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Galatheacaridoidea
''Galatheacaris abyssalis'' is a rare species of shrimp, now thought to be a larval stage of another genus, '' Eugonatonotus''. It was described in 1997 on the basis of a single specimen caught in the Celebes Sea at a depth of . It was seen to be so different from previously known shrimp species that a new family, Galatheacarididae, and superfamily, Galatheacaridoidea, were erected for it. Later, more specimens were found in the stomach of a lancetfish, ''Alepisaurus ferox''. The species shares some plesiomorphies with ''Procaris'', and the two taxa were thought to be closely related. Molecular phylogenetic analyses showed that ''Galatheacaris abyssalis'' had such similar mitochondrial DNA to that of ''Eugonatonotus chacei'' that the two must be considered conspecific; it is now thought that ''Galatheacaris'' is the megalopa Crustaceans may pass through a number of larval and immature stages between hatching from their eggs and reaching their adult form. Each of the stages is s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caridea
The Caridea, commonly known as caridean shrimp or true shrimp, are an infraorder of shrimp within the order Decapoda. This infraorder contains all species of true shrimp. They are found widely around the world in both fresh and salt water. Many other animals with similar names – such as the mud shrimp of Axiidea and the boxer shrimp of Stenopodidea – are not true shrimp, but many have evolved features similar to true shrimp. Biology Carideans are found in every kind of aquatic habitat, with the majority of species being marine. Around a quarter of the described species are found in fresh water, however, including almost all the members of the species-rich family Atyidae and the Palaemonidae subfamily Palaemoninae. They include several commercially important species, such as ''Macrobrachium rosenbergii'', and are found on every continent except Antarctica. The marine species are found at depths to , and from the tropics to the polar regions. In addition to the great variety in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decapoda
The Decapoda or decapods (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crabs, lobsters, crayfish, shrimp and prawns. Most decapods are scavengers. The order is estimated to contain nearly 15,000 species in around 2,700 genera, with around 3,300 fossil species. Nearly half of these species are crabs, with the shrimp (about 3,000 species) and Anomura including hermit crabs, porcelain crabs, squat lobsters (about 2500 species) making up the bulk of the remainder. The earliest fossil decapod is the Devonian ''Palaeopalaemon''. Anatomy Decapods can have as many as 38 appendages, arranged in one pair per body segment. As the name Decapoda (from the Greek , ', "ten", and , '' -pod'', "foot") implies, ten of these appendages are considered legs. They are the pereiopods, found on the last five thoracic segments. In many decapods, one pair of these "legs" has enlarged pincers, called chelae, with the legs be ... [...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] |
Lancetfish
Lancetfishes are large oceanic predatory fishes in the genus ''Alepisaurus'' ("scaleless lizard") in the monogeneric family Alepisauridae. Lancetfishes grow up to in length. Very little is known about their biology, though they are widely distributed in all oceans, except the polar seas. Specimens have been recorded as far north as Greenland. They are often caught as bycatch by vessels long-lining for tuna. The generic name is from Greek ''a-'' meaning "without", ' meaning "scale", and ''sauros'' meaning "lizard". Species The two currently recognized extant species in this genus are: * ''Alepisaurus brevirostris'' Gibbs, 1960 (short-snouted lancetfish) * '' Alepisaurus ferox'' R. T. Lowe, 1833 (long-snouted lancetfish) The anatomic difference between the two species is the shape of the snout, which is long and pointed in ''A. ferox'', and slightly shorter in ''A. brevirostris''. The long-snouted lancefish is found in the tropical and northern sub-tropical waters of the Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eugonatonotus Chacei
''Eugonatonotus'' is a genus of decapods and is the only genus in the monotypic family Eugonatonotidae. The species of this genus are found in Central America, Southeastern Asia and Australia. Species: *'' Eugonatonotus chacei'' Chan & Yu, 1991 *''Eugonatonotus crassus ''Eugonatonotus crassus'' is a species of crustacean first described by Alphonse Milne-Edwards Alphonse Milne-Edwards (Paris, 13 October 1835 – Paris, 21 April 1900) was a French mammalogist, ornithologist, and carcinologist. He was Englis ...'' References {{Taxonbar, from=Q11843284, from2=Q15730610 Decapods Decapod genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitochondrial DNA
Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that convert chemical energy from food into a form that cells can use, such as adenosine triphosphate (ATP). Mitochondrial DNA is only a small portion of the DNA in a eukaryotic cell; most of the DNA can be found in the cell nucleus and, in plants and algae, also in plastids such as chloroplasts. Human mitochondrial DNA was the first significant part of the human genome to be sequenced. This sequencing revealed that the human mtDNA includes 16,569 base pairs and encodes 13 proteins. Since animal mtDNA evolves faster than nuclear genetic markers, it represents a mainstay of phylogenetics and evolutionary biology. It also permits an examination of the relatedness of populations, and so has become important in anthropology and biogeography. Origin Nuclear and mitochondrial DNA are thought to be of separate evolutionary origin, with the mtDNA being derived ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetics
