Tasmania is famous for its distinctive fauna, ranging from the fierce Tasmanian devil to vibrant bird species unique to the region. However, this wildlife now faces significant risks due to the recent discovery of the H5N1 strain of avian influenza in a brown skua found along the north-western coast of the state.
The detection of this virus has prompted authorities to implement a series of protective measures, which include heightened surveillance and a vaccination initiative. Special attention is being given to species that form large colonies, scavenge on carcasses, or are already under threat of extinction, as efforts are made to mitigate mortality rates.
Among the species at risk, the endangered Tasmanian devil, an emblematic animal of the region, is particularly concerning. As scavengers, these marsupials frequently consume the remains of other animals, increasing the likelihood that they may ingest infected birds. However, it remains uncertain whether the virus will affect the devils, according to Rachael Alderman from Tasmania’s Department of Natural Resources and Environment (NRE).
Dr. Alderman expressed the agency’s concerns, stating, “While we are worried about this uncertainty, we are closely monitoring and preparing for potential impacts.” She noted that the introduction of this additional threat could complicate the devils’ long-term survival, although the situation remains unpredictable.
To bolster the population of Tasmanian devils, efforts are underway to enhance captive breeding programs by reducing disease prevalence and increasing genetic diversity. Currently, there is no vaccine for mammals against the H5 strain, but Dr. Alderman indicated that research in this area is ongoing.
Another species facing dire circumstances is the critically endangered orange-bellied parrot, with only 88 individuals recorded in the wild last year. To combat the risks posed by the H5N1 virus, the Tasmanian government is preparing to initiate a vaccination program once it receives approval. This program will target 350 orange-bellied parrots housed in a breeding facility near Hobart.
Deputy Premier Guy Barnett acknowledged the “significant risk” that H5 bird flu poses to the species and stated that the state is committed to taking proactive measures to enhance the chances of survival for these parrots amid a potential outbreak. Additionally, specialized infrastructure will be put in place at the facility to further mitigate disease transmission risks.
Fiona Fraser, Australia’s Threatened Species Commissioner, expressed enthusiasm for the vaccination initiative, noting that while vaccinations alone will not ensure the resilience of species to H5 bird flu, they represent a crucial tool in safeguarding vulnerable populations.
Little penguins, a beloved species along Tasmania’s coasts and nearby islands, are also at risk from the recent H5N1 outbreak. However, due to their stable population numbers and the rigorous conditions necessary for vaccination, they are not currently prioritized for a vaccination program. Dr. Alderman explained that the logistical demands of administering the vaccine and monitoring vaccinated individuals make it impractical for little penguins at this time.
In contrast, authorities in Victoria are organizing a vaccination campaign for 5,000 little penguins on Phillip Island, where the necessary permit requirements can be met. In Tasmania, conservation efforts for little penguins will focus on habitat restoration and pest control.
The impact of the H5 bird flu pandemic has been felt most acutely among wild aquatic birds, with BirdLife Australia’s senior advisor, Sean Dooley, highlighting the importance of Tasmania as a migratory shorebird and seabird habitat. The government has identified several species at heightened risk, including the shy albatross, short-tailed shearwater, and various tern species, all of which may face severe consequences from the virus.
With Albatross Island, a critical breeding ground for shy albatrosses, located just 100 kilometers from where the infected skua was found, there is great concern for the future of these species. Mr. Dooley emphasized the need for ongoing vigilance to not only contain the spread of the virus but also to ensure that Tasmania’s unique wildlife can recover and thrive in the long term.
