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Kiwifruit's most unwanted

Kiwifruit's most unwanted

There are eight organisms identified as the biggest biosecurity threat to New Zealand's kiwifruit industry.

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 Kiwifruit's most unwanted

Kiwifruit's most unwanted

Fruit flies

Fruit flies are the kiwifruit industry's most unwanted biosecurity threat. Any incursion can severely impact where we sell our fruit. The high risk period for fruit flies is September to June.

The Queensland Fruit Fly (QFF), native to Australia (our closest neighbour), is considered to be the greatest threat and has the most market impacts.

The financial impact of a fruit fly incursion to New Zealand’s kiwifruit industry is estimated to be between $2 million and $430 million. KVH has produced a short report summarising the financial impacts of different incursion scenarios based on previous fruit fly incursions in New Zealand and overseas and economic modelling by Underwood (2007).

Threat Levels
Likelihood of entry
Medium
Likelihood of establishment
Medium
Production impacts
High
Market access impacts
Very Low

Pest ranking based on the KVH risk matrix

View risk matrix

KVH has developed a guide for growers that details the likely sequence of events if a fruit fly response was to occur in a kiwifruit growing region.

Plant & Food Research have been granted permission to import sterile QFF into a New Zealand containment facility to develop new attractants for female and male flies.

This long-term project will determine what the flies can smell and whether the odours can be used to improve the sensitivity of traps or increase the numbers of flies lured in. Three approaches are being used; odours based on host fruit, sex pheromones and bacteria.

This research is part of a larger collaborative approach with Australian organisations to manage and eradicate QFF populations. 

Supporting this is a Sterile Insect Technique (SIT) facility that can produce 50 million sterile QFF per week as an eradication tool for release in Australia or New Zealand should an established population ever become large enough for this to be required. Read more about the project here.

KVH supports these research activities as an integral component of our readiness activities for the industry’s most unwanted biosecurity threat.


Further fruit fly resources

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LATEST NEWS

20 Dec 2024

KVH Christmas hours 2024-25

Merry Christmas from the KVH team. We wish you a safe and relaxing holiday period with your loved ones. The KVH office will be closed from Monday 23 December 2024 and will reopen at 8.30am on Monday 6 January 2025. If any urgent issues arise during this period, please feel free to get in touch by email or report unusual pest or disease symptoms on kiwifruit or vines online here. We will be regularly monitoring these channels and will respond as soon as possible. For urgent reporting of any unusual pests or diseases, the Biosecurity New Zealand hotline (0800 80 99 66) operates 24/7 over the holidays as per usual.

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13 Dec 2024

Our Biosecurity Act submission is available now

KVH’s submission on proposed amendments to the Biosecurity Act (as completed and submitted on Friday 13 December) can be read here. The Ministry for Primary Industries (MPI) is leading the review consultation process and our comprehensive submission on behalf of the kiwifruit industry addresses most of the proposed changes, as these have a bearing on how the biosecurity system will operate in the future. Significant areas for our sector that we have commented on relate to funding and compensation, readiness and response, and long-term management. MPI will now analyse submissions, publish a summary, and make recommendations to the Minister for Biosecurity. It is anticipated Cabinet will consider final policy proposals in 2025. Thank you to those who have discussed the submission with us. We welcome any further questions or feedback about the process at info@kvh.org.nz. Visit the MPI Biosecurity Act review webpage for detailed proposed amendments information Read more about how we developed our submission

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02 Dec 2024

KVH Biosecurity Act draft submission

In the last Bulletin we mentioned the consultation underway on several proposed amendments to the Biosecurity Act 1993. Our draft submission is now available to view here. We welcome the opportunity for further discussion so please do get in touch at info@kvh.org.nz by 13 December when the submission is due if you have questions. The consultation and our submission have been part of our presentation at the recent Grower Roadshows too, and we thank those of you who have already spoken with us about it. The Ministry for Primary Industries (MPI) is leading this process and our comprehensive submission on behalf of the kiwifruit industry will address most of the proposed changes, as these have a bearing on how the biosecurity system will operate in the future. Some of the proposals are significant to our sector, particularly those in the sections about funding and compensation, readiness and response, and long-term management.

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