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in taxonomy and biogeography. Molecular phylogenetics and molecular evolution correlate. Molecular evolution is the process of selective changes (mutations) at a molecular level (genes, proteins, etc.) throughout various branches in the tree of life (evolution). Molecular phylogenetics makes inferences of the evolutionary relationships that arise due to molecular evolution and results in the construction of a phylogenetic tree. History The theoretical frame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Oklahoma Press
The University of Oklahoma Press (OU Press) is the publishing arm of the University of Oklahoma. Founded in 1929 by the fifth president of the University of Oklahoma, William Bennett Bizzell, it was the first university press to be established in the American Southwest. The OU Press is one of the leading presses in the region, and is primarily known for its titles on the American West and Native Americans, though the press publishes texts on other subjects as well, ranging from wildlife to ancient languages.Oklahoma Historical Society's Encyclopaedia of Oklahoma History and Culture Tornadoes and severe weather are another focus. The press releases around 80 books every year. A profile of the University of Oklahoma Press from 2018 quotes OU President David Boren as saying: "The OU Press is one of the crown jewels of the University of Oklahoma.” The Arthur H. Clark Company (founded 1902) was a major printer of publications related to the history of the Western United States. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Procaris
''Procaris'' is a genus of shrimp in the family Procarididae. It contains the following species: *''Procaris ascensionis ''Procaris ascensionis'' is a species of shrimp, known only from two saltwater pools on Ascension Island Ascension Island is an isolated volcanic island, 7°56′ south of the Equator in the South Atlantic Ocean. It is about from the coast ...'' Chace & Manning, 1972 *'' Procaris chacei'' Hart & Manning, 1986 *'' Procaris hawaiana'' Holthuis, 1973 *'' Procaris mexicana'' von Sternberg & Schotte, 2004 *'' Procaris noelensis'' Bruce & Davie, 2006 References Decapod genera Taxonomy articles created by Polbot Taxa named by Raymond B. Manning {{decapod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plesiomorphy
In phylogenetics, a plesiomorphy ("near form") and symplesiomorphy are synonyms for an ancestral character shared by all members of a clade, which does not distinguish the clade from other clades. Plesiomorphy, symplesiomorphy, apomorphy, and synapomorphy, all mean a trait shared between species because they share an ancestral species. Apomorphic and synapomorphic characteristics convey much information about evolutionary clades and can be used to define taxa. However, plesiomorphic and symplesiomorphic characteristics cannot. The term ''symplesiomorphy'' was introduced in 1950 by German entomologist Willi Hennig. Examples A backbone is a plesiomorphic trait shared by birds and mammals, and does not help in placing an animal in one or the other of these two clades. Birds and mammals share this trait because both clades are descended from the same far distant ancestor. Other clades, e.g. snakes, lizards, turtles, fish, frogs, all have backbones and none are either birds n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustaceana
''Crustaceana'' is a peer-reviewed scientific journal specialising in carcinology. It was established in 1960 and is published monthly by Brill Publishers. The journal is abstracted and indexed by BIOSIS Previews, the Science Citation Index, The Zoological Record, and GeoRef. According to the ''Journal Citation Reports'', the journal has a 2011 impact factor of 0.464. The journal is edited by J.C. von Vaupel Klein. It charges an unspecified publication fee from authors of all regular papers, and an optional open access fee of USD 1830.CrustaceanaInstructions for Authors Brill Publishers Brill Academic Publishers (known as E. J. Brill, Koninklijke Brill, Brill ()) is a Dutch international academic publisher founded in 1683 in Leiden, Netherlands. With offices in Leiden, Boston, Paderborn and Singapore, Brill today publishes 27 ... References External links * *{{Official website, http://www.brill.nl/crustaceana Carcinology journals Publications established in 1960 Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alepisaurus Ferox
''Alepisaurus ferox'', the long snouted lancetfish, longnose lancetfish, or cannibal fish, is a species of lancetfish found in the ocean depths down to 1,830 m (6,000 ft). This species grows to in total length and a weight of . It is often called the cannibal fish because numerous individuals have been caught after having devoured other lancetfish. Habitat and ecosystem Habitat ''A. ferox'' lives in deep-water oceans in the Western and Eastern Pacific from the Aleutian Islands to Chile and the Western Atlantic from the Gulf of Maine to the Gulf of Mexico, including the Caribbean Sea, and the Eastern Atlantic, Indian Ocean, Northwest Atlantic, and the China Sea. The ''A. ferox'' can also be found as far north as Russia. Due to the range of habitat the ''A. ferox'' can be found in, it can be caught with fisheries that are catching tuna. The daily vertical migrations from the epipelagic all the way down to the mesopelagic or bathypelagic zones are taken by the ''A. f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
