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Influence of cadmium exposure on the incidence of first intermediate host encystment by Echinoparyphium recurvatum cercariae in Lymnaea peregra

Published online by Cambridge University Press:  12 April 2024

N.J. Morley ,
M. Crane  and
J.W. Lewis
N.J. Morley*
Affiliation:
School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, TW20 0EX, UK
M. Crane
Affiliation:
School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, TW20 0EX, UK
J.W. Lewis
Affiliation:
School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, TW20 0EX, UK
*
*Fax: +44 (0) 1784 434326 E-mail: n.morley@rhul.ac.uk
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Abstract

The effect of cadmium exposure of the snail first intermediate host Lymnaea peregra on the incidence of encystment of Echinoparyphium recurvatum (Digenea: Echinostomatidae) cercariae without emergence from the snail was investigated. Exposure to 100 μg l−1 Cd for 72 h caused a significant increase in the incidence of first host encystment when compared to controls. In addition, autometallographic staining of E. recurvatum daughter rediae and developing cercariae showed that there was metal accumulation within their body tissues. The significance of these findings to parasite transmission in metal-polluted environments is discussed.

Type
Review Article
Information
Journal of Helminthology , Volume 78 , Issue 4 , December 2004 , pp. 329 - 332
Copyright
Copyright © Cambridge University Press 2004

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References

Abd Allah, A.T., Wanas, M.Q.S. & Thompson, S.N. (1997) Effects of heavy metals on survival and growth of Biomphalaria glabrata Say (Gastropoda: Pulmonata) and interaction with schistosome infection. Journal of Molluscan Studies 63, 79–86.CrossRefGoogle Scholar
Adam, M.E. (1991) Ecological studies on larval digeneans parasitizing freshwater molluscs in the Lower Thames Valley. PhD thesis, University of London.Google Scholar
Adam, M.E. & Lewis, J.W. (1992) Sites of encystment by the metacercariae of Echinoparyphium recurvatum in Lymnaea peregra . Journal of Helminthology 66, 96–99.CrossRefGoogle ScholarPubMed
Cross, M.A., Irwin, S.W.B. & Fitzpatrick, S.M. (2001) Effects of heavy metal pollution on swimming and longevity in cercariae of Cryptocotyle lingua (Digenea: Heterophyidae). Parasitology 123, 499–507.CrossRefGoogle ScholarPubMed
Danscher, G., Rytter Norgaard, J.O. & Baatrup, E. (1987) Autometallography: tissue metals demonstrated by a silver enhancement kit. Histochemistry 86, 465–469.CrossRefGoogle ScholarPubMed
Evans, N.A., Whitfield, P.J. & Dobson, A.P. (1981) Parasite utilization of a host community–the distribution and occurrence of metacercarial cysts of Echinoparyphium recurvatum (Digenea: Echinostomatidae) in seven species of molluscs at Harting Pond, Sussex. Parasitology 83, 1–12.CrossRefGoogle Scholar
HMSO (1969) Fish toxicity tests. HMSO Leaflet No. Dd. 139779 K36 12/69.Google Scholar
Lo, C.-T. (1995) Echinostoma macrorchis: life history, population dynamics of intramolluscan stages, and the first and second intermediate hosts. Journal of Parasitology 81, 569–576.CrossRefGoogle ScholarPubMed
Morley, N.J., Crane, M. & Lewis, J.W. (2003a) Effects of cadmium and zinc toxicity on orientation behaviour of Echinoparyphium recurvatum (Digenea: Echinostomatidae) cercariae. Diseases of Aquatic Organisms 56, 89–92.CrossRefGoogle ScholarPubMed
Morley, N.J., Crane, M. & Lewis, J.W. (2003b) Cadmium toxicity and snail–digenean interactions in a population of Lymnaea spp. Journal of Helminthology 77, 49–55.CrossRefGoogle Scholar
Morley, N.J., Irwin, S.W.B. & Lewis, J.W. (2003c) Pollution toxicity to the transmission of larval digeneans through their molluscan intermediate hosts. Parasitology (supplement)126, S5–S26.CrossRefGoogle Scholar
Nasir, P. (1984) British freshwater cercariae. Cumana, Venezuela, Universidad de Oriente Press.Google Scholar
Peitrock, & Marcogliese, D.J. (2003) Free-living endohelminth stages: at the mercy of environmental conditions. Trends in Parasitology 19, 293–299.CrossRefGoogle Scholar
Poulin, R. & Cribb, T.H. (2002) Trematode life cycles: short is sweet? Trends in Parasitology 18, 176–183.CrossRefGoogle ScholarPubMed
Rees, F.G. (1932) An investigation into the occurrence, structure and life histories of the trematode parasites of four species of Lymnaea (Lymnaea truncatula (Mull), Lymnaea palustris (Mull), and Lymnaea stagnalis (Linne)), and Hydrobia jenkinsi (Smith)) in Glamorgan and Monmouth. Proceedings of the Zoological Society of London 1932, 1–32.CrossRefGoogle Scholar
Vivian, C.M.G. & Massie, K.S. (1977) Trace metals in waters and sediments of the River Tawe, South Wales, in relation to local sources. Environmental Pollution 14, 47–61.Google Scholar
Wesenberg-Lund, C. (1934) Contributions to the development of the Trematoda Digenea. Part 2. The biology of the freshwater cercariae in Danish freshwaters. Memoires de l'Academie Royale des Sciences et des Lettres de Danemark, Copenhague, Section des Sciences. 9me Serie, Tome 5(3): 1–223.Google Scholar
Yescott, R.E. & Hansen, E.L. (1976) Effect of manganese on Biomphalaria glabrata infected with Schistosoma mansoni . Journal of Invertebrate Pathology 28, 315–320.CrossRefGoogle ScholarPubMed