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Bathymodiolus Childressi
''Bathymodiolus childressi'' is a species of deepwater mussel, a marine bivalve mollusk species in the family Mytilidae, the mussels. Although this species has been known since 1985,Childress J.J., Fisher C.R., Brooks J.M., Kennicutt M.C., II, Bidigare R. & Anderson A. (1986) A methanotrophic marine molluscan symbiosis: mussels fueled by gas. Science, 233, 1306-1308. it was formally described as a species in 1998. Habitat This species lives in cold seeps in the Gulf of Mexico. ''Bathymodiolus childressi'' is stenothermal species living in temperatures ranging from 6.5 to 7.2 °C.Berger M. S. & Young C. M. (2006). "Physiological response of the cold-seep mussel ''Bathymodiolus childressi'' to acutely elevated temperature". ''Marine Biology'' 149(6): 1397-1402. However it was able to survive the temperature of 20 °C in the laboratory. Symbiosis This mussel harbors intracellular methanotrophic bacteria in its gills. The bacteria provide carbon to the mussel. Inter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruth Turner
Ruth Dixon Turner (1914 – April 30, 2000) was a pioneering U.S. marine biologist and malacologist. She was the world's expert on Teredinidae or shipworms, a taxonomic family of wood-boring bivalve mollusks which severely damage wooden marine installations. Turner held the Alexander Agassiz Professorship at Harvard University, and was a Curator of Malacology in the University's Museum of Comparative Zoology, where she also served as co-editor of the scientific journal '' Johnsonia''. She graduated from Bridgewater State College, earned a master's degree at Cornell University and a Ph.D. at Harvard ( Radcliffe College) where she specialized in shipworm research. Turner became one of Harvard's first tenured women professors in 1973, and was one of the most academically successful female marine researchers, publishing over 200 scientific articles and a book during her long career. She was also the first female scientist to use the deep ocean research submarine Alvin. Much ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Methanotroph
Methanotrophs (sometimes called methanophiles) are prokaryotes that metabolize methane as their source of carbon and chemical energy. They are bacteria or archaea, can grow aerobically or anaerobically, and require single-carbon compounds to survive. Methanotrophs are especially common in or near environments where methane is produced, although some methanotrophs can oxidize atmospheric methane. Their habitats include wetlands, soils, marshes, rice paddies, landfills, aquatic systems (lakes, oceans, streams) and more. They are of special interest to researchers studying global warming, as they play a significant role in the global methane budget, by reducing the amount of methane emitted to the atmosphere. Methanotrophy is a special case of methylotrophy, using single-carbon compounds that are more reduced than carbon dioxide. Some methylotrophs, however, can also make use of multi-carbon compounds; this differentiates them from methanotrophs, which are usually fastidious metha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathymodiolus
''Bathymodiolus'' is a genus of deep-sea mussels, marine bivalve molluscs in the family Mytilidae. Many of them contain intracelluar chemoautotrophic bacterial symbionts. Species Modern (non-fossil) species within the genus ''Bathymodiolus'' include: * '' Bathymodiolus childressi'' Gustafson, Lutz, Turner & Vrijenhoek, 1998 * ''Bathymodiolus japonicus'' Hashimoto & Okutani, 1994 * ''Bathymodiolus marisindicus'' Hashimoto, 2001 * ''Bathymodiolus platifrons'' Hashimoto & Okutani, 1994 * ''Bathymodiolus septemdierum'' Hashimoto & Okutani, 1994 * ''Bathymodiolus tangaroa'' Von Cossel & Marshall, 2003 * ''Bathymodiolus thermophilus'' Kenk & Wilson, 1985 There also are several fossil species, which are usually only tentatively assigned to hydrothermal vent and hydrocarbon seep-inhabiting mussel genera due to their conservative shell morphology and ongoing taxonomic revision of this group.Saether, K.P., Little, C.T.S., Campbell, K.A., Marshall, B.A., Collins, M. & Alfaro, A.C. 2010. Ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of California, Santa Barbara
