PhD Studentship: Historical Genomics of the Declining Red Squirrel in Britain

Primary supervisor -Dr Anders Bergstrm

The red squirrel in Britain has been under heavy pressure for centuries, particularly so after the introduction of the invasive grey squirrel in the late 1800s, and is now extinct in most of its former range. But already since the late 1700s, people have tried to counter the decline by bringing in new red squirrels from continental Europe, representing a long-running, semi-natural experiment in genetic rescue. What effects this complex history of decline and rescue has had on the genetic make-up, fitness and ancestry of British squirrels is unknown.

This project will aim to answer this, by sequencing whole genomes from the few surviving British red squirrel populations, and continental reference populations. It will also sequence historical British squirrel genomes from museum collections, to track changes in genetic diversity, inbreeding and genetic load directly over time, and how the influx of new genetic material has shaped these parameters. The project will also address how much native British squirrel ancestry persists today, versus how much has been replaced as a by-product of the many introductions. By understanding the complex past of this iconic species, we can hopefully also contribute to better safeguarding its future.

The student will receive broad training in molecular biology, historical DNA, genomics, bioinformatics and population genetics. The student will take part in journal clubs and departmental seminars, present their work at conferences, and develop skills in critical thinking and science communication.

The ideal candidate will have a background in a biological science (e.g. genetics, molecular biology, zoology, evolution), and have strong interests in genomics, data analysis and evolution.

Entry requirements

The standard minimum entry requirement is 2:1 in Biology, Genetics, Zoology, Ecology, Biochemistry, Archaeology.

Mode of study

Full-time

Start date

1 October 2026

Funding

This PhD project is in a competition for a Faculty of Science funded studentship.Funding is available to UK applicants and comprises home tuition fees and an annual stipend for 3 years.

Closing Date

10/12/2025

To apply for this role, please click on the 'Apply' button above.

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