Study confirms wild dog health risk

Study confirms wild dog health risk

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A wild dog captured wandering in urban bushland near to homes and roadsides. Image supplied by Lana Harriott

A wild dog captured wandering in urban bushland near to homes and roadsides. Image supplied by Lana Harriott

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A new study has found four out of five wild dogs in urban areas carry a range of parasites that pose a risk to public health.

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In the most comprehensive investigation to date, Australian scientists have declared that wild dogs in urban areas carry a range of parasites that pose a risk to public health.

The research, published in the journals Wildlife Research and Australian Mammalogy identifies that four in five wild dogs tested were infected with parasitic worms known as helminths, and over half of wild dogs tested were positive for a hydatid tapeworm known which can cause disease in humans.

if they come in contact with infective eggs which are shed into the environment through wild dog faeces.

Dr Lana Harriott from the Centre for Invasive Species Solutions said the research showed that urban wild dogs should be considered a significant public health threat, as well as a major predation threat to native wildlife.

"Wild dogs can live within 1000 meters of residential houses at all times, and repeatedly cross roads, suburban backyards and frequently utilised public areas such as school yards and parklands," she said.

"Urban areas such as south east Queensland are highly populated and home to more than 3.4 million residents, and this research is prompting new strategies to minimise the risks wild dogs could pose to human and animal health to protect native wildlife, domestic animals and the public."

Dr Harriott's initial research, which was undertaken as part of her PhD supported through the Invasive Animals Cooperative Research Centre, also found that wild dogs preyed heavily on macropod species, such as the swamp wallaby, and this could be a significant reason for seeing such a high occurrence of the hydatid tapeworm within wild dog populations.

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"We analysed the stomach contents of 170 urban wild dogs for prey and then associated this with their known infection status of key zoonotic pathogens," she said.

Scientists process the stomach contents of several urban wild dogs for analysis of parasites including tapeworm and roundworm.

Scientists process the stomach contents of several urban wild dogs for analysis of parasites including tapeworm and roundworm.

"Wild dogs that had adult hydatid tapeworms in their intestinal tracts were significantly more likely to have consumed swamp wallabies."

Dr Harriott said the findings demonstrated the importance of managing the complete tapeworm lifecycle and the important role that wild dog diet plays in the ability for the tapeworm to survive.

In Queensland, the wild dog is a restricted invasive animal under the Biosecurity Act 2014.

Under this Act, everyone has a general biosecurity obligation to take reasonable and practical steps to prevent or minimise the risks associated with all biosecurity matter, including invasive animals, under their control.

"This research improves our understanding of the potential impacts of wild dogs in urban areas so that management strategies and options can be developed for land managers," Dr Harriott said.

"It identifies the importance of protecting domestic dogs from these threats, through ensuring they have regular worming, as well as the importance of personal hygiene particularly for professional wild dog controllers."

The research paper "Zoonotic and economically significant pathogens of peri-urban wild dogs across north-eastern New South Wales and south-eastern Queensland, Australia" can be downloaded through Wildlife Research.

The research paper titled "The association between diet of peri-urban wild dogs and zoonotic pathogen carriage" can be downloaded through Australian Mammalogy.

The story Study confirms wild dog health risk first appeared on Farm Online.

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