South African scientists use bugs in war against water Hyacinth weed

Water hyacinth eating bugs called Megamelus scutellaris are displayed inside a vacuum at the Grootvaly Blesbokspruit wetland reserve, near Springs, in the east of Johannesburg, South Africa/Reuters

JOHANNESBURG: The Hartbeespoort dam in South Africa used to be brimming with people enjoying scenic landscapes and recreational water sports. Now, the visitors are greeted to the sight of boats stuck in a sea of invasive green water hyacinth weed.