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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. [3] [4] [5] The parasites cause severe visual impairment, but it is thought that the sharks do not rely on keen eyesight for their survival. [4]
The Greenland shark is a thickset species, with a short, rounded snout, small eyes, and very small dorsal and pectoral fins. The gill openings are very small for the species' great size. Coloration can range from pale creamy-gray to blackish-brown and the body is typically uniform in color, though whitish spots or faint dark streaks are ...
11 lip 2019 · Brain images of a representative specimen of the (A,C) Greenland shark (Somniosus microcephalus) and the (B,D) Pacific sleeper shark (S. pacificus ) in ( A , B ) dorsal and ( C , D ) lateral...
The eyes from six Greenland sharks, Somniosus microcephalus (Bloch & Schneider), infected with the parasitic copepod Ommatokoita elongata (Grant) were collected in the Arctic waters of Victor Bay, North-west Territories, Canada, for study.
7 sty 2022 · Ommatokoita elongata attach themselves to the eyes of Greenland sharks and can grow up to 1 inch (2.5 centimetres) long, according to the Encyclopedia of Life. The eye parasite tends to...
Ommatokoita elongata is a 30 mm long pinkish-white parasitic copepod, frequently found permanently attached to the corneas of the Greenland shark and Pacific sleeper shark. The parasites cause severe visual impairment, but it is thought that the sharks do not rely on keen eyesight for their survival.
28 gru 2023 · A common parasite of the Greenland shark is Ommatokoita elongata. This copepod attaches itself to the eyes of the shark causing corneal lesions which lead to impaired vision and even partial blindness.
