The seafood industry employs over 13, full time workers.
Over two-thirds of New Zealand's aquaculture product comes from mussels and oysters.
These shellfish are cultivated in two distinct stages; first spat needs to be collected, then the spat is grown in a grow-out facility.
Spat, also called seed, is the free-swimming larval stage of a shellfish. Spat is cultured in hatcheriesand can be grown in tanks on land. Hatcheries can also be associated with research facilities where spat can be selectively bred to specifications, as broodstock.
A grow-out facility is the place where the spat are raised to market size, usually in enclosures anchored in coastal waters. Advertisements Green lipped mussel Until the early s, mussels were harvested by hand from intertidal rocks.
Dredging was then introduced, and within a few years the mussel beds in Tasman Bay and the Hauraki Gulf were dredged clean.
The endemic green lipped mussel was used to trial growing mussel spat young mussels on ropes suspended from rafts. The Hauraki Gulf and the Marlborough Sounds provided sheltered environments, with clean water rich in plankton.
The cultured mussels were ready for harvest after 12 to 18 months, and first went on sale in The labour-intensive raft method was replaced with a modified Japanese longline system. Biodegradable stockings were packed with spat and tied to parallel rows of looped ropes, supported by buoys.
Young mussels grow through the stockings, anchoring themselves to the ropes with their strong byssal threads beards. Recent research has been investigating offshore mussel farming in exposed areas several kilometres from shore, such as farms offshore from Napier and Opotiki.
However, this method was unreliable. In a marine scientist discovered mussel spat encrusted on drift kelp on Ninety Mile Beach. Locals collected the seaweed and air freighted it to mussel farmers. Kaitaia spat, as it became known, is now the prime source of seed mussels.
Both have been commercially harvested since the mids. Bluff oysters have never been cultivated, but various attempts were made to cultivate the rock oyster. Rock oysters are found naturally in the intertidal zone in the north of the North Island, and were subject to early cultivation experiments.
During the s, commercial farmers grew rock oysters on sticks coated with cement, and laid in racks in the lower intertidal regions of harbours and inlets around the northern North Island.
This newcomer was the Pacific oysterwhich had probably been introduced into New Zealand waters in the s from a Japanese vessel hull or in their ballast water.Key facts.
Demand and production. Aquaculture activities utilise % of New Zealand’s coastline; Farming takes place within approximately 19,ha of . Not just sheep! All about farming in New Zealand.
By Amy Cooper, GreatSights New Zealand Here are some facts about New Zealand farms and the farming lifestyle. Sheep farming. Aquaculture. Commercial fishing operates around New Zealand with mussel, oyster (including the famous Bluff oyster) and salmon farms around the . Aquaculture New Zealand is the voice of the New Zealand aquaculture industry, representing Greenshell™ Mussel, New Zealand King Salmon and New Zealand Pacific Oyster farmers, as they strive to reach a target of $1 billion in annual sales by New Zealand's seafood industry plays a key role in the country's economy, contributing around $ billion in export dollars and employing more than 10, people, who provide New Zealand and the world with high quality, nutritious and great tasting seafood.
Key Facts. The Food and Agriculture Organisation (FAO) predicts the world’s seafood consumption will rise by 35% over the next ten years, suggesting this growth . New Zealand's aquaculture industry is building further on its sustainability credentials with the launch of A+, the new standard of sustainable aquaculture.
MSC's vision is for the world's oceans to be teeming with life, today, tomorrow and for generations to come.