| Caridina longidigita | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| Infraorder: | Caridea |
| Family: | Atyidae |
| Genus: | Caridina |
| Species: | C. longidigita |
| Binomial name | |
| Caridina longidigita Cai & Wowor, 2007 | |
 | |
| Lake Poso, Sulawesi, Indonesia | |
Caridina longidigita, also known as the Sulawesi fan shrimp, is a species of freshwater atyid shrimp. [1]
Caridina longidigita possesses well-developed eyes, extending to approximately 0.8 times the length of the basal segment of the antennular peduncle. The antennular peduncle itself is around 0.86 times the length of the carapace. It consists of a basal segment that matches the combined length of the second and third segments. Notably, the stylocerite located on the antennular peduncle reaches near the end of the basal segment. [2]
The rostrum of C. longidigita is a distinctive feature, extending close to or slightly beyond the end of the scaphocerite. It curves upwards anteriorly and is armed with a varying number of teeth on its dorsal and ventral sides. Along the dorsal side, the rostrum carries 12 to 21 teeth, mainly located on the posterior half to three-fourths of its length. Some teeth can also be found on the carapace posterior to the orbital margin. The ventral side of the rostrum bears 10 to 18 teeth. [2]
The mandible exhibits an incisor process ending in irregular teeth, while the molar process is truncated. The lower lacinia of the maxillula is broadly rounded, and the upper lacinia is elongated with distinct teeth along its inner margin. The maxilla has subdivided upper endites and a slender, elongated palp. The scaphognathite of the maxilla tapers posteriorly and is adorned with numerous long, curved setae at its posterior end. The first maxilliped features a palp that terminates in a broad triangular form, and the second maxilliped has a reduced podobranch. [2]
Caridina longidigita possesses multiple abdominal segments, the sixth segment is approximately half the length of the carapace and shorter than the telson, while being twice as long as the fifth segment. The telson itself is 3.1 times longer than its width and lacks a terminating projection. On the distal half of the telson, there are four pairs of dorsal spinules. Additionally, four pairs of distal spines are present, with the lateral pair being the longest, followed by the intermediate pairs, and the median pair being the shortest. Both the telson and preanal carina bear spines. The shrimps uropodal diaeresis possesses 11 to 14 movable spinules. [2]
For male individuals, their first pleopod displays an endopod that is subtriangular and about 0.3 times the length of the exopod. No appendix interna is present in this context. Moving to the second pleopod, the appendix masculina is relatively short, reaching about half the length of the endopod. The appendix interna, also short, measures approximately 0.3 times the length of the appendix masculina. [2]
Caridina longidigita is an endemic species exclusively native to Lake Poso, located in Sulawesi, Indonesia. [2] This freshwater lake spans an area of 323.2 square kilometers and serves as the only natural habitat for C. longidigita. [3] C. longidigita can be found on the rocky shores of the lake, on gravel and sandy substrates. [2] [3] The species is frequently found underwater at depths below 3 meters where it can be found living on the surface of large boulders. [3] Water temperature in the lake ranges from 24 °C to 29 °C (75 °F - 84 °F). [4] The water is also alkaline ranging between 9 - 10 ph. [4]
The species name longidigita combines two different Latin words, "long" and "digita" referring to its extremely long, fan-like fingers. [2]
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 330 millimetres (13 in) and a mass of 450 grams (1.0 lb), and are widely fished and farmed for human consumption.
Malacostraca is the second largest of the six classes of pancrustaceans just behind hexapods, containing about 40,000 living species, divided among 16 orders. Its members, the malacostracans, display a great diversity of body forms and include crabs, lobsters, crayfish, shrimp, krill, prawns, woodlice, amphipods, mantis shrimp, tongue-eating lice and many other less familiar animals. They are abundant in all marine environments and have colonised freshwater and terrestrial habitats. They are segmented animals, united by a common body plan comprising 20 body segments, and divided into a head, thorax, and abdomen.
