Periclimenaeus | |
---|---|
Periclimenaeus hecate | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Subphylum: | Crustacea |
Class: | Malacostraca |
Order: | Decapoda |
Family: | Palaemonidae |
Genus: | Periclimenaeus Borradaile, 1915 [1] |
Type species | |
Coralliocaris tridendatus Borradaile, 1915 [2] |
Periclimenaeus is a genus of decapod crustaceans of the family Palaemonidae which is part of the infraorder Caridea. The genus was named by the English carcinologist Lancelot Alexander Borradaile in 1915. He set out the distinguishing features of the genus as:
Body rather stout, cephalothorax deep, a good deal compressed, abdomen greatly curved Thorax without dorsal swelling. Rostrum rather short, compressed, toothed above only. Outer antennular flagellum not deeply cleft. Antennal scale of good breadth. Mandible without palp. Second maxilliped without podopalp. Third maxilliped narrow, with vestigial arthrobranch.
— L.A. Borradaile, [2]
Pericimaenaeus robustus is known only from the type specimen which was collected off Amirante Islands by the Western Indian Ocean Expeditions of Prof. J. Stanley Gardiner and described in 1915 and again in 1917 by Borradaile, it was re-described by Dr A.J. "Sandy" Bruce of the Queensland Museum in 2005. [3]
Periclimenaeus consists of number of species of small shrimps classified in the subfamily Pontoniinae. They occur mainly in tropical seas, especially in and around coral reefs. Periclimanaeus shrimps live in association with a variety of hosts, mostly sponges and ascidian tunicates, where they normally live in the hosts' internal cavities as pairs formed of a male and a female. Characteristics of the genus include the presence of grossly unequal chelae on the second pair of walking legs, the larger of which has a conspicuous molar process on the seventh and terminal segment of the leg, which sits opposite a depression on the fixed finger, this is used to produce sound, a feature which is convergent with similar structures in the related genus Coralliocaris and in some unrelated genera of snapping shrimps from the family Alpheidae. [4]
Periclimenaeus is the genus in the Palaemonidae with the second highest number of species with their distribution centred on the Indo-West Pacific region where there are 60 or so species with a further 14 identified so far in the Atlantic and eastern Pacific. The first species to be described was described from specimens caught in the Torres Strait by HMS Alert during 1881-82. These specimens were described by Edward J. Miers as Coralliocaris tridendatus, this was then assigned to Periclimenaeus as P. tridentatus after Borradaile named the genus. [5]
The following species are currently recognised: [6]
The Caridea, commonly known as caridean shrimp or true shrimp, are an infraorder of shrimp within the order Decapoda. This infraorder contain 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 ghost shrimps, mud shrimps, and boxer shrimps – are not true shrimps, but many have evolved features similar to true shrimps.
Hippolytidae is a family of cleaner shrimp, also known as broken-back shrimp or anemone shrimp. The term "broken-back shrimp" also applies to the genus Hippolyte in particular and "cleaner shrimp" is sometimes applied exclusively to Lysmata amboinensis.
Atyidae is a family of shrimp, present in all tropical and most temperate waters of the world. Adults of this family are almost always confined to fresh water. This is the only family in the superfamily Atyoidea.
Alpheus is a genus of snapping shrimp of the family Alpheidae. This genus contains in excess of 291 species, making this the most species-rich genus of shrimp. Like other snapping shrimp, the claws of Alpheus are asymmetrical, with one of the claws enlarged for making a popping noise. Some species in the genus enter into symbiotic relationships with gobiid fishes.It's also the noisiest of all sea creatures and can immobilize small fish with its high pitched frequency.
Palaemonetes, its common names include glass shrimp, ghost shrimp, feeder shrimp, is a genus of caridean shrimp comprising a geographically diverse group of fresh water, brackish and marine crustaceans. Conventionally, Palaemonetes included the following species:
Palaemon is a genus of caridean shrimp of the family Palaemonidae. The conventional circumscription of the genus Palaemon is probably paraphyletic. Molecular data suggest that Palaemonetes, as well as the genera Exopalaemon and Couteriella, are nested within Palaemon. Phylogenetic affinities in these groups correspond better with geographical origin than conventional genus assignments.
Ancylomenes magnificus, also known as the Magnificent Anemone Shrimp, is a species of cleaner shrimp common to the Western Pacific Ocean at depths of 3–29 metres (10–95 ft). They are commonly found on stony coral, Catalaphyllia and the sea anemone, Dofleinia armata.
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.
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.
Lysmata is a genus of shrimp in the infraorder Caridea, the caridean shrimp. The genus belongs to the family Lysmatidae. Lysmata are popular ornamental shrimp in the marine aquarium trade for their bright color patterns, interesting behaviors, and ability to control certain aquarium pests such as sea anemones of the genus Aiptasia. They are known to command high prices on the pet market.
Cuapetes is a genus of shrimp in the family Palaemonidae, comprising the following species:
Ancylomenes is a genus of shrimp, erected in 2010 to accommodate the group of species around "Periclimenes aesopius". Members of the genus are widely distributed in the warm oceans of the world, and live in association with cnidarians; most are cleaner shrimp.
Palaemonella is a genus of shrimp in the family Palaemonidae, containing the following species:
Ancylomenes holthuisi is a species of marine shrimp in the family Palaemonidae. It is widespread throughout the tropical waters of the Indo-West Pacific. It is a cleaner shrimp and usually lives in association with sea anemones, scleractinian corals or jellyfish.
Urocaridella is a genus of shrimps comprising the following species:
Thoridae is a family of cleaner shrimp, also known as broken-back shrimp or anemone shrimp.
Parhippolyte is a genus of cave dwelling decapod crustaceans, known as cave shrimps from the family Barbouriidae The type species Parhipplyte uvea was described in 1900 by the English carcinologist Lancelot Alexander Borradaile from specimens collected in the south western Pacific by Arthur Willey. As their vernacular name of cave shrimp suggests these species are generally found in marine caves as well as anchialine ponds and lagoons.
Urocaridella cyrtorhyncha is a species of shrimp in the family Palaemonidae. The species is similar to U. urocaridella, U. antonbruunii, and U. pulchella. The species is found in the Indian and Pacific Oceans, including the Red Sea.
Periclimenes, commonly known as glass shrimp or cleaner shrimp, is a commensal and often symbiotic genus of semi-transparent shrimp within the family Palaemonidae. Species of this large genus feature a wide variety of coloration and patterns, widespread distribution throughout much of the world's tropical oceans, and are often sought out for aquarium trade.