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Widespread invasive species control is a risky business

In 1977, on the islands of French Polynesia, government authorities released a predatory snail. They hoped this introduction would effectively control another species of invasive snail, previously introduced to supply escargot. Instead, by the early 1980s, scientists reported alarming declines of native snail populations. Within 10 years, 48 native snail species (genus Partula) had been […]