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Clams Oysters and Scallops
Clams, oysters and scallops are bivalve mollusks native to both freshwater and saltwater habitats. Many are edible and some types of oysters produce the world’s freshwater and saltwater pearls. All questions about clams, oysters and scallops can be directed here.
1,488 Questions
How does a clam mantle function?
The clam mantle is a thin layer of tissue that surrounds the clam's body and secretes the shell material. It plays a crucial role in shell formation, growth, and repair by depositing calcium carbonate. The mantle also helps in respiration and filter-feeding by creating water currents inside the shell.
How do you treat a oyster cut?
pee in the toilet....then before you flush, dunk your cut in, trust me, it helps!!
also after that, put shampoo and detergent on it, and dry it with a hairdryer.
This site has everything you need to know, from the types of diseases to what caused them. To answer your question, yes, they do. :)
However, it is still safe to eat clams. There are certain tests that the clams must pass in order to become edible.
http://www.thefishsite.com/articles/279/introduction-to-infectious-diseases-in-hard-clams
9 On which coast of the US are scallops more common -- the Atlantic coast or the Pacific coast?
The Atlantic Ocean:)
Answer Natural Pearls
Most importantly, a pearl is not formed from a grain of sand.
A natural pearl forms when something organic, most often a parasite, penetrates the shell of a mollusk and lodges within the soft inner body of the animal. Upon penetrating the shell the parasite encounters cells within the mollusk's mantle tissue known as epithelial cells. These cells grow into a sac which envelopes the intruder. This sac is known as a pearl sac. Once the sac has developed the cells begin excreting a chemical substance of aragonite and calcite. This is known as nacre. A natural pearl is composed of nacre. Cultured Pearls, Saltwater and Freshwater
Saltwater pearls are cultured by inserting a bead made of freshwater mussel shell into the gonad of a host mollusk. Along with this bead, a small piece of donor-mollusk mantle tissue is inserted. This tissue contains the epithelial cells needed to grow the pearl sac and initiate nacre deposition. The most common varieties of cultured saltwater pearls are akoya, Tahitian and South Sea. Freshwater pearls are cultured by inserting a small piece of mantle tissue into an incision made in the mantle of a host mussel. A bead is not needed and is rarely used except in beaded cultured freshwater pearl production (CBSB fireball pearls). Because the graft is made in the mantle tissue of the freshwater mussel instead of the gonad, a freshwater mussel may be grafted multiple times. Most often 12 to 16 grafts are inserted on either side of the valve, producing 24 to 32 pearls.
A Black Pearl
is
A
Black Pearl? Lol o.o
Someone give a better answe rplz!
Black Pearls - Natural dark color (not dyed) from the black-lip (Pinctada margaritifera) oyster in the Western to Central Pacific Ocean or from the La Paz pearl oyster (Pinctada mazatlanica) or rainbow-lipped oyster (Pteria sterna) in the Eastern Pacific between Baja California and Peru. Some people use the term "black pearl" to refer to any dark colored pearl, dyed cultured pearl or natural color pearl.
See black pearls at http://www.pearlhours.com/search.php?color=Black
Answer
Contrary to popular belief oysters do not produce pearls, mollusks do. The genus Pinctada is the primary producer of pearls.
Theoretically any mollusk can produce pearls, but bivalve mollusks, from the family Bivalvia (mollusks with two shells attached by a hinge) produce what are considered nacreous pearls prized and used in jewelry.
Gastropods such as those from the family Haliotis also produce "pearls" that are actually calcareous concretions, not nacreous pearls. An example would be abalone pearls.
---- Nov 28 2009
Oysters do produce pearls! I have millions of crassostrea Gigas (Pacific Oyster - once called the Japanese Oyster, minutes walk from my house - through Oyster farms and their release of spat into the local environment. Over the years, I've collected part of a film container of "Pearls" from these oysters, when harvested from the beach. I've broken a tooth, bighting down on one pearl.
----------- British Columbia, Canada!
---- Nov 28th 2009
The Crassostrea gigas produces non-nacreous calcareous concretions as this shell is non-nacreous. Pearls, by definition, are nacreous.
Oysters do not produce pearls.
Do oysters make small white things that LOOK like pearls which THOUSANDS of women happily wear around their necks????
Mother of pearl is the iridescent substance that forms the lining of the shells of some fresh-water and some salt-water mollusks. Like the pearl it is a secretion made by the animal's mantle and made up of of alternate layers of calcium carbonate and conchiolin. It is light reacting with this layering which gives mother of pearl its sheen.
Among the chief sources or mother of pearl are the pearl oyster, found in warm and tropical seas but the substance can also form in the shells of fresh water mollusks.
Mother-of-pearl is the nacreous iridescent lining of a mollusk's shell. It is composed of calcium carbonate and aragonite aligned in hexagonical platelets. Mother-of-pearl is also known as nacre. Mother-of-pearl is used for jewelry, buttons, tiles, the production of faux pearls, and calcium (pearl) supplements.
Naturally in an oyster or cultured in lakes.
When an oyster feels threatened it emits chemicals which collect into pearls.
What was the name of the three ships of christopher columbus?
The Three Ships Were Named La Niña, La Pinta, y La Santa Maria
What is the name of a fast-moving mollusc with a torpedo-shaped body and triangular tail fins?
Not sure exactly what you're talking about, but a squid can certainly appear torpedo shaped when swimming and also possesses a triangular shaped fin on the posterior end (the end opposite the arms and tentacles).
Yes, it is a mollusk because mollusks are squid or octopus-like creatures. Mollusks have a variety of ways to create a shell. Some mollusks have shells on the outside, such as a variety of gastropods. The Nautilus is one of the first cephalopods, which traditionally do not have an exoskeleton shell, which does have an outer shell covering.
hard on the outside, but soft and squishy on the inside
Where are the palp's found on the clam?
the palps are located anterior to the gills and ventral to the anterior adductor muscle.
Why are clam shells sometimes purple when you find them at the beach?
Purple-shelled clams, called cherrystone clams or mercenaries, are a species of clam commonly found along the east coast. Small cherrystone clams start out as white when small, but turn purple as they grow larger.
What kingdom phylum class order family genus species of the Virginia oyster?
According to The South Carolina Oyster Restoration and Enhancement Program (SCORE)
"Scientific Name: Crassostrea virginica
Common Names:
Eastern oyster, American oyster
Classification:
Kingdom Animalia
Phylum MolluscaClass Pelecypodaor BivalviaOrder LamellibranchiaFamily FilibranchiaGenus Crassostreaspecies virginica"