The University of California, Santa Barbara (UC Santa Barbara or UCSB) is a Public university, public Land-grant university, land-grant research university in Santa Barbara County, California, Santa Barbara, California with 23,196 undergraduates and 2,983 graduate students enrolled in 2021–2022. It is part of the University of California 10-university system. Tracing its roots back to 1891 as an independent teachers' college, UCSB joined the University of California system in 1944, and is the third-oldest undergraduate campus in the system, after University of California, Berkeley, UC Berkeley and University of California, Los Angeles, UCLA. Located on a WWII-era Marine air station, UC Santa Barbara is organized into three undergraduate colleges (UCSB College of Letters and Science, College of Letters and Science, UCSB College of Engineering, College of Engineering, College of Creative Studies) and two graduate schools (Gevirtz Graduate School of Education and Bren School of E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Byssus
A byssus () is a bundle of filaments secreted by many species of bivalve mollusc that function to attach the mollusc to a solid surface. Species from several families of clams have a byssus, including pen shells (Pinnidae), true mussels (Mytilidae), and Dreissenidae. Filaments Byssus filaments are created by certain kinds of marine and freshwater bivalve mollusks, which use the byssus to attach themselves to rocks, substrates, or seabeds. In edible mussels, the inedible byssus is commonly known as the "beard", and is removed before cooking. Many species of mussels secrete byssus threads to anchor themselves to surfaces, with families including the Arcidae, Mytilidae, Anomiidae, Pinnidae, Pectinidae, Dreissenidae, and Unionidae. Mechanics The byssus, or byssal complex, is composed of multiple extracellular collagenous threads that are placed radially by the mussel from a central stem. Each thread is composed of three regions: a corrugated proximal region close to the mussel b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periostracum
The periostracum ( ) is a thin, organic coating (or "skin") that is the outermost layer of the shell of many shelled animals, including molluscs and brachiopods. Among molluscs, it is primarily seen in snails and clams, i.e. in gastropods and bivalves, but it is also found in cephalopods such as ''Allonautilus scrobiculatus''. The periostracum is an integral part of the shell, and it forms as the shell forms, along with the other shell layers. The periostracum is used to protect the organism from corrosion. The periostracum is visible as the outer layer of the shell of many molluscan species from terrestrial, freshwater, and marine habitats, and may be seen in land snails, river mussels, and other kinds of freshwater bivalves, as well as in many kinds of marine shelled molluscs. The word ''periostracum'' means "around the shell", meaning that the periostracum is wrapped around what is usually the more calcareous part of the shell. Technically, the calcareous part of the shel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periphyton
Periphyton is a complex mixture of algae, cyanobacteria, heterotrophic microbes, and detritus that is attached to submerged surfaces in most aquatic ecosystems. The related term Aufwuchs (German "surface growth" or "overgrowth") refers to the collection of small animals and plants that adhere to open surfaces in aquatic environments, such as parts of rooted plants. Periphyton serves as an important food source for invertebrates, tadpoles, and some fish. It can also absorb contaminants, removing them from the water column and limiting their movement through the environment. The periphyton is also an important indicator of water quality; responses of this community to pollutants can be measured at a variety of scales representing physiological to community-level changes. Periphyton has often been used as an experimental system in, e.g., pollution-induced community tolerance studies. Composition In both marine and freshwater environments, algae – particularly green algae and d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensory Organs Of Gastropods
