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Fragum
Fragum is a genus of cockles, marine bivalve molluscs in the family Cardiidae. Members of the genus have characteristic thick, sculptured shells and live buried in sand, extending their siphons to the surface to feed and breathe. They are found in the Indo-Pacific region and the Red Sea. Species The genus includes the following species according to the World Register of Marine Species: *''Fragum erugatum'' (Tate, 1889) *'' Fragum fragum'' (Linnaeus, 1758) *''Fragum grasi'' Ter Poorten, 2009 *''Fragum mundum'' (Reeve, 1845) *'' Fragum nivale'' (Reeve, 1845) *''Fragum scruposum'' (Deshayes, 1855) *''Fragum sueziense'' (Issel, 1869) *'' Fragum unedo'' (Linnaeus, 1758 Events January–March * January 1 – Swedish biologist Carl Linnaeus (Carl von Linné) publishes in Stockholm the first volume (''Animalia'') of the 10th edition of Systema Naturae, 10th edition of ''Systema Naturae'', the sta ...) References Cardiidae Bivalve genera {{bivalve-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fragum Erugatum
''Fragum erugatum'' is a small species of cockle, a marine bivalve mollusc in the family Cardiidae. It is found in the shallow seas off the coast of Western Australia. It is commonly known as the Hamelin cockle, cardiid cockle or heart cockle. Taxonomy This species was first described by Ralph Tate in 1889 as ''Fragum erugatum''. More recently, it has been given several other names but these have since been synonymized with ''Fragum erugatum''. Some authorities now consider that it is sufficiently distinct from other members of the genus ''Fragum'' as to warrant being placed in a genus of its own as ''Microfragum erugatum''. Description ''Fragum erugatum'' is a small species of cockle growing to a length of about . The valves are dome-shaped, white and translucent. Distribution and habitat ''Fragum erugatum'' is native to warm shallow waters in Western Australia. Its range extends from the Dampier Archipelago to the Houtman Abrolhos Islands near Geraldton. It is particularly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fragum Unedo
''Fragum unedo'' is a species of cockle, a marine bivalve mollusc in the family Cardiidae, commonly known as the Pacific strawberry cockle. It is found in tropical seas in the Indo-Pacific region and the empty shells are prized for use in decorative crafts.''Fragum unedo'' (Linnaeus, 1758) SeaLifeBase. Retrieved 2011-10-21. Description ''Fragum unedo'' can grow to 6.5 cm (2.5 in) in length but 4 cm (1.5 in) is a more usual size. The two domed are equal in size and asymmetric, with the beaks in front of the mid line. The outline is sub-quadrate with steeply sloping dorsal margins. The posterior margin is long and almost straight while t ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fragum Fragum
''Fragum fragum'' is a species of cockle, a marine bivalve mollusc in the family Cardiidae. It is commonly known as the white strawberry cockle and is found in the western Indo-Pacific Ocean. It is the type species of the genus ''Fragum''. Description ''Fragum fragum'' grows to a length of . It has a pair of white, thick, sculptured valves with a nacreous coating on the interior. Distribution and habitat ''Fragum fragum'' is native to the tropical western Indo-Pacific Ocean. Its range extends from the East African coast and Madagascar to Polynesia, Japan and northern Australia. It is found at depths down to and lives buried in the sandy seabed. Biology ''Fragum fragum'' lives buried in sand, extending its siphons to the surface to draw in water in order to filter feed and breathe. It has a symbiotic relationship with certain micro-algae, ''zooxanthellae'', which live in the mantle and other soft tissues. Its symbionts need a lower light intensity for photosynthesis to take plac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fragum Nivale
''Fragum nivale'' is a species of cockle in the family Cardiidae, that lives in the Western Indian Ocean, in benthic environments. It has a body length of 1.2 cm, and the embryos are developed into a swimming trocophore larvae, that resemble an immature clam Clam is a common name for several kinds of bivalve molluscs. The word is often applied only to those that are edible and live as infauna, spending most of their lives halfway buried in the sand of the seafloor or riverbeds. Clams have two she .... References Bivalves described in 1845 Cardiidae {{bivalve-stub Molluscs of the Indian Ocean ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cockle (bivalve)
A cockle is an edible marine bivalve mollusc. Although many small edible bivalves are loosely called cockles, true cockles are species in the family Cardiidae. MolluscaBase eds. (2022). MolluscaBase. Cardiidae Lamarck, 1809. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=229 on 2022-02-09 True cockles live in sandy, sheltered beaches throughout the world. The distinctive rounded shells are bilaterally symmetrical, and are heart-shaped when viewed from the end. Numerous radial, evenly spaced ribs are a feature of the shell in most but not all genera (for an exception, see the genus '' Laevicardium'', the egg cockles, which have very smooth shells). The shell of a cockle is able to close completely (i.e., there is no "gap" at any point around the edge). Though the shell of a cockle may superficially resemble that of a scallop because of the ribs, cockles can be distinguished from scallops morphologically in that coc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bivalvia
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 o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusca
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The g ... [...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] |
Peter Friedrich Röding
Peter Friedrich Röding (17 June 1767 – 8 June 1846) was a German malacologist who lived in Hamburg. Very little is known about this naturalist. Many of Röding's descriptions (often simply a German rendition of the Latin binomial name) are of species which were first named by earlier authors such as Johann Hieronymus Chemnitz, Friedrich Wilhelm Martini and Martin Lister. Röding's references to pre-existing descriptions and figures make these names also valid, since they are unequivocally recognizable, and were (after Röding) subsequently adopted by many later authors. Museum Boltenianum He was the principal Author citation (zoology), author of a 1798 catalogue of an important mollusc collection. The catalogue was entitled ''Museum Boltenianum sive catalogus cimeliorum e tribus regnis naturæ quæ olim collegerat Joa. Fried Bolten, M. D. p. d. per XL. annos proto physicus Hamburgensis. Pars secunda continens conchylia sive testacea univalvia, bivalvia & multivalvia'' and w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphon (mollusc)
A siphon is an anatomical structure which is part of the body of aquatic molluscs in three classes: Gastropoda, Bivalvia and Cephalopoda (members of these classes include saltwater and freshwater snails, clams, octopus, squid and relatives). Siphons in molluscs are tube-like structures in which water (or, more rarely, air) flows. The water flow is used for one or more purposes such as locomotion, feeding, respiration, and reproduction. The siphon is part of the mantle of the mollusc, and the water flow is directed to (or from) the mantle cavity. A single siphon occurs in some gastropods. In those bivalves which have siphons, the siphons are paired. In cephalopods, there is a single siphon or funnel which is known as a hyponome. In gastropods In some (but not all) sea snails, marine gastropod molluscs, the animal has an anterior extension of the mantle called a siphon, or inhalant siphon, through which water is drawn into the mantle cavity and over the gill for r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indo-Pacific
The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the seas connecting the two in the general area of Indonesia. It does not include the temperate and polar regions of the Indian and Pacific oceans, nor the Tropical Eastern Pacific, along the Pacific coast of the Americas, which is also a distinct marine realm. The term is especially useful in marine biology, ichthyology, and similar fields, since many marine habitats are continuously connected from Madagascar to Japan and Oceania, and a number of species occur over that range, but are not found in the Atlantic Ocean. The region has an exceptionally high species richness, with the world's highest species richness being found in at its heart in the Coral Triangle, and a remarkable gradient of decreasing species richness radiating outwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
