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Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis
Published on: August 12, 2019
Phylogenetic inference of reciprocal effects between geographic range evolution and diversification
Emma E Goldberg1, Lesley T Lancaster, Richard H Ree
1Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA. eeg@uic.edu
Systematic Biology
|May 10, 2011
Summary
Species range evolution and phylogenetic tree growth are interconnected. Our new model estimates region-dependent speciation, extinction, and range evolution rates, revealing higher speciation in chaparral than forests.
Area of Science:
- Evolutionary Biology
- Biogeography
- Phylogenetics
Background:
- Geographic range evolution influences species diversification (speciation and extinction).
- Existing models lack reciprocal interactions between range evolution and phylogenetic tree growth.
- Comparative analyses of species distributions are confounded by this limitation.
Purpose of the Study:
- To introduce a new likelihood-based method for estimating region-dependent rates of speciation, extinction, and range evolution.
- To model interdependent processes of range evolution and phylogenetic diversification.
- To analyze habitat occupancy evolution in Californian plant communities.
Main Methods:
- Developed a new model allowing reciprocal interactions between range evolution and phylogenetic diversification.
- Employed a likelihood-based approach for parameter estimation from phylogenetic data.
- Utilized simulation tests to validate parameter recovery for speciation modes and source-sink dynamics.
Main Results:
- The new method accurately recovers parameters in simulation tests.
- Applied to Californian plants, higher speciation rates were found in chaparral compared to forests.
- Evidence suggests expanding habitat tolerances in this plant community.
Conclusions:
- The developed model successfully integrates range evolution with phylogenetic diversification.
- Region-specific speciation and extinction rates can be estimated, accounting for range dynamics.
- The findings highlight ecological differences driving diversification in Californian plant communities.
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