Mongabay · Climate & nature

New Genomes for Four Asian Hornbill Species Aid Conservation Efforts

Researchers have generated high-quality reference genomes for four threatened Asian hornbill species, significantly expanding the genomic data available for these birds. This advancement provides crucial tools for understanding their evolutionary history and informing conservation strategies.

Scientists from India's Nature Conservation Foundation and CSIR–Centre for Cellular and Molecular Biology created genetic maps for the great hornbill, rufous-necked hornbill, Malabar pied hornbill, and wreathed hornbill. Previously, whole-genome information was only available for two of the 32 Asian hornbill species.

The study utilized both short- and long-read DNA sequencing to ensure accuracy in the reference genomes. A reference genome serves as a baseline genetic structure for a species, enabling scientists to study evolutionary timelines and species origins.

Statistical modeling revealed that climatic instability during the Pleistocene epoch significantly reduced the effective population sizes of all four species. The wreathed hornbill, being more widely distributed, maintained a larger effective population size compared to the other three.

The availability of these genomes allows for the examination of genetic variation within populations. This genetic diversity is vital for a species' adaptive potential and long-term resilience, offering a foundation for assessing population health and guiding conservation management.

AI-samenvatting op basis van de bron.