Psychroteuthis glacialis

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Glacial squid
Psychroteuthis glacialis paralarva.jpg
Psychroteuthis glacialis paralarva (<2 cm ML) from the Ross Sea of Antarctica
Psychroteuthis glacialis paralarva2.jpg
Another view of the same specimen
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Oegopsida
Family: Psychroteuthidae
Thiele, 1920
Genus: Psychroteuthis
Thiele, 1920
Species:
P. glacialis
Binomial name
Psychroteuthis glacialis
Thiele, 1920 [2]

Psychroteuthis glacialis, the glacial squid, is the only known species in the monotypic genus Psychroteuthis, in the family Psychroteuthidae. While only one species has been confirmed, two undescribed species also probably exist.[ citation needed ] The species occurs in coastal waters near Antarctica and South America. It grows to a mantle length of 44 cm (1.44 ft). [3]

Contents

Ecology

P. glacialis is known to feed on many crustaceans, fish, lanternfish, Antarctic krill, and Antarctic silverfish, and has been known to practice cannibalism. [4] Animals known to routinely feed on glacial squid include the Antarctic petrel, light-mantled albatross, Ross seal, southern elephant seal, Weddell seal, Patagonian toothfish, wandering albatross, grey-headed albatross, the Adélie penguin, and the emperor penguin. [5]

Distribution

The squid inhabits the pelagic zone in subtropical regions. It is found in depths of 300–1,000 m (980–3,280 ft). [6]

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<span class="mw-page-title-main">Colossal squid</span> Species of squid

The colossal squid is the world’s largest squid species and the world’s largest mollusc. It belongs to the Cranchiidae family, that of the cockatoo squids or glass squids. It is sometimes called the Antarctic cranch squid or giant squid and is believed to be the largest squid species in terms of mass. It is the only recognized member of the genus Mesonychoteuthis and is known from only a small number of specimens. The species is confirmed to reach a mass of at least 495 kilograms (1,091 lb), though the largest specimens—known only from beaks found in sperm whale stomachs—may perhaps weigh as much as 600–700 kilograms (1,300–1,500 lb), making it the largest known invertebrate. Maximum total length has been estimated between 10 metres (33 ft) and 14 metres (46 ft) but the former estimate is more likely. The colossal squid has the largest eyes of any known creature ever to exist, with an estimated diameter of 27–30 cm (11–12 in) to 40 cm (16 in) for the largest collected specimen.

<i>Nototodarus sloanii</i> Species of mollusc

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<i>Martialia hyadesii</i> Species of squid

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<i>Galiteuthis glacialis</i> Species of squid

Galiteuthis glacialis is a species of glass squid from the Antarctic Convergence. It is in the family Cranchiidae and subfamily Taoniinae. They are endemic to the Antarctic and are found in the Southern Ocean, around the Weddell Sea and the South Shetland Islands. Galiteuthis glacialis are one of the most plentiful and widely dispersed species of Antarctic squid. These squids are found in the mesopelagic and bathypelagic layers of the open ocean and demonstrate vertical migration. They can reach a maximum mantle length of 500 mm (0.5m).

<i>Gonatus antarcticus</i> Species of squid

Gonatus antarcticus is a squid in the family Gonatidae. The species is known with certainty only from southern Atlantic waters but it may have a circum-Antarctic distribution.

<span class="mw-page-title-main">Antarctic flying squid</span> Species of squid

The Antarctic flying squid is a species of squid from the subfamily Todarodinae of the family Ommastrephidae, a family of pelagic squid from the order Oegopsida. It has a circumglobal distribution in the seas around the lower latitudes of the Southern Ocean.

References

  1. Barratt, I. & Allcock, L. (2014). "Psychroteuthis glacialis". The IUCN Red List of Threatened Species . 2014: e.T163026A964719. doi: 10.2305/IUCN.UK.2014-1.RLTS.T163026A964719.en . Downloaded on 17 March 2018.
  2. Julian Finn (2016). Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O (eds.). "Psychroteuthis glacialis Thiele, 1920". MolluscaBase. World Register of Marine Species . Retrieved 17 March 2018.
  3. Roper C.F.E., M.J. Sweeney & C.E. Nauen 1984. Cephalopods of the world. Food and Agriculture Organization, Rome, Italy.
  4. CephBase: Prey/Diet of Psychroteuthis glacialis Archived 2004-11-20 at the Wayback Machine
  5. CephBase: Predators of Psychroteuthis glacialis Archived 2004-11-20 at the Wayback Machine
  6. "Psychroteuthis glacialis, Glacial squid". sealifebase.ca. Retrieved 2022-03-04.