Table 6.

Bottleneck analysis for six populations of A. venetum. P-values are shown for Wilcoxon’s sign-rank test under both the stepwise mutation model (SMM) and the two-phase mutation model (TPM), along with the shape of the allelic distribution inferred from the mode-shift test

Population	Wilcoxon’s sign-rank test		Mode-shift test (distribution shape) a
	TPM	SMM
QG	0.116	0.348	shifted mode
LD	0.348	0.688	L-shaped
DF	0.102	0.326	L-shaped
XY	0.483	0.711	L-shaped
SY	0.688	0.839	L-shaped
BH	0.007	0.007	shifted mode

^a Note that an L-shaped distribution of alleles is expected in the absence of a bottleneck, whereas a distribution with a shifted mode is expected in a population that has gone through a bottleneck