The history of biological control of skeleton weed in Western Australia

Document Type

Article

Publication Date

8-2024

Conference Title

23rd Australasian Weeds Conference - Breaking the Cycle: Towards Sustainable Weed Mangement

Place of Publication

Brisbane

ISBN

978-0-646-70156-1

Keywords

skeleton weed, Chondrilla juncea, biological control, gall midge, Cystiphora schmidti, rust fungus, Puccinia chondrillina, Western Australia

Disciplines

Weed Science

Abstract

Skeleton weed (Chondrilla juncea L.) biocontrol agents were sent to Western Australia (WA) in the 1970s and 1980s but little monitoring occurred after release. Field surveys of agents present were conducted recently in preparation for the introduction of the skeleton weed gall midge (Cystiphora schmidti Rubsaamen) or other agents that had been released previously in WA or the eastern states of Australia. The surveys found that a rust (Puccinia chondrillina Bubak & P.Syd) was already established in some areas, and the rust was identified as matching one of the originally introduced strains. This paper investigates the history of skeleton weed biocontrol agents in WA and complements work on their current distribution and the skeleton weed biotypes on which they occur, culminating in the release of the gall midge Cystiphora schmidti to strengthen biological control of skeleton weed in Western Australia.

Share

COinS