DOI: 10.5061/dryad.5jt5j
title: Data from: Diversity and disparity through time in the adaptive radiation of Antarctic notothenioid fishes

description: According to theory, adaptive radiation is triggered by ecological
 opportunity that can arise through the colonization of new habitats, the
 extinction of antagonists or the origin of key innovations. In the course
 of an adaptive radiation, diversification and morphological evolution are
 expected to slow down after an initial phase of rapid adaptation to vacant
 ecological niches, followed by speciation. Such ‘early bursts’ of
 diversification are thought to occur because niche space becomes
 increasingly filled over time. The diversification of Antarctic
 notothenioid fishes into over 120 species has become one of the prime
 examples of adaptive radiation in the marine realm and has likely been
 triggered by an evolutionary key innovation in the form of the emergence
 of antifreeze glycoproteins. Here, we test, using a novel time-calibrated
 phylogeny of 49 species and five traits that characterize notothenioid
 body size and shape as well as buoyancy adaptations and habitat
 preferences, whether the notothenioid adaptive radiation is compatible
 with an early burst scenario. Extensive Bayesian model comparison shows
 that phylogenetic age estimates are highly dependent on model choice and
 that models with unlinked gene trees are generally better supported and
 result in younger age estimates. We find strong evidence for elevated
 diversification rates in Antarctic notothenioids compared to outgroups,
 yet no sign of rate heterogeneity in the course of the radiation, except
 that the notothenioid family Artedidraconidae appears to show secondarily
 elevated diversification rates. We further observe an early burst in
 trophic morphology, suggesting that the notothenioid radiation proceeds in
 stages similar to other prominent examples of adaptive radiation.
description: BEAST XML file for model
 1This
 BEAST XML file specifies model 1 for Bayesian species tree inference (see
 Supplementary Table 4)Model01.xmlBEAST XML file for model 2This BEAST XML file specifies model 2 for Bayesian species tree inference (see Supplementary Table 4)Model02.xmlBEAST XML file for model 3This BEAST XML file specifies model 3 for Bayesian species tree inference (see Supplementary Table 4)Model03.xmlBEAST XML file for model 4This BEAST XML file specifies model 4 for Bayesian species tree inference (see Supplementary Table 4)Model04.xmlBEAST XML file for model 5This BEAST XML file specifies model 5 for Bayesian species tree inference (see Supplementary Table 4)Model05.xmlBEAST XML file for model 6This BEAST XML file specifies model 6 for Bayesian species tree inference (see Supplementary Table 4)Model06.xmlBEAST XML file for model 7This BEAST XML file specifies model 7 for Bayesian species tree inference (see Supplementary Table 4)Model07.xmlBEAST XML file for model 8This BEAST XML file specifies model 8 for Bayesian species tree inference (see Supplementary Table 4)Model08.xmlBEAST XML file for model 9This BEAST XML file specifies model 9 for Bayesian species tree inference (see Supplementary Table 4)Model09.xmlBEAST XML file for model 10This BEAST XML file specifies model 10 for Bayesian species tree inference (see Supplementary Table 4)Model10.xmlBEAST XML file for model 11This BEAST XML file specifies model 11 for Bayesian species tree inference (see Supplementary Table 4)Model11.xmlBEAST XML file for model 12This BEAST XML file specifies model 12 for Bayesian species tree inference (see Supplementary Table 4)Model12.xmlSet of 100 species treesThis tree set contains 100 species trees randomly sampled from the posterior distribution of the BEAST analysis based on model 12Model12_100.treesSet of 1000 species treesThis tree set contains 1000 species trees randomly sampled from the posterior distribution of the BEAST analysis based on model 12Model12_1000.trees