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Palinura
The Achelata is an infra-order of the decapod crustaceans, holding the spiny lobsters, slipper lobsters and their fossil relatives. Description The name "Achelata" derives from the fact that all the members of this group lack the chelae (claws) that are found on almost all other decapods (from the Ancient Greek , = "not", , = "claw"). They are further united by the great enlargement of the second antennae, by the special "phyllosoma" form of the larva, and by a number of other characters. Classification and fossil record The infraorder Achelata belongs to the group Reptantia, which consists of the walking/crawling decapods (lobsters and crabs). The cladogram below shows Achelata's placement within the larger order Decapoda, from analysis by Wolfe ''et al.'', 2019. Achelata contains the spiny lobsters (Palinuridae), the slipper lobsters (Scyllaridae) and the furry lobsters (Synaxidae, now usually included in Palinuridae), as well as two extinct families, Cancrinidae and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polychelida
Polychelida is an infraorder of decapod crustaceans. Fossil representatives are known dating from as far back as the Upper Triassic. A total of 38 extant species, all in the family Polychelidae, and 55 fossil species have been described. History Polychelida had traditionally been included in the infraorder Palinura, alongside the spiny lobsters and slipper lobsters (now in the infraorder Achelata). In 1995, Gerhard Scholtz and Stefan Richter of the carried out a phylogenetic study of the "Reptantia", and concluded that "Palinura" was paraphyletic. They therefore abandoned that taxon and introduced instead the new clade Polychelida. Classification Polychelida belongs to the group Reptantia, which consists of the walking/crawling decapods (lobsters and crabs). Polychelida is the sister clade to the infraorder Astacidea, which contains the "true" lobsters and crayfish. The cladogram below shows Polychelida's placement within the larger order Decapoda, from analysis by Wolfe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cancrinidae
''Cancrinos'' is a genus of fossil crustacean closely allied with the slipper lobsters. One species is known, ''C. claviger'' from the Jurassic of southern Germany. Taxonomy Fossils of ''Cancrinos'' are rare, and their state of preservation is often imperfect. Count Georg zu Münster first described ''Cancrinos'' in 1839, based on material from the Upper Jurassic Solnhofen limestones of southern Germany. He described two species, ''Cancrinos claviger'' and ''C. latipes'', differentiated by the size of the second antennae, but the two are now considered to be synonyms. Further specimens have been discovered in Upper Cretaceous lithographic limestones of Lebanon, and described as a new species, ''C. libanensis''; however, Haug ''et al.'' (2016) made it the type species of a separate genus '' Paracancrinos''. Classification Although Münster was unable to discern any living relatives of ''Cancrinos'' during his original description, Reinhard Förster proposed in 1984 that ''Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larva De Phyllosoma
A larva (; plural larvae ) is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle. The larva's appearance is generally very different from the adult form (''e.g.'' caterpillars and butterflies) including different unique structures and organs that do not occur in the adult form. Their diet may also be considerably different. Larvae are frequently adapted to different environments than adults. For example, some larvae such as tadpoles live almost exclusively in aquatic environments, but can live outside water as adult frogs. By living in a distinct environment, larvae may be given shelter from predators and reduce competition for resources with the adult population. Animals in the larval stage will consume food to fuel their transition into the adult form. In some organisms like polychaetes and barnacles, adults are immobil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panulirus Argus
''Panulirus argus'', the Caribbean spiny lobster, is a species of spiny lobster that lives on reefs and in mangrove swamps in the western Atlantic Ocean. Anatomy ''P. argus'' have long, cylindrical bodies covered with spines. Two large spines form forward-pointing "horns" above the eyestalks. They are generally olive greenish or brown, but can be tan to mahogany. There is a scattering of yellowish to cream-colored spots on the carapace and larger (usually four to six) yellow to cream-colored spots on the abdomen. They have no pair of antennae that are longer than the body, and covered with forward pointing spines. The bases of the second antennae are thick, can have a bluish tinge, and are likewise covered with rows of spines. The legs are usually striped longitudinally with blue and yellow and terminate in a single spine-like point. The somites of the abdomen are smooth and have a shallow furrow across the middle. Each has pairs of swimmerets on the underside that are yellow a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macrobrachium Sp
