Upload
ludlow
View
33
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Biological Control of Boneseed. Boneseed Bio-control Agents Introduced to Australia. Chrysanthemoides tip moth in 1989 Three leaf-feeding beetles during the early 1990s A seed-feeding fly in 1998 Boneseed leafroller in April 2000 Boneseed leaf buckle mite 2008. - PowerPoint PPT Presentation
Citation preview
Biological Control of Boneseed
Boneseed Bio-control Agents Introduced to Australia
• Chrysanthemoides tip moth in 1989
• Three leaf-feeding beetles during the early 1990s
• A seed-feeding fly in 1998
• Boneseed leafroller in April 2000
• Boneseed leaf buckle mite 2008
Boneseed Bio-control Agents Introduced to Australia
• Chrysanthemoides tip moth in 1989
• Three leaf-feeding beetles during the early 1990s
• A seed-feeding fly in 1998
• Boneseed leafroller in April 2000
• Boneseed leaf buckle mite 2008
Boneseed Bio-control Agents Introduced to Australia
• Chrysanthemoides tip moth in 1989
• Three leaf-feeding beetles during the early 1990s
• A seed-feeding fly in 1998
• Boneseed leafroller in April 2000
• Boneseed leaf buckle mite 2008
Boneseed Bio-control Agents Introduced to Australia
• Chrysanthemoides tip moth in 1989
• Three leaf-feeding beetles during the early 1990s
• A seed-feeding fly in 1998
• Boneseed leafroller in April 2000
• Boneseed leaf buckle mite 2008
Boneseed Bio-control Agents Introduced to Australia
• Chrysanthemoides tip moth in 1989
• Three leaf-feeding beetles during the early 1990s
• A seed-feeding fly in 1998
• Boneseed leafroller in April 2000
• Boneseed leaf buckle mite 2008
Bio-control Agent Being Considered for Introduction to Australia
• A rust fungus
• Host-range testing may take two or three more
years to complete
Boneseed Leafroller in NZ
Releases: 2007-2008
• 12,500 Larvae
• 3080 Adults
• 36 Sites
Establishment• North Island: looking fairly promising
• South Island: not recovered after winter
Boneseed rust: Highly promising biocontrol agent
Witches’ broom symptom
Spore containing pustules on leaf
Host-range Testing of the Boneseed Rust
• Began in 2007 in South Africa.
Intracellular vesicle
Penetration point
Basidiospore
Detached leaf assay
Whole plant inoculation trial, to run for 3 years
- needed for witches’ broom symptom development
Stemphyllium/leaf roller synergy? -tip dieback