A newsletter for, and about, the NSW Oyster Industry 
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Oyster News  Mar / Apr '20

A newsletter for, and about the NSW Oyster Industry

Sorry it's late ... very late. It's been a hellish start to the year, as you all know. For more regular updates, please join the Australian Oysters Facebook Group here. 
Spat Availability & Hatchery Updates
Fires & Floods
Tide to Tip - Waterway clean-ups
Other News
Committees & Associations
Related Newsletters


It is FREE to advertise in these classifieds. Items could include equipment, oysters, businesses or services. Please send details to or call 0488656366. Please limit your description to 100 words or less, and remember to include your contact details & location. You may also include photos with your post.
CLICK HERE: Classifieds

Spat Availability & Hatchery Updates

This section provides a link to the latest information on spat availability. The first link provides an update on the latest hatchery runs. For more information about spat availability, prices and ordering please contact the hatcheries and nurseries directly. For information on the breeding program, please contact the Select Oyster Company on The second link provides access to a directory of NSW wild caught spat suppliers. To update or add your details to this directory please contact Andy Myers (0488656366 /
CLICK HERE: Hatchery Stock Availability - March 2020
CLICK HERE: Directory of NSW Wild Caught Spat Suppliers
EOI - Commercialisation of the SRO breeding program

During 2019, the NSW Shellfish Committee worked with the Select Oyster Company & NSW Farmers Association to undertake the review of commercial activities supporting industry adoption of elite genetics from the Sydney Rock Oyster breeding program.

External consultants & the DPI Business Development and Innovation group reviewed the pathways to commercial adoption and have recommended that an EOI be offered to attract a partner or partners from the private sector to improve industry availability of the selected lines of Sydney Rock Oysters (faster growth, QX resistance, better condition) produced each year by the DPI breeding program.

DPI worked with Shellfish Committee to develop an EOI that meets the needs of the NSW oyster industry to maintain access to broodstock and spat whilst establishing a self-funding model.

The EOI for the commercialisation of the SRO breeding program was published on eTendering RFT ID: 20-1205 RFT on 9 April 2020. The Select Oyster Company are supporting interim arrangements and have been invited to participate in the EOI.

For more informaiton and to view the tender documents please click here.
Select Oyster Company (SOCo) - Update by Matt Wassnig

The Select Oyster Company (SOCo) are pleased to welcome new Board members Michael Egan & Emma Wilkie, both of whom bring significant experience and expertise. Michael is the Managing Director of a specialist veterinary company, and Emma is a Marine Estate Manager with NSW DPI. Matt Wassnig has been elected as SOCo Chairperson, taking over from Jane Clout who is retiring as a Director in July.

Broodstock for spat production are available to hatcheries from 'commercially elite' families that possess strong genetic profiles in the areas of disease resistance, growth rate and conditioning. Family lines from year class 2018 will be added to the list of available broodstock shortly.

Growers & nursery operators sourcing SOCo spat from hatcheries are encouraged to claim a rebate on the SOCo levy while funding lasts. Application forms can be found here (conditions apply).
Aquafarms Queensland - Update by Dave Williams

Aquafarms Queensland early spring spat are all performing beyond expectation, low mortality and a nice deep cuppy oyster. We are now getting feedback from growers who are selling oysters under 2 years due to good growth and also nice shape. The bottom line, better production and quicker cashflow.

This last batch went to many smaller growers and all have had great results. It is interesting to see many different nursery techniques; Flupsy’s seem to really be great - exceptional resalts in Merimbula. We are always happy to help with advice in nursery grow out and help with knowledge. Good communication is critical for the industry to move forward. We are now underway with a new run and will be ready in late March.

