Genetic Diversity and Population Genetics of Cervids and Waterfowl

Genetic diversity and population genetics underpin our understanding of the evolutionary biology, resilience and management of both cervid and waterfowl species. In cervids—ranging from wild deer to forest musk deer—molecular tools such as mitochondrial DNA sequencing, microsatellite markers and genome-wide SNP arrays have revealed patterns of historic fragmentation, inbreeding, and population bottlenecks. These insights inform reintroduction, breeding and habitat-connectivity programmes. Among waterfowl, high-throughput sequencing and comparative genomics have clarified the domestication history of ducks and the demographic trajectories of geese, demonstrating how gene flow, selection and drift shape adaptive potential. Together, these studies highlight global conservation priorities, guide sustainable harvest and breeding strategies, and facilitate the preservation of genetic resources in a changing landscape.

Research from Nature Portfolio

Recent studies have unveiled high-resolution genomic resources for waterfowl, including chromosome-level assemblies of duck breeds and their wild ancestor, which recover thousands of previously missing genes and reveal over 36 million sequence variants. Comparative population genomics across commercial and wild lineages has elucidated key gene families regulating traits such as adipogenesis and eggshell biomineralisation. These advances underpin our understanding of avian evolution, domestication and adaptive potential in response to environmental and selective pressures, offering a rich foundation for future breeding and conservation efforts.

Genetic Diversity and Population Genetics of Cervids and Waterfowl publication trend

The graph below shows the total number of articles in genetic diversity and population genetics of cervids and waterfowl across all publications each year (not limited to Nature Index journals).

Technical terms

Genetic diversity: The total number of genetic characteristics in the genetic makeup of a species, reflecting variation within and among populations.

Population structure: The organisation of genetic variation across populations, influenced by factors such as gene flow, drift and selection.

Heterozygosity: The proportion of individuals with two different alleles at a given locus, used as an index of genetic variability.

Single-nucleotide polymorphism (SNP): A variation at a single base pair in the genome, widely used as a marker for genetic analysis.

Mitochondrial DNA (mtDNA): Genetic material inherited maternally, often used to trace lineage and historical demography.

Microsatellite marker: Short tandem repeats of DNA, highly polymorphic and useful for assessing population genetic structure and relatedness.

Inbreeding coefficient (FIS): A measure of the probability of two alleles being identical by descent, indicating levels of inbreeding within populations.

References

1. Three chromosome-level duck genome assemblies provide insights into genomic variation during domestication. Nature Communications (2021).
2. mtDNA CR Evidence Indicates High Genetic Diversity of Captive Forest Musk Deer in Shaanxi Province, China. Animals (2023).
3. Discovery of genome-wideSNPs by RAD-seqand the genetic diversity of captive hog deer (Axis porcinus). PLOS ONE (2017).
4. Genetic assessment reveals inbreeding, possible hybridization, and low levels of genetic structure in a declining goose population. Ecology and Evolution (2022).