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Bullidae
''Bulla'' is a genus of medium to large hermaphrodite sea snails, shelled marine opisthobranch gastropod molluscs. These herbivorous snails are in the order Cephalaspidea.Gofas, S. (2010). Bulla Linnaeus, 1758. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=137716 on 2011-05-04 These snails are popularly known as "bubble snails" because the shell of some of the species is very inflated indeed, almost spherical in shape, and is also very thin and light. According to some experts, ''Bulla'' is currently the only genus in the family Bullidae, which in turn is the only member of the superfamily Bulloidea. In addition to its taxonomic interest, ''Bulla'' — particularly '' Bulla gouldiana'' — has served as an important model organism in circadian biology research, where it has been used to investigate circadian rhythms, photoentrainment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulla Gouldiana
''Bulla gouldiana'', the California bubble, Gould's bubble or cloudy bubble snail, is a species of sea snail, a marine gastropod mollusc in the family Bullidae ''Bulla'' is a genus of medium to large hermaphrodite sea snails, shelled marine opisthobranch gastropod molluscs. These herbivorous snails are in the order Cephalaspidea.Gofas, S. (2010). Bulla Linnaeus, 1758. In: Bouchet, P.; Gofas, S.; Rosen ..., the bubble snails. It is found in shallow water on sheltered coasts of the eastern Pacific Ocean. Description ''Bulla gouldiana'' has a semi-transparent, paper-thin, globose shell that is brown or pale violet. The head, mantle and foot are yellowish-brown with mottled whitish dots. The aperture is wide anteriorly and narrow posteriorly. The egg mass is a yellow to orange tangled string of jelly, containing oval capsules. Each one contains up to 25 eggs, which develop into veliger larvae. Distribution ''Bulla gouldiana'' is found in shallow water in estuaries and sheltered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulloidea
Bulloidea is a superfamily of sea snails, or bubble snails, marine gastropod mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...s.Bouchet, P. (2010). Bulloidea Gray, 1827. In: MolluscaBase (2016). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=411887 on 2016-05-23 Families * Acteocinidae Dall, 1913 * Bullidae Gray, 1827 * Retusidae Thiele, 1925(s.s.) * Rhizoridae Dell, 1952 ; Families brought into synonymy: * Bullariidae Dall, 1908: synonym of Bullidae Gray, 1827 * Vesicidae J. Q. Burch, 1945: synonym of Bullidae Gray, 1827 * Volvulellidae Chaban, 2000: synonym of Rhizoridae Dell, 1952 * Volvulidae Locard, 1886: synonym of Rhizoridae Dell, 1952 References Oskars T.R., Bouchet P. & Malaquias M.A. (2015). A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalaspidea
The order Cephalaspidea, also known as the headshield slugs and bubble snails, is a major taxon of sea slugs and bubble snails, marine (ocean), marine gastropod mollusks within the larger clade Euopisthobranchia. Bubble shells is another common name for these families of marine gastropods, some of which have thin bubble-like shells. This clade contains more than 600 species. Members of this worldwide clade used to be considered the most ancestral of the opisthobranchs, but now they are considered as derived and specialized members of the Euthyneura Spengel, 1881. Headshield slugs are the most morphologically diverse group of all the opisthobranchs. Anatomy The vast majority possess a shell, although it may be reduced or internal. They have a well-developed headshield, a characteristic broadening at the head, which is used to plow beneath the surface of the sand. This headshield prevents the sand entering the mantle cavity. There is a muscular foot with or without parapodia (f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulla Ampulla
''Bulla ampulla'' is a species of gastropods belonging to the family Bullidae. The species has cosmopolitan distribution In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and en ... (except the Americas). References Bullidae Taxa named by Carl Linnaeus Gastropods described in 1758 {{Heterobranchia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulla Striata
''Bulla striata'', commonly known as the common Atlantic bubble or striate bubble, is a species of sea snail, a marine gastropod mollusc in the family Bullidae ''Bulla'' is a genus of medium to large hermaphrodite sea snails, shelled marine opisthobranch gastropod molluscs. These herbivorous snails are in the order Cephalaspidea.Gofas, S. (2010). Bulla Linnaeus, 1758. In: Bouchet, P.; Gofas, S.; Rosen ..., the bubble snails. Bulla striata var. adansoni 01.jpg, var. ''adansoni'' File:Bulla striata 02.jpg, Fossil (Pliocene) References {{Taxonbar, from=Q962379 Bullidae Gastropods described in 1792 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coquille De Bulla Vernicosa