We have expanded the oyster production side of the hatchery with more set tanks, greater algae production tanks and a seawater chiller so we have a huge capacity and mitigation of risk so the Industry can rely on quantity & quality hatchery produced oyster spat.
Aquafarms Queensland is very excited to have Bruce Redmayne growing our spat in his new nursery facility in Port Stephens and reports back from top NSW industry growers are all very good and very happy with spat produced especially shape and size and getting the spat they ordered.
Aquafarms Queensland also has a new hatchery technician/scientist dedicated working on growing algae and seaweed, so our algae production is high quality and helps in greater oyster spat production and hatchery expansion.

There is a Facebook page for Aquafarms Queensland here.

1- Spat from spring production at 6 weeks old after delivered from our hatchery. Tumblers give a nice deep oyster and big growth, nice shape. 
2 & 3 - Broodstock just spawned - sourced from Merimbula & Wapengo. Thanks to Stirling Cullenward, Tim Brown & Mike Jay. Working with industry leaders we are using their knowledge of what they want in a oyster in broodstock selection. 

 Bruce Redmayne Oysters - Update by Bruce Redmayne

We have recently expanded our nursery to accommodate the growing demand for high quality spat from industry. Our spat, from Aquafarms Queensland, is started in upwellers and grown out in tumblers to encourage a deep cup and uniform growth. We aim to supply 4-12+ mm spat. Our first run has all been despatched to very happy customers. We are currently taking orders for the next run, due in March.


At the request of industry, I have started listing employment opportunities - as a new section in this newsletter, and also on the NSW oysters website (

It is FREE to advertise employment listings. Please send through details via email to or call 0488656366. 

Please include a job title, job summary, location, closing date and contact details. More detailed position descriptions, selection criteria etc. will be provided as a PDF link for download. 
CLICK HERE: Employment


NSW survey of industry impact

A new survey has been designed to gain updated feedback on the current impacts of COVID-19 on the NSW oyster industry, and to gain an understanding of potential future impacts & industry needs. This feedback will assist government and support agencies to advocate on behalf of the industry and to focus on areas of need.
The survey will remain open until Friday 8th May. Please take the survey here.
Economic responses - Support for business

NSW DPI has pulled together a summary of both commonwealth & state level economic assistance that might be available to industry at this time. You can download DPI's summary of information here. 

Please note however that the assistance available is changing as the situation unfolds. Please check the Treasury's website for the latest information. The website includes a really good summary of Federal support here. Some of the initiatives currently on offer includes: 
  • Job-keeper payments
  • Boosting cash-flow for employers
  • Temporary relief for financially distressed businesses
  • Increase in instant asset write-off
  • Backing business investment
  • Supporting apprentices & trainees
  • Support for coronavirus affected regions & communities
Results from 1st survey of oyster industry impact (Oysters Australia)

Towards the end of March, both the FRDC & SIA (Seafood Industry Australia), approached Oysters Australia for an update on how the Australia oyster industry was faring during the pandemic. A short survey was circulated via the Australian Oysters Facebook Group with 35 responses received across NSW, TAS & SA. Each jurisdiction reported similar issues. On average, farmers reported a drop in sales of: 
  • 90% in the wholesale (food service) market 
  • 75% in the retail market 
Key issues of concern at the time included: 
  • Finances to retain staff (eleviated in part by Job-keeper) 
  • Cash-flow gap to manage farm and stock with minimal / no income
  • Lease space & infrasturcture to retain mature stock
  • Lease space to bring in juveniles (potential knock-on effect to future years) 
  • Glut of oysters when hospitality sector reopens causing downward pressue on prices
Marketing initatives

With the drastic drop in sales, NSW and the broader Australian oyster industry are looking carefully at marketing initiatives and promotions. To inform these decisions, market intelligence data is being gathered on the Oysters Australia website, providing information on production histories, production forecasting, export / import and analysis of supply chains.

Production forecasting

Something we're currently lacking. Forecasting production is important so marketers and those in the supply chain can make decisions on sales effort and promotional campaigns. For example, there will be a glut of oysters and downward pressure on price when the hospitality sector picks up, but we have very little knowledge of the scale of this problem. How many oysters do we expect to hit the market at the same time? 

