Biocontrol introduction

Target pest: Ageratina adenophora (Asterales: Asteraceae), Mexican devil weed

Agent introduced: Cercospora eupatorii (Capnodiales: Mycosphaerellaceae)

Imported: 1958

Import source: Mexico, via Queensland, Australia

Released: 1958

Release details: Cameron et al. (1989) - probably accidentally introduced with Procecidochares utilis.

Establishment: Cameron et al. (1989) - occurs throughout the range of A. adenophora.

Impacts on target: Cameron et al. (1989) - unknown. Hayes et al. (2013) - Mexican devil weed is not a serious problem today; this can be attributed, at least in part, to biocontrol agents [the gall fly Procecidochares utilis was deliberately released, the fungi C. eupatorii and Passalora ageratinae were probably accidentally introduced with it].

References

Cameron PJ, Hill RL, Bain J, Thomas WP (1989). A Review of Biological Control of Invertebrate Pests and Weeds in New Zealand 1874-1987. Technical Communication No 10. CAB International Institute of Biological Control. DSIR Entomology Division. 424p.

Hayes L, Fowler SV, Paynter Q, Groenteman R, Peterson P, Dodd S, Bellgard S (2013). Biocontrol of weeds: achievements to date and future outlook. In: Dymond JR (ed) Ecosystem services in New Zealand: conditions and trends. Manaaki Whenua Press, Lincoln, pp 375-385 https://www.landcareresearch.co.nz/__data/assets/pdf_file/0005/77054/2_8_Hayes.pdf