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After 20 Years, Rangers Finally Booted These Pesky Ants From an Australian Island

Unbeknownst to 16th-century Spanish sailors, the dirt stabilizing their ships carried tiny stowaways: tropical fire ants. These ants sailed the Pacific, colonizing new lands with Europeans for centuries.

Nadia Kowalski
Nadia Kowalski
·1 min read·Australia·3 views

Originally reported by Mongabay · Rewritten for clarity and brevity by Brightcast

Picture this: 16th-century Spanish sailors, probably worried about scurvy and sea monsters, unknowingly brought tiny, aggressive stowaways across the Pacific. They used dirt as ship ballast, and tropical fire ants — Solenopsis geminata, if you're fancy — came along for the ride. Fast forward a few centuries, and these ants had spread with European colonization, becoming an unwelcome fixture in new lands.

Cut to the early 2000s, and these little terrors turned up on Melville Island, part of Australia's Tiwi Islands archipelago. They didn't just visit; they moved in, took over, and started redecorating. Stanley Tipungwuti, a Tiwi Island ranger, put it plainly: these ants were eating small mammals and potentially stopping birds from nesting. Basically, they were ecological bullies.

Article illustration

Now, after two decades of relentless effort, the Tiwi Ranger team has officially kicked the tropical fire ants off Melville Island. In 2025, the island was declared completely ant-free. That's a 20-year commitment to a tiny, stinging problem, and it finally paid off. Ben Hoffmann, who was there from the beginning of the eradication program, confirmed the sweet victory.

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To add a cherry on top of this ant-free sundae, the Tiwi Island Rangers snagged the Territory Indigenous Natural Resource Management Award in Darwin for their monumental efforts. Because apparently, saving an entire island from a microscopic invasion deserves some serious hardware. Let that satisfying, ant-free number sink in.

Brightcast Impact Score (BIS)

This article celebrates the successful eradication of an invasive species, a clear positive action with significant environmental benefits. The eradication is a notable achievement with strong evidence and a lasting impact on the island's ecosystem. The story is inspiring due to the dedication of the Tiwi Rangers.

Hope31/40

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Reach23/30

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Verification21/30

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Significant
75/100

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Sources: Mongabay

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