Ommatokoita

Ommatokoita elongata
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Crustacea
Class:	Hexanauplia
Subclass:	Copepoda
Order:	Siphonostomatoida
Family:	Lernaeopodidae
Genus:	Ommatokoita; Leigh-Sharpe, 1926
Species:	O. elongata
Binomial name
	Ommatokoita elongata; (Grant, 1827)
Synonyms
	Ommatokoita superba Leigh-Sharpe, 1926

Ommatokoita elongata is a 30 mm (1.2 in) long pinkish-white parasitic copepod, frequently found permanently attached to the corneas of the Greenland shark and Pacific sleeper shark.[1][2][3] The parasites cause severe visual impairment, but it is thought that the sharks do not rely on keen eyesight for their survival.[2] It was speculated that the copepod may be bioluminescent and thus form a mutualistic relationship with the shark by attracting prey, but this hypothesis has not been verified.[4] It is the only species in the genus Ommatokoita.[5]

References

Borucinska, J. D.; Benz, G. W.; Whiteley, H. E. (1998). "Ocular lesions associated with attachment of the parasitic copepod Ommatokoita elongata (Grant) to corneas of Greenland sharks, Somniosus microcephalus (Bloch & Schneider)". Journal of Fish Diseases. 21 (6): 415–22. doi:10.1046/j.1365-2761.1998.00122.x.
Benz, George W.; Borucinska, Joanna D.; Lowry, Lloyd F.; Whiteley, Herbert E. (2002). "Ocular lesions associated with attachment of the copepod Ommatokoita elongata (Lernaeopodidae: Siphonostomatoida) to corneas of Pacific sleeper sharks Somniosus pacificus captured off Alaska in Prince William Sound". The Journal of Parasitology. 88 (3): 474–81. doi:10.1645/0022-3395(2002)088[0474:OLAWAO]2.0.CO;2. PMID 12099414.
Martin, R. Aidan (October 4, 1998). "Greenland sharks and parasites".
Berland, Bjørn (1961). "Copepod Ommatokoita elongata (Grant) in the Eyes of the Greenland Shark—a Possible Cause of Mutual Dependence". Nature. 191 (4790): 829–30. Bibcode:1961Natur.191..829B. doi:10.1038/191829a0.
Geoff Boxshall (2009). T. Chad Walter; Geoff Boxshall (eds.). "Ommatokoita Leigh-Sharpe, 1926". World Copepoda database. World Register of Marine Species. Retrieved March 8, 2010.

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[1] Borucinska, J. D.; Benz, G. W.; Whiteley, H. E. (1998). "Ocular lesions associated with attachment of the parasitic copepod Ommatokoita elongata (Grant) to corneas of Greenland sharks, Somniosus microcephalus (Bloch & Schneider)". Journal of Fish Diseases. 21 (6): 415–22. doi:10.1046/j.1365-2761.1998.00122.x.

[pmid12099414-2] Benz, George W.; Borucinska, Joanna D.; Lowry, Lloyd F.; Whiteley, Herbert E. (2002). "Ocular lesions associated with attachment of the copepod Ommatokoita elongata (Lernaeopodidae: Siphonostomatoida) to corneas of Pacific sleeper sharks Somniosus pacificus captured off Alaska in Prince William Sound". The Journal of Parasitology. 88 (3): 474–81. doi:10.1645/0022-3395(2002)088[0474:OLAWAO]2.0.CO;2. PMID 12099414.

[3] Martin, R. Aidan (October 4, 1998). "Greenland sharks and parasites".

[4] Berland, Bjørn (1961). "Copepod Ommatokoita elongata (Grant) in the Eyes of the Greenland Shark—a Possible Cause of Mutual Dependence". Nature. 191 (4790): 829–30. Bibcode:1961Natur.191..829B. doi:10.1038/191829a0.

[5] Geoff Boxshall (2009). T. Chad Walter; Geoff Boxshall (eds.). "Ommatokoita Leigh-Sharpe, 1926". World Copepoda database. World Register of Marine Species. Retrieved March 8, 2010.