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Careproctus Nigricans
''Careproctus'' is a genus of snailfishes found in benthic and benthopelagic habitats in the Atlantic, Pacific, Arctic and Southern Oceans. Whether they truly are absent from the Indian Ocean (except for a couple of species in Subantarctic waters) is unknown and might be an artifact of limited sampling. They range from shallow coastal seas in the far north of their range to the abyssal zone, at depths of . In the Northern Hemisphere they mostly live shallower than '' Paraliparis'', but this pattern is reversed in the Southern Hemisphere. Although almost entirely restricted to very cold waters, a single species, ''C. hyaleius'', lives at hydrothermal vents. Its generic name is derived from the Ancient Greek κάρα (''kara'', "face, head") and πρωκτός (''prōktos'', "anus"), therefore literally meaning "butt-face". ''Careproctus'' have one pair of nostrils and a ventral suction disc but lack a pseudobranch. They are tadpole-like in shape and reach up to in stan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Numazu
is a city located in eastern Shizuoka Prefecture, Japan. , the city had an estimated population of 189,486 in 91,986 households, and a population density of 1,014 persons per km2. The total area of the city is . Geography Numazu is at the northwestern end of the Izu Peninsula, which is a leisure destination known for its numerous hot springs. Mount Fuji, Japan's tallest mountain, may also be seen from Numazu on clear days. Numazu is located west of Tokyo and is on the Tōkaidō Main Line, the main railway line from Osaka to Tokyo. Warmed by the Kuroshio Current, the area enjoys a warm maritime climate with hot, humid summers and mild, cool winters. The Kano River runs through the middle of the city. Mount Ashitaka (1188 meters) is the highest point in the city Neighboring municipalities Shizuoka Prefecture *Mishima *Fuji *Izu *Izunokuni * Shimizu *Nagaizumi *Kannami Demographics Per Japanese census data, the population of Numazu has been in slow decline over the past 30 year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ventral
Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans. The terms, typically derived from Latin or Greek language, Greek roots, describe something in its standard anatomical position. This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on. As part of defining and describing terms, the body is described through the use of anatomical planes and anatomical axis, anatomical axes. The meaning of terms that are used can change depending on whether an organism is bipedal or quadrupedal. Additionally, for some animals such as invertebrates, some terms may not have any meaning at all; for example, an animal that is radially symmetrical will have no anterior surface, but can still have a description that a part is close to the middle ("proximal") or further from the middle ("distal"). International organisations have determined vocabularies that are often used as standard vocabular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gill
A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment. Branchia (pl. branchiae) is the zoologists' name for gills (from Ancient Greek ). With the exception of some aquatic insects, the filaments and lamellae (folds) contain blood or coelomic fluid, from which gases are exchanged through the thin walls. The blood carries oxygen to other parts of the body. Carbon dioxide passes from the blood through the thin gill tissue into the water. Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians. Semiterrestrial marine animals such as crabs and mudskippers have gill cham ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lopholithodes
''Lopholithodes'' is a genus of king crab. It includes ''Lopholithodes foraminatus'' (the brown box crab) and ''Lopholithodes mandtii'', the Puget Sound king crab The Puget Sound king crab (''Lopholithodes mandtii''), is a species of king crab which inhabits the oceans of the Pacific coast of North America from Alaska to central California. Adults are orange, red and purple in color, while juveniles are ei .... References King crabs {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paralithodes
''Paralithodes'' is a genus of North Pacific king crab King crabs are a taxon of decapod crustaceans chiefly found in cold seas. Because of their large size and the taste of their meat, many species are widely caught and sold as food, the most common being the red king crab (''Paralithodes camtscha ...s. Species The genus contains the following species: References External links * * King crabs Decapod genera Taxa named by Johann Friedrich von Brandt {{decapod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neolithodes
''Neolithodes'' is a genus of king crabs, in the family Lithodidae. They are found in all major oceans, both in high and low latitudes. Although there are records from water as shallow as in cold regions, most records are much deeper, typically , with the deepest confirmed at . They are fairly large to large crabs that typically are reddish in color and spiny, although the size of these spines varies depending on species (from long in species like '' N. grimaldii'' to very short in species like ''N. flindersi'', and tending to be more pronounced in small than in large individuals). Various sessile organisms such as barnacles are sometimes attached to their carapace and legs, and small commensal amphipods may live in their carapace. They are occasionally the victims of parasitic snailfish of the genus ''Careproctus'', which lay their egg mass in the gill chamber of the crab, forming a mobile "home" until they hatch. Conversely, some juvenile ''Neolithodes'' have a commensal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithodes
