Department of Natural Resources and Environment Tasmania

Latest Advisories

Subscribing to get Biosecurity Tasmania Advisories is the best way you can keep yourself up-to-date and fully informed about Tasmanian biosecurity issues. Our Advisories cover topics such as changes or proposed changes to Tasmania’s import regulations, animal health and welfare, plant health, forthcoming regulation reviews and opportunities for public comment, new or emerging pest/disease risks and a range of other matters related to Tasmania’s biosecurity.

327 advisories found for Invasive+Species.

Biosecurity Advisory 24/2026 – Supporting industry through long-term management of serpentine leafminer in Tasmania

Serpentine leafminer (Liriomyza huidobrensis; SLM) is an invasive pest of horticulture and vegetable production systems that is now wide-spread on mainland Australia.

SLM was first detected in Tasmania in June 2026. Following this, Biosecurity Tasmania set up a response to explore how best to deal with this pest, with potential options including eradication and long-term management.

There is no health risk to people from SLM and produce damaged by SLM is safe to eat. You should always follow good hygiene practices, including hand washing, when handling and preparing food.

What is happening?

Tasmania is transitioning to long-term management of SLM.

Transition to management (T2M) focuses efforts on providing growers with the advice, tools and support needed to manage this pest in Tasmanian conditions.

Based on current evidence and expert advice, this approach will deliver the best long-term outcomes for growers and the broader industry.

Why is transition to management the best approach for this pest?

Following the detection of SLM in North West Tasmania, Biosecurity Tasmania undertook extensive surveillance, tracing and technical assessments to better understand the extent of the pest in Tasmania.

Based on current evidence, expert advice, and consultation with industry, eradication is not technically feasible because:

Eradication is only possible when a pest is contained and can be effectively treated. SLM can be difficult to detect when numbers are low.
SLM has been found at several locations across North West Tasmania, including sites that have no known connection to each other.
SLM is breeding on unmanaged host weeds. This means it is likely spreading in the environment, making it much harder to contain.
SLM can survive and reproduce on a wide range of crops and common weeds found in Tasmania.
Conditions across Tasmania are very suitable for SLM to establish, survive and spread.
Attempts to eradicate SLM in New South Wales, Victoria and Queensland were unsuccessful. In each case, authorities eventually moved from eradication to long-term management of the pest. This is also the case overseas.
Industry stakeholders have indicated a need for timely decision-making to support business planning and preparedness.

A T2M approach will allow resources to be focused on supporting growers.

What will happen next?

BT will complete its response activities in the next few weeks. Once completed:

Tasmania’s Chief Plant Protection Officer will revoke SLM as Prohibited Matter under the Biosecurity Act 2019. This will be published in the Tasmanian Government Gazette.
There will no longer be a legal requirement to report suspected SLM to Biosecurity Tasmania. Anyone concerned about unusual insect activity or crop damage is still encouraged to contact Biosecurity Tasmania.
Site-specific biosecurity directions issued during the response will be revoked. These were put in place during the response to help control and minimise spread from affected sites.
There will be no ongoing zoning or movement controls for SLM, reflecting a greater emphasis on prevention and shared responsibility. Growers and landholders can play a key role by maintaining good farm biosecurity practices and meeting their obligations under the General Biosecurity Duty, helping to protect agricultural production and reduce the pest's impact.

The transition will be implemented over a 12-month period, with Biosecurity Tasmania, AgriGrowth Tasmania, the Tasmanian Institute of Agriculture (TIA) and industry stakeholders working collaboratively to build industry capability and establish a sustainable long-term management framework.

This will include:

working closely with affected industries;
providing ongoing market access information and support;
support for grower education and extension activities.

Support for growers

SLM is a pest that can be effectively managed.

TIA will lead a research, extension and industry support program to assist growers and affected industries with long-term management of SLM.

