.337	66.966	19957.826
7 0.169 6.321	73.287	17192.823
8 0.134 5.041	78.328	13712.229
9 0.127 4.771	83.099	12977.021
10 0.117 4.377	87.475	11904.796
11 0.097 3.645	91.120	9913.690
12 0.084 3.140	94.260	8540.352
13 0.071 2.648	96.908	7204.013