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Nocturnal hatching in the monogenean skin parasite Entobdella hippoglossi from the halibut, Hippoglossus hippoglossus

Published online by Cambridge University Press:  06 April 2009

Graham C. Kearn
Graham C. Kearn
Affiliation:
School of Biological Sciences, University of East Anglia, Norwich, NOR 88C, U.K.
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Extract

When eggs of the monogenean parasite Entobdella hippoglossi, from the skin of the halibut (Hippoglossus hippoglossus), are incubated at 7 °C in alternating 12 h periods of dim blue light (intensity about 3 nW/cm2) and darkness, free-swimming larvae are recovered mostly at the end of the first 2 h of the period of darkness. Larvae do not emerge in significant numbers when the eggs are mechanically disturbed during the light or dark periods, or when the eggs are placed in shadow for periods of 5–25 min during the illumination period. The treatment of fully developed eggs with washings from halibut or from sole or with halibut skin mucus failed to produce hatching.

The free-swimming life of the larvae at 7 °C is in excess of 24 h and within 4 h of hatching at 4 °C some larvae are able to attach themselves to halibut skin and shed their ciliated epidermal cells.

The relationship between the hatching pattern of the eggs of the parasite and the behaviour of the halibut is discussed.

Type
Research Article
Information
Parasitology , Volume 68 , Issue 2 , April 1974 , pp. 161 - 172
Copyright
Copyright © Cambridge University Press 1974

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References

REFERENCES

Ackefors, H., Ahnström, G., Eriksson, Å., Lindh, R. & Rosén, C. (1969). Electrical and mechanical construction of an underwater light meter. Meddelande från Havsfiskelaboratoriet, Lysekil no. 74, 1–10.Google Scholar
Bardach, J. E. & Todd, J. H. (1970). Chemical communication in fish. In Advances in Chemoreception, vol. 1 (ed. Johnston, J. W., Moulton, D. G. and Turk, A.). New York: Meredith Corporation.Google Scholar
Bychowsky, B. E. (1957). Monogenetic Trematodes, their Classification and Phylogeny. Moscow: Leningrad. Academy of Sciences, U.S.S.R. (in Russian); English translation by W. J. Hargis and P. C. Oustinoff (1961). Washington: American Institute of Biological Sciences.Google Scholar
De Groot, S. J. (1969). A review paper on the behaviour of flatfishes. Food and Agricultural Organization of the United Nations, Fisheries Report no. 62, vol. 2, 139–67.Google Scholar
De Groot, S. J. (1971). On the interrelationships between morphology of the alimentary tract, food and feeding behaviour in flatfishes (Pisces: Pleuronectiformes). Netherlands Journal of Sea Research 5, 121–96.CrossRefGoogle Scholar
Evans, H. M. (1937). A comparative study of the brains in Pleuronectidae. Proceedings of the Royal Society B 122, 308–43.Google Scholar
Joensen, J. S. (1954). On the life history of halibut in Faroe waters. Meddelelser fra Danmarks Fiskeri-og Havundersøgelser 1, 1–25.Google Scholar
Kearn, G. C. (1967). Experiments on host-finding and host-specificity in the monogenean skin parasite Entobdella soleae. Parasitology 57, 585–605.CrossRefGoogle ScholarPubMed
Kearn, G. C. (1973). An endogenous circadian hatching rhythm in the monogenean skin parasite Entobdella soleae, and its relationship to the activity rhythm of the host (Solea solea). Parasitology 66, 101–22.CrossRefGoogle Scholar
Kearn, G. C. (1974). The effects of fish skin mucus on hatching in the monogenean parasite Entobdella soleae from the skin of the common sole (Solea solea). Parasitology. 68, 173–88.CrossRefGoogle ScholarPubMed
Kearn, G. C. & Baker, N. O. (1973). Ultrastructural and histochemical observations on the pigmented eyes of the oncomiracidium of Entobdella soleae, a monogenean skin parasite of the common sole, Solea soles. Zeitschrift für Parasitenkunde 41, 239–54.CrossRefGoogle Scholar
Llewellyn, J. (1972). Behaviour of monogeneans. In Behavioural Aspects of Parasite Transmission. Zoological Journal of the Linnean Society 51, Supplement 1, 19–30.Google Scholar
Lyons, K. M. (1972). Sense organs of monogeneans. In Behavioural Aspects of Parasite Transmission. Zoological Journal of the Linnean Society 51, Suppl. 1, 181–99.Google Scholar
McCracken, F. D. (1958). On the biology and fishery of the Canadian Atlantic halibut, Hippoglossushippoglossus L. Journal of the Fisheries Research Board of Canada 15, 1269–1311.CrossRefGoogle Scholar
MacIntyre, A. D. (1952). The food of halibut from North Atlantic fishing grounds. Marine Research, no. 3, 1–20.Google Scholar
Paling, J. E. (1969). The manner of infection of trout gills by the monogenean parasite Discocotyle sagittata. Journal of Zoology, London 159, 293–309.CrossRefGoogle Scholar
Steven, G. A. (1930). Bottom fauna and the food of fishes. Journal of the Marine Biological Association of the United Kingdom 16, 677–700.CrossRefGoogle Scholar
Wheeler, A. (1969). The Fishes of the British Isles and North-West Europe. 613 pp. London: Macmillan.Google Scholar