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Antarctic krill (Euphausia superba) is a species of krill found in the Antarctic waters of the Southern Ocean. It is a small, swimming crustacean that lives in large schools, called swarms , sometimes reaching densities of 10,000–30,000 animals per cubic metre. [ 3 ]
The present estimate for the biomass of Antarctic krill (Euphausia superba) is 379 million tonnes. [1] The total global harvest of krill from all fisheries amounts to 150–200,000 tonnes annually, mainly Antarctic krill and North Pacific krill (E. pacifica). Krill are rich in protein (40% or more of dry weight) and lipids (about 20% in E ...
The Antarctic krill is an important species in the context of biogeochemical cycling [74] [42] and in the Antarctic food web. [ 75 ] [ 76 ] It plays a prominent role in the Southern Ocean because of its ability to cycle nutrients and to feed penguins and baleen and blue whales .
Euphausia crystallorophias is a species of krill, sometimes called ice krill, [1] crystal krill, [2] or Antarctic coastal krill. [2] It lives in the coastal waters around Antarctica , further south than any other species of krill. [ 2 ]
Krill oil capsules. Krill oil is an extract prepared from a species of Antarctic krill, Euphausia superba.Processed krill oil is commonly sold as a dietary supplement.Two components of krill oil are omega-3 fatty acids similar to those in fish oil, and phospholipid-derived fatty acids (PLFA), mainly phosphatidylcholine (alternatively referred to as marine lecithin). [1]
Euphausia is the largest genus of krill, and is placed in the family Euphausiidae.There are 31 species known in this genus, including Antarctic krill (Euphausia superba) and ice krill (Euphausia crystallorophias) from the Southern Ocean, and North Pacific krill (Euphausia pacifica) in the Pacific Ocean.
Antarctic krill, which congregates in large schools, is the keystone species of the ecosystem of the Southern Ocean, being an important food organism for whales, seals, leopard seals, fur seals, squid, icefish, and many bird species, such as penguins and albatrosses. [115]
Thysanoessa is a genus of the krill [1] that play critical roles in the marine food web. They're abundant in Arctic and Antarctic areas, feeding on zooplankton and detritus to obtain energy. [2] Thysanoessa are responsible for the transportation of carbon and nutrients from surface waters to deeper trophic levels.