List of diseases and parasites in cod

Technopedia Center

Faculty of Engineering and Computer Science
S1 Informatics S1 Information Systems S1 Information Technology S1 Computer Engineering S1 Electrical Engineering S1 Civil Engineering

faculty of Economics and Business
S1 Management S1 Accountancy

Faculty of Letters and Educational Sciences
S1 English literature S1 English language education S1 Mathematics education S1 Sports Education

List of diseases and parasites in cod - Wikipedia

From Wikipedia, the free encyclopedia

(Redirected from Diseases and parasites in cod)

Cod and related species in the family Gadidae are susceptible to a variety of diseases and parasites.

Laenaeocera branchialis

Lernaeocera branchialis, the "cod worm", is a copepod that infects gadoids. The first host used by cod worm is a flatfish or lumpsucker, which it captures with grasping hooks at the front of its body. It penetrates the lumpsucker with a thin filament, which it uses to suck the host's blood. 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. The front part of the worm's body penetrates the body of the cod until it enters the rear bulb of the host's heart. There, firmly rooted in the cod's circulatory system, the front part of the parasite develops like the branches of a tree, reaching into the main artery. In this way, the worm extracts nutrients from the cod's blood, remaining safely tucked beneath the cod's gill cover until it releases a new generation of offspring into the water.^[1]^[2]

Parasites of Atlantic cod

Atlantic cod act as intermediate, paratenic, or definitive hosts to a large number of parasite species; 107 taxa are listed by Hemmingsen and MacKenzie (2001)^[3] with seven new records by Perdiguero-Alonso et al. (2008).^[3] The predominant groups of cod parasites in the northeast Atlantic were trematodes (19 species) and nematodes (13 species), including larval anisakids, which comprised 58.2% of the total number of individuals.^[3] Parasites of Atlantic cod include copepods, digeneans, monogeneans, acanthocephalans, cestodes, nematodes, myxozoans and protozoans:^[3]

Monogenea

Diclidophora merlangi^[3]

Trematoda – metacercariae

Trematoda – adult

Cestoda – larval forms

Cestoda – adult

Abothrium gadi^[3]

Nematoda – larval forms

Nematoda – adults

Acanthocephala – post-cystacanths

Corynosoma semerme^[3]
Corynosoma strumosum^[3]

Acanthocephala – adults

Echinorhynchus gadi (s.l.)^[3]

Hirudinea – adults

Copepoda - larval forms

Caligus sp. copepodite^[3]
Copepoda fam. gen. sp. copepodite^[3]

Copepoda – adults

Amphipoda

Lafystius sturionis^[3]

Isopoda

Gnathia elongata (praniza larva)^[3]

References

^ ^a ^b Matthews B (1998) An Introduction to Parasitology Page 73–74. Cambridge University Press. ISBN 978-0-521-57691-8.
^ ^a ^b Ross Piper (2007). Extraordinary Animals: An Encyclopedia of Curious and Unusual Animals. Greenwood Press. ISBN 978-0-313-33922-6.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^aa ^ab ^ac ^ad ^ae ^af ^ag ^ah ^ai ^aj ^ak ^al ^am ^an ^ao ^ap ^aq ^ar ^as ^at ^au ^av ^aw ^ax ^ay ^az ^ba ^bb ^bc ^bd ^be ^bf ^bg ^bh ^bi ^bj ^bk ^bl Perdiguero-Alonso D., Montero F. E., Raga J. A. & Kostadinova A. (2008). "Composition and structure of the parasite faunas of cod, Gadus morhua L. (Teleostei: Gadidae), in the North East Atlantic". Parasites & Vectors 1: 23. doi:10.1186/1756-3305-1-23
^ Bouguerche, Chahinez; Huston, Daniel C.; Cribb, Thomas H.; Karlsbakk, Egil; Ahmed, Mohammed; Holovachov, Oleksandr (2023). "Hidden in the fog: morphological and molecular characterisation of Derogenes varicus sensu stricto (Trematoda, Derogenidae) from Sweden and Norway, and redescription of two poorly known Derogenes species". Parasite. 30: 35. doi:10.1051/parasite/2023030. ISSN 1776-1042. PMC 10503491. PMID 37712837.

This article incorporates CC-BY-2.0 text from the reference: Perdiguero-Alonso D., Montero F. E., Raga J. A. & Kostadinova A. (2008). "Composition and structure of the parasite faunas of cod, Gadus morhua L. (Teleostei: Gadidae), in the North East Atlantic". Parasites & Vectors 2008, 1: 23. doi:10.1186/1756-3305-1-23

Axelrod HR and Untergasser D (1989). Handbook of fish diseases. Neptune, NJ: T.F.H. Publications. ISBN 0-866227032.
Andrews C (1988). The Manual of Fish Health. Stillwater, MN: Voyageur Press. ISBN 1-56465-160-6.
Fairfield, T (2000). A commonsense guide to fish health. Woodbury, N.Y: Barron's Educational Series. ISBN 0-7641-1338-0.

v t e Fish diseases and parasites
Pathogens	Aeromonas salmonicida Nervous necrosis virus Columnaris Enteric redmouth Fin rot Fish dropsy Flavobacterium Hematopoietic necrosis Heterosigma akashiwo Hole in the head Hypodermal and hematopoietic necrosis Infectious pancreatic necrosis Koi herpes virus Mycobacterium marinum (Aquarium granuloma) Novirhabdovirus Pfiesteria piscicida Photobacterium damselae ssp piscicida Salmon anemia Streptococcus iniae Spring viraemia of carp Taura syndrome UDN VHS White spot Yellowhead
Parasites	Abergasilus Amoebic gill disease Anisakis Carp lice Ceratomyxa shasta Clinostomum marginatum Dactylogyrus vastator Diphyllobothrium Cymothoa exigua Eustrongylidosis Epizootic ulcerative syndrome Flukes Glugea Gyrodactylus salaris Henneguya zschokkei Ich (freshwater) Ich (marine) Kudoa thyrsites Lernaeocera branchialis Microsporidia Monogenea Myxobolus cerebralis Myxosporea Nanophyetus salmincola Pseudorhabdosynochus spp. Salmon lice Saprolegnia Schistocephalus solidus Sea louse Sphaerothecum destruens Swim bladder disease Tetracapsuloides bryosalmonae Velvet Xenoma
Fish groups	Diseases and parasites in cod Diseases and parasites in salmon Disease in ornamental fish List of aquarium diseases
Related topics	Amnesic shellfish poisoning Brevetoxin Ciguatera Diarrheal shellfish poisoning Fish kill Marine viruses Neurotoxic shellfish poisoning Paralytic shellfish poisoning Saxitoxin Scombroid food poisoning

Categories:

Hidden categories:

Laenaeocera branchialis

Parasites of Atlantic cod

References

Further reading