This program will include:

Tasmania-specific guidance materials;
webinars and industry briefings;
information on distribution, monitoring and management;
integrated pest management (IPM) advice; and
research to improve understanding of SLM and natural biological control in Tasmania.

Market access

Market access remains a priority. Western Australia is currently the only Australian jurisdiction with specific import requirements for SLM host material.

WA requirements apply to host species with leaves – this includes leafy vegetables, herbs, cut flowers and foliage. Nursery stock must already meet existing import requirements for WA. Growers should check with WA biosecurity authorities prior to exporting to that state.

Biosecurity Tasmania will continue to provide updates and support to industry.

What growers can do to help manage SLM

For most growers, day-to-day farm operations will continue as normal. However, T2M does not reduce the importance of good property biosecurity.

Growers should continue monitoring crops, maintaining good farm biosecurity and managing pests as part of normal farming operations.

Adult leafminers are typically poor fliers, moving only short distances between crops. The main risk for spread is through people moving infested plant material and high-risk inputs (e.g. mulch, fill, growing media etc.).

To reduce the risk of SLM spreading, or being introduced onto their property, growers should:

avoid moving potentially infested plant material;
maintain good farm biosecurity practices;
monitor crops and host plants regularly;
manage host weeds;
clean machinery, equipment, vehicles and boots between properties.

Wellbeing support

Alongside the practical information and support being provided through government, research and industry, wellbeing support is also available.

If you need assistance or support, help is available through organisations such as Rural Alive and Well (RAW - 1800 729 827; www.ruralaliveandwell.com.au), your industry representative body, or other local support services. Reaching out for support is a positive step, and help is always available.

More information

For more information visit the Biosecurity Tasmania website (www.nre.tas.gov.au/SLM) or contact Biosecurity Tasmania on 1300 368 550.

(11/9/2026)
Categories: Cropping; Horticulture; Information for Bass Strait Islands; Invasive Species; Pasture; Plant pests; Policy and Legislation; Seeds;

Biosecurity Advisory 18/2026 - Tasmanian Biosecurity Awards 2026: Nominations Extended

Biosecurity Tasmania has extended the nomination period for the 2026 Tasmanian Biosecurity Awards. If you, your team, business, organisation, community group, or someone that you know, has contributed to supporting and improving biosecurity in Tasmania, you now have until Friday 14 August 2026 to submit a nomination.

There are two award categories:

Tasmanian Community Biosecurity Award
Tasmanian Industry Biosecurity Award

Tasmania's biosecurity success depends on the support of people across our industries and communities. Often working behind the scenes, these individuals and organisations play a vital role in helping to keep our state free from pests, weeds and diseases. The Awards are an opportunity to recognise their contributions and inspire others to play their part in protecting the things that make Tasmania a special place to work, live and play.

To make a nomination, visit www.nre.tas.gov.au/awards by midnight Friday 14 August 2026.

(28/7/2026)
Categories: Animal welfare; Animals (general); Bee Biosecurity; Cropping; Freshwater pests; Gene technology; Horticulture; Information for Bass Strait Islands; Invasive Species; Livestock; Marine pests; Natural environment; Pasture; Plant diseases; Plant pests; Policy and Legislation; Seeds; Timber imports; Wildlife;

Biosecurity Advisory 13/2026 - Nominations for the 2026 Tasmanian Biosecurity Awards are now open

The Tasmanian Biosecurity Awards recognise individuals, organisations or businesses for significant contributions to biosecurity in Tasmania.

This is an opportunity to recognise those in our communities and industries who have gone above and beyond to help protect our future.

Biosecurity is foundational to Tasmania’s economic, cultural and natural values. We all share the benefits of our strong biosecurity system, as it:

underpins our multi-billion-dollar agri-food production and export industries; and
helps to protect our unique flora, fauna and ecosystems that are of immeasurable value to Tasmanians. This includes to our First Nations peoples, the original and ongoing custodians of Land and Sea Country, as well as visitors to our state.

