Table 2.

Demographic Model Inference Results from the Five Demographic Models Tested in ∂α∂i to Fit the 8× Unfolded SFS for Western Lowland Gorillas.

Demographic Model	Theta/Ancestral Pop Size	P1	T1	P2	T2		Log-Likelihood	AIC
Standard neutral	1,167,204						−60,420	120,840
	32,643
Exponential growth	1,299,805	0.09	0.009				−6,222	12,448
	36,352	3,272	12,432
Bottleneck, then exponential growth	1,181,405	39.54	0.33	0.32			−578	1,162
	33,040	1,306,416	10,903	401,771
Two epochs	1,297,300	3.4 e-13	1.2e-14				−5,654	11,312
	36,282	0	0
Three epochs	1,136,249	1.391	0.785	0.249		0.019	−473	954
	31,777	44,190	946,129	7,905		22,842

Note.—Gray line contains program parameter output, and white line contains conversion into years. With P1 first population size change, T1 length of bottleneck, P2 second size change, and T2 time of second size change. For the conversion, a mutation rate of 1.1e-8 mutations per base pair per generation and a 19-year generation time were used. The total number of callable sites is 812,645,853.