Coquille, the French word for "shell" (like an oyster shell), can refer to: People * Coquille people, a Native American tribe in Oregon * Coquille Indian Tribe, a federally recognized Native American tribal entity in Oregon * Guy Coquille (1523–1603), French jurist Places * Coquille, Oregon, a city in the U.S. state of Oregon * La Coquille, a village and commune in the Dordogne département of western France * Coquille River (Oregon), a river in Oregon * Coquille River (Normandin River), a tributary of Nicabau Lake in Quebec, Canada Ships * ''Coquille'' (steamboat), a 1908 propeller-driven steamboat in Oregon, United States * French frigate ''Coquille'' (1794), French Navy ship later renamed HMS ''Coquille'' * French ship ''Astrolabe'' (1811), originally christened ''Coquille'' Other uses * Coquilles st jacques, "Shell of Saint James", in French, the scallop itself, as well as the preparation of scallops in cream sauce * Coquille, a dialect of the Tututni language Tu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylogeny
A phylogenetic tree or phylogeny is a graphical representation which shows the evolutionary history between a set of species or Taxon, taxa during a specific time.Felsenstein J. (2004). ''Inferring Phylogenies'' Sinauer Associates: Sunderland, MA. In other words, it is a branching diagram or a tree (graph theory), tree showing the evolutionary relationships among various biological species or other entities based upon similarities and differences in their physical or genetic characteristics. In evolutionary biology, all life on Earth is theoretically part of a single phylogenetic tree, indicating common ancestry. Phylogenetics is the study of phylogenetic trees. The main challenge is to find a phylogenetic tree representing optimal evolutionary ancestry between a set of species or taxa. computational phylogenetics, Computational phylogenetics (also phylogeny inference) focuses on the algorithms involved in finding optimal phylogenetic tree in the phylogenetic landscape. Phylogene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radula
The radula (; : radulae or radulas) is an anatomical structure used by mollusks 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 mollusks, and is found in every class of mollusk 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 mollusks. Other predatory marine snails, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod Shell
The gastropod shell is part of the body of many gastropods, including snails, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, ostracum, is typically made of calcium carbonate (CaCO3) precipitated into an organic matrix ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladistics
Cladistics ( ; from Ancient Greek 'branch') is an approach to Taxonomy (biology), biological classification in which organisms are categorized in groups ("clades") based on hypotheses of most recent common ancestry. The evidence for hypothesized relationships is typically shared derived (phylogenetics), derived characteristics (synapomorphies) that are not present in more distant groups and ancestors. However, from an empirical perspective, common ancestors are inferences based on a cladistic hypothesis of relationships of taxa whose Phenotypic trait, character states can be observed. Theoretically, a last common ancestor and all its descendants constitute a (minimal) clade. Importantly, all descendants stay in their overarching ancestral clade. For example, if the terms ''worms'' or ''fishes'' were used within a ''strict'' cladistic framework, these terms would include humans. Many of these terms are normally used Paraphyly, paraphyletically, outside of cladistics, e.g. as a 'E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apex (mollusc)
In anatomy, an apex (adjectival form: apical) is part of the mollusc shell, shell of a mollusk. The apex is the pointed tip (the oldest part) of the shell of a gastropod, scaphopod, or cephalopod. The apex is used in end-blown conch (instrument), conches. Gastropods The word "apex" is most often used to mean the tip of the spire (mollusc), spire of the shell of a gastropod. The apex is the first-formed, and therefore the oldest, part of the shell. To be more precise, the apex would usually be where the tip of the embryonic shell or protoconch is situated, if that is still present in the adult shell (often it is lost or eroded away). Coiled gastropod shells The phrase apical whorls, or protoconch, means the whorls that constitute the embryonic shell at the apex of the shell, especially when this is clearly distinguishable from the later whorls of the shell, otherwise known as the teleoconch. Comparison of the apical part and the whole shell of ''Otukaia kiheiziebisu'': File:Cal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operculum (gastropod)
An operculum (; ) is a corneous or calcareous anatomical structure like a trapdoor that exists in many (but not all) groups of sea snails and freshwater snails, and also in a few groups of land snails, including the Helicinidae, Cyclophoridae, Aciculidae, Maizaniidae, Pomatiidae, etc. The operculum is attached to the upper surface of the foot and in its most complete state, it serves as a sort of "trapdoor" to close the aperture (mollusc), aperture of the shell when the soft parts of the animal are retracted. The shape of the operculum varies greatly from one family of gastropods to another. It is fairly often circular, or more or less oval in shape. In species where the operculum fits snugly, its outline corresponds exactly to the shape of the aperture (mollusc), aperture of the shell and it serves to seal the entrance of the shell. Many families have opercula that are reduced in size, and which are not capable of closing the shell aperture. Opercula have sometimes been modifie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