Oysters Australia is currently developing a production forecasting program. We would appreciate your input when this is circulated. 

Love this initiative by Ken Rowe from Kangaroo Island Shellfish to enourage people to eat oysters at home. Take up the #oystershuckingchallenge video challenge now on social media: 
  • Show people how you shuck an oyster
  • Name two things you love about oysters 
  • Nominate 2 more people for the challenge
Nutritional properties of oysters

There is a fantastic website 'Super Seafood' which gives an analysis of the nutritional values of 20 species of Australian seafood - including SRO, PO & Angasi. This website & resources were produced as part of the Australian Seafood CRC in 2014, but the materials haven't been widely circulated & used.

Sydney rock oysters
Antiviral properties of oysters

Prof. Kirsten Benkendorff (Director, National Marine Science Centre, Southern Cross Uni.) recently shared some information about the antiviral properties of oysters. 

Although we can't say that oysters will treat or prevent COVID19, they have certain properties that may be beneficial in boosting our immunity and / or inhibiting viruses..... read Kirsten's information in full here.
Zinc & coronavirus

Zinc is often used to shorten the span of the common cold (it can reduce length of common cold by 1 day), so there is a belief by some in the medical field that it can also shorten the length of the coronavirus infection - but it will not prevent a coronavirus infection. Interesting article worth a read.
ASI stakeholder letter

Australian Seafood Industries (ASI) recently published a letter to stakeholders regarding Covid-19, and impacts on the Pacific oyster breeding program. You can read the letter here.
Free TAFE NSW courses - Covid-19 support

TAFE NSW are offering 21 free short courses online to assist anyone across the state who wants to upskill during the COVID-19 pandemic.

Those that may be of interest to oyster farmers include:
  • eMarketing for small business
  • Engaging customers using social media
  • Websites for small businesses
  • Digital literacy skills
  • Business administration skills
Oyster market 'falls off a cliff' - farmers scramble to store oysters

The Advocate in Tasmania recently interviewed Jon Poke about the impact of Covid-19 restrictions on the oyster industry. The article is a really good summary of the situation in incredibly tough times. You can read the article here.
$110m freight scheme developed to access overseas markets

The Morrison government is injecting $110 million to get international trade moving by helping organise hundreds of cargo flights carrying agricultural and seafood products to overseas markets. Find out more here. 

For those looking to export and take advanatge of these international freight support measures - please share your freight requirements with the Department of Agriculture, Water & the Environment by clicking here.
Taylors Shellfish (US) produces frozen value-added range

In an attempt to increase oyster consumption in the home, it's interesting to see Taylor's Shellfish in the US put out a range of frozen consumer-friendly products. Frozen half-shell, oyster cakes, oyster fingers, oyster fritters & even oyster spring rolls. Yum. View their online shop here.

Fires & Floods

Fire impacts on the oyster industry

Some of the major concerns for the oyster industry related to the bushfires included: 
  • Run-off from fire affected catchments resulting in low dissolved oxygen & low pH waters
  • Spike in nutrients potentially resulting in harmful algal blooms
  • Direct damage to land-based infrastructure 
  • Loss of sales across peak summer months
  • Ash accumulation in cultivation infrastructure
  • Mobilisation of sediment
During the unfolding disaster, NSW DPI, NSW Food Authority, NSW Farmers Association, OceanWatch and others worked together to provide regular updates to industry and were in frequent contact with farmers where communication was possible. Three industry updates were prepared: Update 1 (10th Jan); Update 2 (17th Jan); Update 3 (7th Feb). A list of recovery assistance organisations & information was also developed and circulated. 

The fire impact on the oyster industry was also covered extensively in the media. This interview with Caroline Henry (Wonbyon Lake oyster farmer & Chair of NSW Farmers Association - Oyster Committee), provides a good summary.

Photo acknowledgements - clockwise from top left: Captain Sponge; ?; Broadwater Oysters; Audrey Thors; ?
Bushfire relief - grants & financial support 

There are a range of grants, subsidies and loans available through the Rural Assistance Authority. For the latest information, please check out their website here. There is also an interactive map which identifies financial assistance available within your LGA.

To navigate the confusion of grants, farmers may benefit from talking with the Rural Financial Councelling Service - who can provide free & confidential advice to help you make the right decision for your business. 

Some of the grants & loans available include: 
Disaster assistance & support sessions

Towards the end of February 2 x Oyster Industry Disaster Assistance & Support Sessions were held in Merimbula & Batemans Bay. The sessions covered financial assistance available, mental health support, updates from NSW DPI & Food Authority, and a feedback exercise to learn from farmers experience on the ground. This feedback is being consolidated and will be tabled for NSW Shellfish Committee & NSW ARAC consideration.

The sessions were generously supported by Oysters Tasmania, who funded two farmers to travel up to share their experience of rebuilding following the 2013 fires in Dunally. A huge thanks to Phil Glover (Blue Lagoon Oysters), Ellen Duke (Cameron's of Tasmania) and Sue Grau (Oysters Tasmania) for coming up, sharing their stories so openly and supporting our south coast growers. 

The sessions were well attended with some 60 farmers coming along. Financial support for the events was secured through the NSW Rural Resilience Program. 
Flood mortality

As if fires weren't enough to deal with, many oyster farming producing estuaries reported mortalities associated with the floods in February. These mortality events weren't necesarily related to the persistence of freshwater, but floodplain and catchment management issues on the back of drought conditions - with acid sulphate soils & blackwater events resulting in low pH and low dissolved oxygen. In many estuaries these conditions also resulted in significant fish kills. 

In one area of the Nambucca River (near Gumma Creek), oyster farmers reported 80% mortliaty. A similar story was reported in the Clybucca area of the Macleay River, with farmers reporting 70% loss.
New reporting mechanism to record stock loss & infrastructure damage

NSW DPI have a new online mechanism to report infrastructure damage & stock loss. Follow the link here. Under the "Is there damage?" category, tick "Fisheries" and you can report stock loss and infrastructure damage.

This information helps Government understand the extent of impact, and helps to target resources to your area. 
Bushfire relief - Free TAFE NSW Courses

In response to the bushfire tragedy in the north and south of NSW, TAFE NSW, in conjunction with the NSW Government, is offering a number of fee-free short courses tailored to providing the skills needed to help rebuild devastated communities.

Those that may be of interest to oyster farmers include:
  • First aid
  • Licence to operate a forklift 
  • Food safety supervision
  • Welding

Tide to Tip 2020 - Waterway Cleanups

 A bright moment in a otherwise dark start to the year - thank you so much to everyone that turned out to help with the inaugural Tide to Tip clean-ups in February. 
  • 243 people were involved
  • 12 tonnes of rubbish was collected 
  • 12 newspaper articles, 2 radio interviews were published
  • 19 estauries participated (Tweed; Richmond; Nambuca; Hastings; Camden Haven; Manning; Wallis; Port Stephens; Brisbane Water; Hawkesbury; George's; Shoalhaven; Jervis; Tuross; Wagonga; Nelsons; Merimbula; Pambula; Moreton Bay)
An additional 4 estuaries (Macleay; Clyde; Wapengo & Wonboyn) were scheduled to take part, but on the back of fires & floods they unfortunatley had to postpone. 

It was wonderful to see so many farmers working together on the clean-ups, with many estuaries putting on bbq's after the work was done. A good opportunity to relax and discuss the events of the summer.

It was also great to see so many oyster farmers inviting other coastal groups to get involved. Across the state there was participation from professional fishermen, recreational fishers; indigenous groups, rotary clubs, councils, NGO's, NSW DPI, LLS, National Parks, Sydney Fish Market, OceanWatch and others.