''Lithodes'' is a genus of king crabs. Today there are about 30 recognized species, but others formerly included in this genus have been moved to ''Neolithodes'' and ''Paralomis''. They are found in oceans around the world, ranging from shallow to deep waters, but mostly at depths of . They are restricted to relatively cold waters, meaning that they only occur at large depths at low latitudes, but some species also shallower at high latitudes. They are medium to large crabs and some species are or were targeted by fisheries.Emmerson, W.D. (2016). A Guide to, and Checklist for, the Decapoda of Namibia, South Africa, vol. 2. Cambridge Scholar Publishing. Species ''Lithodes'' contains the following species: *''Lithodes aequispinus'' Benedict, 1895 – golden king crab *''Lithodes aotearoa'' Ahyong, 2010 *''Lithodes australiensis'' Ahyong, 2010 *''Lithodes ceramensis'' Takeda & Nagai, 2004 *'' Lithodes chaddertoni'' Ahyong, 2010 *''Lithodes confundens'' Macpherson, 1988 *'' Litho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
King Crab
King crabs are a taxon of decapod crustaceans chiefly found in cold seas. Because of their large size and the taste of their meat, many species are widely caught and sold as food, the most common being the red king crab (''Paralithodes camtschaticus''). King crabs are generally thought to be derived from hermit crab-like ancestors within the Paguridae, which may explain the asymmetry still found in the adult forms. This ancestry is supported by several anatomical peculiarities which are present only in king crabs and hermit crabs. Although some doubt still exists about this hypothesis, king crabs are the most widely quoted example of carcinisation among the Decapoda. The evidence for this explanation comes from the asymmetry of the king crab's abdomen, which is thought to reflect the asymmetry of hermit crabs, which must fit into a spiral shell. Controversial taxon Although formerly classified among the hermit crabs in the superfamily Paguroidea, king crabs are now placed in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasitic
Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson has characterised parasites as "predators that eat prey in units of less than one". Parasites include single-celled protozoans such as the agents of malaria, sleeping sickness, and amoebic dysentery; animals such as hookworms, lice, mosquitoes, and vampire bats; fungi such as honey fungus and the agents of ringworm; and plants such as mistletoe, dodder, and the broomrapes. There are six major parasitic strategies of exploitation of animal hosts, namely parasitic castration, directly transmitted parasitism (by contact), trophicallytransmitted parasitism (by being eaten), vector-transmitted parasitism, parasitoidism, and micropredation. One major axis of classification concerns invasiveness: an endoparasite lives inside the host's body; an e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spongocoel
A spongocoel (), also called paragaster (or paragastric cavity), is the large, central cavity of sponges. Water enters the spongocoel through hundreds of tiny pores ( ostia) and exits through the larger opening (osculum The osculum (plural "oscula") is an excretory structure in the living sponge, a large opening to the outside through which the current of water exits after passing through the spongocoel. Wastes diffuse into the water and the water is pumped thr ...). Depending on the body plan of the sponge (which can be asconoid, syconoid, or leuconoid), the spongocoel could be a simple interior space of the sponge or a complexly branched inner structure. Regardless of body plan or class, the spongocoel is lined with choanocytes, which have flagellum, flagella that push water through the spongocoel, creating a current. The spongocoel is lined by a variety of cell types, each having a unique function: * porocytes – line the pores of the sponge and are the structure through wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glass Sponge
Hexactinellid sponges are sponges with a skeleton made of four- and/or six-pointed siliceous spicules, often referred to as glass sponges. They are usually classified along with other sponges in the phylum Porifera, but some researchers consider them sufficiently distinct to deserve their own phylum, Symplasma. Some experts believe glass sponges are thlongest-lived animals on earth these scientists tentatively estimate a maximum age of up to 15,000 years. Biology Glass sponges are relatively uncommon and are mostly found at depths from below the sea level. Although the species '' Oopsacas minuta'' has been found in shallow water, others have been found much deeper. They are found in all oceans of the world, although they are particularly common in Antarctic and Northern Pacific waters. They are more-or-less cup-shaped animals, ranging from in height, with sturdy lattice-like internal skeletons made up of fused spicules of silica. The body is relatively symmetrical, with a larg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commensal
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] |
