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The attachment of the monogenean Diplozoon paradoxum to the gills of Rutilus rutilus L. I. Micro-habitat and adhesive attitude

Published online by Cambridge University Press:  06 April 2009

I. L. Owen
I. L. Owen
Affiliation:
Department of Zoology, University College of Wales, Aberystwyth*
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Extract

Both individuals of a pair of Diplozoon paradoxum Nord., 1832, when parasitizing the gills of Rutilus rutilus, are normally attached to the same hemibranch but never to the same surface of one primary lamella. A preference is shown for attachment to certain gills and also to particular locations on the gills.

Diplozoon paradoxum displays asymmetry of its haptor when attached to the gills of the roach but the haptor assumes bilateral symmetry when unattached. As in Discocotyle, this impermanent asymmetry is facultative to the left or right, dependent upon the incidence of the gill-ventilating current, so that the body of a worm will present the least amount of resistance to the water as it passes across the gills. It is probable that impermanent, facultative asymmetry occurs in other species of the genus Diplozoon, and the usefulness of the asymmetrical nature of the haptor as a taxonomic criterion is therefore extremely limited.

It is a pleasure to record my thanks to Dr F. G. Rees, University College of Wales, Aberystwyth, for her encouragement and guidance and to Dr J. Llewellyn, University of Birmingham, for his valuable help and critical reading of the manuscript. I am indebted to Mr D. Haigh for supplying me with fishes. This work was done while receiving a grant from the Department of Scientific and Industrial Research.

Type
Research Article
Information
Parasitology , Volume 53 , Issue 3-4 , November 1963 , pp. 455 - 461
Copyright
Copyright © Cambridge University Press 1963

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References

REFERENCES

Bovet, J. (1959). Observations sur l'œuf et l'oncomiracidium de Diplozoon paradoxum von Nordmann, 1832. Bull. Soc. neuchâtel. Sci. Nat. 82, 231–45.Google Scholar
Frankland, H. M. T. (1955). The life history and bionomics of Diclidophora denticulata (Trematoda: Monogenea). Parasitology, 45, 313–51.CrossRefGoogle ScholarPubMed
Llewellyn, J. (1956 a). The adhesive mechanisms of monogenetic trematodes: the attachment of Plectanocotyle gurnardi (v. Ben. & Hesse) to the gills of Trigla. J. Mar. Biol. Ass. U.K. 35, 507–14.CrossRefGoogle Scholar
Llewellyn, J. (1956 b). The host specificity, micro-ecology, adhesive attitudes and comparative morphology of some trematode gill parasites. J. Mar. Biol. Ass. U.K. 35, 113–27.CrossRefGoogle Scholar
Llewellyn, J. (1957 a). The mechanism of the attachment of Kuhnia scombri (Kuhn, 1829) (Trematoda: Monogenea) to the gills of its host Scomber scombrus L. including a note on the taxonomy of the parasite. Parasitology, 47, 30–9.CrossRefGoogle Scholar
Llewellyn, J. (1957 b). Host specificity in monogenetic trematodes. First Symposium on Host Specificity among Parasites of Vertebrates, pp. 199–212. Neuchâtel.Google Scholar
Llewellyn, J. (1958). The adhesive mechanisms of monogenetic trematodes: the attachment of species of the Diclidophoridae to the gills of gadoid fishes. J. Mar. Biol. Ass. U.K. 37, 67–79.CrossRefGoogle Scholar
Llewellyn, J. & Owen, I. L. (1960). The attachment of the monogenean Discocotyle sagittata Leuckart to the gills of Salmo trutta L. Parasitology, 50, 51–9.CrossRefGoogle Scholar
Reichenbach-Klinke, H. H. (1951). Eine neue Art der Trematodengattung Diplozoon v. Nordmann. Z. Parasitenk. 15, 148–54.CrossRefGoogle Scholar
Reichenbach-Klinke, H. H. (1954). Weitere Mitteilung über den Kiemenparasiten Diplozoon barbi Reichenbach-Klinke (Trematoda, Monogenea). Z. Parasitenk. 16, 373–87.CrossRefGoogle ScholarPubMed
Sterba, von G. (1957). Zur Morphologie und Biologie der Gattung Diplozoon. Zool. anz. 158, 181–96.Google Scholar
Zeller, E. (1872). Untersuchungen über die Entwicklung des Diplozoon paradoxum. Z. wiss. Zool. 22, 168–80.Google Scholar