Wednesday, 15 April 2020 12:49

International ‘bug superhighway’ threatens Australian environment Featured


An international ‘bug superhighway’ capable of carrying a large variety of environmentally destructive overseas insects into Australia, has been identified in a study led by Monash University.

The study rated the environmental harm being caused by 100 of the worst overseas insect species and recommends a string of actions to keep them out of Australia.

According to Monash, the most dominant group of invasive insects by far are the hymenopteran insects – ants, bees and wasps – making them the world’s most “environmentally harmful invasive insect species”.

“Our report found that environmentally harmful bugs, beetles, ants and moths are most likely to hitch a ride into Australia along an international bug superhighway made up of imported plants, nursery material and the timber trade,” said report author Professor Melodie McGeoch from Monash University.

“Australia is already grappling with large, destructive infestations of invasive insects. It can't afford any more.”

The report identifies the international trade in cut flowers and foliage as a high-risk pathway for more than 70 of the species studied.

Invasive Species Council CEO Andrew Cox said this is the first time Australian and international scientists have comprehensively analysed which invasive insects overseas are doing the most environmental harm and could therefore “threaten Australia’s natural environment if they breach the nation’s borders”.

“Before coronavirus put the world into lockdown there were more than 50,000 merchant ships carrying goods across the globe and some 10,000 planes in the air at any one time,” Cox said.

"Ants, bees and wasps are habitual and versatile world travellers tiny enough to move around the world hidden in goods such as flowers and timber.

"Invasive insects can cost hundreds of millions of dollars to eradicate once they breach international borders. Queensland is already battling red fire ants through a $411 million eradication plan.

"Invasive insects can inflict massive environmental damage. Right now yellow crazy ants threaten Australia’s Wet Tropics World Heritage Area, the oldest continuously surviving tropical rainforests on Earth and the most biologically diverse region in Australia."

The report's 23 recommendations include:

  • Develop risk profiles and contingency plans for all high-risk invasive insect species.
  • Review biosecurity agency practices to detect and kill invasive insects as soon as they breach Australian borders.
  • Impose import conditions to reduce the risks of new invasive insect introductions in the country, especially via unintentional pathways such as contaminated shipping containers.
  • Fully implement Australia’s Invasive Ants Biosecurity Plan and establish a permanent national body to coordinate biosecurity measures on invasive ants.
  • Conduct a comprehensive risk and pathway assessment for other species groups such as animal and plant fungi.
  • Establish a national exotic and invasive species data platform that provides comprehensive, up-to-date information for risk assessments.

Monash University says the federal government has been improving its performance in this area (biosecurity) with the formation of the new Office of Environmental Biosecurity.

“The government has recently developed an invasive ant biosecurity plan (only partly funded) and released a priority list of environmental biosecurity pests (a selection of the worst which only lists 17 insects). Much more work is needed,” Monash concluded.

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Peter Dinham

Peter Dinham - an iTWire treasure is a mentor and coach who volunteers also a writer and much valued founding partner of iTWire. He is a veteran journalist and corporate communications consultant. He has worked as a journalist in all forms of media – newspapers/magazines, radio, television, press agency and now, online – including with the Canberra Times, The Examiner (Tasmania), the ABC and AAP-Reuters. As a freelance journalist he also had articles published in Australian and overseas magazines. He worked in the corporate communications/public relations sector, in-house with an airline, and as a senior executive in Australia of the world’s largest communications consultancy, Burson-Marsteller. He also ran his own communications consultancy and was a co-founder in Australia of the global photographic agency, the Image Bank (now Getty Images).

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