The awards recognise two categories, the Tasmanian Community Biosecurity Award and the Tasmanian Industry Biosecurity Award.

In 2025 the Community Award was won by Lalani Hyatt and the Industry Award by Nathan Saunders from Elders Rural Services Tasmania.

Lalani was recognised for her role in Landcare Tasmania’s Rainbow Lorikeet Management Group. Lalani was recognised for her commitment to the volunteer group and their dedication to the ongoing management of invasive rainbow lorikeets in Tasmania.

Nathan was recognised for his work supporting the Tasmanian livestock industry with new mandatory sheep and goat electronic identification (eID) requirements that came into effect on 1 January 2025.

If you, your team, business, organisation, group, or someone that you know, has contributed to supporting and improving biosecurity in Tasmania, you can submit a nomination today.

Nominations for the 2026 awards will close midnight 31 July 2026.

More information about the awards and the online nomination form can be found at – www.nre.tas.gov.au/tasbiosecurityawards

(12/5/2026)
Categories: Animal welfare; Animals (general); Bird flu; Cropping; Freshwater pests; Gene technology; Horticulture; Information for Bass Strait Islands; Invasive Species; Livestock; Marine pests; Natural environment; Pasture; Plant diseases; Plant pests; Policy and Legislation; Seeds; Timber imports; Wildlife;

Biosecurity Advisory 06/2026 – Commencement of the 2026 Tasmanian calicivirus (RHDV1) release for rabbit control

Rabbits are considered to be Australia’s most significant invasive pest. They impact many landowners, as well as Australia’s threatened species and environments.

Biosecurity Tasmania will be releasing calicivirus (RHDV1) in Autumn 2026 to help Tasmanian landowners manage rabbit populations. Releases will occur in locations where conditions are suitable.

Calicivirus will not be released at locations where there was a previous release in the past 12 months in order to reduce the risk of rabbit populations becoming immune to calicivirus.

A calicivirus release will not eliminate every rabbit at a site. As a result, it is important that land managers employ other rabbit control methods following a knockdown of the rabbit population from a calicivirus release. This will help to both lower numbers as far as possible and prevent reinfestation, reducing the need for repeated control operations.

Calicivirus is not a poison and is specific to rabbits (and hares). There is no risk of calicivirus transferring to other animals or humans.

For more information about calicivirus, how to protect pet rabbits, and calicivirus release sites, visit the Department of Natural Resources and Environment Tasmania website at: https://nre.tas.gov.au/rabbits

Advice about rabbit management and control techniques is available on the NRE Tas European Rabbits webpage, or contact Biosecurity Tasmania at: invasivespecies@nre.tas.gov.au

(13/3/2026)
Categories: Animal welfare; Animals (general); Invasive Species; Natural environment; Pasture; Wildlife;

Biosecurity Advisory 05/2026 – Release of the 'Cat Management in Tasmania – Discussion Paper' for public consultation

The Department of Natural Resources and Environment Tasmania (NRE Tas) has released the Cat Management in Tasmania - Discussion Paper for consultation.

This discussion paper is the first stage in developing a new Tasmanian Cat Management Plan, which will guide cat management across the state for the next five years.

The Discussion Paper includes questions so you can tell us what you would like to see in a new plan.

Submissions must be received by 5pm Friday 15 May 2026.

To read the discussion paper and find out how to have your say, visit: https://nre.tas.gov.au/cat-management

(10/3/2026)
Categories: Animal welfare; Animals (general); Invasive Species; Policy and Legislation; Wildlife; Natural environment;

Biosecurity Advisory 02/2026 - Applying Agricultural Chemicals in Tasmania

Agricultural and veterinary chemicals play an important role in primary production by protecting crops and livestock from unwanted pests, weeds and diseases.

Misuse of chemicals can result in risks to human health, animal health and the environment.

