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Ark Clam
Ark clam is the common name for a family of small to large-sized saltwater clams or marine bivalve molluscs in the family Arcidae. Generally less than 80 mm long, ark clams vary both in shape and size. They number about 200 species worldwide. The group is known as "ark shells" because species such as '' Arca'' have a large flat area between the umbones which, in an undamaged shell, somewhat resembles a deck, with the rest of the shell perhaps illustrating an ancient wooden boat such as Noah's ark is thought to have been. The thick, ridged shells of ark clams are often white, cream or tan, but in some species, the shell is striped with, tinted with, or completely colored, a rich brown. In life the shell of most species has a top shell layer that is thick brown periostracum affixed to the harder calcareous part of the shell. In some species such as '' Barbatia'', this outer horny covering is tufted at the end of the shell into something that resembles a beard, hence the name '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-Baptiste Lamarck
Jean-Baptiste Pierre Antoine de Monet, chevalier de Lamarck (1 August 1744 – 18 December 1829), often known simply as Lamarck (; ), was a French naturalist, biologist, academic, and soldier. He was an early proponent of the idea that biological evolution occurred and proceeded in accordance with Naturalism (philosophy), natural laws. Lamarck fought in the Seven Years' War against Prussia, and was awarded a commission for bravery on the battlefield. Posted to Monaco, Lamarck became interested in natural history and resolved to study medicine.#Packard, Packard (1901), p. 15. He retired from the army after being injured in 1766, and returned to his medical studies. Lamarck developed a particular interest in botany, and later, after he published the three-volume work ''Flore françoise'' (1778), he gained membership of the French Academy of Sciences in 1779. Lamarck became involved in the Jardin des Plantes and was appointed to the Chair of Botany in 1788. When the French Nationa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemoglobin
Hemoglobin (haemoglobin, Hb or Hgb) is a protein containing iron that facilitates the transportation of oxygen in red blood cells. Almost all vertebrates contain hemoglobin, with the sole exception of the fish family Channichthyidae. Hemoglobin in the blood carries oxygen from the respiratory organs (lungs or gills) to the other tissues of the body, where it releases the oxygen to enable aerobic respiration which powers an animal's metabolism. A healthy human has 12to 20grams of hemoglobin in every 100mL of blood. Hemoglobin is a metalloprotein, a chromoprotein, and a globulin. In mammals, hemoglobin makes up about 96% of a red blood cell's dry matter, dry weight (excluding water), and around 35% of the total weight (including water). Hemoglobin has an oxygen-binding capacity of 1.34mL of O2 per gram, which increases the total blood oxygen capacity seventy-fold compared to dissolved oxygen in blood plasma alone. The mammalian hemoglobin molecule can bind and transport up to four ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sushi
is a traditional Japanese dish made with , typically seasoned with sugar and salt, and combined with a variety of , such as seafood, vegetables, or meat: raw seafood is the most common, although some may be cooked. While sushi comes in numerous styles and presentation, the current defining component is the vinegared rice, also known as , or . The modern form of sushi is believed to have been created by Hanaya Yohei, who invented nigiri-zushi, the most commonly recognized type today, in which seafood is placed on hand-pressed vinegared rice. This innovation occurred around 1824 in the Edo period (1603–1867). It was the fast food of the ''chōnin'' class in the Edo period. Sushi is traditionally made with medium-grain white rice, although it can also be prepared with brown rice or short-grain rice. It is commonly prepared with seafood, such as Squid as food, squid, Eel as food, eel, Japanese amberjack, yellowtail, Salmon as food, salmon, Tuna as food, tuna or Crab stick, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caribbean
The Caribbean ( , ; ; ; ) is a region in the middle of the Americas centered around the Caribbean Sea in the Atlantic Ocean, North Atlantic Ocean, mostly overlapping with the West Indies. Bordered by North America to the north, Central America to the west, and South America to the south, it comprises numerous List of Caribbean islands, islands, cays, islets, reefs, and banks. It includes the Lucayan Archipelago, Greater Antilles, and Lesser Antilles of the West Indies; the Quintana Roo Municipalities of Quintana Roo#Municipalities, islands and Districts of Belize#List, Belizean List of islands of Belize, islands of the Yucatán Peninsula; and the Bay Islands Department#Islands, Bay Islands, Miskito Cays, Archipelago of San Andrés, Providencia and Santa Catalina, Archipelago of San Andrés, Providencia, and Santa Catalina, Corn Islands, and San Blas Islands of Central America. It also includes the coastal areas on the Mainland, continental mainland of the Americas bordering the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arca Zebra
''Arca zebra'', or the turkey wing ark clam (or simply turkey wing), is a bivalve mollusc in the family Arcidae, the ark clams. Description Distribution This species is found along the Atlantic coast of North America, ranging from North Carolina to the West Indies and Bermuda. It attaches itself to rocks or other hard substrates in shallow water with byssus threads. Morphology The shell of ''Arca zebra'' is boldly striped in brown and white which gives it a resemblance to the wing of a wild turkey. The whole shell (when both valves are together) has also been likened to Noah's Ark. It is a sturdy shell growing up to 4 in (10 cm) long and 2 in wide. The umbones are separated by a shallow depression, and the hinge is long and straight with about 50 small teeth. There is coarse sculpturing fanning out from the umbones. The inside of the shell is whitish or pale mauve. File:Arca zebra 01.jpg, Right valve File:Arca zebra 02.jpg, Left valve Ecology Feeding ''Arca zebr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shell Mound