Lastly, a special thanks to all those farmers who put their hands up to help out as local coordinators and first-aiders. I look forward to talking with you all later in the year about planning for Tide to Tip 2021. 

Other News

Multi-million dollar plan to boost Sydney rock oyster production

A Sydney-led company has ambitious plans to ramp up production and supply of Sydney rock oysters.

In an investment worth "north of $55 million", East 33 has bought assets in the oyster supply chain in Wallis Lake, Port Stephens and Manning River and plans to boost its SRO production three-fold by 2023.

East 33 has raised capital from Australian-based investors to complete acquisitions worth more than $55 million consisting of 154ha of oyster farming water leases, an oyster nursery in Port Stephens, an SRO export-approved distribution facility in Tuncurry, Hamilton's oyster bar and one of the largest oyster processing wholesalers in Sydney.

"We have insisted that all the farmers and their families all stay in the business. It's disingenuous to say we've acquired their businesses - we have, but it's their business plan. We are just adding corporate and business nous," said Mr Garton, Financier & East 33 Executive Chairman. Read more here.
Non-delivery of oyster punts

There have been a few reports of NSW farmers commissioning oyster punts from a company in Somersby on the central coast - only for these vessels never to turn up. Farmers are being left thousands of dollars out of pocket.

Kel Henry (Wonboyn Lake oyster farmer) is collecting details of anyone who has lost money to this company. Please contact Kel on 0477054590 to report your experience.
Status of harvest areas

The NSW Food Authority has started to publish a list of harvest area closures on their website. Although the Food Authority attempts to ensure the current status of harvest area is updated on a regular basis, the list may not always reflect the most recent closures. Click here for more details.
 Importation protocol surveillance shows no evidence of POMS in Clyde and Shoalhaven rivers

On 2nd & 3rd March 2020, NSW DPI worked with oyster growers in the Clyde and Shoalhaven rivers to undertake the first phase of a 2yr. targeted proof-of-freedom surveillance program for POMS. Laboratory analysis is now complete with results negative for this first phase of surveillance. There is no evidence of the virus that causes POMS in the oysters sampled within these estuaries.

The surveillance outcome for Phase 1 of this program is a great result for the oyster industry and welcome news following such a difficult growing season caused by bushfires and storms. For further information please contact Ben Rampano of NSW DPI Aquatic Biosecurity on (02) 4916 3907. Read the full update from NSW DPI - Biosecurity here.
Farmers help animals in trouble

Some great reports over summer of farmes helping animals caught up in the natural disasters. 

Firstly, during the bushfires Leon Riepsamen from the Shoalhaven river rescued a juvenile flying fox. Found clinging to an oyster basket, Leon took her to South Coast Wildlife Rescue - who named her Oyster! 

Secondly, Bryce from Broken Bay Pearls rescued two dogs from the swollen Hawkesbury River during the floods. Apparently the dogs were very happy to be pulled out of the water, very far from home! 
Oyster farmers adapting to sea level rise

Wallis Lakes farmers are withstanding rising sea levels because of their willingness to adapt. Stephen Verdich has worked at the family-run Verdich & Sons Oysters for over 40 years.

"Wallis Lake has had to reinvent itself (by) using different techniques to grow oysters. We've always had to change, and change. Over the period of time that I've been oyster farming in Wallis Lake we've noticed our summers are getting longer.  The optimum growing height for oysters is now another 50mL higher (because of) the rising waters. We're thinking that is partly to do with the changing of the tides and changing of the weather."  Read the media article here.
NSW rivers, lakes and lagoons warming twice as fast as ocean

Marine biologist Elliot Scanes from the University of Sydney has analysed 12 years of data from 166 NSW estuaries and found the composition of those waterways was shifting. He found these waterways are warming twice as fast as the ocean. Acidity also rose in all waterways and at the same time creeks and lagoons were becoming less salty. Read the media article here.
Approved NSW Sampling Accreditation - Online Training Course

Persons who undertake sampling for local shellfish programs are required to be accredited as approved samplers under the NSW Shellfish Program. To date this has been achieved through a face-to-face training course and written examination. This method of training consumes significant time and is costly for both the trainer and course participant, particularly as reaccreditation of approved samplers is now required at least every two years.

