Data from: The geography of morphological convergence in the radiations of Pacific Sebastes rockfishes

The evolution of convergent phenotypes in lineages subject to similar
selective pressures is a common feature of adaptive radiation. In
geographically replicated radiations, repeated convergence occurs between
clades occupying distinct regions or islands. Alternatively, a clade may
repeatedly reach the same adaptive peaks in broadscale sympatry, resulting
in extensive convergence within a region. Rockfish (Sebastes sp.) have
radiated in both the northeast and northwest Pacific, allowing tests of
the extent and geographic pattern of convergence in a marine environment.
We used a suite of phylogenetically informed methods to test for
morphological convergence in rockfish. We examined patterns of faunal
similarity using nearest neighbor distances in morphospace and the
frequency of morphologically similar yet distantly related species pairs.
The extent of convergence both between regions and within the northeast
Pacific exceeds the expectation under a Brownian motion null model,
although constraints on trait space could account for the similarity. We
then used a recently developed method (SURFACE) to identify adaptive peak
shifts in Sebastes evolutionary history. We found that the majority of
convergent peak shifts occur within the northeast Pacific rather than
between regions and that the signal of peak shifts is strongest for traits
related to trophic morphology. Pacific rockfish thus demonstrate a
tendency toward morphological convergence within one of the two broad
geographic regions in which they have diversified.