Global Spread of Costly Invader

The polyphagous shot-hole borer, an invasive beetle originating from Southeast Asia, is spreading rapidly across South Africa, threatening urban trees and ecosystems. It bores into trees, introducing a fungus that obstructs water and nutrient flow, leading to tree death within years. Despite efforts to control its spread, including tree removal and research into biological controls, the beetle has caused significant ecological and economic damage, with potential costs exceeding billions of dollars. Scientists emphasize that current responses are limited, and the invasion's full impact remains uncertain as the beetle continues to expand into new regions.

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