Divergence of the Delicate Skink in Eastern Australia
Author Information
Author(s): David G Chapple, Conrad J Hoskin, Stephanie N J Chapple, Michael B Thompson
Primary Institution: Monash University
Hypothesis
How do climatic oscillations and biogeographic barriers affect the evolutionary history of the delicate skink?
Conclusion
The delicate skink is a widespread species with significant genetic variation influenced by dry habitat barriers in eastern Australia.
Supporting Evidence
- Nine genetically distinct clades of the delicate skink were identified.
- The main clades diverged during the late Miocene-Pliocene.
- Phylogeographic breaks correspond to dry habitat barriers.
- Genetic differentiation among clades was statistically significant.
- The study provides the first detailed phylogeographic investigation of this species.
Takeaway
The delicate skink is a type of lizard that lives in wet areas of eastern Australia, and it has different groups that have developed because of dry areas that separate them.
Methodology
The study used mitochondrial DNA sequencing from 238 individuals across 120 populations to analyze genetic diversity and phylogeographic structure.
Limitations
The study may not account for all potential biogeographic barriers and the influence of human-assisted colonization.
Statistical Information
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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