Histioteuthis is a genus of squid in the family Histioteuthidae. It goes by the common name cock-eyed squid, because in all species the right eye is normal-sized, round, blue and sunken; whereas the left eye is at least twice the diameter of the right eye, tubular, yellow-green, faces upward, and bulges out of the head.
| Histioteuthis | |
|---|---|
| |
| A member of the genus Histioteuthis. Eye asymmetry is observable. | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Oegopsida |
| Family: | Histioteuthidae |
| Genus: | Histioteuthis Orbigny, 1841[1] |
| Type species | |
| Cranchia bonnellii Férussac, 1834
| |
| Species | |
|
17 species and subspecies, see text | |
| Synonyms[1] | |
In 2017, researchers at Duke University established that Histioteuthis uses its larger eye to see ambient sunlight, and its smaller eye to detect bioluminescence from prey animals.[2]
The name is composed of the Greek histion (ἱστίον, "sail", a large webbed membrane between six of the arms, in some species) and teuthis ("squid").[3][4]
The genus contains bioluminescent species.[5]
Species
edit- H. bonnellii species-group
- Histioteuthis bonnellii, umbrella squid
- Histioteuthis machrohista
- H. reversa species-group
- Histioteuthis eltaninae
- Histioteuthis atlantica
- Histioteuthis reversa, reverse jewel squid
- H. celetaria species-group
- H. corona species-group
- H. miranda species-group
- H. meleagroteuthis species-group
- Histioteuthis heteropsis, strawberry squid
- Histioteuthis meleagroteuthis
References
edit- ^ a b Julian Finn (2016). "Histioteuthis d'Orbigny [in Férussac & d'Orbigny], 1841". World Register of Marine Species. Flanders Marine Institute. Retrieved 6 March 2018.
- ^ Mismatched Eyes Help Squid Survive Ocean’s Twilight Zone, at Duke University; by Kara Manke; published February 13, 2017; retrieved June 25, 2017
- ^ Catlow, Agnes (1854). Popular Conchology. Longman. p. 364.
Histioteuthis, sail, and cuttlefish
- ^ Chun, Carl (1975). The Cephalopoda. Israel Program for Scientific Translations. p. 120. ISBN 978-0-7065-1259-5.
Histioteuthis is characterized by such a large membrane ("sail") [...] This "sail" is a strong, muscular cutaneous membrane which surrounds the 1st, 2nd and 3rd arms
- ^ Herring, Peter J. (1987). "Systematic distribution of bioluminescence in living organisms". Journal of Bioluminescence and Chemiluminescence. 1 (3): 147–163. doi:10.1002/bio.1170010303. PMID 3503524.
External links
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