The Cyclopoida are an order of small

crustacean Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group ...

s from the subclass

Copepod Copepods (; meaning "oar-feet") are a group of small crustaceans found in nearly every freshwater and saltwater habitat (ecology), habitat. Some species are planktonic (inhabiting sea waters), some are benthos, benthic (living on the ocean floor) ...

a. Like many other copepods, members of Cyclopoida are small,

plankton Plankton are the diverse collection of organisms found in Hydrosphere, water (or atmosphere, air) that are unable to propel themselves against a Ocean current, current (or wind). The individual organisms constituting plankton are called plankt ...

animal Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motilit ...

s living both in the sea and in freshwater habitats. They are capable of rapid movement. Their larval development is metamorphic, and the

embryo An embryo is an initial stage of development of a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male spe ...

s are carried in paired or single sacs attached to first abdominal

somite The somites (outdated term: primitive segments) are a set of bilaterally paired blocks of paraxial mesoderm that form in the embryonic stage of somitogenesis, along the head-to-tail axis in segmented animals. In vertebrates, somites subdivide in ...

Distinguishing features

Cyclopoids are distinguished from other copepods by having first antennae shorter than the length of the head and thorax, and uniramous second antennae. The main joint lies between the fourth and fifth segments of the body.

Taxonomy

Cyclopoida contains 30

families Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Ideal ...

: *

Archinotodelphyidae Archinotodelphyidae is a family of copepods belonging to the order Cyclopoida The Cyclopoida are an order of small crustaceans from the subclass Copepoda. Like many other copepods, members of Cyclopoida are small, planktonic animals living bot ...

Lang, 1949 * Ascidicolidae Thorell, 1859 * Botryllophilidae Sars G.O., 1921 * Buproridae Thorell, 1859 *

Chitonophilidae The Chitonophilidae are a family of parasitic copepod Copepods (; meaning "oar-feet") are a group of small crustaceans found in nearly every freshwater and saltwater habitat. Some species are planktonic (inhabiting sea waters), some are bent ...

Avdeev & Sirenko, 1991 *

Chordeumiidae Chordeumiidae is a family of crustaceans belonging to the order Cyclopoida 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 i ...

Boxshall, 1988 *

Corallovexiidae The Corallovexiidae are a family of strictly marine parasitic copepods associated with corals and, together with members of the family Asterocheridae, dominate their ecological niche in the West Indies; in the Indo-Pacific, they are replaced by t ...

Stock, 1975 *

Cucumaricolidae ''Cucumaricola'' is a genus of crustaceans Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, ...

Bouligand & Delamare-Deboutteville, 1959 * Cyclopettidae Martínez Arbizu, 2000 * Cyclopicinidae Khodami, Vaun MacArthur, Blanco-Bercial & Martinez Arbizu, 2017 *

Cyclopidae The Cyclopidae are a family of copepods containing more than half of the 1,200 species in the order Cyclopoida in over 70 genera. Genera These genera are accepted as valid: *'' Abdiacyclops'' Karanovic, 2005 *'' Acanthocyclops'' Kiefer, 1927 ...

Rafinesque, 1815 *

Cyclopinidae Cyclopinidae is a family of copepods belonging to the order Cyclopoida 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 th ...

Sars G.O., 1913 * Enterognathidae Illg & Dudley, 1980 *

Enteropsidae Enteropsidae is a family of copepods belonging to the order Cyclopoida 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 th ...

Thorell, 1859 *

Fratiidae ''Fratia'' is a monotypic genus of crustaceans Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepod ...

Ho, Conradi & López-González, 1998 * Giselinidae Martínez Arbizu, 2000 * Hemicyclopinidae Martínez Arbizu, 2001 *

Lernaeidae Lernaeidae is a family of copepods belonging to the order Cyclopoida. Genera Genera: * ''Afrolernaea'' Fryer, 1956 * ''Amazolernaea'' Thatcher & Williams, 1998 * ''Areotrachelus'' Wilson, 1924 * ''Bedsylernaea'' Thatcher & Williams, 1998 * ''C ...

Cobbold, 1879 *

Mantridae Mantridae is a family of crustaceans belonging to the order Cyclopoida. Genera: * '' Chamicola'' Ohtsuka, Boxshall & Torigoe, 2000 * ''Mantra A mantra ( Pali: ''manta'') or mantram (मन्त्रम्) is a sacred utterance, a n ...

Leigh-Sharpe, 1934 * Micrallectidae Huys, 2001 * Notodelphyidae Dana, 1853 * Oithonidae Dana, 1853 * Ozmanidae Ho & Thatcher, 1989 * Paralubbockiidae Boxshall & Huys, 1989 * Psammocyclopinidae Martínez Arbizu, 2001 * Pterinopsyllidae Sars G.O., 1913 * Schminkepinellidae Martínez Arbizu, 2006 * Smirnovipinidae Khodami, Vaun MacArthur, Blanco-Bercial & Martinez Arbizu, 2017 * Speleoithonidae Rocha & Iliffe, 1991 * Thaumatopsyllidae Sars G.O., 1913 * Cyclopoida ''

incertae sedis ' () or ''problematica'' is a term used for a taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred to as "enigmatic taxa". In the system of open nomenclature, uncertain ...

'' – 8 genera Several more families are included in Suborder

Poecilostomatoida Poecilostomatoida are an suborder of copepods. Although it was previously considered a separate order, recent research showed it to be nested within the Cyclopoida Description The classification of these copepods has been established on the ba ...

, a temporary name for the "poecilostome lineage" The Poecilostomatoida were previously treated as a separate order, but molecular phylogenies show that this lineage is nested within the Cyclopoida.

References

External links

Cyclopoida fact sheet - Guide to the marine zooplankton of south eastern Australia

Cyclopoida pictures

{{Taxonbar, from=Q899782 Crustacean orders