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In Brief

Anastatus is an egg parasitoid of spotting bugs and is now being massed reared in high enough quantities to begin field trials on a commercial scale. The testing of biocontrol agents for fruit spotting bugs is a challenging task. Bugs breed outside crops and bug eggs are hard to find. We therefore need to run a series of case studies and monitor any changes in bug activity, damage and yield to the crop over a number of years. We also want to observe any changes in management practices. See "Background" for more details.

The aims of this biological control work are:

• To increase the amount of natural enemy activity against spotting bugs (good biocontrol activity creates a buffer in the system giving morte time to make spray decisions)

• To reduce dependancy on chemical controls (options are very limited and any new products are likely to be expensive).

• To reduce the frequency of spraying while maintaining yield and quality.

• To move from whole block spraying to spot spraying where practical.

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PO Box 578, Samford Qld 4520
email: info@bioresources.com.au

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FSB nymph - about 3 weeks old

FSB adult

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Anastatus egg parasitoid laying its egg into a FSB egg.

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Parasitised FSB eggs with Anastatus wasps about to emerge.