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Biocontrol introduction

Target pest: Helicoverpa armigera (Lepidoptera: Noctuidae), tomato fruitworm

Agent introduced: Apanteles kazak (Hymenoptera: Braconidae) = Cotesia kazak (Telenga)

Imported: 1977

Import source: Bulgaria and Greece

Released: 1978-1980

Release details: Approximately 3,500 adults or parasitised larvae were released over 30 sites in Northland, Auckland, Bay of Plenty and Gisborne. Redistributed to Marlborough in 1985.

Establishment: Establishment in vicinity of all release sites by 1982 and Marlbourgh in 1987. Spread naturally to Waikato and Hawkes Bay

Impacts on target: Parasitism rates can exceed 60% within a host population and reduction in host larval size has been demonstrated. Not sufficient on its own to eliminate economic damage by H. armigera.

References

Cameron PJ, Hill RL, Bain J and 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.