Summary

The population genetics of moose (Alces alces) integrates insights from historical demography, landscape connectivity and contemporary genetic monitoring. During Pleistocene glacial cycles, moose persisted in distinct refugial areas, giving rise to modern Eurasian and North American lineages. Post-glacial expansions and founder events established subpopulations across boreal forests, alpine zones and temperate wetlands. Contemporary studies reveal that demographic bottlenecks, habitat fragmentation and natural barriers such as mountain ranges or large water bodies shape patterns of genetic diversity and differentiation. Molecular tools—including mitogenome sequencing, microsatellite genotyping and high-throughput single nucleotide polymorphism panels—have unveiled moderate levels of inbreeding in isolated populations, contrasted with substantial gene flow in more continuous ranges. Subspecies boundaries in North America and Europe align broadly with historical colonisation routes, yet hybrid zones at range margins highlight ongoing admixture. Understanding these genomic landscapes is critical for conservation planning, adaptive management and predicting population responses to climate change and anthropogenic pressures.

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Population Genetics of Moose (Alces alces) publication trend

The graph below shows the total number of articles in population genetics of moose (alces alces) across all publications each year (not limited to Nature Index journals).

Technical terms

Single nucleotide polymorphism (SNP): A variation at a single base position in the genome, used as a high-resolution genetic marker.

Microsatellite: Short tandem repeats of nucleotide motifs that exhibit high mutation rates, commonly employed for assessing genetic diversity.

Population bottleneck: A sharp reduction in population size that leads to loss of genetic variation through drift.

Gene flow: The movement of alleles among populations through dispersal and interbreeding.

Haplotype: A group of alleles inherited together from a single parent, often defined by linked genetic markers.

Inbreeding coefficient: A measure of the probability that two alleles at a locus are identical by descent, indicating relatedness within a population.

References

  1. Moose genomes reveal past glacial demography and the origin of modern lineages. BMC Genomics (2020).
  2. Genetic diversity and connectivity of moose (Alces americanus americanus) in eastern North America. Conservation Genetics (2023).
  3. Genome-wide SNP analysis of three moose subspecies at the southern range limit in the contiguous United States. Conservation Genetics (2021).

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