Oncaea | |
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Male Oncaea venusta | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Subphylum: | Crustacea |
Class: | Copepoda |
Order: | Cyclopoida |
Family: | Oncaeidae |
Genus: | Oncaea Philippi, 1843 |
Synonyms [1] | |
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Oncaea is a genus of copepods. The genus contains bioluminescent species. [2] Unlike other bioluminescent copepods, Oncaea have an internal (non-secreted) bioluminescence. [3] Oncaea contains the following species: [1]
A number of nomina dubia and species inquirendae have also been described in Oncaea: [1]
Bioluminescence is the production and emission of light by living organisms. It is a form of chemiluminescence. Bioluminescence occurs widely in marine vertebrates and invertebrates, as well as in some fungi, microorganisms including some bioluminescent bacteria, and terrestrial arthropods such as fireflies. In some animals, the light is bacteriogenic, produced by symbiotic bacteria such as those from the genus Vibrio; in others, it is autogenic, produced by the animals themselves.
Siphonostomatoida is an order of copepods, containing around 75% of all the copepods that parasitise fishes. Their success has been linked to their possession of siphon-like mandibles and of a "frontal filament" to aid attachment to their hosts. Most are marine, but a few live in fresh water. There are 40 recognised families:
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.
Coelenterazine is a luciferin, a molecule that emits light after reaction with oxygen, found in many aquatic organisms across eight phyla. It is the substrate of many luciferases such as Renilla reniformis luciferase (Rluc), Gaussia luciferase (Gluc), and photoproteins, including aequorin, and obelin. All these proteins catalyze the oxidation of this substance, a reaction catalogued EC 1.13.12.5.
Oncaeidae is a family of copepods, containing the following genera:
Oncaea venusta is a species of copepod with a cosmopolitan distribution, but lacking from the Arctic Ocean. Females are 1.1–1.3 mm (0.043–0.051 in) long, while males are only 0.8–1.0 mm (0.031–0.039 in) long. The front of the head is unusually wide, and the body is brightly coloured, usually yellow–orange, but sometimes red. O. venusta feeds on a variety of zooplankton and phytoplankton.
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.
Calocalanus is a genus of copepods, the only genus in the family Calocalanidae:
Wilhelm Giesbrecht (1854–1913) was a Prussian zoologist, specialising in copepods, during the "golden age of copepodology".
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.
Copilia is a genus of copepods in the family Sapphirinidae. The eyes in members of this genus have two lenses, arranged like those in a telescope.
Gaussia is a genus of copepods. The genus contains bioluminescent species. It is a "characteristic genus of the mesopelagial", occurring at depths of 0–3,000 metres (0–9,843 ft). The genus Gaussia contains the following species:
Euaugaptilus is a genus of copepods. The genus contains bioluminescent species.
Neocalanus is a genus of marine copepods. They are a dominant component of the open water ecosystems of the northern Pacific Ocean. Neocalanus are large copepods, reaching body lengths of more than 8 mm (0.31 in) in Neocalanus plumchrus.
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.
Oithona is a planktonic crustacean genus found in marine, brackish, fresh water environments. Oithona has been described as the most ubiquitous and abundant copepod in the world's oceans. It was first described by Baird in 1843 using the species Oithona plumifera as taxon type.
Eurytemora is a genus of copepods in the family Temoridae. The World Register of Marine Species lists the following species:
Aetideidae is a family of copepods belonging to the order Calanoida.
Arietellidae is a family of copepods belonging to the order Calanoida.