期刊
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 276, 期 1668, 页码 2729-2738出版社
ROYAL SOC
DOI: 10.1098/rspb.2009.0543
关键词
diversification; evolution; morphology; phylogeny; salamanders; speciation
资金
- US National Science Foundation [DEB-0446758, DEB-0824599, EF/-334923]
- Direct For Biological Sciences
- Division Of Environmental Biology [0824599] Funding Source: National Science Foundation
Some major evolutionary theories predict a relationship between rates of proliferation of new species (species diversification) and rates of morphological divergence between them. However, this relationship has not been rigorously tested using phylogeny-based approaches. Here, we test this relationship with morphological and phylogenetic data from 190 species of plethodontid salamanders. Surprisingly, we find that rates of species diversification and morphological evolution are not significantly correlated, such that rapid diversification can occur with little morphological change, and vice versa. We also find that most clades have undergone remarkably similar patterns of morphological evolution (despite extensive sympatry) and that those relatively novel phenotypes are not associated with rapid diversification. Finally, we find a strong relationship between rates of size and shape evolution, which has not been previously tested.
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