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Asthenosoma Varium
''Asthenosoma varium'' is a sea urchin (an echinoderm, a member of the phylum that also includes star fish). Growing up to in diameter, it lives on sand and rubble sea bottoms in the Indo-Pacific, from the Red Sea to Australia and Southern Japan. Its venom tipped spines, with distinctive globular swellings below the tip, can inflict a painful sting if handled; the pain lasts as long as several hours. This capacity, perhaps coupled with its reddish-brown colour, has given it the common name fire urchin; other commonly used names are Pacific fire urchin, elusive sea urchin, variable fire urchin, and electric sea urchin. It plays host to the commensal shrimps '' Periclimenes colemani'' and ''Allopontonia brockii'', and the zebra crab, ''Zebrida adamsii''. Description ''Asthenosoma varium'' is a large sea urchin, hemispherical in shape, and growing to a diameter of . The plates from which the test is formed are not joined rigidly together, as is the case in most sea urchins. Instea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zebrida Adamsii
''Zebrida adamsii'' is a distinctively striped species of crab that lives in association with a sea urchin in the Indo-Pacific region. It is cryptically coloured with vertical stripes and has special adaptations to its legs to enable it to cling to its host's spines. Description ''Z. adamsii'' is a small crab, described as "a torpid, though elegant little crustacean" by the English naturalist Arthur Adams when it was first discovered by him and the Scottish zoologist Adam White during the surveying voyage of HMS ''Samarang'' in the Far East between 1843 and 1846. The carapace and limbs are smooth and hairless and are adorned with long spines. The colour is pink with dark, reddish-brown vertical stripes. Distribution ''Z. adamsii'' has a wide distribution in shallow water in the tropical Indian Ocean and western Pacific Ocean. The type locality is the estuary of the Pantai River in Borneo at a depth of about . Ecology ''Z. adamsii'' lives in symbiosis with a sea urchin, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omnivorous
An omnivore () is an animal that has the ability to eat and survive on both plant and animal matter. Obtaining energy and nutrients from plant and animal matter, omnivores digest carbohydrates, protein, fat, and fiber, and metabolize the nutrients and energy of the sources absorbed. Often, they have the ability to incorporate food sources such as algae, fungi, and bacteria into their diet. Omnivores come from diverse backgrounds that often independently evolved sophisticated consumption capabilities. For instance, dogs evolved from primarily carnivorous organisms (Carnivora) while pigs evolved from primarily herbivorous organisms (Artiodactyla). Despite this, physical characteristics such as tooth morphology may be reliable indicators of diet in mammals, with such morphological adaptation having been observed in bears. The variety of different animals that are classified as omnivores can be placed into further sub-categories depending on their feeding behaviors. Frugivores ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalopod
A cephalopod is any member of the molluscan class Cephalopoda (Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral body symmetry, a prominent head, and a set of arms or tentacles (muscular hydrostats) modified from the primitive molluscan foot. Fishers sometimes call cephalopods "inkfish", referring to their common ability to squirt ink. The study of cephalopods is a branch of malacology known as teuthology. Cephalopods became dominant during the Ordovician period, represented by primitive nautiloids. The class now contains two, only distantly related, extant subclasses: Coleoidea, which includes octopuses, squid, and cuttlefish; and Nautiloidea, represented by ''Nautilus'' and ''Allonautilus''. In the Coleoidea, the molluscan shell has been internalized or is absent, whereas in the Nautiloidea, the external shell remains. About 800 living species of cephalopods have been ident ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphamia Tubifer
''Siphamia'' is a genus of cardinalfishes native to the Indian and Pacific Ocean. Several of these species are commensal with various species of sea urchins. ''Siphamia minor'', a dwarf otolith-based species from the Burdigalian (Miocene) of southwestern India is the only fossil record for this genus. Species The 24 recognized species in this genus are:Mabuchi, K., Fraser, T.H., Song, H., Azuma, Y. & Nishida, M. (2014)Revision of the systematics of the cardinalfishes (Percomorpha: Apogonidae) based on molecular analyses and comparative reevaluation of morphological characters.''Zootaxa, 3846 (2): 151–203.'' * '' Siphamia arabica'' Gon & G. R. Allen, 2012 * '' Siphamia argentea'' Lachner, 1953 (silver siphonfish) * '' Siphamia brevilux'' Gon & G. R. Allen, 2012 (shortlight siphonfish) * '' Siphamia cephalotes'' ( Castelnau, 1875) (Wood's siphonfish) * '' Siphamia corallicola'' G. R. Allen, 1993 (coral siphonfish) * '' Siphamia cuneiceps'' Whitley, 1941 (wedgehead siph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commensalism
