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Last updated on April 19, 2014 at 13:20 EDT

Latest Bivalves Stories

2005-07-27 07:35:01

By Pascal Fletcher CUBAGUA, Venezuela (Reuters) - Those who fear the world's economy will crash the day the Earth's oil reserves run dry can cite the "pearl island" of Cubagua as a lesson in how not to exploit a natural resource. This parched, almost uninhabited, scrub-covered islet off Venezuela's eastern coast was once a booming Spanish colonial trade depot that sent shiploads of glittering pearls to Europe to adorn the rings, necklaces and robes of monarchs and popes. Nearly five...

2005-07-20 17:25:00

The numbers of overwintering waterbirds at Lake Constance, a large lake on the borders of Germany, Austria and Switzerland, have increased fourfold since the early 1960s, with a daily average of 162 500 waterbirds from September to April as shown by a study published in the august issue of Freshwater Biology. This massive increase coincides with the major expansion of zebra mussels in the lake, originating in the Caspian-Aral basin, and a major pest in Europe and North America. The main...

2005-07-19 15:45:54

By Andy Sullivan WASHINGTON (Reuters) - The Eastern Oyster may be in trouble in the Chesapeake Bay, but any move to protect it as an endangered species could devastate thriving oyster fisheries from Maine to Louisiana, fishermen told Congress on Tuesday. The National Marine Fisheries Service is expected to decide by January whether the oyster should be listed as threatened or endangered under the Endangered Species Act, a move that could prohibit it from being harvested nationwide. The...

2005-05-30 16:14:37

NEWPORT NEWS, Va. -- A 30-month fact-finding experiment will examine how Asian oysters grow, perform and survive in the Chesapeake Bay. Researchers with the Virginia Institute of Marine Science and the University of Maryland will place thousands of the exotic oyster species in cages in the bay at four sites, two in Maryland and two in Virginia. The scientists want to see how the Asian oysters compete with native oysters, whether they survive diseases that have ravaged the native stocks and...


Latest Bivalves Reference Libraries

Chinese Pond Mussel, Sinanodonta woodiana
2013-10-11 11:20:39

The Chinese Pond Mussel (Sinanodonta woodiana), known also as the Eastern Asiatic Freshwater Clam or the Swan-mussel, is a species of freshwater mussel, an aquatic bivalve mollusk belonging to the family Uniondale, the river mussels. The shell is brown or blackish, occasionally with a greenish hue, the color varying but normally more intensively colored at the periphery. The shape is elliptical to almost spherical, with the lower margin strongly convex. It is native to Eastern Asia but...

Corbicula fluminea
2013-10-11 11:17:31

Corbicula fluminea is a species of freshwater clam, an aquatic bivalve mollusk belonging to the family Corbiculidae. This species is originally from Asian origin, therefore it is often referred to as the Asian Clam or Asiatic Clam. Within the aquarium and koi pond trade it is frequently called the Golden Clam or Golden Freshwater Clam. Within southeast Asia its known as the Prosperity Clam or the Good Luck Clam. It has been introduced into many parts of the world such as North America...

Pinctada Maxima
2013-04-25 16:49:52

Pinctada maxima is a species of pearl oyster, a marine bivalve mollusk belonging to the family Pteriidae, the pearl oysters. There are two different color varieties: the White lipped oyster and the Gold lipped oyster. These bivalves are considered to be the largest pearl oysters in the world. They have a very strong inner shell layer composed of nacre, also known as “mother of pearl”. They’re significant in the cultured pearl industry as they are used to produce South Sea pearls....

Flat Tree Oyster, Isognomon alatus
2013-04-25 16:28:02

The Flat Tree Oyster, Isognomon alatus, is a species of bivalve mollusk belonging to the family Isognomonidae. It can be seen along the Atlantic coast of North America, ranging from southern Florida to Brazil and Bermuda. This oyster has two thin and irregularly shaped valves that are joined by a long straight hinge. The exterior is sculpted by a large number of rough, concentric rings with loose flakes and varies in color from a pale brownish olive to a purplish black. The nacre on the...

Cockscomb Oyster, Lopha cristagalli
2013-04-17 11:50:41

Lopha cristagalli, also known as cockscomb oyster, is a species of marine bivalve mollusks within the family Ostreidae. This species has a shell with the potential to reach a maximum diameter of roughly 20.5 centimeters, 10 centimeters being the most common. The coloration varies from dark to light purple and is thick, strongly ribbed, and slightly inequitable shell. The shell inside is porcelaneous, normally a purplish-brown or whitish. The margins of the valves have a distinctive zig-zag...

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