| Platycopiidae | |
|---|---|
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| Platycopia perplexa | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Copepoda |
| Infraclass: | Progymnoplea Lang, 1948 |
| Order: | Platycopioida Fosshagen, 1985 |
| Family: | Platycopiidae G. O. Sars, 1911 |
| Genera | |
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Platycopiidae is a family of copepods. Until the description of Nanocopia in 1988, it contained the single genus Platycopia. [1] It now contains four genera, three of which are monotypic; the exception is Platycopia, with 8 species.
The family Platycopiidae was erected by Georg Ossian Sars when he described the new species P. perplexa, and included it in the order Calanoida. [2] In 1948, Karl Georg Herman Lang erected a new suborder, Progymnoplea, for the family, and in 1985, Audun Fosshagen & Thomas Iliffe created the order Platycopioida to contain the Platycopiidae, initially placed alongside Calanoida in the superorder Gymnoplea. [2] Most recently, Huys & Boxshall inferred that Platycopiidae was the earliest branching copepod lineage, making it the sister taxon to all other copepods; they therefore raised Progymnoplea to the rank of infraclass, to accommodate Platycopioida alone, with all other copepods being placed in the Neocopepoda. [2]
Members of the Platycopiidae have a primitive form, thought to be similar to the most recent common ancestor of all copepods. Few synapormorphies have been found to unite the family, but they include the presence of a second dorsal seta (hair) on particular segments of the legs. [3] They share with calanoid copepods the possession of Von Vaupel Klein's organ, a sensory organ near the base of the first swimming leg. [3]
Antrisocopia prehensilisFosshagen, 1985 is a critically endangered species from a limestone anchialine cave in Bermuda, known from only five mature specimens. [4]
Nanocopia minutaFosshagen, 1988 is a critically endangered species from the same anchialine cave as Antrisocopia, and is known from only two specimens. [5]
Sarsicopia polarisMartínez Arbizu, 1997 was collected in 1993 from a depth of 534 metres (1,752 ft) in the Barents Sea. [2]
Platycopia comprises eight species, distributed in the North Sea, the eastern seaboard of North America, the Bahamas, Mauritania and Japan. [2] The first species to be described was P. perplexa, named by Georg Ossian Sars in 1911. [2]
The Cyclopoida are an order of small crustaceans from the subclass Copepoda. Like many other copepods, members of Cyclopoida are small, planktonic animals living both in the sea and in freshwater habitats. They are capable of rapid movement. Their larval development is metamorphic, and the embryos are carried in paired or single sacs attached to first abdominal somite.
Antrisocopia is a genus of Copepods in the family Platycopiidae. There is at least one described species in Antrisocopia, A. prehensilis.
Bermudamysis speluncola is a species of crustacean in the family Mysidae, endemic to Bermuda, and the only species in the genus Bermudamysis.
Calamoecia is a genus of copepods in the family Centropagidae confined to Australasia. It is thought to have evolved since the separation of the Australian continent from Antarctica. Three of the Australian endemic species are listed as vulnerable species on the IUCN Red List. The genus contains the following species:
Erebonectes is a genus of crustacean in family Epacteriscidae, containing two troglobitic species. E. nasioticus was discovered in Bermuda and described in 1985; it is listed as critically endangered on the IUCN Red List. E. macrochaetus was found on Middle Caicos and described in 1994.
Heliodiaptomus kolleruensis is a species of copepod in the family Diaptomidae. It was described in 1981 from specimens collected in the Krishna River, Lake Kolleru and bodies of water in Guntur district, Andhra Pradesh, India. It is listed as a vulnerable species on the IUCN Red List.
Ingolfiella longipes is a species of amphipod crustacean in the family Ingolfiellidae. It is known from a single specimen held at the Naturalis Biodiversity Center. It was collected from Walsingham Sink Cave, an anchialine cave in Hamilton Parish, Bermuda, and is thus considered to be critically endangered.
Mictocaris halope is the only species of cave crustacean in the monotypic genus Mictocaris. It is placed in its own family, Mictocarididae, and is sometimes considered the only member of the order Mictacea. Mictocaris is endemic to anchialine caves in Bermuda, and grows up to 3.5 mm (0.14 in) long. Its biology is poorly known.
Nanocopia is a genus of Copepods in the family Platycopiidae. There is at least one described species in Nanocopia, N. minuta.
Notodiaptomus is a genus of copepods in the family Diaptomidae. It is the most widely distributed, most abundant and most species-rich genus of freshwater calanoid copepods in the Neotropics. The genus was erected in 1936 by Friedrich Kiefer for eleven species formerly placed in a wider Diaptomus. Notodiaptomus deitersi was chosen to be the type species by Raúl Adolfo Ringuelet in 1958.
Paracyclopia is a genus of copepods in family Pseudocyclopiidae, containing only the species P. naessi. It is endemic to Bermudan karsts and is critically endangered.
Pseudomoraria is a genus of copepods in the family Canthocamptidae. It is monotypic being represented by the single species Pseudomoraria triglavensis. It has only been found in a small alpine lake Močilec at an altitude of 1,690 metres (5,540 ft) in the Julian Alps of Triglav National Park, Slovenia. It is listed as a vulnerable species on the IUCN Red List.
Skistodiaptomus is a genus of freshwater copepods in the family Diaptomidae, found across North America. The genus contains eight species, three of which are endemic to the United States and are listed on the IUCN Red List as vulnerable species (VU) or Data Deficient (DD).
Parhippolyte sterreri is a species of marine decapod crustacean in the family Barbouriidae, formerly placed in the genus Somersiella. It is found in marine caves around the Bahamas, Cuba and Mexico and inland anchialine caves in Bermuda.
Speleophria bivexilla is a species of copepod in the family Speleophriidae. It is endemic to Bermuda.
Speleophria scottodicarloi is a species of crustacean in the family Speleophriidae. It is endemic to Chalk Cave, a collapsed cave in Smith's Parish, Bermuda, and it listed as critically endangered on the IUCN Red List. The pool it inhabits also contains Barbouria cubensis, Somersiella sterreri and Paracyclopia naessi.
Sarsicopia is a genus of Copepods in the family Platycopiidae. There is at least one described species in Sarsicopia, S. polaris.
Platycopia is a genus of Arthropods in the family Platycopiidae. There are about eight described species in Platycopia.
The clade Multicrustacea constitutes the largest superclass of crustaceans, containing approximately four-fifths of all described crustacean species, including crabs, lobsters, crayfish, shrimp, krill, prawns, woodlice, barnacles, copepods, amphipods, mantis shrimp and others. The largest branch of multicrustacea is the class Malacostraca.
An anchialine system is a landlocked body of water with a subterranean connection to the ocean. Depending on its formation, these systems can exist in one of two primary forms: pools or caves. The primary differentiating characteristics between pools and caves is the availability of light; cave systems are generally aphotic while pools are euphotic. The difference in light availability has a large influence on the biology of a given system. Anchialine systems are a feature of coastal aquifers which are density stratified, with water near the surface being fresh or brackish, and saline water intruding from the coast at depth. Depending on the site, it is sometimes possible to access the deeper saline water directly in the anchialine pool, or sometimes it may be accessible by cave diving.
| Authority control databases: National |
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