''Macrobrachium'' is a genus of freshwater prawns or shrimps characterised by the extreme enlargement of the second pair of pereiopods, at least in the male. Species It contains these species: *''Macrobrachium acanthochirus'' F. Villalobos, 1967 *''Macrobrachium acanthurus'' (Wiegmann, 1836) *''Macrobrachium acherontium'' Holthuis, 1977 *''Macrobrachium adscitum'' Riek, 1951 *''Macrobrachium aemulum'' (Nobili, 1906) *''Macrobrachium agwi'' Klotz, 2008 *''Macrobrachium ahkowi'' Chong & Khoo, 1987 *''Macrobrachium altifrons'' (Henderson, 1893) *''Macrobrachium amazonicum'' (Heller, 1862) *''Macrobrachium americanum'' Spence Bate, 1868 *''Macrobrachium amplimanus'' Cai & Dai, 1999 *''Macrobrachium andamanicum'' (Tiwari, 1952) *''Macrobrachium aracamuni'' Rodríguez, 1982 *''Macrobrachium asperulum'' (von Martens, 1868) *''Macrobrachium assamense'' (Tiwari, 1958) *''Macrobrachium atabapense'' S. Pereira, 1986 *''Macrobrachium atactum'' Riek, 1951 *''Macrobrachium auratum'' Short, ... [...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 vari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Procarididea
Procarididea is an infraorder of decapods, comprising only eleven species. Six of these are in the genera '' Procaris'' and '' Vetericaris'', which together make up the family Procarididae. The remaining five species are only known from fossils and belong to the genus '' Udora'', which cannot yet be assigned to any family. The cladogram below shows Procarididea's relationships to other relatives within 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 esti ..., from analysis by Wolfe ''et al.'', 2019. References Decapods Arthropod infraorders {{Decapoda-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stenopodidea
The Stenopodidea or boxer shrimps are a small group of decapod crustaceans. Often confused with Caridea shrimp or Dendrobranchiata prawns, they are neither, belonging to their own group. Anatomy They can be differentiated from the Dendrobranchiata prawns by their lack of branching gills, and by the fact that they brood their eggs instead of directly releasing them into the water. They differ from the Caridea shrimp by their greatly enlarged third pair of legs. Taxonomy Stenopodidea belongs to the order Decapoda, and is most closely related to the Caridea and Procarididea infraorders of shrimp. The cladogram below shows Stenopodidea's relationships to other relatives within Decapoda, from analysis by Wolfe ''et al.'', 2019. There are 71 extant species currently recognized within Stenopodidea, divided into 12 genera. Three fossil species are also recognized, each belonging to a separate genus. The earliest fossil assigned to the Stenopodidea is '' Devonostenopus pennsylvan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleocyemata
Pleocyemata is a suborder of decapod crustaceans, erected by Martin Burkenroad in 1963. Burkenroad's classification replaced the earlier sub-orders of Natantia and Reptantia with the monophyletic groups Dendrobranchiata (prawns) and Pleocyemata. Pleocyemata contains all the members of the Reptantia (including crabs, lobsters, crayfish, and others), as well as the Stenopodidea (which contains the so-called "boxer shrimp" or "barber-pole shrimp"), and Caridea, which contains the true shrimp. Anatomy All members of the Pleocyemata are united by a number of features, the most important of which is that the fertilised eggs are incubated by the female, and remain stuck to the pleopods (swimming legs) until the zoea larvae are ready to hatch. It is this characteristic that gives the group its name. Pleocyemata also possess a lamellar gill structure as opposed to the branches found in the Dendrobranchiata. Systematics The cladogram below shows Pleocyemata as the sister clade to Den ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Litopenaeus Setiferus
''Litopenaeus setiferus'' (also accepted: ''Penaeus setiferus'', and known by various common names including Atlantic white shrimp, '' white shrimp'', ''gray shrimp'', ''lake shrimp'', ''green shrimp'', ''green-tailed shrimp'', ''blue-tailed shrimp'', ''rainbow shrimp'', ''Daytona shrimp'', ''Mayport Shrimp'', ''common shrimp'', ''southern shrimp'', and, in Mexico, ') is a species of prawn found along the Atlantic coast of North America and in the Gulf of Mexico. It was the subject of the earliest shrimp fishery in the United States. Distribution The range of ''L. setiferus'' extends from Fire Island, New York to Ciudad Campeche, Mexico. It requires warm water, and is unable to survive below , with appreciable growth only occurring at temperatures over . Description ''Litopenaeus setiferus'' may reach a total length (excluding antennae) of , with females being larger than males. The antennae may be up to three times the length of the body, which is bluish white with a tinge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendrobranchiata
Dendrobranchiata is a suborder of decapods, commonly known as prawns. There are 540 extant species in seven families, and a fossil record extending back to the Devonian. They differ from related animals, such as Caridea and Stenopodidea, by the branching form of the gills and by the fact that they do not brood their eggs, but release them directly into the water. They may reach a length of over and a mass of , and are widely fished and farmed for human consumption. Shrimp and prawns While Dendrobranchiata and Caridea belong to different suborders of Decapoda, they are very similar in appearance, and in many contexts such as commercial farming and fisheries, they are both often referred to as "shrimp" and "prawn" interchangeably. In the United Kingdom, the word "prawn" is more common on menus than "shrimp", while the opposite is the case in North America. The term "prawn" is also loosely used to describe any large shrimp, especially those that come 15 (or fewer) to the pound (su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