Isopoda is an order of crustacean, which includes woodlice and their relatives. Members of this group are called Isopods and include both terrestrial and aquatic species. All have rigid, segmented exoskeletons, two pairs of antennae, seven pairs of jointed limbs on the thorax, and five pairs of branching appendages on the abdomen that are used in respiration. Females brood their young in a pouch under their thorax.
The decapod is made up of 20 body segments grouped into two main body parts: the cephalothorax and the pleon (abdomen). Each segment may possess one pair of appendages, although in various groups these may be reduced or missing. They are, from head to tail:
Triops longicaudatus is a freshwater crustacean of the order Notostraca, resembling a miniature horseshoe crab. It is characterized by an elongated, segmented body, a flattened shield-like brownish carapace covering two thirds of the thorax, and two long filaments on the abdomen. The genus name Triops comes from Greek ὤψ or ṓps, meaning "eye" prefixed with Latin tri-, "three", in reference to its three eyes. Longicaudatus is an Latin neologism combining longus ("long") and caudatus ("tailed"), referring to its long tail structures. Triops longicaudatus is found in fresh water ponds and pools, often in places where few higher forms of life can exist.
Eucrenonaspides oinotheke is a species of crustacean in the family Psammaspidae, endemic to Tasmania, the only species described in the genus Eucrenonaspides. The Eucrenonaspides is a variation of the Anaspidaceans. It was described from a spring at 9 Payton Place, Devonport, Tasmania in 1980, making it "the first spring-dwelling syncarid recorded from the Australian region". It is listed as a vulnerable species on the IUCN Red List. A further undescribed species is known from south-western Tasmania.
Gynodiastylidae is one of the eight most commonly recognised families of crustaceans of the order Cumacea. They are especially prevalent in the southern hemisphere, with some types described from Japan, Thailand and the Persian Gulf. Most are found at less than 100 metres (330 ft) depth.
Leuconidae is a family of marine hooded shrimp. The family was established by Georg Ossian Sars in his 1878 study of Mediterranean cumaceans.
Neoglyphea inopinata is a species of glypheoid lobster, a group thought long extinct before Neoglyphea was discovered. It is a lobster-like animal, up to around 15 centimetres (5.9 in) in length, although without claws. It is only known from 17 specimens, caught at two sites – one at the entrance to Manila Bay in the Philippines, and one in the Timor Sea, north of Australia. Due to the small number of specimens available, little is known about the species, but it appears to live up to five years, with a short larval phase. A second species, previously included in Neoglyphea, is now placed in a separate genus, Laurentaeglyphea.
Procaris hawaiana is a species of shrimp in the family Procarididae, from Maui, Hawaii. The species is very similar to Procaris ascensionis from Ascension Island. In P. ascensionis the integument is less firm, the rostrum is shorter, the cervical groove is more distinct, and the third abdominal somite reaches less far posteriorly over the fourth; also the scaphocerite has the final tooth still less distinct than in P. hawaiana, and the last segment of its antennal peduncle is less slender.
Palaemonella burnsi is a species of shrimp in the family Palaemonidae, from Maui, Hawaii. This species is closest to Palaemonella lata, which it resembles in the broad scaphocerite in which the lamella overreaches the final tooth, and in the unarmed merus of the second pereiopods. It differs from P. lata in the much longer fused part of the two branches of the upper antennular flagellum, in the relatively much longer fingers and shorter palm of the second legs, in the unarmed carpus of the second legs. It is named after John A. Burns, Governor of Hawaii, for declaring the Ahiki Kinau area a nature reserve.
