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What Is Mussel Farming?

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  • Written By: Jeremy Laukkonen
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  • Last Modified Date: 27 September 2016
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Mussel farming is a form of aquaculture that involves raising and harvesting these mollusks in either natural or man-made environments. Marine and freshwater species of mussels are both farmed, though typically for different purposes. Mussels that are farmed specifically for food are mainly grown in marine environments, and freshwater species are typically used to create cultured pearls. Nearly half of all mussel farming takes place in China, which is the world's leading producer of freshwater cultured pearls, though mussels are also grown extensively for food in New Zealand and other areas. The main source of mussel farming in North America is Canada's Prince Edward Island, but the United States also grows these mollusks in Maine and Washington state.

There are many species of bivalve mollusks that are referred to as mussels, all of which can be characterized by elongated shells that tend to be less symmetrical than other types of clams. Mussel shells are dark in color as well, and many species of mussels are blue, brown or black. Not all mussels are palatable, but those that are can be raised for human consumption as a form of aquaculture. Like all mollusks, mussels also are capable of creating pearls by depositing concentric layers of calcium carbonate around a foreign body.

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When mussels are raised for food, it typically is done in a marine environment. These filter feeders naturally live in tidal areas, so most farm sites are in tidal zones as well. Farmed mussels can be raised on ropes suspended from buoys, though another method is to install pylons in a tidal zone. Ropes are then wrapped around the pylons in a spiral pattern, and netting is placed around the ropes. The ropes provide a place for the mussels to attach via their byssal threads, and the nets keep them from falling off or being attacked by certain predators.

Freshwater mussel farming can take place in lakes or man-made tanks, where the same rope-and-buoy methods found in marine aquaculture typically are employed. After the mussels have reached a certain size, they can be gently opened and implanted with tissue grafts. In order to maximize production, many grafts are usually inserted into each mussel. The mussels then coat these foreign bodies with calcium carbonate, which is a process that can create a pearl over the course of several months or years, depending on how much time a particular mussel farming operation can afford to invest. Pearls are also cultured in marine aquaculture, though those procedures use oysters instead of mussels.

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SteamLouis
Post 3

If ocean floors hadn't been degraded and tons of mussels taken from their natural habitat in short periods of time, we wouldn't be needing mussel farms right now. The same goes for fish farming tanks.

ysmina
Post 2

@SarahGen-- You don't have to worry about mussels from mussel farms. They're clean because the farms are always located in clean areas. After they are removed from the mussel farm, the mussels are then purified in clean water and the quality is graded.

Some people even eat mussels from open waters!

I live in Washington and there is a farm near where I live that does mussel and shellfish farming. I visited the farm once, it was very impressive and the mussels were definitely clean.

SarahGen
Post 1
I love mussels, but I'm always careful about where I get them from because I know that not all mussels are clean. I've heard that mussels tend to absorb bad substances in the water like metals. Do muscle farms do anything to clean the mussels before sending them off for consumption?

Mussel farms that produce mussels for eating can't do this in aquaculture type tanks, right? It's grown in sea water, so how clean can they be?

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