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Biological Control of Boneseed

Explore the successful introduction of bio-control agents for boneseed pest management in Australia, including leaf-feeding beetles, seed-feeding flies, leafrollers, and more. Discover the progress and promising results of bio-control methods such as the boneseed rust fungus and leafroller releases in NZ. Learn about ongoing host-range testing, establishment efforts, and the potential synergy between Stemphyllium and leaf roller for improved boneseed control.

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Biological Control of Boneseed

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  1. Biological Control of Boneseed

  2. Boneseed Bio-control Agents Introduced to Australia • Chrysanthemoides tip mothin 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

  3. Boneseed Bio-control Agents Introduced to Australia • Chrysanthemoides tip mothin 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

  4. Boneseed Bio-control Agents Introduced to Australia • Chrysanthemoides tip mothin 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

  5. Boneseed Bio-control Agents Introduced to Australia • Chrysanthemoides tip mothin 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

  6. Boneseed Bio-control Agents Introduced to Australia • Chrysanthemoides tip mothin 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

  7. Bio-control Agent Being Considered for Introduction to Australia A rust fungus Host-range testing may take two or three more years to complete

  8. 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

  9. Boneseed rust: Highly promising biocontrol agent Spore containing pustules on leaf Witches’ broom symptom

  10. Host-range Testing of the Boneseed Rust • Began in 2007 in South Africa. Detached leaf assay Penetration point Basidiospore Intracellular vesicle

  11. Whole plant inoculation trial, to run for 3 years - needed for witches’ broom symptom development

  12. Stemphyllium/leaf roller synergy? -tip dieback

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