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The ecology of endoparasitic helminth infections of brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss) in Scotland. 1995

M Dorucu, and D W Crompton, and F A Huntingford, and D E Walters
Division of Environmental and Evolutionary Biology, University of Glasgow, Scotland, U.K.

Two hundred and forty brown trout (Salmo trutta) and 49 rainbow trout (Oncorhynchus mykiss), obtained from 21 locations in Central Scotland between October 1990 and August 1993, were examined for endoparasitic helminth infections. Crepidostomum farionis (Digenea) was the most widely distributed helminth species, followed by Eubothrium crassum (Cestoda), Diphyllobothrium dendriticum and D. ditremum (Cestoda), Neoechinorhynchus rutili (Acanthocephala), Echinorhynchus truttae (Acanthocephala), Eustrongylides sp. (Nematoda), Capillaria salvelini (Nematoda), Cyathocephalus truncatus (Cestoda), Raphidascaris acus (Nematoda) and Cystidicola farionis (Nematoda), in that order. The prevalences and intensities of each helminth infection were recorded. No evidence was found to indicate that even fish with the highest worm burdens (e.g. 339 plerocercoids of Diphyllobothrium spp.) were experiencing any obvious morbidity. An analysis of pairs of associations between species of helminths revealed a significantly positive association between N. rutili and C. farionis (P < 0.01). The results are discussed in terms of patterns in helminth communities in freshwater fish.

UI MeSH Term Description Entries
D009348 Nematoda A phylum of unsegmented helminths with fundamental bilateral symmetry and secondary triradiate symmetry of the oral and esophageal structures. Many species are parasites. Phasmidia,Secernentea,Sipunculida
D009349 Nematode Infections Infections by nematodes, general or unspecified. Infections, Nematode,Infection, Nematode,Nematode Infection
D010986 Platyhelminths A phylum of acoelomate, bilaterally symmetrical flatworms, without a definite anus. It includes three classes: Cestoda, Turbellaria, and Trematoda. Flatworms,Flatworm,Platyhelminth
D002590 Cestode Infections Infections with true tapeworms of the helminth subclass CESTODA. Bertielliasis,Cenuriasis,Coenuriasis,Dipylidiasis,Raillietiniasis,Tapeworm Infection,Bertielliases,Cenuriases,Cestode Infection,Coenuriases,Dipylidiases,Infection, Cestode,Infection, Tapeworm,Infections, Cestode,Infections, Tapeworm,Raillietiniases,Tapeworm Infections
D000049 Acanthocephala A phylum of parasitic worms, closely related to tapeworms and containing two genera: Moniliformis, which sometimes infects man, and Macracanthorhynchus, which infects swine. Thorny-Headed Worms,Acanthocephalas,Thorny Headed Worms,Thorny-Headed Worm,Worm, Thorny-Headed,Worms, Thorny-Headed
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012606 Scotland The most northerly of the four countries of the United Kingdom, occupying about one-third of the island of Great Britain. The capital is Edinburgh.
D014201 Trematode Infections Infections caused by infestation with worms of the class Trematoda. Fasciolopsiasis,Metagonimiasis,Infections, Trematode,Fasciolopsiases,Infection, Trematode,Metagonimiases,Trematode Infection
D014337 Trout Various fish of the family SALMONIDAE, usually smaller than salmon. They are mostly restricted to cool clear freshwater. Some are anadromous. They are highly regarded for their handsome colors, rich well-flavored flesh, and gameness as an angling fish. The genera Salvelinus, Salmo, and ONCORHYNCHUS have been introduced virtually throughout the world. Chars,Salvelinus,Char
D015995 Prevalence The total number of cases of a given disease in a specified population at a designated time. It is differentiated from INCIDENCE, which refers to the number of new cases in the population at a given time. Period Prevalence,Point Prevalence,Period Prevalences,Point Prevalences,Prevalence, Period,Prevalence, Point,Prevalences

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