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Rescue and Return: saving a semi-wild platypus population during the 2019 drought - Dr Tahneal Hawke

Tuesday, November 14, 2023
10:50 AM - 11:00 AM
Sirius / Pleiades Room, Esplanade Hotel Fremantle

Speaker

Dr Tahneal Hawke
Postdoc
University of New South Wales

Rescue and Return: saving a semi-wild platypus population during the 2019 drought

Abstract

From 2017-2019, eastern Australia faced an extreme drought, marked by significantly reduced water levels in rivers and high temperatures. Platypuses (Ornithorhynchus anatinus) are a semi-aquatic mammal dependent on rivers and streams for their feeding and breeding. This period witnessed numerous reports of deceased platypuses, and platypuses stranded in drying waterbodies, but limited intervention was possible. The Platypus Conservation Initiative, Taronga Conservation Society, and the ACT Government collaborated to capture and transport a semi-wild population of platypuses from Tidbinbilla Nature Reserve, which were stranded in drying pools due to inoperational flood gates. Seven individuals were rescued and transported to Taronga Zoo for temporary housing, five of which were successfully reintroduced to Tidbinbilla after more than five months in captivity. Implanted acoustic transmitters facilitated monitoring of the reintroduced platypuses for up to a year post-release, demonstrating successful repatriation following their time in captivity. This presentation will outline the methodologies and outcomes associated with the capture, transport, temporary housing, and reintroduction of these platypuses, providing crucial insights for researchers and organisations that may need to execute similar rescue interventions in the future. As an important case study for drought intervention in platypuses, this research takes on increasing significance in light of the intensifying frequency and severity of droughts, and other significant weather events likely to impact populations across the species range. Translocations are likely to become an essential management strategy, with Taronga Conservation Society developing purpose-built facilities for future rescue efforts, aiding to improve the conservation of this iconic Australian animal.

Biography

Dr. Tahneal Hawke is a conservation biologist specializing in aquatic ecology and the protection of endangered species. She earned her PhD in Wildlife Conservation from UNSW, Sydney, with a focus on the iconic platypus. Dr. Hawke's research spans population dynamics, habitat use, and threats to freshwater ecosystems.
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