A midden is an old dump for domestic waste. It may consist of animal bones, human excrement, botanical material, mollusc shells, potsherds, lithics (especially debitage), and other artifacts and ecofacts associated with past human occupation. These features provide a useful resource for archaeologists who wish to study the diets and habits of past societies. Middens with damp, anaerobic conditions can even preserve organic remains in deposits as the debris of daily life are tossed on the pile. Each individual toss will contribute a different mix of materials depending upon the activity associated with that particular toss. During the course of deposition sedimentary material is deposited as well. Different mechanisms, from wind and water to animal digs, create a matrix which can also be analysed to provide seasonal and climatic information. In some middens individual dumps of material can be discerned and analysed. Shells A shell midden or shell mound is an archae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tegillarca Granosa
''Tegillarca granosa'' (also known as ''Anadara granosa'') is a species of ark clam known as the blood cockle or blood clam due to the red haemoglobin liquid inside the soft tissues. It is found throughout the Indo-Pacific region from the eastern coast of South Africa northwards and eastwards to Southeast Asia, Australia, Polynesia, and up to northern Japan. It lives mainly in the intertidal zone at one to two metres water depth, burrowed down into sand or mud. Adult size is about 5 to 6 cm long and 4 to 5 cm wide. The meat of this bivalve is served steamed, boiled, roasted, or traditionally raw. Anatomy File:Tegillarca granosa 01.jpg, Right valve File:Tegillarca granosa 02.jpg, Left valve Human use Aquaculture It has a high economic value as food, and it is aquacultured. On the coast of Zhejiang Province alone, blood cockle plantations occupy around 145,000 '' mu'' (about 100 km2) of mudflats. These clams are raised in the river estuaries of the neigh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harmful Algal Bloom
A harmful algal bloom (HAB), or excessive algae growth, sometimes called a red tide in marine environments, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, water deoxygenation, mechanical damage to other organisms, or by other means. HABs are sometimes defined as only those algal blooms that produce toxins, and sometimes as any algal bloom that can result in severely lower oxygen levels in natural waters, killing organisms in marine or fresh waters. Blooms can last from a few days to many months. After the bloom dies, the microbes that decompose the dead algae use up more of the oxygen, generating a " dead zone" which can cause fish die-offs. When these zones cover a large area for an extended period of time, neither fish nor plants are able to survive. It is sometimes unclear what causes specific HABs as their occurrence in some locations appears to be entirely natural, while in others they appear to be a re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cockles
Cockle may refer to: * Cockle (bivalve), an edible, marine bivalve mollusc * ''Lolium temulentum'' (also cockle), an annual plant of the family Poaceae * Berwick cockle, a white-coloured sweet with red stripes * ''Cockle'', a codename for the folding kayaks used in World War II * ''Cockles'' (TV series), a 1984 British television series * ''Cockles'' (as in "warm the cockles of someone's heart"), the ventricles of the heart People with the surname * Doug Cockle (born 1970), American actor and director * Dudley Cockle (1907–1986), English cricketer and Royal Air Force airman * Jackie Cockle (born 1950), British animation specialist * James Cockle (1819–1895), English lawyer and mathematician * John Cockle (1908–1966), Australian politician See also * Cockle Bay (other) * Cockle Creek (other) * Cockleshell (other) * Cocles (other) * Cockley (other) * Cocklebur ''Xanthium'' (cocklebur) is a genus of flowering plants in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larva
A larva (; : larvae ) is a distinct juvenile form many animals undergo before metamorphosis into their next life stage. Animals with indirect development such as insects, some arachnids, amphibians, or cnidarians typically have a larval phase of their life cycle. A larva's appearance is generally very different from the adult form (''e.g.'' caterpillars and butterflies) including different unique structures and organs that do not occur in the adult form. Their diet may also be considerably different. In the case of smaller primitive arachnids, the larval stage differs by having three instead of four pairs of legs. Larvae are frequently adapted to different environments than adults. For example, some larvae such as tadpoles live almost exclusively in aquatic environments but can live outside water as adult frogs. By living in a distinct environment, larvae may be given shelter from predators and reduce competition for resources with the adult population. Animals in the lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planktonic
Plankton are the diverse collection of organisms that drift in water (or air) but are unable to actively propel themselves against currents (or wind). The individual organisms constituting plankton are called plankters. In the ocean, they provide a crucial source of food to many small and large aquatic organisms, such as bivalves, fish, and baleen whales. Marine plankton include bacteria, archaea, algae, protozoa, microscopic fungi, and drifting or floating animals that inhabit the saltwater of oceans and the brackish waters of estuaries. Freshwater plankton are similar to marine plankton, but are found in lakes and rivers. Mostly, plankton just drift where currents take them, though some, like jellyfish, swim slowly but not fast enough to generally overcome the influence of currents. Although plankton are usually thought of as inhabiting water, there are also airborne versions that live part of their lives drifting in the atmosphere. These '' aeroplankton'' include plant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
