The Northern Australia Quarantine Strategy (NAQS) list of target pests, diseases and weeds includes, but is not limited to:
The NAQS target list
The NAQS surveillance program targets insect pests, diseases and weeds that are:
- considered serious threats to Australia’s agricultural productivity, export markets or the environment; and
- have potential to enter Australia from Timor Leste, Indonesia, Papua New Guinea or other locations via northern Australia by non-conventional pathways (for example, wind-borne or unregulated human-assisted pathways).
Target species are reviewed regularly to ensure NAQS surveillance is risk-based and aligned to national animal and plant health priorities.
How are target species decided?
Species included on the NAQS target list usually meet the following criteria:
1. Probability of entry
There is a reasonable probability of entry of a pest, disease or weed into northern Australia. These include:
- whether the organism is known to be present in locations near to northern Australia
- the method of spread and number of viable arrival pathways to the risk zone (natural or non-conventional transmission or dispersion must be possible)
- known history of international spread and biosecurity concern.
2. Probability of establishment
There is a significant probability of establishment if a pest or disease enters northern Australia. These include:
- the availability of suitable hosts/habitat
- the ecology of the pest, disease or weed
- the likelihood of survival
- cultural practices and control measures likely to impact establishment.
3. Probability of spread after establishment
There should be considerable likelihood of spread after establishment in and beyond northern Australia. This is determined after considering the following :
- suitability of the overall environment for natural spread and hosts
- presence of natural barriers to dispersion
- potential for movement outside of the NAQS surveillance zone via trade, people or natural transmission
- potential vectors of the pest in northern Australia
- potential predators or bio-control species of the particular pest.
4. Potential significant adverse impact
The pest, disease or weed must have the potential to cause a significant impact to:
- the environment, or
- the Australian public.
Details regarding a comprehensive list of NAQS target species may be obtained by contacting
Northern Australia Quarantine Strategy: Weeds Target List
. 3rd edition. ABARES - Brown, L., Johnson H. and Raphael, B. (2008).