期刊
ECOLOGY LETTERS
卷 21, 期 3, 页码 402-410出版社
WILEY
DOI: 10.1111/ele.12911
关键词
Bayesian phylogenetic mixed models; macroevolution; Noctilionoidea; path-wise rates; specialisation; speciation; trophic level; variable-rates model
类别
资金
- National Science Foundation [DEB-0949759, DEB-1442142, 1531492]
- Foundation for Science and Technology, Portugal [SFRH/BPD/97707/2013]
- Portuguese Foundation for Science and Technology [UID/AMB/50017]
- Portuguese Foundation for Science and Technology through FEDER funds [UID/AMB/50017]
- Direct For Biological Sciences [1442142, 1442314] Funding Source: National Science Foundation
The role of trophic specialisation in taxonomic diversification remains unclear. Plant specialists diversify faster than omnivores and animalivores, but at shorter macroevolutionary scales this pattern sometimes reverses. Here, we estimate the effect of diet diversification on speciation rates in noctilionoid bats, controlling for tree shape, rate heterogeneity and macroevolutionary regimes. We hypothesise that niche subdivision among herbivores positively relates to speciation rates, differing between macroevolutionary regimes. We found the rate at which new herbivorous lineages originate decreases as rates of diet evolution increase. Herbivores experience higher speciation rates, but generalist herbivores and predominantly herbivorous omnivores speciate faster than specialised herbivores, omnivores and animalivores. Generalised herbivory is not a dead end. We show that analysing ecological traits and diversification requires accounting for macroevolutionary regimes and within- and between-clade variation in evolutionary rates. Our approach overcomes the high false-positive rates of other methods and illuminates the roles of herbivory and specialisation in speciation.
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