Phylogeography of amphi-boreal fish: tracing the history of the Pacific herring Clupea pallasii in North-East European seas

Table 4 Estimates of ancestral population variability ( θ = N _e μ ), splitting parameter s, post-splitting migration rates ( m ₁ = migration to NWP, m ₂ = migration to Europe) and parameter of time since divergence (t) obtained from coalescence-based IM model runs of the trans-Arctic clade

NW Pacific vs.	θ _A	1-s	m ₁	m ₂	t	(90% HPD)
- White Sea group^a	74	0.85%	2.98	0.003	0.44	(0.30–0.63)
- White Sea group^b	54	1.85%	1.33	0.138	0.59	(0.56–1.49)
- Mezen–Chesha group	83	1.15%	4.99	0.003	0.43	(0.25–1.50)
- Balsfjord^a	41	0.05%	0.65	0.003	*	-

The three genetically homogeneous European subgroups were individually compared with the pooled NW Pacific samples. More details in Additional file 3: Table S2.
^a Upper limits for prior distribution of θ set to 1000.
^b Upper limits for prior distribution of θ were set to θ_NWP=1000, θ_Eur=100 and θ_A=100.
* The analysis did not converge.

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