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Decorator Crab
Decorator crabs are crabs of several different species, belonging to the superfamily Majoidea (not all of which are decorators), that use materials from their environment to hide from, or ward off, predators. They decorate themselves by sticking mostly sedentary animals and plants to their bodies as camouflage, or if the attached organisms are noxious, to ward off predators through aposematism. History In 1889, William Bateson observed in detail the way that decorator crabs fix materials on their backs. He noted that "the whole proceeding is most human and purposeful", and that if a '' Stenorhynchus'' crab is cleaned, it will "''immediately'' begin to clothe itself again with the same care and precision as before". In his ''The Colours of Animals'' (1890), Edward Bagnall Poulton classified protective animal coloration into types such as warning colours and protective mimicry. He included self decoration under the heading "Adventitious Protection", quoting Bateson's account o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graceful Decorator Crab (Oregonia Gracilis)
Gracefulness, or being graceful, is the physical characteristic of displaying "pretty agility", in the form of elegant movement, poise, or balance. The etymological root of ''grace'' is the Latin word ''gratia'' from ''gratus'', meaning pleasing. Gracefulness has been described by reference to its being aesthetically pleasing. For example: The difficulty in defining exactly what constitutes gracefulness is described in this analysis of Henri Bergson's use of the term: Gracefulness is often referenced by simile, for example with people being described as "graceful as a swan", or "as graceful as a ballerina". The concept of gracefulness is applied both to movement, and to inanimate objects. For example, certain trees are commonly referred to as being "graceful", such as the '' Betula albosinensis'', ''Prunus × yedoensis'' (Yoshino cherry), and ''Areca catechu'' (betel-nut palm). Gracefulness is sometimes also attributed to non-corporeal human actions, such as the use of lang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yale University Press
Yale University Press is the university press of Yale University. It was founded in 1908 by George Parmly Day and Clarence Day, grandsons of Benjamin Day, and became a department of Yale University in 1961, but it remains financially and operationally autonomous. , Yale University Press publishes approximately 300 new hardcover A hardcover, hard cover, or hardback (also known as hardbound, and sometimes as casebound (At p. 247.)) book is one bookbinding, bound with rigid protective covers (typically of binder's board or heavy paperboard covered with buckram or other clo ... and 150 new paperback books annually and has a backlist of about 5,000 books in print. Its books have won five National Book Awards, two National Book Critics Circle Awards and eight Pulitzer Prizes. The press maintains offices in New Haven, Connecticut and London, England. Yale is the only American university press with a full-scale publishing operation in Europe. It was a co-founder of the dist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Velcro
Velcro IP Holdings LLC, trading as Velcro Companies and commonly referred to as Velcro (pronounced ), is a British privately held company, founded by Swiss electrical engineer George de Mestral in the 1950s. It is the original manufacturer of hook-and-loop fasteners, which de Mestral invented. History Swiss electrical engineer George de Mestral who studied at EPFL invented his first touch fastener when, in 1941, he went for a walk in the Jura Mountains, Jura mountains, and wondered why burdock seeds clung to his woolen socks and coat, and also his dog Milka. He discovered it could be turned into something useful. He patented it in 1955, and subsequently refined and developed its practical manufacture until its commercial introduction in the late 1950s. The fastener consisted of two components: a lineal fabric strip with tiny hooks that could 'mate' with another fabric strip with smaller loops, attaching temporarily, until pulled apart. Initially made of cotton, which proved imp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inachus
In Greek mythology, Inachus, Inachos or Inakhos (Ancient Greek: Ἴναχος) was the first king of Argos, Peloponnese, Argos. He was one of River gods (Greek mythology), the three thousand sons of Oceanus and Tethys (mythology), Tethys. The Inachos (river), Inachus River, a river in eastern Peloponnese, is named after him.Bibliotheca (Pseudo-Apollodorus), Apollodorus2.1.1/ref> Family Various ancient authors describe Inachus as being one of the river gods born of Titan (mythology), Titans Oceanus and Tethys (mythology), Tethys, and thus to the Greeks, was part of the Twelve Olympians, pre-Olympian or "Pelasgian" mythic landscape. In Greek iconography, Walter Burkert notes, the Achelous, rivers are represented in the form of a bull with a human head or face. Although these myths have been passed down since then, one of the most remarkable findings of modern archaeology was the monuments and remains showing that Argos had indeed been an ancient civilization alongside Egypt and B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crinoid
Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk in their adult form are commonly called sea lilies, while the unstalked forms, called feather stars or comatulids, are members of the largest crinoid order, Comatulida. Crinoids are echinoderms in the phylum Echinodermata, which also includes the starfish, brittle stars, sea urchins and sea cucumbers. They live in both shallow water and in depths of over . Adult crinoids are characterised by having the mouth located on the upper surface. This is surrounded by feeding arms, and is linked to a U-shaped gut, with the anus being located on the oral disc near the mouth. Although the basic echinoderm pattern of fivefold symmetry can be recognised, in most crinoids the five arms are subdivided into ten or more. These have feathery pinnules and are spread wide to gather planktonic particles from the water. At some stage in their lives, most crinoids have a sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antedon Rosaceus
