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Psychroteuthis glacialis : ウィキペディア英語版 | Psychroteuthis glacialis
''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. The species occurs in coastal waters near Antarctica and South America. It grows to a mantle length of 44 cm.〔Roper C.F.E., M.J. Sweeney & C.E. Nauen 1984. ''Cephalopods of the world''. Food and Agriculture Organization, Rome, Italy.〕 ==Ecology== ''P. glacialis'' is known to feed on many crustaceans, fish, lanternfish, Antarctic krill, and Antarctic silverfish, and has been known to practice cannibalism.〔(CephBase: Prey/Diet of ''Psychroteuthis glacialis'' )〕 Animals known to routinely feed on glacial squid include the Antarctic petrel, light-mantled sooty albatross, Ross seal, southern elephant seal, Weddell seal, Patagonian toothfish, wandering albatross, grey-headed albatross, and the emperor penguin.〔(CephBase: Predators of ''Psychroteuthis glacialis'' )〕
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