Alligator weed-eating leaf beetles were brought to China in the early 1990s and are now bred in greenhouses. Photo: Alamy

How China is breeding a beetle army to defend the Three Gorges Dam from plant invasion

  • Scientists learn from successful use of the insect in the US to tackle plant pest that arrived with Japanese occupation
  • Today, voracious eaters are raised in greenhouses over winter and released in spring
Topic |   China science

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Alligator weed-eating leaf beetles were brought to China in the early 1990s and are now bred in greenhouses. Photo: Alamy
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