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.
Calanus is a genus of marine copepod in the family Calanidae. The genus was split in 1974, with some species being placed in a new genus, Neocalanus. The following species are recognised:
Cyclops is one of the most common genera of freshwater copepods, comprising over 400 species. Together with other similar-sized non-copepod fresh-water crustaceans, especially cladocera, they are commonly called water fleas. The name Cyclops comes from the Cyclops of Greek mythology, as they have a single large eye; in Cyclops, the eye may be either red or black.
Diaptomus is a genus of copepods with a single eye spot. It is superficially similar in size and appearance to Cyclops. However it has characteristically very long first antennae that exceed the body length. In addition, the females carry the eggs in a single sac rather than the twin sacs seen in Cyclops. It is a copepod of larger freshwater ponds, lakes and still waters.
Canthocamptus is a genus of copepods that live in water from the Arctic Ocean to the Atlantic Ocean. There are over 200 different species of Canthocamptus. A number of Australian endemic species are listed as vulnerable species on the IUCN Red List, and one Brazilian species is conservation dependent.
Epischura is a genus of copepods in the family Temoridae, containing the following species:
Eudiaptomus is a genus of freshwater crustaceans in the family Diaptomidae. It contains the following species:
Hesperodiaptomus is a genus of copepods in the family Diaptomidae, containing 18 species. Two species – H. augustaensis and H. californiensis – are endemic to the United States and listed as vulnerable species on the IUCN Red List.
Mesocyclops is a genus of copepod crustaceans in the family Cyclopidae. Because the various species of Mesocyclops are known to prey on mosquito larvae, it is used as a nontoxic and inexpensive form of biological mosquito control.
Neutrodiaptomus is a genus of copepods in the family Diaptomidae. The Japanese endemic species N. formosus is listed as Data Deficient on the IUCN Red List. The genus Neutrodiaptomus contains the following species:
Sapphirina, whose members are commonly known as sea sapphires, is a genus of parasitic copepods in the family Sapphirinidae.
Acartia is a genus of marine calanoid copepods. They are epipelagic, estuarine, zooplanktonic found throughout the oceans of the world, primarily in temperate regions.
Megacyclops is a genus of copepods, containing the following species:
Pontella is a marine copepod genus in the family Pontellidae. It is an organism that bears three lenses in the eye. The outer has a parabolic surface, countering the effects of spherical aberration while allowing a sharp image to be formed.
Temoridae is a family of copepods, containing the following genera:
Centropages is a genus of copepods in the family Centropagidae with 34 known marine species.
Temora turbinata is a copepod in the Temoridae family. It is an epipelagic species, having been recorded in coastal waters around the world. It was first described in 1849 by American scientist James Dwight Dana.
Temora discaudata is a copepod in the family Temoridae. It was first described in 1849 by James Dwight Dana, being placed in the Calanus genus. It was described as a member of the Temora genus in 1889 by Prussian zoologist Wilhelm Giesbrecht. The female measures between 1.68 mm to 2.05 mm in length, while the male ranges between 1.65 and 1.85 mm. It is found in the Pacific, Indian, and (marginally) Atlantic Oceans.
Eurytemora is a genus of copepods in the family Temoridae. The World Register of Marine Species lists the following species:
Heterocope is a genus of copepods in the family Temoridae. It was described by Norwegian biologist Georg Ossian Sars in 1863. The World Register of Marine Species lists the following currently accepted species:
