Phylogeny of the Drosophila obscura species group
Author Information
Author(s): Gao Jian-jun, Watabe Hide-aki, Aotsuka Tadashi, Pang Jun-feng, Zhang Ya-ping
Primary Institution: Yunnan University
Hypothesis
Can the phylogeny of the Drosophila obscura species group be reconstructed using sequence data from multiple loci?
Conclusion
The obscura group began to diversify rapidly before invading into the New World, with certain subgroups forming a monophyletic cluster.
Supporting Evidence
- Phylogenetic analyses indicate that each of the subobscura, sinobscura, affinis, and pseudoobscura subgroups is monophyletic.
- The obscura subgroup is paraphyletic.
- Divergence times suggest that at least half of the current major lineages of the obscura group originated by the mid-Miocene time.
Takeaway
Scientists studied a group of fruit flies to understand how they evolved and found that they started to change a long time ago before moving to new places.
Methodology
The study used nucleotide sequences from six loci of 21 Drosophila species to reconstruct phylogeny and estimate divergence times.
Potential Biases
Potential bias due to the historical 'rapid radiation' of the obscura group.
Limitations
The study's results may be influenced by the limited taxon sampling from the Old World.
Participant Demographics
The study included 21 species from the Drosophila obscura group, primarily from the Old World.
Statistical Information
P-Value
p<0.0004
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website