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Trivia Monacha
''Trivia monacha'', also known as the European cowrie or spotted cowrie, is a species of small sea snail, a marine gastropod mollusc in the family Triviidae, the trivias. The name ''Trivia'' means "common" and the word ''monacha'' means "solitary". It is worth comparing this species with the similar species ''Trivia arctica'', the northern cowrie. Shell description The shell of this species is glossy, convolute and lemon-shaped, with 20-30 transverse ridges. The dorsal part of the shell is a pinkish or reddish-brown with three characteristic darker spots in mature individuals, one spot anterior, the other posterior and one in the centre, all situated along a central line. Juvenile shells are all white or light-coloured. The apertural side is white and flattened. The aperture is narrow and runs along the whole length of the shell. At the ends it turns to the left in the direction of the swollen body whorl. The transverse ridges are strong and often bifurcate. The ones at th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trivia Monacha
''Trivia monacha'', also known as the European cowrie or spotted cowrie, is a species of small sea snail, a marine gastropod mollusc in the family Triviidae, the trivias. The name ''Trivia'' means "common" and the word ''monacha'' means "solitary". It is worth comparing this species with the similar species ''Trivia arctica'', the northern cowrie. Shell description The shell of this species is glossy, convolute and lemon-shaped, with 20-30 transverse ridges. The dorsal part of the shell is a pinkish or reddish-brown with three characteristic darker spots in mature individuals, one spot anterior, the other posterior and one in the centre, all situated along a central line. Juvenile shells are all white or light-coloured. The apertural side is white and flattened. The aperture is narrow and runs along the whole length of the shell. At the ends it turns to the left in the direction of the swollen body whorl. The transverse ridges are strong and often bifurcate. The ones at th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trivia Arctica
''Trivia arctica'', the northern cowrie, is a species of small sea snail, a marine gastropod mollusc in the family Triviidae, the trivias. This is a similar species to ''Trivia monacha'' and it often occurs in the same areas. The name ''Trivia'' means "common" and the word ''arctica'' means "of the arctic". Distribution This species occurs from the Mediterranean Sea to the Orkney north of Scotland and Norway. It is more common in the north. In the British Isles the shells are known as "cowries", except in Caithness, Orkney and Shetland where they are called Groatie Buckies. In the Isles of Scilly the shell is referred to as a Guinea Money. Habitat This species usually lives below low tide, in other words is sublittoral, but the empty shells of this species are often washed up onto beaches. In its northern range is found at depths of 100 m and in it southern range at depths up to 1000 m. Description The shell is glossy and lemon-shaped, with 20-30 transverse ridges. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emanuel Mendes Da Costa
Emanuel Mendes da Costa (5 June 1717 – 31 May 1791) was an England, English Botany, botanist, natural history, naturalist, Philosophy, philosopher, and collector of valuable notes and of manuscripts, and of anecdotes of the literati. Da Costa became infamous for embezzling funds while working at the Royal Society in London and was imprisoned. Biography Da Costa came from a Sephardi family that had moved to England in the 1600s from Portugal. His parents were Abraham and Esther (with the Christian names of John and Joanna). Abraham is thought to have been in the diamond business. A brother became a wealthy businessman but Emanuel worked in the office of a notary and qualified from the Scriveners' Company in 1762 but had taken an interest in natural history from around 1736. He began to trade in shells, corals and fossils and corresponded with Carl Linnaeus, Sir Hans Sloane and other naturalists of the period. Da Costa was elected one of the first Jewish Fellows of the Royal Soci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veliger
A veliger is the planktonic larva of many kinds of sea snails and freshwater snails, as well as most bivalve molluscs (clams) and tusk shells. Description The veliger is the characteristic larva of the gastropod, bivalve and scaphopod taxonomic classes. It is produced following either the embryonic or trochophore larval stage of development. In bivalves the veliger is sometimes referred to as a D-stage (early in its development) or pediveliger (late in its development) larva. This stage in the life history of these groups is a free-living planktonic organism; this mode of life potentially enhances dispersal to new regions far removed from the adult mollusks that produced the larvae. The general structure of the veliger includes a shell that surrounds the visceral organs of the larva (e.g., digestive tract, much of the nervous system, excretory organs) and a ciliated velum that extends beyond the shell as a single or multi-lobed structure used for swimming and particula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radula
The radula (, ; plural radulae or radulas) is an anatomical structure used by molluscs for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus. The radula is unique to the molluscs, and is found in every class of mollusc except the bivalves, which instead use cilia, waving filaments that bring minute organisms to the mouth. Within the gastropods, the radula is used in feeding by both herbivorous and carnivorous snails and slugs. The arrangement of teeth ( denticles) on the radular ribbon varies considerably from one group to another. In most of the more ancient lineages of gastropods, the radula is used to graze, by scraping diatoms and other microscopic algae off rock surfaces and other substrates. Predatory marine snails such as the Naticidae use the radula plus an acidic secretion to bore through the shell of other molluscs. Other predatory marine snails ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proceedings Of The Malacological Society
