Population Genetics and Conservation of Endangered Primates

Endangered primates inhabit fragmented forests and face threats from habitat loss, poaching and climate change. Population genetics provides critical insight into their evolutionary history, levels of genetic diversity and patterns of gene flow, all of which underpin resilience to environmental change. Traditional markers such as microsatellites and mitochondrial DNA have revealed inbreeding, population structure and historical demography, while recent advances in whole-genome sequencing now permit genome-wide assessment of adaptive variation and deleterious mutation load. By integrating genetic data with ecological modelling and field observations, conservation biologists can delineate management units, prioritise corridors to maintain connectivity and inform captive breeding or translocation programmes. This interdisciplinary approach is essential to safeguard the adaptive potential of the world’s rarest apes and monkeys and to secure long-term viability across their natural range.

Research from Nature Portfolio

Genome-wide screening in a flagship colobine has established a standardised set of short tandem repeat markers for non-invasive monitoring. By analysing over one million candidate STRs in the golden snub-nosed monkey genome and validating a panel of polymorphic tetranucleotides in both captive and wild populations, researchers created a reliable genotyping toolkit. This system enables individual identification, paternity testing and estimates of genetic diversity from faecal samples, thereby facilitating long-term genetic surveillance and evidence-based management of breeding programmes.

Population Genetics and Conservation of Endangered Primates publication trend

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

Technical terms

Effective population size: The number of breeding individuals in a population contributing genes to the next generation, which influences the rate of genetic drift.

Microsatellites: Short, tandemly repeated DNA sequences used as polymorphic markers to assess genetic diversity and structure.

Single-nucleotide polymorphism (SNP): A single base-pair variation in the genome, often used in high-throughput genotyping to study adaptive variation and demographic history.

Heterozygosity: The proportion of individuals in a population carrying different alleles at a given locus, indicative of genetic diversity.

Genetic load: The burden of deleterious mutations in a population’s gene pool, which can reduce fitness and adaptive potential.

Management unit: A population segment identified by genetic or demographic criteria that warrants separate conservation planning to preserve unique genetic variation.

References

1. Recent Advances in Genetics and Genomics of Snub-Nosed Monkeys (Rhinopithecus) and Their Implications for Phylogeny, Conservation, and Adaptation. Genes (2023).
2. Genetic structure in the southernmost populations of black-and-gold howler monkeys (Alouatta caraya) and its conservation implications. PLOS ONE (2017).
3. Genetic Structure and Evolutionary History of Rhinopithecus roxellana in Qinling Mountains, Central China. Frontiers in Genetics (2021).
4. Genome-wide screening of microsatellites in golden snub-nosed monkey (Rhinopithecus roxellana), for the development of a standardized genetic marker system. Scientific Reports (2020).