Hear, hear: the convergent evolution of echolocation in bats?

Area of Science:

• Evolutionary biology
• Molecular biology
• Bioacoustics

Background:

• The evolution of laryngeal echolocation in bats is poorly understood.
• Molecular mechanisms underlying bat echolocation remain largely unknown.
• The Prestin gene is known for its role in mammalian hearing.

Purpose of the Study:

• To investigate the molecular basis of echolocation in bats.
• To identify genes involved in the evolution of bat echolocation.
• To examine the evolutionary history of the Prestin gene in echolocating bats.

Main Methods:

• Gene sequencing of Prestin in various bat species.
• Phylogenetic analyses to reconstruct evolutionary history.
• Tests for positive selection on the Prestin gene.

Main Results:

• The Prestin gene was identified and sequenced in echolocating bats.
• Phylogenetic analyses indicated positive selection acting on Prestin in echolocating lineages.
• Evidence supports the convergent evolution of laryngeal echolocation.

Conclusions:

• The Prestin gene played a role in the evolution of bat echolocation.
• Convergent evolution of echolocation is supported by Prestin gene evolution.
• This study provides molecular insights into a key sensory adaptation.