''Antedon'' is a genus of sessile, stemless crinoids found in shallow tropical and temperate marine environments worldwide. The genus first appears in the fossil record during the Cretaceous period. Characteristics Members of this genus have no stems but have five pairs of feathery arms arising from a central concave disc. There are a number of cirri or unbranched appendages on a low, cone-shaped dorsal ossicle, a bone-like structure in the centre of the disc. The mouth and the ambulacral grooves are also on the upper surface. Clawed cirri on the lower surface provide temporary attachment to the substrate. There is great variability in the morphological features in antedonids found in different habitats and the main distinguishing feature among the species is the number of cirri. Feeding ''Antedon'' is a filter feeder, feeding on small particules within the water colunm. Their feeding rhythms were observed and the tend to feed almost continuously. ''Antedon'' does not feed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrozoa
Hydrozoa (hydrozoans; from Ancient Greek ('; "water") and ('; "animals")) is a taxonomy (biology), taxonomic class (biology), class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colony (biology), colonies of the colonial species can be large, and in some cases the specialized individual animals cannot survive outside the colony. A few genus, genera within this class live in freshwater ecosystem, freshwater habitats. Hydrozoans are related to jellyfish and corals, which also belong to the phylum (biology), phylum Cnidaria. Some examples of hydrozoans are the freshwater jelly (''Craspedacusta sowerbyi''), freshwater polyps (''Hydra (genus), Hydra''), ''Obelia'', Portuguese man o' war (''Physalia physalis''), chondrophores (Porpitidae), and pink-hearted hydroids (''Tubularia''). Anatomy Most hydrozoan species include both a polyp (zoology), polypoid and a medusa (biology), medusoid stage in their Biological ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sertularia Abietina
''Sertularia'' is a genus of hydroids in the family Sertulariidae. Species The following species are recognized in the genus ''Sertularia'': *''Sertularia albimaris'' Mereschkowsky, 1877 *Air Fern The air fern (''Sertularia argentea'') is a dead and dried colony of hydrozoans, a species of marine animal in the family Sertulariidae related to corals and jellyfish. Air ferns are typically dyed green and sold as a curiosity, as a decorative ... (''Sertularia argentea'' Linnaeus, 1758) *''Sertularia australis'' (Kirchenpauer, 1864) *''Sertularia borneensis'' Billard, 1925 *''Sertularia brashnikowi'' Kudelin, 1914 *''Sertularia brunnea'' (Stechow, 1923) *''Sertularia camtschatika'' Vinogradov, 1947 *''Sertularia ceylonensis'' Stechow, 1921 *''Sertularia conferta'' (Kirchenpauer, 1864) *''Sertularia converrucosa'' Naumov, 1960 *''Sertularia cupressina'' Linnaeus, 1758 *''Sertularia cupressoides'' Clark, 1876 *''Sertularia distans'' (Lamouroux, 1816) *''Sertularia dohrni'' Stechow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seaweed
Seaweed, or macroalgae, refers to thousands of species of macroscopic, multicellular, marine algae. The term includes some types of ''Rhodophyta'' (red), '' Phaeophyta'' (brown) and ''Chlorophyta'' (green) macroalgae. Seaweed species such as kelps provide essential nursery habitat for fisheries and other marine species and thus protect food sources; other species, such as planktonic algae, play a vital role in capturing carbon and producing at least 50% of Earth's oxygen. Natural seaweed ecosystems are sometimes under threat from human activity. For example, mechanical dredging of kelp destroys the resource and dependent fisheries. Other forces also threaten some seaweed ecosystems; for example, a wasting disease in predators of purple urchins has led to an urchin population surge which has destroyed large kelp forest regions off the coast of California. Humans have a long history of cultivating seaweeds for their uses. In recent years, seaweed farming has become a global ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyas Araneus
The great spider crab (''Hyas araneus'') is a species of crab found in northeast Atlantic waters and the North Sea, usually below the tidal zone. In 1986, two specimens were captured at the South Shetland Islands off the Antarctic Peninsula The Antarctic Peninsula, known as O'Higgins Land in Chile and Tierra de San Martin in Argentina, and originally as Graham Land in the United Kingdom and the Palmer Peninsula in the United States, is the northernmost part of mainland Antarctica. ..., apparently transported by human agency. It has been feared that the species would have an adverse effect on the native fauna, but there have been no further captures from the region since the 1986 specimens. The great spider crab can moult and get rid of their outer shell/skin. This can take some time but it lets them grow to great size. After they moult they are very vulnerable to predators because of a very soft exoskeleton. References Majoidea Crabs of the Atlantic Ocean Crustacea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyastenus Elatus
''Hyastenus elatus'' is a species of crab in the family Epialtidae. It is one of several decorator crabs, habitually covering itself in aposematic sponges which may also serve as camouflage Camouflage is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see, or by disguising them as something else. Examples include the leopard's spotted coat, the b .... References Majoidea Crabs of the Pacific Ocean Crustaceans described in 1986 {{Majoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Methuen Publishing
Methuen Publishing Ltd (; also known as Methuen Books) is an English publishing house. It was founded in 1889 by Sir Algernon Methuen (1856–1924) and began publishing in London in 1892. Initially, Methuen mainly published non-fiction academic works, eventually diversifying to encourage female authors and later translated works. E. V. Lucas headed the firm from 1924 to 1938. Establishment In June 1889, as a sideline to teaching, Algernon Methuen began to publish and market his own textbooks under the label Methuen & Co. The company's first success came in 1892 with the publication of Rudyard Kipling's '' Barrack-Room Ballads''. Rapid growth came with works by Marie Corelli, Hilaire Belloc, Robert Louis Stevenson, and Oscar Wilde ('' De Profundis'', 1905) as well as Edgar Rice Burroughs' ''Tarzan of the Apes''.Stevenson, page 59. In 1910, the business was converted into a limited liability company with E. V. Lucas and G.E. Webster joining the founder on the board of dire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
