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Biological control of weeds has been conducted since 1902, resulting in over 500 biological control agents being internationally released against nearly 200 weed species in over 90 countries.

Biological control of introduced weeds in the 22 Pacific Island countries and territories (PICTs) began in 1911, with the lantana seed feeding fly introduced into Fiji and New Caledonia form Hawaii. To date, a total of 62 agents have been deliberately introduced into the PICTs to control 21 weed species in 17 countries.