Scientists Identify Potential New Habitats for Critically Endangered Gilbert's Potoroo
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Researchers have used environmental DNA analysis to study the diet of the Gilbert's potoroo, a critically endangered marsupial with fewer than 150 animals left in the wild. The study found dietary overlap with other native mammals, which could help identify suitable new habitats for establishing insurance populations. This work is critical for the species' survival after a 2015 bushfire destroyed 90% of its core habitat.
Facts First
- Fewer than 150 Gilbert's potoroo animals remain in the wild, found only in Western Australia.
- A 2015 bushfire destroyed 90% of the species' core habitat at Two Peoples Bay.
- Scientists used environmental DNA (eDNA) metabarcoding on scat samples to study the potoroo's diet.
- The study found diet overlap between the potoroo and other native mammals like the quokka and quenda.
- Insurance populations have been established on Bald Island and at Waychinicup National Park.
What Happened
Scientists from Edith Cowan University (ECU) and the Department of Biodiversity, Conservation and Attractions (DBCA) investigated the diet of the critically endangered Gilbert's potoroo. They used a non-invasive molecular technique called environmental DNA (eDNA) metabarcoding on scat samples. The research also found dietary overlap among the Gilbert's potoroo, quokka, quenda, and bush rat and noted similar habitat use between the quokka and the potoroo.
Why this Matters to You
This research supports efforts to save the Gilbert's potoroo from extinction. The Gilbert's potoroo contributes to ecosystem health through soil turnover and fungal spore dispersal. Its loss could disrupt these natural processes. Identifying new, safe habitats may be crucial for the species' long-term survival, especially as many Australian mammals are threatened by introduced predators like cats and foxes.
What's Next
The dietary data may help scientists identify suitable new locations for translocating Gilbert's potoroo to create additional insurance populations. The DBCA has already established two such populations on Bald Island and in a fenced enclosure at Waychinicup National Park. Further research could lead to new translocation efforts to secure the species' future.