Splitting : the act of taking some of the oysters from a bag and distributing them in other bags. Screening machine : machine used to sort oysters. It can take the form of a limewashed tile, a cup, or a tube submerged in water and used as a fixing support for the young oysters.Ĭoncession plot: a plot in the public maritime domain entrusted to an oyster farmer for a limited period for an annual fee.Ĭrassistrea gigas : name given to the Japanese oyster farmed in the Bay since 1960.Ĭrassats : large sandy or muddy areas that emerge at low tide. Oyster ponds : basin or ponds where the oysters can get rid of any small impurities and to be stored before being sent to market.Ĭollector: this is an object that comes in different forms and shapes. This mixture makes it possible to detach the spat without running the risk of damaging it.Ĭhannel : access route to a port or to an anchorage area where a vessel will have the greatest depth of water under the keel, allowing it to progress in complete safety.
Lime washing : action of coating the tiles (collectors) with a mixture of sand and lime. Yard : installations made up of a set of tables on which the collectors or the lockers are placed.
The smaller the number, the larger the size of the oyster.Ĭatchment : First phase of oyster farming work, which consists of collecting oyster larvae on artificial supportsīarge : flat-bottomed boat used by oyster farmers. Tchanque (stilt) hut : a hut on stilts in the open sea, which provides a base for monitoring oyster farmsĬaliper : determines the size of the oysters: from 0 to 5 for cupped oysters, and from 000 to 6 for flat oysters. Hut : building (variable size) that is used as a shelter for oyster farming work that is carried out on land. Maturer : person who takes charge of the maturing process for the oysters The larvae will sit in these tanks for a couple weeks to allow for a good strike then we will remove the silos and bags and dump them straight on the river bottom of our designated oyster grounds.Maturing: last stage of the oyster production cycle allowing the oyster to acquire its colour and flavour. If no air was pumped into the tanks the larvae would settle and strike all on the bottom and would grow in terrible clusters that would cause very unhealthy growth. By getting a nice even strike across all the shells it allows the oysters a healthy area to grow and not get over crowded when planted out on our private oyster grounds. In doing so we are doing an exaggerated simulation of the natural flow of the water, and with this process the larvae are able to disperse all throughout the tank and hopefully strike evenly across all the shell inside the tank. When we dump the larvae in we have air pumping up from the bottom to keep the larvae moving around the water column.
#Oyster spat stick full
Inside the tanks we line the bottoms with bags of shell with large silos full of shell sitting on top of them. Now where spat on shell differs from setting larvae on strike is that instead of dumping the larvae on culch in small silos we dump the buckets of larvae into large tanks.
What signals us that the larvae is ready to go is when they start stringing and bunching up as opposed to just a cloud in the water. We have provided a video so you can see it yourselves. This simulates the natural flow of tides and currents in the water where oyster larvae is swept along, and while they are doing this they are being agitated signaling that it is time to release the enzymes that cause them to stick to objects and start growing their own shells. Now after they have been brought to temperature we place them in a bucket of water and stir them up. This is done to ensure the larvae is shocked by a sudden change and temperature, and it also helps the become active in the setting process much sooner. Our job here is just allowing the larvae to come to room temperature so that it is as close to the water temperature as possible. This process is not nearly as technical as the processes the hatchery employ to get the larvae. Once the larvae is bought from the Hatchery we bring it back to our nursery where we prepare the larvae to set.
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