The Agricultural and Veterinary Chemicals (Control of Use) Act 1995 and its supporting legislation sets out the legal requirements for users of agricultural and veterinary chemicals in Tasmania.

There are a number of specific Codes of Practice setting out requirements, guidelines and recommendations for the use and application of agricultural chemical products. Many of these requirements and guidelines are specific to particular types of use, such as ground spraying activities, aerial spraying or spraying in public places.

Codes of Practice

A number of requirements are common to all users. Some of the most important include:

Only using registered agricultural chemical products.
Using products that are the least toxic to people and the environment that can do the job effectively.
Ensuring agricultural chemical products are applied properly by following their label instructions (unless variations have been granted via permit).
Ensuring products are stored in a dry, well-ventilated area not easily accessed by children or animals.
Ensuring spray equipment is in good condition and appropriate protective/safety equipment is used.
Ensuring that all spray equipment and associated machinery is rinsed and washed down after spraying activities.

These are legal requirements and there are penalties for non-compliance.

Commercial operators

In addition, businesses providing a pest, weed or disease control service must hold a Commercial Operator Licence. Employees applying agricultural chemical products must have a Certificate of Competency relevant to the type of work they perform. For details see Licences and Certificates.

Records of spraying operations must be kept, including the date, location and name and rates of any chemical products applied.

If spraying in cropping situations or where produce is intended for consumption, records need to include:

location
date
type and area of crop sprayed
amount and name of chemical applied
application rates
equipment used

Where possible, windspeed, direction and air temperature should also be included.

If you are a commercial grower or producer intending to spray, we encourage you to notify occupiers of properties and buildings within 100 metres of any area to be sprayed however, this is not a mandatory requirement. Notification should be given at least one, but preferably two days in advance. The information you provide should include details of the sprays to be used and the steps that will be taken to minimise drift.

'A person must not carry out or cause to be carried out agricultural spraying which adversely affects any person, plants, stock, agricultural produce, water bodies, groundwater or soil, on premises, or any premises, not owned or occupied by the person carrying out or causing to be carried out the agricultural spraying unless that person has obtained the permission of the owner or occupier of the premises.' (s.30. Damage by spray drift, Agricultural and Veterinary Chemicals (Control of Use) Act 1995)

NOTE – causing damage by spray drift is an offence carrying potential fines of up to $41,000.00. For full details of the requirements specific to your circumstances refer to the relevant Codes of Practice.

(11/2/2026)
Categories: Animal welfare; Animals (general); Cropping; Freshwater pests; Horticulture; Information for Bass Strait Islands; Livestock; Invasive Species; Marine pests; Natural environment; Pasture; Plant diseases; Plant pests; Policy and Legislation; Seeds;

Biosecurity Advisory 36/2025 - Additional Information on changes to Import Requirement 46 - Hosts and Carriers of Tomato Potato Psyllid

The group permit outlining amendments to Import Requirement (IR) 46 for Potential Hosts or Carriers of Tomato Potato Psyllid entering Tasmania came into effect on Monday 8 December 2025. It is available online at https://nre.tas.gov.au/biosecurity-tasmania/the-tasmanian-biosecurity-compendium/group-permits

The new IR includes multiple new treatment options and import pathways for hosts and carriers of tomato potato psyllid (TPP). Hosts include potatoes, tomatoes, capsicums, eggplants, chillies, tamarillos, and sweet potatoes . TPP can also be carried by multiple types of produce with green tops, and nursery stock, plants and cut flowers. A complete list of hosts and carriers can be requested from the Department for businesses that require it.

These changes to IR46 are new and relate to a plant pest that Victorian businesses have not had to previously consider managing, particularly when exporting goods to Tasmania.

To support businesses while adjusting their operational activities to meet the new requirements, Biosecurity Tasmania has implemented a grace period until 22 December 2025. During this time, we will focus on educating and providing advice to businesses that fall short of the new requirements, or if there are any minor discrepancies with the importation process for TPP hosts and carriers. Major or intentional breaches of regulations may still be investigated under relevant legislation.

