Table 1.

Phylogeographic comparisons of migration, morphological divergence, and niche differentiation in the P. coronatum complex

Phylogeographic comparison	Migration profile (LRT significance)	Morphometrics (male)	Morphometrics (female)	Bioclimate data	Niche identity (simulated mean, CI)
Northern California vs.Southern California	Nonzero peakP ≥ 0.322	F(1,91) = 0.0507P < 0.8223	F(1,92) = 0.0386P < 0.8447	F(1,303) = 1.9029P < 0.1688	0.546 (0.753, 0.0508)
Southern California vs.Northern Baja California	Nonzero peakP = 0.040	F(1,47) = 7.3432P < 0.0094	F(1,73) = 9.9786P < 0.0023	F(1,159) = 76.7841P < 0.0001	0.567 (0.834, 0.0562)
Northern Baja California vs.Central Baja California	Peak at zeroP ≥ 0.308	F(1,59) = 46.6623P < 0.0001	F(1,72) = 34.1975P < 0.0001	F(1,90) = 305.1521P < 0.0001	0.38(0.844, 0.0569)
Central Baja California vs.Southern Baja California	Peak at zeroP ≥ 0.200	F(1,84) = 22.1170P < 0.001	F(1,82) = 73.9413P < 0.0001	F(1,82) = 12.3785P < 0.0007	0.382(0.832, 0.0561)

The posterior probability distributions for migration rates have nonzero peaks for the 2 northern phylogeographic breaks (indicating presence of gene flow), but a nested demographic model assuming no migration cannot be rejected for the Southern vs. Northern California comparison using a likelihood ratio test (LRT). MANOVA results for morphological and environmental differences are significant (P < 0.05; shown in bold) for all but the Southern California vs. Northern California comparisons. Niche identity tests comparing the observed similarity values (Warren's I) to simulated distributions (100 pseudoreplicates) reject the hypothesis that any parapatric phylogeographic groups are distributed in identical climate space.