The sensory organs of gastropods (snails and slugs) include olfactory organs, eyes, statocysts and mechanoreceptors. Gastropods have no sense of hearing.Chase R.: ''Sensory Organs and the Nervous System''. in Barker G. M. (ed.): ''The biology of terrestrial molluscs''. CABI Publishing, Oxon, UK, 2001, . 1–146, cited pages: 179–211. Olfactory organs In terrestrial gastropods the most important sensory organs are the olfactory organs which are located on the tips of the 4 tentacles. Some terrestrial gastropods can track the odor of food using their tentacles ( tropotaxis) and the wind ( anemotaxis). In opisthobranch marine gastropods, the chemosensory organs are two protruding structures on top of the head. These are known as rhinophores. An opisthobranch sea slug ''Navanax inermis'' has chemoreceptors on the sides of its mouth to track mucopolysaccharides in the slime trails of prey, and of potential mates. The freshwater snail '' Bithynia tentaculata'' is capabl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathynerita Naticoidea
''Bathynerita naticoidea'' is a species of small sea snail, a marine gastropod mollusc in the family Neritidae, the nerites. This species is endemic to underwater cold seeps (oil seeps and gas seeps) in the northern Gulf of Mexico and in the Caribbean. The possible placement of this species within the closely allied family Phenacolepadidae has been under discussion. Species from these habitats can be collected by manned submersibles or by remotely operated underwater vehicles. Distribution This species lives in cold seeps in the northern Gulf of Mexico and in the accretionary wedge of Barbados in the Caribbean in the upper continental slope, in depths from 400 to 2100 m. Examples of localities include: * "Bush Hill" (27°46.9478 N; 91°30.5266 W) * methane seep "Brine Pool NR-1" in depth 650 m (27°43.415 N; 91°16.756 W) [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stenothermal
A stenotherm (from Greek στενός ''stenos'' "narrow" and θέρμη ''therme'' "heat") is a species or living organism only capable of living or surviving within a narrow temperature range. This type of temperature specialization is often seen in organisms that live in environments where the temperature is relatively stable, such as in deep sea environments or in polar regions. The opposite of a stenotherm is a eurytherm, an organism that can function at a wide range of different body temperatures. Eurythermic organisms are typically found in environments where the temperature varies more significantly, such as in temperate or tropical regions. The size, shape, and composition of an organism's body can affect its temperature regulation, with larger organisms tending to have a more stable internal temperature than smaller organisms. Examples ''Chionoecetes opilio'' is a stenothermic organism, and temperature affects its biology throughout its life history, from embryo to adult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malacologia
''Malacologia'' is a peer-reviewed scientific journal in the field of malacology, the study of mollusks. The journal publishes articles in the fields of molluscan systematics, ecology, population ecology, genetics, molecular genetics, evolution, and phylogenetics. The journal specializes in publishing long papers and monographs. The journal publishes at least one, sometimes two, volumes of about 400 pages per year, which may consist of 1 or 2 issues. According to the ''Journal Citation Reports,'' its 2019 impact factor is 13.5. This ranks ''Malacologia'' 1st out of 145 listed journals in the category "Zoology". The journal started publication in 1962. See also *''Archiv für Molluskenkunde'' *''Basteria'' *''Journal of Conchology'' *''Journal of Molluscan Studies The ''Journal of Molluscan Studies'' is the peer-reviewed scientific journal of the Malacological Society of London, covering research in malacology. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold Seep
A cold seep (sometimes called a cold vent) is an area of the ocean floor where hydrogen sulfide, methane and other hydrocarbon-rich fluid seepage occurs, often in the form of a brine pool. ''Cold'' does not mean that the temperature of the seepage is lower than that of the surrounding sea water. On the contrary, its temperature is often slightly higher. The "cold" is relative to the very warm (at least ) conditions of a hydrothermal vent. Cold seeps constitute a biome supporting several endemic species. Cold seeps develop unique topography over time, where reactions between methane and seawater create carbonate rock formations and reefs. These reactions may also be dependent on bacterial activity. Ikaite, a hydrous calcium carbonate, can be associated with oxidizing methane at cold seeps. Types Types of cold seeps can be distinguished according to the depth, as shallow cold seeps and deep cold seeps. Cold seeps can also be distinguished in detail, as follows: * oil/gas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
