Abalone disease

Abalone Viral Ganglioneuritis (AVG) is a viral disease which affects abalone. The result is the curling of the foot and swelling of the mouth, and leads to weakness and death of abalone.

AVG has no known effects on human health.

Coronavirus update

Keep up to date with all the latest circuit breaker restrictions and requirements at coronavirus.vic.gov.au.

Abalone virus detections

There is a current outbreak of AVG in the Portland area. Please avoid diving, hoop netting, fishing with a weighted line and anchoring your boat in the area shaded below. A Fisheries Notice is also in place which prevents abalone meat being used as bait or gut or shell being thrown into the ocean.

Please see the Victorian Fisheries Authority website for more information.

Abalone viral ganglioneuritis is a notifiable disease. If you see multiple sick abalone please call the Emergency Animal Disease watch hotline on 1800 675 888.

Abalone detections area map. Detections of infected abalone have been found within the waters spanning from about a kilometre west of Cape Bridgewater Lookout to Nelson Bay in the east.

A control order restricting fishing, diving, snorkelling and boating in the Portland area has been lifted. The Control Area spanned from about a kilometre west of Cape Bridgewater Lookout to Cape Grant area in the east. The map above shows the area where infected abalone were detected during the recent outbreak. The shaded area includes a five-kilometre buffer from the positive test site. Please avoid diving, hoop netting, fishing with a weighted line and anchoring your boat in this area.

There has been no virus detected on any Victorian abalone farm. A Fisheries Notice sets an Aquaculture protection zone in place within 500m around the Yumbah facility. No fishing, boating, or diving is permitted in this area as shown in the map below.

Narrawong protection area

Factsheets

Factsheets about abalone disease are available on the Victorian Fisheries Authority website in English, Chinese and Vietnamese.

Other information

For the latest information from New South Wales visit the DPI NSW website.

For the latest information from South Australia, including restrictions on abalone movements, visit the PIRSA website.

For an overview of the national situation visit the Outbreak website.

How to reduce the spread of abalone disease

Check: all vessels, fishing, diving and surfing equipment and remove anything including, water, sand or seaweed. Check your catch for signs of illness.

Clean: boats at home or at a commercial car wash. Wash your wetsuits, fishing and diving equipment with fresh, soapy water.

Dry: all boating, fishing and diving equipment completely before heading out into the water again.

You must not use abalone as bait or throw abalone shell or gut into the ocean.

Wetsuits, gloves and other diving equipment in a tub of soapy water.

Presence and spread

The disease, which is caused by a herpesvirus, was first detected in Victoria in December 2005. Before the detections in 2021, the last recorded instance of disease in Victoria was in January 2010 at Cape Otway.

The highest risk of spread is through the water from infected abalone or abalone product (offal, shells or mucus). There is also a risk of it spreading through fishing equipment (including wetsuits, anchors, rock lobster pots and ropes) and by people who have come into contact with infected abalone.

The disease can cause high mortalities in both farmed and wild abalone populations. To date, species known to be susceptible to AVG in Australia are greenlip abalone (Haliotis laevigata), blacklip abalone (Haliotis rubra) and hybrids of these two species.

AVG is a notifiable disease. If any divers suspect AVG in abalone, please report it immediately to the 24-hour Emergency Animal Disease Watch Hotline on 1800 675 888.

Symptoms of AVG

In wild abalone in Victoria, many abalone may die so usually only shells will be seen on the ocean floor as other fish will eat the abalone quickly.

If you find abalone with its meat still there you may see that it:

  • has swollen mouth parts, occasionally with the mouth coming out from under the foot
  • has a curled frilled edge
  • cannot stick to the rock
  • cannot right itself.

Biosecurity

The best way to ensure we don’t spread aquatic pests or disease is to follow good hygiene practices everywhere in Victoria.

Please avoid diving, hoop netting and fishing with a weighted line and anchoring your boat in the area shaded in the map above. More information about Biosecurity Control Measures is available on the Victorian Fisheries Authority website.

General decontamination advice for boats

  • Check: and remove seaweed or animals attached to your boat or equipment before you move location. This includes hoop nets, fishing line and reel, diving gear, the deck, motor and anchor.
  • Check: your vessel when you get to shore. Remove any seaweed or animals and put them in a rubbish bin. Don’t empty your bilge tank until you are washing your boat away from shore.
  • Clean: your entire boat and any equipment used at a commercial car wash or at home. Clean it thoroughly from top to bottom with fresh soapy water. Rinse your boat with fresh water. Do the same with any gear you have used.
  • Dry: your boat and any fishing/dive equipment fully before you use it again.

General decontamination advice for divers

Please wash all your dive equipment away from the water's edge so that run-off with soap or detergent does not affect the health of our waterways. It should also be done as soon as possible after leaving the water.

If you live or have accommodation in the area, you can clean your equipment when you return home. If you are a visitor and intend to launch your boat at many locations, the vessel should be taken to a car wash or service station with washdown facilities before you move location.

  • Check: your catch. If it looks sick, stop diving immediately and call the Animal Disease Hotline on 1800 675 888.
  • Clean: all other equipment in a bucket of fresh soapy water and leave it for 30 minutes. This includes your mask, snorkel, fins, gloves, weight belt, hood and catch bag, as well as your wetsuit, vest and regulator.
  • Dry: all your equipment completely before you go diving again.

Disposal of abalone waste

Abalone shell, meat and gut must not be:

  • shucked (taken from the shell) at sea
  • dumped into the sea
  • used as fishing bait.

Take your abalone catch home and dispose of the waste with your household rubbish.

Further information

AquaVetPlan for Abalone viral ganglioneuritis

Page last updated: 15 Oct 2021