Azolla weevil: 100 years of Azolla biocontrol in the UK
Azolla filiculoides is also known as floating water fern or fairy fern. It is a small, aquatic, free-floating fern native to the warm temperate, and tropical regions of the Americas. The species has been introduced around the globe: to Australia, New Zealand, the Caribbean, Hawaii, North and sub-Saharan Africa and Europe. It was first suspected…
Floating pennywort weevil: feasting to control one of the UK’s most invasive aquatic plants
The floating pennywort weevil (Listronotus elongatus) is the latest biological control method to combat the highly invasive aquatic plant, floating pennywort (Hydrocotyle ranunculoides). CABI’s most recent biological control project, the first small-scale releases of the weevil occurred in late 2021, with a national release and monitoring programme launched in 2022.