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Allopontonia Brockii
''Allopontonia brockii'' is a small commensal shrimp in the family Palaemonidae. Description This species of shrimp can be easily confused with ''Allogalathea elegans'' (crinoid squat lobster) due to its long chelipeds, the visible shape of its cephalothorax, its abdomen slightly curved under the body and by its colours. However, ''Allopontonia brockii'' differs in several points from ''Allogalathea elegans'': *its rostrum is ridged, sharp and notched, *its chelipeds are smooth without spines. The body coloration varies from light yellow to orange–red with a wide whitish longitudinal stripe sometimes lined with a dark border. It reaches a maximum length of . Distribution ''Allopontonia brockii'' is widespread through the Indo-Pacific, Red Sea included, and the eastern coast of the Pacific Ocean. Ecology ''Allopontonia brockii'' is considered as a commensal species from different species of sea urchins like some of the genus '' Salmaciella'', ''Salmacis'', '' Asthenosoma'' or ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johannes Govertus De Man
Johannes Govertus de Man (2 May 1850 in Middelburg – 9 January 1930 in Middelburg), was a Dutch biologist. He was assistant curator at the (Dutch for ''national natural history museum'') in Leiden, where he specialised in free-living nematodes and decapod crustaceans, although he also wrote papers on flatworms, sipunculids and, in his dissertation only, vertebrates. His change away from vertebrates disappointed the director of the museum, and de Man left his job there after eleven years. For the rest of his life, de Man worked at his parents' house in Middelburg and later at a house near the shore at Yerseke in the Oosterschelde estuary, relying on his family's private income. Taxa named after de Man *'' Anachis demani'' De Jong & Coomans, 1988 *'' Anchistus demani'' Kemp, 1922 *'' Araeolaimus demani'' (Schuurmans-Stekhoven, 1950) Wieser, 1956 *'' Axonolaimus demani'' De Coninck & Stekhoven, 1933 *'' Caridina demani'' J. Roux, 1911 *'' Charybdis (Goniosoma) demani'' Leene, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continents of Asia and Oceania in the west and the Americas in the east. At in area (as defined with a southern Antarctic border), this largest division of the World Ocean—and, in turn, the hydrosphere—covers about 46% of Earth's water surface and about 32% of its total surface area, larger than Earth's entire land area combined .Pacific Ocean . '' Britannica Concise.'' 2008: Encyclopædia Britannica, Inc. The centers of both the |
Crustaceans Of The Pacific Ocean
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods emerged deep in the Crustacean group, with the completed group referred to as Pancrustacea. Some crustaceans (Remipedia, Cephalocarida, Branchiopoda) are more closely related to insects and the other hexapods than they are to certain other crustaceans. The 67,000 described species range in size from '' Stygotantulus stocki'' at , to the Japanese spider crab with a leg span of up to and a mass of . Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustaceans Of The Indian Ocean
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods emerged deep in the Crustacean group, with the completed group referred to as Pancrustacea. Some crustaceans (Remipedia, Cephalocarida, Branchiopoda) are more closely related to insects and the other hexapods than they are to certain other crustaceans. The 67,000 described species range in size from '' Stygotantulus stocki'' at , to the Japanese spider crab with a leg span of up to and a mass of . Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palaemonoidea
Palaemonoidea is a large superfamily of shrimp, containing nearly 1,000 species. The position of the family Typhlocarididae is unclear, although the monophyly of a group containing the remaining seven families is well supported. *Anchistioididae Borradaile, 1915 * Desmocarididae Borradaile, 1915 *Euryrhynchidae Holthuis, 1950 *Gnathophyllidae Dana, 1852 *Hymenoceridae Ortmann, 1890 *Kakaducarididae Bruce, 1993 *Palaemonidae Rafinesque, 1815 *Typhlocarididae Annandale & Kemp, 1913 Image:Gnathophyllum americanum Réunion.JPG, ''Gnathophyllum americanum'', a Palaemonidae Image:Harlequin Shrimp 1.jpg, ''Hymenocera picta'', the only Hymenoceridae Image:Emperor Shrimp - Periclimenes imperator.jpg, ''Periclimenes imperator'', a Palaemonidae Image:Typhlocaris ayyaloni cropped.jpg, ''Typhlocaris ayyaloni'', a Typhlocarididae ''Typhlocaris'' is a genus of blind cave-dwelling shrimp, placed in its own family, Typhlocarididae. It contains 4 species: *''Typhlocaris ayyaloni ''Typhlo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Substratum
In linguistics, a stratum (Latin for "layer") or strate is a language that influences or is influenced by another through contact. A substratum or substrate is a language that has lower power or prestige than another, while a superstratum or superstrate is the language that has higher power or prestige. Both substratum and superstratum languages influence each other, but in different ways. An adstratum or adstrate is a language that is in contact with another language in a neighbor population without having identifiably higher or lower prestige. The notion of "strata" was first developed by the Italian linguist Graziadio Isaia Ascoli (1829–1907), and became known in the English-speaking world through the work of two different authors in 1932. Thus, both concepts apply to a situation where an intrusive language establishes itself in the territory of another, typically as the result of migration. Whether the superstratum case (the local language persists and the intrusive languag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Asthenosoma
Asthenosoma is a genus of sea urchins in the family Echinothuriidae. Their spines are covered with harmful venom capsules. Taxonomy The World Echinoidea Database recognises the following species: * '' Asthenosoma dilatatum'' Mortensen, 1934 * '' Asthenosoma ijimai'' Yoshiwara, 1897 * '' Asthenosoma intermedium'' H.L. Clark, 1938 * '' Asthenosoma marisrubri'' Weinberg & de Ridder, 1998 – "Red sea fire urchin" * '' Asthenosoma periculosum'' Endean, 1964 * '' Asthenosoma striatissimum'' Ravn, 1928 † * ''Asthenosoma varium'' Grube, 1868 – "fire sea urchin". "†" means an extinct taxon. Image:Pygmy Cuttlefish on Fire Seaurchin.jpg, ''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 ...'' Image:Toxic Leather Sea Urchin - Asthenosoma marisrubri.jpg, '' Asthenos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salmacis
Salmacis ( grc, Σαλμακίς) was an atypical Naiad nymph of Greek mythology. She rejected the ways of the virginal Culture of Greece, Greek goddess Artemis in favour of vanity and idleness. Mythology Ovid's version Salmacis' attempted rape of Hermaphroditus is narrated in the fourth book of Ovid's ''Metamorphoses'' (see also Dercetis (mythology), Dercetis). One day Hermaphroditus went swimming in his pool. Upon seeing him, Salmacis was struck with love for him, approached him and confessed her love to him; but he was not interested, and demanded she leave. She did so, but her passion took her back, unable to stay away from him. As Hermaphroditus emerged from the pool, she threw herself at him, and forcibly kissed him as he tried to escape. Salmacis then cried to the gods and begged them to let them stay together forever; and the gods answered by fusing them together for all time, into a deity that had both male and female parts. She thus becomes one with Hermaphroditu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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