Businesses must make all reasonable efforts to ensure they comply with the new requirements outlined in the group permit, and failure to meet Tasmanian import requirements may result in penalties under the Biosecurity Act 2019.

TPP is an insect pest that affects crops including potatoes, tomatoes and capsicums. It feeds on other plants too including eggplants chillies, tamarillos, and sweet potatoes. Its feeding can cause plants to become stunted, with curled and yellow leaves.

TPP can also spread a serious disease called Candidatus Liberibacter solanacearum (CLso), which causes “zebra chip” in potatoes. This disease creates dark stripes inside potatoes, making them unmarketable and reducing crop yields. CLso is not currently present in Australia.

To stay informed on any changes to regulation for produce entering Tasmania from Victoria, visit the Department of Natural Resources and Environment webpage.

(11/12/2025)
Categories: Cropping; Horticulture; Invasive Species; Plant diseases; Plant pests; Policy and Legislation;

Biosecurity Advisory 35/2025 - Tomato potato psyllid detections in Victoria

Tomato potato psyllid (TPP) is an insect pest that affects crops including potatoes, tomatoes and capsicums. It feeds on other plants too including eggplants chillies, tamarillos, and sweet potatoes. Its feeding can cause plants to become stunted, with curled and yellow leaves. TPP is established in Western Australia and was detected on the Bellarine Peninsula in Victoria in 2024. In October 2025 it was found in a Melbourne backyard outside of the Bellarine Peninsula Restricted Area.

TPP does not impact food safety and there is no risk to consumers.

This latest detection in Victoria will affect the movement of host and carrier materials between states, including to Tasmania. Due to this, Biosecurity Tasmania will be amending the current import requirements for TPP (Import Requirement (IR) 46 under the Plant Biosecurity Manual Tasmania 2024 edition).

These changes to import requirements will help to minimise the risk of TPP entering Tasmania while still maintaining necessary trade pathways between Tasmanian and Victoria for produce.

Agriculture Victoria is also rapidly implementing required accreditation arrangements to provide confidence in product movements to Tasmania being free of TPP.

The changes we are making to IR46 expand the treatment options available for TPP entering Tasmania and will include:

Methyl bromide fumigation or irradiation for host and carrier produce (fruit and vegetables), cut flowers and nursery stock.
Insecticide and export inspection for host and carrier nursery stock.

These changes will come into effect on 8 December 2025.

These changes to IR46 are new and relate to a plant pest that Victorian businesses have not had to previously consider managing, particularly when exporting goods to Tasmania.

Some commodities may not be as readily available as usual while businesses adapt their processes to meet the new requirements in IR46. This may include imported cut flowers, imported nursery stock, and some imported produce.

We do not anticipate this will impact food availability overall or cause food shortages. However, you may need to seek out alternative shops, businesses or suppliers to source some imported items while Victorian businesses adjust to these changes.

Shops and businesses that stock local or Tasmanian-grown flowers, nursery stock and produce will be unaffected.

The revised IR46 will be established through the issuance of a Group Permit and will be available on our website from 8 December 2025 at www.nre.tas.gov.au/biosecurity-tasmania/the-tasmanian-biosecurity-compendium/group-permits

It is important to note this Group Permit will override the IR46 currently listed in the Plant Biosecurity Manual Tasmania 2024 edition. A new version of the manual with the revised IR46 will be issued in due course.

TPP can also spread a serious disease called Candidatus Liberibacter solanacearum (CLso), which causes “zebra chip" in potatoes. This disease creates dark stripes inside potatoes, making them unmarketable and reducing crop yields. CLso is not currently present in Australia.

Further updates on the TPP detections in Victoria are available on the Agriculture Victoria website.

To stay informed on any changes to regulation for produce entering Tasmania from Victoria, visit the Department of Natural Resources and Environment webpage.

