|
Sphaerium Ovale
''Sphaerium ovale'' is a freshwater bivalve of the family Sphaeriidae Sphaeriidae is a family of small to minute freshwater bivalve molluscs in the order Sphaeriida. In the US, they are commonly known as pea clams or fingernail clams. Heard, William H. 1977. Reproduction of fingernail clams (Sphaeriidae: ''Sphaeri .... Description Biology Distribution and conservation status * Not mentioned in IUCN Red List – Not Evaluated (NE) * GermanyGlöer P. & Meier-Brook C., 2003: Süsswassermollusken. DJN, pp. 134, page 109, References ovale Bivalves described in 1807 {{Sphaeriidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
André Étienne D'Audebert De Férussac
Baron André Étienne Justin Pascal Joseph François d'Audebert de Férussac (30 December 1786 – 21 January 1836) was a French naturalist best known for his studies of molluscs. (Two of his given names are sometimes spelt Just or Juste instead of Justin, and d'Audibert, d'Audebard, or d'Audeberd instead of "d'Audebert".) He was born in Chartron, near Lauzerte in the province of Quercy (now in Tarn-et-Garonne), the son of Jean Baptiste Louis d'Audibert de Férussac and Marie Catherine Josèphe de Rozet, and was professor of geography and statistics at the École d'état-major in Paris. Taxa Férussac named and described numerous taxa of gastropods, including: * ''Cochlodina'' Férussac, 1821, a land snail genus * ''Helicostyla ''Helicostyla'' is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Helicostylinae of the family Camaenidae. ''Helicostyla'' is the type genus of the subfamily Helicostylinae. MolluscaBase e . ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bivalve
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bivalves have no head and they lack some usual molluscan organs, like the radula and the odontophore. They include the clams, oysters, cockles, mussels, scallops, and numerous other families that live in saltwater, as well as a number of families that live in freshwater. The majority are filter feeders. The gills have evolved into ctenidia, specialised organs for feeding and breathing. Most bivalves bury themselves in sediment, where they are relatively safe from predation. Others lie on the sea floor or attach themselves to rocks or other hard surfaces. Some bivalves, such as the scallops and file shells, can swim. The shipworms bore into wood, clay, or stone and live inside these substances. The shell of a bivalve is composed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphaeriidae
Sphaeriidae is a family of small to minute freshwater bivalve molluscs in the order Sphaeriida. In the US, they are commonly known as pea clams or fingernail clams. Heard, William H. 1977. Reproduction of fingernail clams (Sphaeriidae: ''Sphaerium'' and ''Musculium''). Malacologia, 16: 421-455. Genera Genera: * Euperinae ** '' Byssanodonta'' d'Orbigny, 1846 ** '' Eupera'' Bourguignat, 1854 * Sphaeriinae ** '' Afropisidium'' Kuiper, 1962 ** '' Euglesa'' Jenyns, 1832 ** '' Musculium'' Link, 1807 ** '' Odhneripisidium'' Kuiper, 1962 ** ''Pisidium'' C. Pfeiffer, 1821 ** '' Sphaerium'' Scopoli, 1777 * fossils ** †'' Megasphaerioides'' Komatsu, J.-H. Chen & Q.-F. Wang, 2003 ** †'' Protosphaerium'' Hocknull, 2000 ** †'' Sphaericoncha'' Kolesnikov, 1980 Biology and ecology Sphaeriidae are hermaphrodites with internal fertilization. Developing young are incubated within their mother (ovoviviparity), and newborn clams look like miniature copies of the adults. Parasites and/or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphaerium
''Sphaerium'' is a genus of very small freshwater clams, aquatic bivalve molluscs in the 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'' Scopoli, 1777 :*'' Sphaerium corneum'' (Linnaeus, 1758) – European fingernail clam * Subgenus ''Nucleocyclas'' Alimov & Starobogatov, 1968 :* '' Sphaerium nucleus'' (Studer, 1820) :* ''Sphaerium ovale'' ( 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'' (Normand, 1844) * Without subgenus :*'' Sphaerium asiaticum'' (Martens, 1864) :* ''Sphaerium bequaerti ''Sphaerium bequaerti'' is a sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
