THE recent discovery of aggressive fire ants at Port Botany could significantly affect Australia's environment and economy, says an invasive species expert.
Chief executive of the Invasive Species Council Andrew Cox said the ants posed a very real risk to the Australian love of outdoor life.
"The bite feels like your skin is on fire and when they bite they swarm and attack any intruder near their nest," he said.
"Even though it is tiny, with multiple bites it could lead to anaphylactic shock especially if you're allergic.
"They have killed 80 people in the US."
The South American ants, described as the "pirhanas of the ant world," were discovered on the outside of a shopping container at Port Botany and the colony has been treated several times with chemicals.
"It is the first time they have been discovered outside of Queensland, so it is pretty significant," Mr Cox said.
"There is a chance they may have already left [in a container or on a truck]".
The first infestation happened in Brisbane in 2001 but it took authorities more than 10 years to notice the colonies, he said.
"If not eradicated, fire ants will devastate wildlife, stop our children from being able to play in grassy areas and cost the economy billions of dollars a year."
He said while prevention was best, surveillance and monitoring were essential to ensure more colonies did not arrive.
"Even if we get on top of the Port Botany outbreak they could still return to Sydney," he said.
"Port Botany is a worrying wake-up call — you only get one go at this, it is so important."
Suspected sightings should be reported to the exotic plant pest hotline, on 1800 084 881.
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