Table 2.

Migration estimates (migrants per generation) for each pair of populations in both directions as inferred from mitochondrial data. Numbers in parenthesis indicate 90% confidence intervals. The number of migrants exceeded one migrant per generation in just one case (from Oophaga histrionica to pHYB)

From/To	O. histrionica	pHYB	O. lehmanni
O. histrionica		1.09 (1.2–4.20)	0.41 (0.3–4.04)
pHYB	0.001 (0.0025–0.84)		0.11 (0.002–2.45)
O. lehmanni	0.28 (0.002–2.04)	0.51 (0.2–3.33)