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Endozoicomonas Coralli
''Endozoicomonas'' is a genus of Gram-negative, aerobic or facultatively anaerobic, chemoorganotrophic, rod-shaped, marine bacteria from the family of Hahellaceae. ''Endozoicomonas'' are symbionts of marine animals. Scientific History The genus was firstly proposed in 2007 after isolating an unknown Gammaproteobacteria from the sea slug ''Elysia ornata''. Called '' E. numazuensis,'' it was the first of many diverse species now known, and was collected from seawater off the coast of Izu-Miyake Island, Japan, at a depth of 15 m. Many new species have been identified after this: * In 2010, researchers from different Asian universities isolated '' E. montiporae'' from the encrustating pores of coral species ''Montipora aequituberculata,'' in Taiwan, and a scientific team of the University of Queensland, Australia, discovered many unidentified Gammaproteobacteria symbionts were closely related to ''Endozoicomonas'' as well during that same year. * More or less in the same period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacteria
Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria are vital in many stages of the nutrient cycle by recycling nutrients such as the fixation of nitrogen from the atmosphere. The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process. In the biological communities surrounding hydrothermal vents and cold seeps, extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. Bacteria also live in symbiotic and parasitic relationsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gram-negative Bacteria
Gram-negative bacteria are bacteria that do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. They are characterized by their cell envelopes, which are composed of a thin peptidoglycan cell wall sandwiched between an inner cytoplasmic cell membrane and a bacterial outer membrane. Gram-negative bacteria are found in virtually all environments on Earth that support life. The gram-negative bacteria include the model organism ''Escherichia coli'', as well as many pathogenic bacteria, such as ''Pseudomonas aeruginosa'', '' Chlamydia trachomatis'', and ''Yersinia pestis''. They are a significant medical challenge as their outer membrane protects them from many antibiotics (including penicillin), detergents that would normally damage the inner cell membrane, and lysozyme, an antimicrobial enzyme produced by animals that forms part of the innate immune system. Additionally, the outer leaflet of this membrane comprises a complex lipopol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrina Pectinata
''Atrina pectinata'' is a species of bivalves belonging to the family Pinnidae. The species is found in the Old World The "Old World" is a term for Afro-Eurasia that originated in Europe , after Europeans became aware of the existence of the Americas. It is used to contrast the continents of Africa, Europe, and Asia, which were previously thought of by the .... They are important in commercial fishing in Asia. They have the common name of pen shells''. References Pinnidae Taxa named by Carl Linnaeus Bivalves described in 1767 Edible molluscs {{Bivalve-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plexaura
Medical Research Plexaura is a coral that has a large amount of prostaglandins making it a great natural source of a compound called Prostaglandin A2. Prostaglandins can be extracted from Plexaura using dichloromethane/methanol and a rotary evaporator.Research indicates that Prostaglandin A2 may have activity against cancer. Under laboratory conditions prostaglandin A2 was able to inhibit enzymes present in some cancer cells. Prostaglandin A2 has shown to have cytotoxic activity towards both breast cancer and lung cancer cells. Treatment with prostaglandin A2 was also found to have major benefits for lung endothelial cells. Increasing recovery rates, decreasing inflammation and enhancing the endothelial cell barrier. This compound may have the potential to help people suffering from a respiratory infection recover quicker and easier with less chance of another infection due to the strengthening of the endothelial cell barrier. ''Plexaura'' is a genus of gorgonian-type octoc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eunicea
''Eunicea'' is a genus of gorgonian-type octocorals in the family Plexauridae. These branched octocorals typically have knobby protuberances from which the polyps protrude. They are often stiffened by purple sclerites and some colonies, in brightly lit back-reef areas are purple, though most colonies are brown or grey. The polyps in some species are large and feathery in appearance. The growth of these corals is rapid and they can be kept in a reef aquarium A reef aquarium or reef tank is a marine aquarium that prominently displays live corals and other marine invertebrates as well as fish that play a role in maintaining the tropical coral reef environment. A reef aquarium requires appropriatel .... Species The World Register of Marine Species lists these species: *'' Eunicea aspera'' Duchassaing & Michelotti, 1860 *'' Eunicea asperula'' Milne Edwards & Haime, 1857 *'' Eunicea calyculata'' (Ellis & Solander, 1786) *'' Eunicea castelnaudi'' Milne Edwards & Haime, 1857 *' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montipora Aequituberculata
''Montipora aequituberculata'' is a species of stony coral in the family Acroporidae. It is a common coral in shallow water in the Indo-Pacific region. Distribution and habitat ''Montipora aequituberculata'' is native to the Indo-Pacific region. Its range extends from the Red Sea and Gulf of Aden, through the Indian Ocean to Japan, the East China Sea, Australia and the west and central Pacific. It is found on the upper parts of reef slopes where it may be the most predominant species. Biology ''Montipora aequituberculata'' is a zooxanthellate species of coral. It obtains most of its nutritional needs from the symbiotic dinoflagellates that live inside its soft tissues. These photosynthetic organisms provide the coral with organic carbon and nitrogen, sometimes providing up to 90% of their host's energy needs for metabolism and growth. Its remaining needs are met by the planktonic organisms caught by the tentacles of the polyps. Status Like other reef corals, ''Montipora aequitu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Izu Islands
The are a group of volcanic islands stretching south and east from the Izu Peninsula of Honshū, Japan. Administratively, they form two towns and six villages; all part of Tokyo Prefecture. The largest is Izu Ōshima, usually called simply Ōshima. Although usually called the " Seven Islands of Izu" ( 伊豆七島 in Japanese), there are in fact more than a dozen islands and islets. Nine among them are currently inhabited. Geography The Izu islands stretch south-east from the Izu Peninsula on Honshu and cover an area of approximately . There are nine populated islands with a total population of 24,645 people () spread over . The largest of them is Izu Oshima (8,346 inhabitants, ), the smallest Toshima (292 inhabitants, .) Of the inhabited islands, seven are traditionally referred to as the "Izu Seven": Oshima, Toshima, Niijima, Kozujima, Miyakejima, Hachijojima, and Mikurajima, though Shikinejima and Aogashima are sometimes included as well. Each of the islands has its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elysia Ornata
''Elysia ornata'', commonly known as ornate elysia or ornate leaf slug, is a species of sea slug, a marine (ocean), marine gastropod mollusk. This sea slug superficially resembles a nudibranch, yet it does not belong to that suborder of gastropods. Instead it is a member of the closely related clade Sacoglossa, the "sap-sucking" sea slugs. Description ''Elysia ornata'' can grow to about in length. It is a translucent greenish-yellow colour speckled with white and black. It has broad Parapodium, parapodia each edged with an orange band and a black margin. The rhinophores are similarly coloured with a band of orange and dark tips.''Elysia ornata'' SeaSlugForum. Retrieved 2012-01-24. Its main food source is algae and are found on submergent vegetation. Distribution ''Elysia ornata'' is a tropic ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stylophora Pistillata Coral And Endozoicomonas Bacteria
The stylophorans are an extinct, possibly polyphyletic group allied to the Paleozoic Era echinoderms, comprising the prehistoric cornutes and mitrates. It is synonymous with the subphylum Calcichordata. Their unusual appearances have led to a variety of very different reconstructions of their anatomy, how they lived, and their relationships to other organisms. Stylophorans have played a major role in debates over the origin of chordates, as under the calcichordate hypothesis they were interpreted as being stem-group chordates. However, multiple lines of evidence argue against the calcichordate hypothesis, and stylophorans are now widely agreed to belong to the echinoderm total group. Debate remains over whether they are stem-group echinoderms which predate the origin of radial symmetry, or highly modified descendants of radially symmetric echinoderms. Description The general stylophoran body plan consists of a flattened theca and a single jointed appendage which extends fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Bacteria
Marine prokaryotes are marine bacteria and marine archaea. They are defined by their habitat as prokaryotes that live in marine environments, that is, in the saltwater of seas or oceans or the brackish water of coastal estuaries. All cellular life forms can be divided into prokaryotes and eukaryotes. Eukaryotes are organisms whose cells have a nucleus enclosed within membranes, whereas prokaryotes are the organisms that do not have a nucleus enclosed within a membrane. The three-domain system of classifying life adds another division: the prokaryotes are divided into two domains of life, the microscopic bacteria and the microscopic archaea, while everything else, the eukaryotes, become the third domain. Prokaryotes play important roles in ecosystems as decomposers recycling nutrients. Some prokaryotes are pathogenic, causing disease and even death in plants and animals. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacillus (shape)
A bacillus (), also called a bacilliform bacterium or often just a rod (when the context makes the sense clear), is a rod-shaped bacterium or archaeon. Bacilli are found in many different taxonomic groups of bacteria. However, the name ''Bacillus'', capitalized and italicized, refers to a specific genus of bacteria. The name Bacilli, capitalized but not italicized, can also refer to a less specific taxonomic group of bacteria that includes two orders, one of which contains the genus ''Bacillus''. When the word is formatted with lowercase and not italicized, 'bacillus', it will most likely be referring to shape and not to the genus at all. Bacilliform bacteria are also often simply called rods when the bacteriologic context is clear. Bacilli usually divide in the same plane and are solitary, but can combine to form diplobacilli, streptobacilli, and palisades. * Diplobacilli: Two bacilli arranged side by side with each other. * Streptobacilli: Bacilli arranged in chains. * Coccobac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
