Fears for oyster industry

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Tim Shadbolt

Dunedin
Hundreds of jobs could be on the line if a lethal parasite attacking Southland’s famous Bluff oysters spreads across Foveaux Strait, Invercargill Mayor Tim Shadbolt says.
The ripple affects would be widespread. Dunedin businesses were already bracing for the possible fallout.
The warnings came as calls for action mounted following the detection of the bonamia ostreae parasite at two Stewart Island oyster farms late last month.
Mr Shadbolt said yesterday there was real concern the entire Bluff oyster industry was at risk from the parasite, and losing it would be “absolutely devastating” for the region.
“A lot of jobs are on the line. It would be a tragedy for Southland if this delicacy (disappeared).
“It’s just a real nightmare. It’s probably the worst issue we’ve faced since the threat to close the (aluminium) smelter.”
The marine parasite, which could move through tides and current, was detected in the Marlborough Sounds and Nelson in 2015, but it was the first time it had been found in another part of New Zealand.
It could be fatal to flat oysters, and was believed to spread after oysters died, prompting calls at a public meeting in Bluff on Tuesday for Stewart Island’s farmed beds to be pulled up now.
A delegation from Southland also travelled to Wellington yesterday to meet ministers and ministerial officials and discuss the threat.
Ministry for Primary Industries director of readiness and response Geoff Gwyn said the threat was also discussed at a meeting of MPI’s response governance group yesterday.
He chaired the meeting, but could not say yesterday what steps would follow or when an announcement could be expected.
MPI had already introduced restrictions on the movement of some shellfish species, farm equipment and vessels to and from affected areas, including Stewart Island, to limit the parasite’s spread.
Beyond that, lifting the Stewart Island farmed oyster beds was “one obvious option” to protect Bluff’s wild oysters, “but there are others”,
Mr Gwyn said.
He would not say what other options were being considered, and stressed the need to avoid a “knee-jerk decision”.
“The reality is we’re treating it with urgency, but not with haste.
“Whatever option we take in this space, we are going to impact on people’s livelihoods, and that’s not something you do without making sure you’ve actually done due diligence,” he said.
There “clearly is a risk” to the wider industry, but none of the options being considered could eliminate that completely, he said.
“Whatever decision we take will be to minimise the risk, but there’s no such thing as a zero-risk option here.”
John Edminstin, an oysterman and chairman of the Bluff Oyster and Food Festival, said the “best course of action” would be to lift the Stewart Island beds before the parasite reached Bluff’s wild beds.
Not everyone agreed with that idea, but there was little choice and little time, he believed.
“I believe it’s the only course of action they can do. You can’t move the wild ones, but you can move the ones that are farmed.
“That’s about all they can do and hope like hell they’ve caught it in time,” he said.
The Bluff oyster festival would also suffer if the parasite spread, but that concern was secondary to the economic impact of losing the wider industry, he said.
“We can still have a festival. We’ll just change the name, perhaps.”
Mr Shadbolt said he had been told at least 400 workers, and probably more, worked in jobs connected to the oyster industry, and would be affected if the parasite spread.
It would also hurt the region in other ways, as the Bluff oyster was “an icon, really, in Southland”, he said.
“It’s sort of symbolic of the success of our region in recent times, and it would be a real blow.”
Otago Daily Times

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