Figure 4

Tests for a shift in diversification rate and LTT plot for the focal clade (A) The Cyt b MCC chronogram. The node labeled ‘habitat shift’ corresponds to the ‘transition node’ in (Figure 3A). Stars identify subclades that were significant in the PRC analysis at α = 0.1. Phenacobius mirabilis, a benthic OPM species, is pictured. (B) LTT plot for the Cytb MCC gene tree after the transition node. Black dots indicate the actual number of lineages in our reconstructed tree. The stars correspond to the starred nodes in (Figure 4A). The solid black line denotes the mean, and dotted lines the 95% confidence intervals, from 10,000 simulated pure-birth phylogenies. The y-axis is on the log scale. Luxilus coccogenis, a pelagic OPM species, is pictured.