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The identity of the larval nematodes found in the body muscles of the cod (Gadus callarias L.)

Published online by Cambridge University Press:  06 April 2009

J. N. R. Grainger
J. N. R. Grainger
Affiliation:
Department of Zoology, The University, Hull
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Extract

Larval nematodes occurring in cysts in the body musculature of Icelandic cod have been identified as belonging to Porrocaecum Raillet & Henry, 1912 (subgenus Terranova Leiper & Atkinson, 1914), probably P. decipiens Krabbe and Anisakis Dujardin, 1845. Identification was made possible by rearing them in vitro to the pre-adult condition. The experiments show that the following conditions are necessary for the moult to the pre-adult state; (1) a fairly high culture temperature (37° C.); (2) the presence of pieces of fish for 24 hr. towards the beginning of the culture period. 1 % pepsin, while it assists the hatching from the cysts, is not essential for the moult to the pre-adult condition. Experiments indicate that the moult takes place 3–5 days after fish has been supplied.

The larvae and pre-adults of both genera are described. Samples of larvae from cod from Greenland and the Barents Sea probably consist only of Porrocaecum and Anisakis, but a sample from West Scotland contained only Porrocaecum. The significance of the moult to the pre-adult state is discussed.

Information

Type
Research Article
Information
Parasitology , Volume 49 , Issue 1-2 , May 1959 , pp. 121 - 131
Copyright
Copyright © Cambridge University Press 1959

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References

REFERENCES

Baylis, H. A. (1916). Some Ascarids in the British Museum (Natural History). Parasitology, 18, 360–78.CrossRefGoogle Scholar
Baylis, H. A. (1944). ‘Capsularia Marina’ and the Ascarids of Marine hosts. Parasitology, 36, 119–21.CrossRefGoogle Scholar
Dollfus, R. Ph. (1948). Né;matode à oesophage sigmoide de l'éstomac d'une Orca orca (L. 1789) (Cétace odontocète). Liste des Anisakis des cétacés et des pinnipèdes. Ann. Parasit. hum. comp. 23, 305–22.Google Scholar
Dollfus, R. Ph. (1953). Aperçu général sur l'histoire naturelle des parasites animaux de la morue atlanto-arctique Gadus callarias L. ( = morrhua L.). Paris, Lechevalier. 423 pp.Google Scholar
Hitchcock, D. J. (1950). Parasitological study on the Eskimos in the Bethel area of Alaska. J. Parasit. 36, 232–4.CrossRefGoogle Scholar
Lyster, L. L. (1940). Parasites of some Canadian sea mammals. Canad. J. Res. 18D, 395–409.CrossRefGoogle Scholar
Martin, O. (1921). Über Ascaridenlarven aus dem Fleisohe von Seefischen. Z. Infekt. Kr. Haustiere, 22, 13–36.Google Scholar
Mosgovoy, A. A. (1951). In Skrjabin, K. I., Shikhobalova, N. P. & Mosgovoy, A. A., Descriptive Catalogue of Parasitic Nematodes, vol. 2. Oxyurata and Ascaridata. Moscow. 632 pp. (In Russian.)Google Scholar
Scott, D. M. (1953). Experiments with the harbour seal, Phoca vitulina, a definitive host of a marine nematode, Porrocaecum decipiens. J. Fish Res. Bd. Can. 10, 539–47.CrossRefGoogle Scholar
Scott, D. M. (1954). Experimental infection of Atlantic Cod with a larval marine nematode from Smelt. J. Fish. Res. Bd Can. 11, 894–900.CrossRefGoogle Scholar