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Modeling body size evolution in Felidae under alternative phylogenetic hypotheses
José Alexandre Felizola Diniz-Filho1, João Carlos Nabout
1Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, GO Brazil.
Genetics and Molecular Biology
|June 4, 2011
Summary
Phylogenetic comparative analyses (CA) reveal body size patterns in Felidae (cats). While phylogeny impacts results, robust analyses can advance even without perfect evolutionary trees.
Area of Science:
- Evolutionary Biology
- Ecology
- Mammalogy
Background:
- Phylogenetic comparative methods (PCMs) have advanced ecological research.
- Molecular data and computational progress drive PCM development.
- Understanding body size evolution requires robust phylogenetic frameworks.
Purpose of the Study:
- To model body size evolution in Felidae using two phylogenies.
- To assess the impact of phylogeny choice on comparative analyses (CA).
- To evaluate the necessity of fully resolved phylogenies for CA.
Main Methods:
- Phylogenetic correlograms and phylogenetic eigenvector regression (PVR) were employed.
- Body size data from 35 Felidae species were analyzed.
- Two alternative phylogenetic hypotheses were utilized for comparison.
Main Results:
- Both phylogenies showed strong phylogenetic patterns in body size.
- Phylogenetic eigenvector regression (PVR) explained 65-67% of body size variation.
- PVR residuals indicated successful explanation of phylogenetic structure.
Conclusions:
- Phylogeny choice influences comparative analyses, underscoring the need for accurate phylogenies.
- Developments in comparative analyses can proceed without perfectly resolved phylogenies.
- Robust phylogenetic comparative methods are crucial for interpreting evolutionary patterns.
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