Learn about Downeast Institute's SoftShell Clam Research


'Filipino scientists seeded giant clams, Chinese fishermen stole them

Growing seed clams is a labor-intensive process that begins in January when we collect soft-shell clam broodstock from local flats. Hatchery staff grow algae (single-celled plants, or phytoplankton) to feed clam broodstock for approximately two months before inducing them to spawn. The newly born larval clams swim in the water and are microscopic.


How to Cook With Manila Clams

The initial stocking density was 3.0 grams seed (wet weight) per cubic centimeter. The seed clams were sorted on days 14, 52 and 73 of the 83-day culture period. Based on the amount of available algae, the daily ration ranged 1 to 4 percent dry algae per clam (wet weight). Algal culture Culture tubes were used for fluidization of seed clams.


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Clam Seed Handling Tips Check weather conditions before arranging for seed delivery Make sure you can get to lease site ASAP to plant seed Make sure bags and supplies are ready for planting Get seed information from supplier (e.g., number per ml) Check seed upon arrival to be sure it is alive


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Since clams are an infaunal species (living in the sediment), aquaculture operations typically involve placing the clams on the bottom at some point as they grow. Typical hard clam aquaculture operations will purchase small seed clams from hatcheries which specialize in the spawning and care of young shellfish through the fragile larval phases.


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Downeast Institute collaborated with a clammer in Trenton, Maine to pioneer techniques for farming quahogs in Maine ( Beal et al. 2009 ). Visit DEI's Quahog research pages to learn more about field grow-out methods. DEI produces quahog seed upon request and as space allows. Inquiries should be directed to Kyle Pepperman, 207-259-5048.


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A.R.C.'s modern Hatchery and Nurseries incorporate advanced and innovative technologies to ensure the successful and healthy production of our shellfish. We have the ability to spawn a wide variety of shellfish including the Eastern Oyster, Quahog, Surf Clam and Bay Scallop. We spawn and grow hundreds of millions of animals per year for local.


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RCTB purchased about 500,000 seed clams from hatcheries. Baby clams, called seed are grown at various locations. The yield is the estimated number of clams received from the hatchery minus the culling of very small clams that are not growing well, mortality and statistical variation in measurements. The typical yield is about 80%, about 400,000.


Baked Clams

Farming clams starts out at the hatchery where clam larvae are set on fine screens in down-wellers. The young seed is later raised in up-wells, containers which allow algae rich water to be pushed up through the juvenile clams, thereby allowing them to feed continuously and grow rapidly. Once the clam seed grows to sufficient size, it is then.


Learn about Downeast Institute's SoftShell Clam Research

Welcome to Intracoastal Aquaculture. Your Source for Quality Hard Clam Seed


The Vineyard Gazette Martha's Vineyard News She Sees Sea Shells

Clam seed are planted on shellfish leases in the waters around Sapelo Island. Currently, there are less than a dozen shellfish leases in Georgia. Sapelo Sea Farms holds five of the leases; growing clams on two of them and harvesting wild oysters from all five. Sapelo Sea Farms produces the vast majority of clams in Georgia and continually seeks.


FileSweetgum tree seed pods.jpg Wikipedia

Seed clams from A.R.C. on their way to being scattered on the Wellfleet flats. (Photo by David Ziemba) The seed at A.R.C. comes from a long genetic line, beginning with wild clams brought to the lab 50 years ago, according to Wittenstein. The company has kept track of subsequent generations' growth and survival to ensure the line's longevity.


Water Quality — Coalition to Save Hempstead Harbor

The clam-seeding project is a collective effort by the 250 local diggers who sell clams to Gulf of Maine Inc., which diverted $1 for every bushel of clams it purchased into a fund for buying baby.


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Juvenile clam (seed) production: Clam larvae are bred in hatcheries and are fed a diet of algae until they reach about 1 mm in size. Larvae develop shells after 2 days. After 7 to 14 days they lose their swimming ability, settle out, and are moved to containers with mesh that allow water flow over the seed. Nursery stage:


Seed Clams Tracey Pereira

SOFT-SHELL CLAM SEED. Soft-shell clam (Mya arenaria) must be ordered by February to ensure an adequate supply.Clams that are 1 mm to 2 mm are ready for nursery trays or upwellers and can be shipped to you between May and June, or picked up at the hatchery. If you require over-wintered seed (5-8 mm) that is ready for planting, orders placed in February will be ready in May or June of the next year.


Seed Clams ProStitcher

We supply clam seed and oyster spat for growers big and small. We offer high quality seed and spat at competitive prices early in the growing season. Call for seed pricing/availability 252.515.0214


Marshfield, Scituate transplant clams in annual relay The Boston Globe

The hard clam production process consists of three consecutive stages—hatchery, nursery, and growout to a marketable size. Photo by University of Florida IFAS.Clam farming begins in the hatchery with production of seed. Adult clams are induced to spawn by manipulating water temperatures. Photo by Tom Smoyer, HBOI.In the hatchery, larval clams are reared under controlled […]