To address this issue, the NSW Food Authority has developed an online sampler training course as a means of delivering the training more efficiently. It also allows samplers to complete the course at a time that suits them. The fee for the online course is $50 for initial accreditation and $25 for re-accreditation (GST inclusive).

To ensure that the program maintains best practice, reaccreditation for approved samplers will be required every two years. Existing accreditations will remain current until 1 September 2020, after which it is expected that existing samplers will complete the online course and switch over to the new accreditation system. Click here for more details.
Good Neighbour Policy (OISAS)

Farmers are reminded of the Good Neighbour Policy (Chapter 6) of the NSW Oyster Industry Sustainable Aquaculture Strategy. As oyster farmers work in publicly owned waterways, the industry relies on the acceptance and support of local communities. If this support if eroded, we will likely see an increased number of complaints, and ultimately this will lead to greater regulation (and higher fees). No-one wants to see this occur, so please be aware of your responsibilities under the Good Neighbour Policy. 
NSW Department of Lands (Crown Lands) Fact-Sheet

Four fact-sheets have been prepared as information for oyster farmers in NSW. These fact-sheets cover. 

•    Leases & licenses for oyster farming on Crown land
•    Native title and the oyster farming industry
•    Aboriginal land claims
•    Aboriginal land claims definitiion of terms
North Atlantic Seafood Forum highlights bright future for aquaculture

Read the notes here, however I've pulled out the key passages below: 

Aquaculture has “bright prospects,” Helgesen said – the panel’s report concluded that production could be ramped up significantly, up to six times its current size: “On marine aquaculture, we were stunned to learn that mariculture can be six times bigger than today. Especially for low-trophic aquaculture – shellfish hold enormous protein value and don’t have to be fed. It’s an economic opportunity, but also an opportunity for human health and nutrition. It’s a planetary opportunity and more land- and biodiversity-friendly.”

... “productivity drives value creation today, innovation drives value creation tomorrow.”
Oysters & clams can be farmed together

Oversees lab-based research suggests that different bivalve species complement each other and that polyculture removes significantly more algal particles than most monocultures. This suggests each species prefers to filter a particular set of algal particles, and could be raised together without outcometing each another. Read more here.
 AMSA National Law Certificates of Competency - Extension

The Australian Maritime Safety Authority have released a note advising vessel owners, operators, masters, coxswains and crew about an extension to all National Law certificates of competency. Due to the uncertainty caused by COVID-19, AMSA has issuing an exemption that:
  • extends all National Law certificates of competency and all associated endorsements, expiring between 26 March and 1 October 2020, for six months from the expiry date noted on the certificate; and
  • permits crew, subject to this exemption, to work on a domestic commercial vessel for this extension period.
More details can be found here. Should you require any further assistance or information, please contact AMSA Connect on 1800 627 484, (02) 6279 5000 or via email
Hepatitis A and Shellfish 

Interesting video about the spread of Hepatis through filter-feeders. 
Project Spyvalve uses oyster gape to predct fish kills 

A project at Murdoch University in WA, called Project Spyvalve, is using bivalves to spy on how human activity affects the health of aquatic ecosystems.

'Valvometer technology' uses a sensor attached to one shell and a magnet on the other. The sensor then reads the magnetic field around the bivalve to indicate when the shell is shut. If multiple bivalves in one area are shut for more than five minutes, researchers are alerted via an app of a potential water qualty issue. 

