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Ommatokoita elongata is a 30 mm (1.2 in) long pinkish-white parasitic copepod, frequently found permanently attached to the corneas of the Greenland shark and Pacific sleeper shark. [ 3 ] [ 4 ] [ 5 ] The parasites cause severe visual impairment , but it is thought that the sharks do not rely on keen eyesight for their survival. [ 4 ]
For neurobiology, one study looked at the central nervous system of this copepod to get an idea of the organization of the central nervous system of the ancestors to the crustaceans and insects to complement the neurobiological work that has been done in a group of distantly related copepods (the calanoid copepods).
This copepod spawns between October and March (winter), using lipid-reserves to fuel reproduction (making it a capital breeder [4]). [5] The male is most abundant during the breeding season, found between 500 and 1,000 metres (1,600 and 3,300 ft) in depth at this time. [ 6 ]
Many benthic copepods eat organic detritus or the bacteria that grow in it, and their mouth parts are adapted for scraping and biting. Herbivorous copepods, particularly those in rich, cold seas, store up energy from their food as oil droplets while they feed in the spring and summer on plankton blooms. These droplets may take up over half of ...
A planktivore is an aquatic organism that feeds on planktonic food, including zooplankton and phytoplankton. [1] [2] Planktivorous organisms encompass a range of some of the planet's smallest to largest multicellular animals in both the present day and in the past billion years; basking sharks and copepods are just two examples of giant and microscopic organisms that feed upon plankton.
Calanoid copepods are the dominant animals in the plankton in many parts of the world's oceans, making up 55–95% of plankton samples. [2] They are therefore important in many food webs, taking in energy from phytoplankton and algae and 'repackaging' it for consumption by higher trophic level predators. [2]
Tigriopus brevicornis is a coastal marine copepod. [1] They are a dominant member of shallow supra tidal rock pools along the North Western European coastline. A broad range of studies have been carried out on this species, including: its ecology, physiology, phylogeography, metapopulation genetics, development and reproductive behaviour.
Acartia tonsa is a species of calanoid copepod that can be found in a large portion of the world's estuaries and areas of upwelling where food concentrations are high. [2] [3] Like many plankton common to estuarine ecosystems, they can live in a wide range of temperatures and salinities. [2]