Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-29T02:04:34.609Z Has data issue: false hasContentIssue false
  • English
  • Français

The effects of computer-controlled shadow stimuli on the success of cercarial transmission by Cryptocotyle lingua (Digenea: Heterophyidae)

Published online by Cambridge University Press:  06 April 2009

J. G. Rea  and
S. W. B. Irwin
J. G. Rea
Affiliation:
Department of Biological and Biomedical Sciences, University of Ulster at Jordanstown, Newtownabbey, Co. Antrim BT37 0QB, N. Ireland
S. W. B. Irwin
Affiliation:
Department of Biological and Biomedical Sciences, University of Ulster at Jordanstown, Newtownabbey, Co. Antrim BT37 0QB, N. Ireland
Get access Rights & Permissions [Opens in a new window]

Summary

Pectoral fins from juvenile rainbow trout (Oncorhynchus mykiss) were used in a bioassay, the object of which was to quantify the effect of simulated shadow stimuli on the transmission success of the cercariae. For a period of 60 min, parasites and fins were exposed to a sequence of computer-controlled shadow stimuli, continuous light or total darkness, and subsequently the number of infections was counted. Trials were conducted with cercariae 1, 12 and 24 h old. Within the constraints of the experimental procedure, shadows were found to increase significantly the number of infections achieved by the 12-h-old parasites. As the cercariae aged, their ability to infect host tissue declined. The relevance of these results to transmission in the natural environment is discussed.

Keywords

Cryptocotylecercariaebehaviourshadow responsetransmission
Type
Research Article
Information
Parasitology , Volume 105 , Issue 2 , October 1992 , pp. 243 - 246
Copyright
Copyright © Cambridge University Press 1992

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Chapman, H. D. (1974). The behaviour of the cercariae of Cryptocotyle lingua. Zeitschrift für Parasitenkunde 44, 211–26.CrossRefGoogle ScholarPubMed
Dempster, S. J. & Rau, M. E. (1989). Plagiorchis noblei in Aedes aegypti: Cercarial age and infectivity. Journal of the American Mosquito Control Association 5, 261–3.Google ScholarPubMed
Dönges, J. (1964). Der Lebenszyklus von Posthodiplostomum cuticola (V. Nordmann (1832), Dubois 1936) (Trematoda, Diplostomatidae). Zeitschrift für Parasitenkunde 24, 169–248.CrossRefGoogle Scholar
Evans, N. A. & Gordan, D. M. (1983). Experimental studies on the transmission dynamics of the cercariae of Echinoparyphium recurvatum (Digenea: Echinostomatidae). Parasitology 87, 167–74.CrossRefGoogle Scholar
Haas, W. (1960). Reizphysiologische Untersuchungen an Cercarien von Diplostomum spathaceum. Zeitschrift für vergleichende Physiologie 64, 254–87.CrossRefGoogle Scholar
Lawson, J. R. (1977). The biology of the cercaria and early schistosomulum of Schistosoma mansoni. D. Phil. thesis, University of York.Google Scholar
Lawson, J. R. & Wilson, R. A. (1980). The survival of the cercariae of Schistosoma mansoni in relation to water temperature and glycogen utilization. Parasitology 81, 337–48.CrossRefGoogle ScholarPubMed
Miller, H. M. & Mahaffy, E. (1930). Reactions of Cercaria hamata to light and mechanical stimuli. Biological Bulletin 59, 95–103.CrossRefGoogle Scholar
Miller, H. M. & McCoy, O. R. (1930). An experimental study of the behaviour of Cercaria floridensis in relation to its fish intermediate host. Journal of Parasitology 16, 185–97.CrossRefGoogle Scholar
Pike, A. W. (1990). Interpreting parasite host location behaviour. Parasitology Today 6, 343–4.CrossRefGoogle ScholarPubMed
Potter, I. C., Gardner, D. C. & Claridge, P. N. (1988). Age composition, growth, movements, meristics and parasites of the whiting, Merlangius merlangus, in the Severn Estuary and Bristol Channel. Journal of the Marine Biology Association of the United Kingdom 68, 295–313.CrossRefGoogle Scholar
Rea, J. G. & Irwin, S. W. B. (1991). Behavioural responses of the cercariae of Cryptocotyle lingua (Digenea: Heterophyidae) to computer-controlled shadow sequences. Parasitology 103, 471–7.CrossRefGoogle ScholarPubMed
Sekhar, S. C. & Threlfall, W. (1970). Infection of the Cunner, Tautogolabrus adspersus (Walbrum), with metacercariae of Cryptocotyle lingua (Creplin, 1825). Journal of Helminthology 44, 189–98.CrossRefGoogle Scholar
Shotter, R. A. (1976). The distribution of some helminth and copepod parasites in the tissues of whiting, Merlangius merlangus L., from Manx waters. Journal of Fish Biology 8, 101–17.CrossRefGoogle Scholar
Smyth, J. D. & Halton, D. W. (1983). The Physiology of Trematodes, 2nd Edn.Cambridge: Cambridge University Press.Google Scholar
Van Den Broek, W. L. F. (1979). Infection of estuarine fish populations by Cryptocotyle lingua (Creplin). Journal of Fish Biology 14, 395–402.CrossRefGoogle Scholar
Wheeler, N. C. (1939). A comparative study on the behaviour of four species of pleurolophocercous cercariae. Journal of Parasitology 25, 343–53.CrossRefGoogle Scholar