It is suggested that using mussels and oysters as indicators of water quality could help detect fish kills before they occur. Read more here.
 NSW Seafood Innovation Fund

Oyster farmers can access low-interest loans of up to $500,000 to invest in modern technology, equipment and systems to improve the productivity and profitability of their business. 

The Seafood Innovation Fund is available to meet the cost of carrying out permanent capital works. that will;
  • improve assets and infrastructure,
  • identify and address risks,
  • help build resilience to changes in seasonal conditions, and
  • ensure long term productivity and sustainable use of the marine and land-based environment.
Thanks to the NSW Farmers Association (Oyster Committee) who has been working hard behind the scenes to ensure the fund was developed, and made available for all oyster farmers. Click here to apply, and to find out more about the Seafood Innovation Fund.
Yumbah hatchery in South Australia officially opens

Yumbah Hatchery on the Eyre Peninsula was offically opened on the 18th March 2020. The hatchery involved a $1.35 million expansion of existing abalone farming facilities and benefited from $250,000 in SA government funding towards construction. Read the full media article here.
Waters of Eyre Peninsula opens for more aquaculture farms

An additional 6500 ha of waters across the Eyre Peninsula is being opened up to aquaculture - including tuna, mollusc and seaweed farming. Read more here.
The Journey of Jon Poke in the Tasmanian oyster industry

A lovely article recounting Tassie oyster industry legend, Jon Poke's journey in the industry. You can read the story here.
Oyster farmers fortunes transformed after an idea over a bottle of wine

Giles & Julia Fisher had never set foot on an oyster farm before they decided to buy the oyster lease for Freycinet Marine Farm at Coles Bay on Tasmania’s east coast.

The couple have transformed the small farm in Great Oyster Bay, starting with a corrugated iron shack down a dirt road selling “5 dozen oysters a day” and turning it into one of Tasmania’s top tourist destinations selling almost 1 million oysters a year. Read the full article here.
Andrew 'Twiggy' Forrest's aquaculture push

Mr Forrest's agribusiness arm, Harvest Road Group, has recently announced it had agreed to acquire an oyster farming operation at Albany, on WA's south coast, for an undisclosed sum. The planned purchase follows moves to buy or develop aquaculture assets around the state including mussel farms at Albany and Cockburn Sound, near Perth. Harvest Road has also proposed a major oyster farm off WA's Gascoyne coast. 

Mining billionaire Andrew 'Twiggy' Forrest says concerns about global seafood stocks prompted his multimillion-dollar investment push into aquaculture. Read more here.
Oysters gape a little wider in the dark of the moon

Researchers have found oysters open their shells wider as the moon’s brightness decreases.

Researchers think this lunar sensitivity might be linked to food sources. Oysters open their valves when there is food available. Research has shown that plankton, which oysters filter out of saltwater, also react to moonlight. In oceans across the world, zooplankton rise to the surface at night to feed on algae (phytoplankton) and avoid predation by much larger animals that hunt during the day. Read more here.
Discussion paper - Can shellfish growers cash in with nutrient trading?

An interesting concept recently discussed by the Global Aquaculture Alliance. Essentially a nutrient trading scheme which sees upstream polluters offset the release of nutrients to the waterway by buying credits in downstream oyster farms. You can read the article here.

Committees & Associations

There are a number of different committees and associations involved with the NSW oyster industry. Know who represents your interests.
CLICK HERE: To view all Committees & Associations

Related Newsletters

Thanks to all contributors. If you have any feedback or suggestions how we can improve this publication, please let me know 
Phone: (02) 9660 2262
Mobile: 0488 656 366
OceanWatch Australia is the National Marine NRM, recognised and supported by the Australian Government through the National Landcare Program. 

The NSW Oyster Industry Extension Officer is funded through the NSW Aquaculture Trust and the NSW Landcare Program. The NSW Landcare Program is a collaboration of Local Land Services and Landcare NSW Inc. supported by the NSW Government. 
Copyright © 2020 Oysters Australia, All rights reserved.

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