Recent range expansion of an intermediate host for animal schistosome parasites in the Indo-Australian Archipelago: phylogeography of the freshwater gastropod Indoplanorbis exustus in South and Southeast Asia

Table 5 Estimated parameters of the sudden demographic and spatial expansion models for the population of the Indo-Australian Archipelago based on the distribution of pairwise nucleotide differences

Model	SSD	P (SSD)	HI	P (HI)	τ	T [y]	ΔT [y]
Sudden demographic expansion	0.021	0.160	0.431	0.620	3.000	198,950	162,898–255,493
Spatial expansion	0.007	0.490	0.431	0.720	5.867	389,079	318,575–499,659

Abbreviations: SSD sum of squared deviation, HI Harpending’s raggedness index, τ estimator of the mutational time since the occurrence of the population expansion in units of mutational time, T time since expansion in years

ISSN: 1756-3305