It takes a village: community-enabled release and monitoring of classical biocontrol agents for environmental weeds | Caroline Delaisse
Tracks
Tuesday, August 5, 2025 |
1:30 PM - 1:50 PM |
Miconia Room |
Speaker
Ms Caroline Delaisse
Research Officer
CSIRO
It takes a village: community-enabled release and monitoring of classical biocontrol agents for environmental weeds | Caroline Delaisse
Abstract
The expanding availability of classical biocontrol agents, facilitated by collaborative release programs between researchers, biosecurity officers, and community stakeholders, offers significant potential for widespread weed control across Australia. This presentation examines two successful biocontrol release programs: (a) the ongoing deployment of Puccinia rapipes against African boxthorn (Lycium ferocissimum, a Weed of National Significance) in New South Wales, and (b) the completed release of Venturia paralias for sea spurge (Euphorbia paralias) in Victoria and Tasmania. We will detail the entire process, from initial community engagement to managing community-led releases and monitoring the establishment of the fungal agents. As a result of the Venturia paralias release program, the biocontrol agent was successfully established at 61% of release sites, with signs of spread in all regions, largely due to community involvement at sites inaccessible to researchers. These insights will inform and improve future community-driven biocontrol programs, enhancing the success of fungal agent establishment. Finally, we will outline opportunities for community members to partner with CSIRO in 2026 to release and monitor Puccinia rapipes in NSW.
Biography
Caroline is a senior research officer with the CSIRO, based in Canberra, ACT. She completed her conservation biology and botany studies in Western Australia, however has drifted into the classical biological control space, and directed her focus onto fungal pathogens. Currently, she primarily works on fungal biocontrol agents for the control of various weed species across eastern Australia.
