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Sphaerium Levinodis
''Sphaerium'' is a genus of very small freshwater clams, Aquatic animal, aquatic bivalve molluscs in the family (biology), family Sphaeriidae, known as the fingernail clams. The small clams in this genus are unusual in that many of them, such as ''Sphaerium corneum'', can climb around underwater on aquatic plants, using their long and strong foot. Species * Subgenus ''Sphaerium'' Giovanni Antonio Scopoli, Scopoli, 1777 :*''Sphaerium corneum'' (Carl Linnaeus, Linnaeus, 10th edition of Systema Naturae, 1758) – European fingernail clam * Subgenus ''Nucleocyclas'' Alimov & Starobogatov, 1968 :* ''Sphaerium nucleus'' (Studer, 1820) :* ''Sphaerium ovale'' (André Étienne d'Audebert de Férussac, A. Férussac, 1807) * Subgenus ''Parasphaerium'' Alimov & Starobogatov, 1968 :*''Sphaerium nitidum'' Clessin, 1876 – Arctic fingernail clam * Subgenus ''Amesoda'' Rafinesque, 1820 :* ''Sphaerium rivicola'' (Lamarck, 1818) * Subgenus ''Cyrenastrum'' Bourguignat, 1854 :* ''Sphaerium solidum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphaerium Corneum
''Sphaerium corneum'', also known as the European fingernailclam, is a very small freshwater clam, an aquatic bivalve mollusk in the family Sphaeriidae, the fingernail clams. Description The shell is fairly globular and can grow up to 9–13.5 mm in size. The color of the shell is usually a brown to gray with the juveniles being a yellow color. Their shells exhibit striae, thin parallel rows of elevated lines. Revisiondate: 3/23/2007 Ecology These small clams are found in shallow, freshwater habitats with slow moving waters, including freshwater lakes, rivers and creeks. As with most bivalves, ''Sphaerium corneum'' is mainly a filter feeder and thus prefers more eutrophic waters that provide a greater food source. These clams have exhibited a unique ability to climb up plants and structures around their habitat to find more optimal locations for feeding. They also are known to deposit feed in times of low current or food availability. This species has shown a preference ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |