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Renilla Muelleri
''Renilla muelleri'' (also spelled ''R. mulleri'' or ''R. müilleri'') is a species of sea pansy. It has been reported from the Gulf Coast of the United States, notably the Florida panhandle, but is also reported from the eastern coast of South America. It is thought to be a euryhaline littoral The littoral zone, also called litoral or nearshore, is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely i ... species, found to a depth of up to 150 meters. The genome of ''R. muelleri'' was sequenced in 2019. References Bioluminescent cnidarians Renillidae Octocorallia genera {{Octocorallia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euryhaline
Euryhaline organisms are able to adapt to a wide range of salinities. An example of a euryhaline fish is the short-finned molly, '' Poecilia sphenops'', which can live in fresh water, brackish water, or salt water. The green crab ('' Carcinus maenas'') is an example of a euryhaline invertebrate that can live in salt and brackish water. Euryhaline organisms are commonly found in habitats such as estuaries and tide pools where the salinity changes regularly. However, some organisms are euryhaline because their life cycle involves migration between freshwater and marine environments, as is the case with salmon and eels. The opposite of euryhaline organisms are stenohaline ones, which can only survive within a narrow range of salinities. Most freshwater organisms are stenohaline, and will die in seawater, and similarly most marine organisms are stenohaline, and cannot live in fresh water. Osmoregulation Osmoregulation is the active process by which an organism maintains its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Littoral
The littoral zone, also called litoral or nearshore, is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely inundated), to coastal areas that are permanently submerged — known as the ''foreshore'' — and the terms are often used interchangeably. However, the geographical meaning of ''littoral zone'' extends well beyond the intertidal zone to include all neritic waters within the bounds of continental shelves. Etymology The word ''littoral'' may be used both as a noun and as an adjective. It derives from the Latin noun ''litus, litoris'', meaning "shore". (The doubled ''t'' is a late-medieval innovation, and the word is sometimes seen in the more classical-looking spelling ''litoral''.) Description The term has no single definition. What is regarded as the full extent of the littoral zone, and the way the littoral zone is divided into subre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bioluminescent Cnidarians
Bioluminescence is the emission of light during a chemiluminescence reaction by living organisms. Bioluminescence occurs in multifarious organisms ranging from marine vertebrates and invertebrates, as well as in some fungi, microorganisms including some bioluminescent bacteria, dinoflagellates and terrestrial arthropods such as fireflies. In some animals, the light is bacteriogenic, produced by symbiotic bacteria such as those from the genus ''Vibrio''; in others, it is autogenic, produced by the animals themselves. In most cases, the principal chemical reaction in bioluminescence involves the reaction of a substrate called luciferin and an enzyme, called luciferase. Because these are generic names, luciferins and luciferases are often distinguished by the species or group, e.g. firefly luciferin or cypridina luciferin. In all characterized cases, the enzyme catalyzes the oxidation of the luciferin resulting in excited state oxyluciferin, which is the light emitter of the reac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Renillidae
''Renilla'' is a genus of Pennatulacea, sea pen. It is the only genus within the monotypic Family (biology), family Renillidae. Sea pansy is a common name for species in this genus. Species The following species are recognized: * ''Renilla amethystina'' Verrill, 1864 * ''Renilla koellikeri'' Pfeffer, 1886 * ''Renilla muelleri'' Kölliker, 1872 * ''Renilla musaica'' Zamponi & Pérez, 1996 * ''Renilla octodentata'' Zamponi & Pérez, 1996 * ''Renilla reniformis'' (Pallas, 1766) * ''Renilla tentaculata'' Zamponi, Perez & Capitali, 1996 Anatomy and Morphology ''Renilla'' has a distinctive heart shaped colony with a violet or red color. Pennatulaceans, in the order Pennatulacea, are soft corals in the subclass Octocorallia. But Pennatulaceans have different structures and functions from other octocorals. They form one main polyp, oozooid, which anchors itself onto the seabed using a stalk, Peduncle (anatomy), peduncle, instead of forming a large colony like most soft corals. The top o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