(5/12/2025)
Categories: Cropping; Gene technology; Horticulture; Information for Bass Strait Islands; Invasive Species; Natural environment; Pasture; Plant diseases; Plant pests; Policy and Legislation; Seeds; Timber imports;

Biosecurity Advisory 34/2025 - Beekeeper Request for Hive Monitoring and Reporting

Tasmania remains free of varroa mite. If varroa mite were to establish here, it would have significant impacts on our bee population, pollination services, and honey production.

Early detection is our best defence. Monitoring and reporting by beekeepers is vital because it enables action to be taken while varroa populations are still small and manageable.

What you can do:

Carry out regular monitoring of your hives using alcohol wash, soapy water wash or sugar shake.
Report all results in BeeTAS, even if they are negative.

Why your monitoring matters:

The more beekeepers across Tasmania who regularly monitor and report their findings across Tasmania, the stronger our ability is to detect varroa mite early.
Reporting negative results is important as they provide confidence in Tasmania’s varroa mite-free status.
Reporting negative results also provides critical information to help guide decision-making if varroa mite is ever detected in Tasmania.

BeeTAS also hosts a ‘heatmap’, a visual representation of hive monitoring reports across Tasmania. It maps the number of inspection events in a particular area (rectangular) recorded through BeeTas. Within the area of each rectangle, the inspection location data is anonymous. You can find the heatmap here.

If you need help with monitoring or reporting, please contact the Biosecurity Tasmania Apiary team on Honeybee.Biosecurity@nre.tas.gov.au

Further contact details are available on the varroa mite webpage on the Department of Natural Resources and Environment Tasmania website: Varroa Mite – Biosecurity Tasmania

Thank you for your ongoing support in protecting Tasmania’s bees and apiary-reliant industries.

(25/11/2025)
Categories: Cropping; Horticulture; Invasive Species; Plant pests; Animals (general);

Biosecurity Advisory 31/2025 - Start of Fruit Fly High Risk Season for Tasmania

Spring is here, which means more pressure and risk of fruit flies occurring in fruit from mainland states. Biosecurity Tasmania asks all Tasmanians to keep an eye out for anything unusual in the fruit they buy or grow. The spring and summer months are the peak times for fruit fly activity interstate and a time of increased risk for Tasmania.

Tasmania is fruit fly free, help us keep it that way!

Biosecurity Tasmania has strict controls and ongoing statewide surveillance in place; all aimed at reducing the risk of fruit flies getting into Tasmania. We also rely on the eyes of everyone and ask everybody to report any signs of fruit fly.

Tell-tale signs of fruit fly include live larvae or eggs in the flesh of fruit, or small puncture marks on the skin of fruit. Fruit fly larvae look similar to blowfly maggots and could potentially be found in fruit that you purchased, or from fruit grown in your backyard.

Fruit flies lay eggs in a wide range of fruits and fruiting vegetables.

Remember biosecurity is a shared responsibility, and we all have a general biosecurity duty. Biosecurity Tasmania works closely with mainland states to help manage the fruit fly risk and there are increased resources and inspections taking place at the border for imported fruit fly host produce. However, the risk to Tasmania can never be zero. Therefore industry, government and the community are encouraged to remain vigilant and work together to help protect Tasmania.

Anyone who notices any larvae in fruit is asked to put the fruit in a sealed bag or container, place it in the refrigerator and contact Biosecurity Tasmania on 03 6165 3777. Please DO NOT dispose of any fruit that has larvae present.

More information on fruit fly is at www.nre.tas.gov.au/fruitfly

(7/10/2025)
Categories: Animal welfare; Animals (general); Cropping; Gene technology; Horticulture; Information for Bass Strait Islands; Invasive Species; Natural environment; Plant diseases; Plant pests; Policy and Legislation; Seeds; Timber imports; Wildlife; Bird flu; Freshwater pests; Livestock; Marine pests; Pasture;

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