HomeHealth & FitnessInvasive Shot-Hole Borer Spreads Beyond Perth Quarantine Zone

Invasive Shot-Hole Borer Spreads Beyond Perth Quarantine Zone

The polyphagous shot-hole borer, a tiny beetle threatening Western Australia’s trees, has been detected in four suburbs outside the Perth quarantine zone. 

This discovery has sparked concerns about the invasive pest spreading further into the state’s forests and potentially reaching eastern states.

Efforts to contain the borer have been the focus of WA’s largest biosecurity operation, costing $41 million. Since its first detection in 2021, over 3,000 trees have been removed in Perth to control the spread. 

However, the recent breach of the quarantine zone, with sightings in Gosnells, Armadale, Kalamunda, and Ellenbrook, has prompted authorities to review the boundary.

The borer, native to South-East Asia, kills trees by boring through trunks and spreading a deadly fungus that blocks the flow of water. The only known treatment is to cut down the infected tree or remove affected limbs.

Local officials and fruit growers are alarmed, particularly as the beetle has previously devastated avocado, mango, and macadamia crops in California. 

Residents are urged to inspect trees on their properties and report any signs of the borer to authorities.

What You Can Do

Check your trees for small holes and discolored wood, and report any suspicious signs to the Department of Primary Industries and Regional Development (DPIRD).

Source abc.net

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