The Economic Times

In 2001, USDA researchers released salvinia weevils in Texas and Louisiana; by 2003, weed cover had fallen near release sites while untreated controls stayed choked

A tiny weevil has proven to be a powerful ally in the battle against giant salvinia, an invasive aquatic weed. Tested in Texas and Louisiana, the weevils significantly decreased the weed's spread by feeding exclusively on it. Researchers found that these resilient creatures can withstand harsh winter conditions in lakes, highlighting the potential of biological control methods for managing troublesome invasive species.