Table 1.

Locations and estimated rates of self-fertilization in seven populations of Utterbackia imbecillis

Population	N	Locus	Selfing rate	P <
				H0: S = 0	H0: S = 1
Oklawaha River, Marion Co., FL	24	aat	−0.04	0.73	0.36
		pgm	0.30	0.09	0.0001
Dead River Lake, Jackson Co., MS	7	pgi	0.25	0.22	0.02
Little River, Gadsden Co., FL	5	fum	0.69	0.21	0.33
Mill Creek, Jackson Co., IN	12	aat	0.57	0.25	0.12
		pgm	0.86	0.08	0.35
Suntree Pond, Brevard Co., FL	33	aat	0.85	0.003	0.05
Pickering Creek, Chester Co., PA	12	aat	0.86	0.08	0.36
Suwannee River Canal, Dixie Co., FL	34	aat	1.00	0.0001	1.00
		fum	1.00	0.0001	1.00

N, number of individuals; H₀, null hypothesis.