Periclimenes pholeter, is a species of shrimp belonging to the family Palaemonidae. The species is closest to Periclimenes indicus, P. obscurus and P. toloensis, resembling these species in the presence of an epigastric tooth on the carapace, the shape of the abdomen, the spinulation of the carapace, and the unarmed fingers of the first chelipeds. P. pholeter most resembles P. indicus by the elongatecarpus and long fingers of the second pereiopods, differing in these features from P. toloensis, which has the fingers slightly less than half as long as the palm. In P. obscurus the fingers are shorter than the palm, but the carpus is about as long as the palm. From P. indicus, this species differs: by the greater size; by the much higher rostrum and the greater number of ventral rostral teeth; by the shorter eye; by the less slender antennular peduncle; by the more deeply cleft upper antennular flagellum; by the more robust scaphocerite; by the fingers of the first pereiopods ; by the more slender pereiopods, especially the fifth, which is much longer than the ischium.
Squilla empusa is a species of mantis shrimp found in coastal areas of the western Atlantic Ocean. It excavates and occupies a burrow in soft sediment from which it emerges, mainly at night, to feed on fish and invertebrate prey.
Kraussillichirus kraussi, commonly named the common sandprawn or pink prawn, is a species of ghost shrimp, an African crustacean in the family Callichiridae.
Alpheus tricolor is a crustacean belonging to the family of snapping shrimp. It was first isolated in Indonesia and Sri Lanka. It counts with a setose carapace, an acute rostrum, shallow adrostral furrows and a basicerite with a strong ventrolateral tooth. The lamella of its scaphocerite is not reduced, with an anterior margin that is concave. Its third maxilliped counts with an epipodial plate bearing thick setae, while its first chelipeds are found with their merus bearing a strong disto-mesial tooth; its third pereiopod has an armed ischium, with a simple and conical dactylus. Its telson is broad, distally tapering, with 2 pairs of dorsal spines. The species is named after its characteristic colour pattern, including white, red and orange.
Alpheus fasqueli is a crustacean belonging to the family of snapping shrimp. It was first isolated in Sri Lanka. It counts with a setose carapace, an acute and carinate rostrum, and unarmed orbital hoods. Its basicerite has a strong ventrolateral tooth. The lamella of its scaphocerite is not reduced. Its third maxilliped counts with an epipodial plate bearing thick setae, while its first chelipeds are found with their merus bearing a strong disto-mesial tooth; its third pereiopod has an armed ischium, with a simple and conical dactylus. Its telson is broad, distally tapering, with 2 pairs of dorsal spines. The species is named after Frédéric Fasquel, a photographer who contributed rare shrimp specimens for the Muséum national d'histoire naturelle.
Aristaeomorpha foliacea, the giant red shrimp or giant gamba prawn, is a species of deep water benthopelagic decapod crustacean. It is found in all the world's oceans in the temperate and tropical zones. It is subject to some commercial fishing activity in the Mediterranean Sea.
Caridina typus, also known as the Australian Amano Shrimp, is a species of amphidromous atyid shrimp. It was first described by H. Milne-Edwards in 1837. It has a broad distribution in tropical freshwater habitats in the Indo-West Pacific region, with its western range extending to eastern Africa and its eastern range extending to Polynesia. It is commonly found in rivers and streams in coastal areas or on islands. C. typus is known to play a role in sediment distribution and shredding leaf litter, manipulating the environment using their pereiopods and setaceous chelae. The species is also an important component of the food web, both as scavengers and as prey items, and is considered a keystone species for the stream ecosystems it inhabits. According to Choy and Marshall, the species can be characterized by a "short, dorsally unarmed rostrum, the presence of epipods on the first four pairs of pereiopods, and the presence of an appendix interna on the endopod of the first pleopod of both sexes." It can be kept in captivity by aquarists as pets.
Caridina sarasinorum is a species of freshwater atyid shrimp. It is one of eight Caridina species endemic to Lake Poso.
Boreomysis inopinata is a species of mysid crustaceans from the subfamily Boreomysinae. It is also a member of the nominotypical subgenus Boreomysis sensu stricto. The species is a deepwater bathypelagic mysid, found only from the Tasman Sea off Australia.
