Reference genome of the Virginia rail, Rallus limicola

Area of Science:

• Genomics
• Ornithology
• Conservation Biology

Background:

• The Virginia rail (Rallus limicola) is a poorly studied wetland bird facing population declines due to habitat loss.
• Despite its game bird status, systematic population data is lacking, hindering effective conservation.

Purpose of the Study:

• To generate the first reference genome assembly for the Virginia rail (Rallus limicola).
• To provide a foundational resource for understanding rail phylogeography, biology, and ecology.
• To support conservation efforts by enabling studies on population connectivity and adaptive evolution.

Main Methods:

• A de novo genome assembly was produced using Pacific Biosciences HiFi long reads.
• Hi-C chromatin-proximity sequencing technology was employed for genome assembly.
• Quality assessment included BUSCO completeness and contig/scaffold N50 metrics.

Main Results:

• The first reference genome assembly for the genus Rallus was successfully generated.
• The assembly spans 1.39 Gb with high contiguity (scaffold N50 of 25.3 Mb).
• High BUSCO completeness (96.9%) indicates excellent genomic resource quality.

Conclusions:

• This genome assembly is a vital tool for resolving evolutionary history and assessing adaptive potential in rails.
• It will facilitate critical conservation research, including quantifying vagility and population connectivity.
• The resource supports informed management strategies for Virginia rail populations facing environmental threats.