Exotic Coleoptera and Lepidoptera are biosecurity threats to New Zealand pasture species

Sarah Clark *1, Sandy Toy 2

1 Ministry for Primary Industries, Pastoral House, 25 The Terrace,, PO Box 2526, Wellington 6140, New Zealand
2 Consultant Researcher

The biosecurity threats to New Zealand’s priority pasture species are not well understood.  There is currently a lack of understanding of which exotic pests are a threat to New Zealand pasture species, what the likely impact of their establishment in New Zealand would be, and what the potential pathways of introduction are.  As a starting point in addressing this knowledge gap, a modified ‘hazard identification’ methodology was used to create a list of some of the biosecurity hazards for New Zealand’s priority pasture species.  Likely pathways of entry into New Zealand were also identified.  The hazards were grouped into high and low hazard groups according to their potential to establish in New Zealand and potential impact to the pastoral sector. The vast majority of the ‘high’ hazard pests are arthropods, particularly Coleoptera and Lepidoptera.  This work was co-funded by the Ministry for Primary Industries and the pastoral sector organisations Beef+Lamb NZ, DairyNZ, with in-kind contributions from Deer Industry New Zealand and Dairy Companies Association of New Zealand.

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