Commensalism is a long-term biological interaction (symbiosis) in which members of one species gain benefits while those of the other species neither benefit nor are harmed. This is in contrast with mutualism, in which both organisms benefit from each other; amensalism, where one is harmed while the other is unaffected; parasitism, where one is harmed and the other benefits, and parasitoidism, which is similar to parasitism but the parasitoid has a free-living state and instead of just harming its host, it eventually ends up killing it. The commensal (the species that benefits from the association) may obtain nutrients, shelter, support, or locomotion from the host species, which is substantially unaffected. The commensal relation is often between a larger host and a smaller commensal; the host organism is unmodified, whereas the commensal species may show great structural adaptation consistent with its habits, as in the remoras that ride attached to sharks and other fishes. Remo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asthenosoma Marisrubri
''Asthenosoma marisrubri'' ('flexible body of the Red Sea') (Weinberg & De Ridder, 1998) aka Red Sea fire urchin and toxic leather sea urchin , is a relatively common sea urchin with a widespread distribution in the Indo-Pacific, and was till 1998 considered a color variant of ''Asthenosoma varium''. Sea urchins are close relatives of starfish, crinoids, brittle stars and sea cucumbers, all being echinoderms ('spiny skins'). This species grows to 25 cm in diameter, with articulated plates making the test quite flexible and accounting for its binomen. It prefers water temperatures in the range 24 °C – 27 °C and depths down to 90m. It subsists on a great variety of food including algae, coral polyps and bottom detritus. It is most active at night and is named for the extreme pain inflicted by its spines and its occurrence in the Red Sea. It often affords shelter to the commensal shrimps ''Allopontonia iaini'', ''Periclimenes colemani'', and the parasitic gastr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toxopneustidae
Toxopneustidae is a family of globular sea urchins in the class Echinoidea. Characteristics All Camarodonts have imperforate tubercles and compound ambulacral plates. In addition, the Toxopneustids are characterised by the peristome, or opening through the test, having a sharp margin with the buccal notches being prominent. The tubercles lack the crenulations or ring of cog-like structures that articulate with the spines in certain other families. The Aristotle's lantern, or jaw apparatus, has the keeled teeth and the epiphyses united above the foramen magnum, the V-shaped gap between the hemipyramids that support the lantern's tooth. The Natural History Museum. Retrieved 2011-08-27. Genera *''[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinothrix
''Echinothrix'' is a genus of sea urchins which was first described in 1853 by Wilhelm Peters, a German naturalist and explorer. Description and characteristics The genus contains two species, '' E. diadema'' and '' E. calamaris''. These can be distinguished by the fact that ''E. diadema'' has fully black spines whereas ''E. calamaris'' has striped spines. Both of these species are found in the Indo-Pacific region, living on coral reefs. Taxonomy According to World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialist ... : References Diadematidae Taxa named by Wilhelm Peters {{Echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diadematidae
The Diadematidae are a family of sea urchins. Their tests are either rigid or flexible and their spines are long and hollow. * '' Astropyga'' Gray, 1825 **'' Astropyga radiata'' ( Leske, 1778), extant **'' Astropyga pulvinata'' (Lamarck, 1816), extant **'' Astropyga magnifica'' (Clark, 1934), extant *'' Centrostephanus'' Peters, 1855 **'' Centrostephanus asteriscus'' ( Agassiz & Clark, 1907), extant **'' Centrostephanus coronatus'' ( Verrill, 1867), extant **'' Centrostephanus fragile'' (Wiltshire in Wright, 1882), Santonian, Maastrichtian, Danian **'' Centrostephanus longispinus'' ( Philippi, 1845), extant **'' Centrostephanus nitidus'' (Koehler, 1927), extant **'' Centrostephanus rodgersii'' ( Agassiz, 1863), extant *'' Chaetodiadema'' Mortensen, 1903 **'' Chaetodiadema granulatum'' ( Mortensen, 1903), extant **'' Chaetodiadema keiense'' ( Mortensen, 1903), extant **'' Chaetodiadema tuberculatum'' (Clark, 1909), extant *'' Diadema'' Gray, 1825 **'' Diadema palmeri'' ( Baker, 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syringe
A syringe is a simple reciprocating pump consisting of a plunger (though in modern syringes, it is actually a piston) that fits tightly within a cylindrical tube called a barrel. The plunger can be linearly pulled and pushed along the inside of the tube, allowing the syringe to take in and expel liquid or gas through a discharge orifice at the front (open) end of the tube. The open end of the syringe may be fitted with a hypodermic needle, a nozzle or tubing to direct the flow into and out of the barrel. Syringes are frequently used in clinical medicine to administer injections, infuse intravenous therapy into the bloodstream, apply compounds such as glue or lubricant, and draw/measure liquids. There are also prefilled syringes (disposable syringes marketed with liquid inside). The word "syringe" is derived from the Greek σύριγξ ('' syrinx'', meaning "Pan flute", "tube"). Medical syringes Sectors in the syringe and needle market include disposable and safe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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