No hybrid snowcocks in the Altai-Hyper-variable markers can be problematic for phylogenetic inference

Area of Science:

• Avian evolutionary biology
• Phylogenetics and genomics
• Ornithology

Background:

• Recent research in Ecology and Evolution proposed hybrid snowcocks (Tetraogallus) and suggested a hybrid origin for the extant species T. altaicus.
• This hypothesis was based on phylogenetic data interpreted as evidence of past hybridization events.

Purpose of the Study:

• To comprehensively re-analyze existing phylogenetic data concerning snowcock hybridization.
• To rigorously test the hypothesis of a hybrid origin for the extant species T. altaicus.

Main Methods:

• Re-analysis of original phylogenetic data used in the prior study.
• Application of robust analytical methods to re-evaluate evidence for hybridization.

Main Results:

• The re-analyses reliably refute the phylogenetic hypothesis of past hybridization in snowcocks.
• No statistically significant evidence supporting a hybridization event in Tetraogallus was found in the available data.

Conclusions:

• The proposed hybrid origin of T. altaicus is not supported by the re-examined data.
• Current data do not provide evidence for hybridization events in the studied snowcock populations.