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The nourished cod worm then mates with another one on the lumpsucker. [ 1 ] [ 2 ] The female worm, with her now-fertilized eggs, then finds a cod, or a cod-like fish, such as a haddock or whiting . There, the worm clings to the gills while it metamorphoses into a plump, sinusoidal, worm-like body, with a coiled mass of egg strings at the rear.
With her fertilised eggs, she looks for a cod or a fish belonging to the same family as cod, such as a haddock or whiting. [4] When a suitable definite host is located, females enter the gill chamber. There, while attached to a gill, the female develops a plump, sinusoidal, worm-like body, with a coiled mass of egg strings at the posterior end. [4]
The Atlantic cod (pl.: cod; Gadus morhua) is a fish of the family Gadidae, widely consumed by humans. It is also commercially known as cod or codling. [3] [n 1]In the western Atlantic Ocean, cod has a distribution north of Cape Hatteras, North Carolina, and around both coasts of Greenland and the Labrador Sea; in the eastern Atlantic, it is found from the Bay of Biscay north to the Arctic ...
Cod (pl.: cod) is the common name for the demersal fish genus Gadus, belonging to the family Gadidae. [1] Cod is also used as part of the common name for a number of other fish species, and one species that belongs to genus Gadus is commonly not called cod ( Alaska pollock , Gadus chalcogrammus ).
Cod feed on mollusks, crabs, starfish, worms, squid, and small fish. Some migrate south in winter to spawn. A large female lays up to five million eggs in mid-ocean, a very small number of which survive. Cod has been an important economic commodity in international markets since the Viking period (around A.D. 800).
The nauplii will go through three stages before molting into copepodids, which associate with fish gills. [2] After a further five stages and mating, the male leaves the host and dies, while the female transitions into the anchored stage (may move to different fish host). [2] An anchor worm Lernaea sp. parasite on a Murray cod
Zangroniz said studies only use a few species of fish and don't represent the more than 30,000 fish species that exist. She added pain is measured in mammals on the grimace scale, often seen in ...
Some internal fish parasites are spectacular, such as the philometrid nematode Philometra fasciati which is parasitic in the ovary of female Blacktip grouper; [14] the adult female parasite is a red worm which can reach up to 40 centimetres in length, for a diameter of only 1.6 millimetre; the males are tiny.