Euphausiacea

Also known as krill

Krill (Euphausiids) (: krill) are small and exclusively marine crustaceans of the order Euphausiacea, found in all of the world's oceans. The name "krill" comes from the Norwegian word '''', meaning "small fry of fish", which is also often attributed to species of fish.

AI overview

Krill are tiny ocean animals belonging to a group of crustaceans called Euphausiacea, and they live in every ocean around the world. The name "krill" comes from a Norwegian word meaning "small fry of fish," reflecting their small size and their importance as food in marine ecosystems.

AI-generated from the Wikipedia summary — may contain errors.

Species

euphausiaceans

Euphausiacea

ORDER

KingdomAnimalia
PhylumArthropoda
ClassMalacostraca
OrderEuphausiacea

Habitatmarine

Observations recorded498,899

磷蝦是一種类似蝦的海洋無脊椎動物，生物學上屬於磷蝦目（Euphausiacea）。磷虾這種小型的甲殼亞門浮游動物是鬚鯨、蝠鱝、鯨鯊、鋸齒海豹及海豹的食物，也是一些海鳥的主要食物。是接近食物鏈最底部的關鍵物種（keystone species），不過仍不算最底部，因為牠們會進食浮游植物（phytoplankton）和一些比牠們更小的浮游動物（zooplankton）。在南冰洋的南極磷蝦可製造逾5亿公噸的生物質能，約為人類的兩倍，每年有逾一半的南極磷蝦被鯨、海豹、企鵝、魷魚和魚吃掉，而没被吃掉的那些则會再繼續繁殖下一代，以维持种群总数。大部分的磷蝦物種每天會在海面和海底之间垂直遷徙一段很長的路線，因此它们的獵食者也會跟着在夜間上海面，日間則潛至海底。商業性磷蝦捕獲集中在南冰洋與日本周邊海域，全球捕獲量每年約15-20万公噸，其中大部分來自南冰洋的斯科舍海。磷蝦可作水產養殖和水族箱的飼料。是日本與俄羅斯人的食品，在日本又稱沖醬蝦（オキアミ）。

via GBIF

Research

827 papers

Antarctic marine life under pressure.Science (New York, N.Y.) · 2022Meyer B, Kawaguchi SDOI: 10.1126/science.adf3606
Euphausiacea diversity in a trans-oceanic transect through the South Atlantic Ocean: the first Atlantic record of Thysanopoda astylata Brinton, 1975.Anais da Academia Brasileira de Ciencias · 2019Muxagata E, Barbosa CN, Agostini VODOI: 10.1590/0001-3765201920180034
The eyestalk photophore of Northern krill Meganyctiphanes norvegica (M. Sars) (Euphausiacea) re-investigated: Innervation by specialized ommatidia of the compound eye.Arthropod structure & development · 2024Krieger J, Fregin T, Harzsch SDOI: 10.1016/j.asd.2024.101393
Preface.Advances in marine biology · 2010Tarling GADOI: 10.1016/B978-0-12-381308-4.00018-2
Krill oil. Monograph.ReviewAlternative medicine review : a journal of clinical therapeutic · 2010
The complete mitochondrial genome sequence of Euphausia pacifica (Malacostraca: Euphausiacea) reveals a novel gene order and unusual tandem repeats.Genome · 2011Shen X, Wang H, Wang M et al.DOI: 10.1139/g11-053
Naupliar and Metanaupliar Development of Thysanoessa raschii (Malacostraca, Euphausiacea) from Godthåbsfjord, Greenland, with a Reinstatement of the Ancestral Status of the Free-Living Nauplius in Malacostracan Evolution.PloS one · 2015Akther H, Agersted MD, Olesen JDOI: 10.1371/journal.pone.0141955
Limb articulation in caridoid crustaceans revisited - new evidence from Euphausiacea (Malacostraca).Arthropod structure & development · 2008Haupt C, Richter SDOI: 10.1016/j.asd.2007.09.005

via PubMed

Wikidata facts

Image: Meganyctiphanes norvegica1.jpg

Show 4 more facts

taxon name: Euphausiacea
Commons category: Euphausiacea
Commons gallery: Krill
taxon common name: krill

Sources (2)

via Wikidata · CC0

~29 min read

Article

24 sections

Contents

Taxonomy
Phylogeny
Timeline
Distribution
Anatomy and morphology
Ecology
Feeding
Predation
Plastics
Life history and behavior
Reproduction
Moulting
Lifespan
Swarming
Vertical migration
Biogeochemical cycles
Human uses
Harvesting history
Human consumption
Bio-inspired robotics
See also
References
Further reading
External links

Krill (Euphausiids) (: krill) are small and exclusively marine crustaceans of the order Euphausiacea, found in all of the world's oceans. The name "krill" comes from the Norwegian word '', meaning "small fry of fish", which is also often attributed to species of fish.

Krill are considered an important trophic level connection near the bottom of the food chain. They feed on phytoplankton and, to a lesser extent, zooplankton, and are also the main source of food for many larger animals. In the Southern Ocean, one species, the Antarctic krill, makes up an estimated biomass of around 379 million tonnes (418 million tons), making it among the species with the largest total biomass. Over half of this biomass is eaten by whales, seals, penguins, seabirds, squid, and fish each year. Most krill species display large daily vertical migrations, providing food for predators near the surface at night and in deeper waters during the day.