The ''Journal of Molluscan Studies'' is the peer-reviewed scientific journal of the Malacological Society of London, covering research in malacology.About the journal accessed 6 December 2010. Previous names of this journal include ''Proceedings of the Malacological Society'', and ''Proceedings of the Malacological Society of London'' (abbreviated as ''Proc. Malacol. Soc. Lond.''). Abstracting and indexing The journal is abstracted and indexed byAquatic Sciences and Fisheries Abstracts
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Alfred James Peile
Alfred James Peile (5 August 1868 – 13 July 1948) was a British army officer and amateur malacologist who was an expert on the radulae of gastropods. Life Peile was educated at Cheltenham College and trained at the Royal Military Academy, Woolwich. During his military career he served in India, Bermuda and South Africa, as well as in France during the First World War. Following retirement from the army with the rank of Lieutenant Colonel in 1920, Peile was an honorary curator at the Department of Mollusca at the Natural History Museum in London, and published over fifty malacological papers. He was also President of the Malacological Society of London 1925–1927, and of the Conchological Society The Conchological Society of Great Britain and Ireland is a British-based society concerned with the study of molluscs and their shells. It was founded in 1876, and is one of the oldest such societies in the world. It is a registered UK charity ( ... 1935–1937. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Squirt
Ascidiacea, commonly known as the ascidians, tunicates (in part), and sea squirts (in part), is a polyphyletic class (biology), class in the subphylum Tunicate, Tunicata of sac-like marine (ocean), marine invertebrate filter feeders. Ascidians are characterized by a tough outer "tunic" made of a polysaccharide. Ascidians are found all over the world, usually in shallow water with salinity, salinities over 2.5%. While members of the Thaliacea and Larvacea (Appendicularia) swim freely like plankton, sea squirts are Sessility (zoology), sessile animals after their larval phase: they then remain firmly attached to their Substrate (marine biology), substratum, such as rocks and shells. There are 2,300 species of ascidians and three main types: solitary ascidians, social ascidians that form clumped communities by attaching at their bases, and compound ascidians that consist of many small individuals (each individual is called a zooid) pyrosome, forming colonies up to several meters in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diplosoma (tunicate)
''Diplosoma'' is a genus of tunicates belonging to the family Didemnidae Didemnidae, or Didemnidæ, is a family of colonial tunicates in the order Enterogona. These marine animals are found in shallow water on the seabed. Members of this family have small zooids that form encrusting colonies. The body of each zooid i .... The genus has cosmopolitan distribution. Species Species: *''Diplosoma abbotti'' *''Diplosoma aggregatum'' *''Diplosoma antarcticum'' *''Diplosoma ata'' *''Diplosoma carnosum'' *''Diplosoma citrinum'' *''Diplosoma fecundum'' *''Diplosoma gelatinosa'' *''Diplosoma gemmifera'' *''Diplosoma glandulosum'' *''Diplosoma gumavirens'' *''Diplosoma handi'' *''Diplosoma hitatti'' *''Diplosoma lafargueae'' *''Diplosoma listerianum'' *''Diplosoma longinquum'' *''Diplosoma lukini'' *''Diplosoma marsupiale'' *''Diplosoma matie'' *''Diplosoma migrans'' *''Diplosoma modestum'' *''Diplosoma multifidum'' *''Diplosoma multipapillata'' *''Diplosoma multit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botrylloides
''Botrylloides'' is a genus of ascidian tunicates in the family Styelidae. Description Like ''Botryllus'', ''Botrylloides'' are flat sheets of organisms which can be found covering ropes, boat hulls, horseshoe crabs, seaweeds, and any still or slow-moving object in saltwater. Also both are considered to be invasive Ascidians, found in many ports around the world. Invasive tunicates such as these, ''Didemnum'' sp., and ''Styela clava'' are a problem for shellfish and other marine life populations, and cause fouling of boats and piers. Species within the genus ''Botrylloides'' include:Sanamyan, K. (2015)''Botrylloides'' Milne Edwards, 1841 .In: Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira Da Rocha, R.; Swalla, B.J.; Turon, X. (2015) Ascidiacea World Database. Accessed through: World Register of Marine Species on 2015-12-23 * ''Botrylloides anceps'' (Herdman, 1891) * ''Botrylloides aureum'' (Sars, 1851) * ''Botrylloides chevalense'' Herdman, 1906 * ''Botrylloide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascidian
Ascidiacea, commonly known as the ascidians, tunicates (in part), and sea squirts (in part), is a polyphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders. Ascidians are characterized by a tough outer "tunic" made of a polysaccharide. Ascidians are found all over the world, usually in shallow water with salinities over 2.5%. While members of the Thaliacea and Larvacea (Appendicularia) swim freely like plankton, sea squirts are sessile animals after their larval phase: they then remain firmly attached to their substratum, such as rocks and shells. There are 2,300 species of ascidians and three main types: solitary ascidians, social ascidians that form clumped communities by attaching at their bases, and compound ascidians that consist of many small individuals (each individual is called a zooid) forming colonies up to several meters in diameter. Sea squirts feed by taking in water through a tube, the oral siphon. The water enters the mouth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
