Hostname: page-component-7479d7b7d-767nl Total loading time: 0 Render date: 2024-07-11T01:24:06.516Z Has data issue: false hasContentIssue false
  • English
  • Français

Photoperiodic cercarial emergence patterns of the digeneans Echinoparyphium recurvatum and Plagiorchis sp. from a mixed infection in Lymnaea peregra

Published online by Cambridge University Press:  11 April 2024

A.M. McCarthy
A.M. McCarthy*
Affiliation:
Division of Life Sciences, King's College London, University of London, Campden Hill Road, London, W8 7AH, UK
*
*Correspondence to the author at the above address c/o Professor P.J. Whitfield.
Get access Rights & Permissions [Opens in a new window]

Abstract

Photoperiodic emergence patterns of the cercariae of two digeneans, Echinoparyphium recurvatum (Echinostomatidae) and Plagiorchissp. (Plagiorchiidae), were studied experimentally using a photoperiodic regime of 12 h light: 12 h dark at a constant 18°C. In single species infections of the first intermediate host snail Lymnaea peregra, the cercariae of E. recurvatum emerged exclusively during the light phase and those of Plagiorchis sp. emerged exclusively during the dark phase. In double infections, each species retained its own discrete photoperiodic emergence pattern. This result demonstrates the absence of interference between the mechanisms responsible for the photoperiodic emergence pattern of each species. A degree of interference between the two parasites in double infections of L. peregra was evident. The presence of E. recurvatum significantly reduced the number of Plagiorchis sp. cercariae emerging in a 24 h period and also delayed the mean peak emergence time of Plagiorchissp. cercariae by 2 h. This result is consistent with the well documented antagonistic effect that the redial stages of echinostomes are known to have against the sporocysts of other digeneans within the same host mollusc.

Type
Research Article
Information
Journal of Helminthology , Volume 73 , Issue 1 , January 1999 , pp. 59 - 62
Copyright
Copyright © Cambridge University Press 1999

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

Anderson, P.A., Nowosielski, J.W. & Croll, N.A. (1976) The emergence of cercariae of Trichobilharzia ocellata and its relationship to the activity of its snail host Lymnaea stagnalis.Canadian Journal of Zoology 54, 1481–1487.CrossRefGoogle Scholar
Blankespoor, H.D. (1977) Notes on the biology of Plagiorchis noblei Park, 1936 (Trematoda: Plagiorchiidae). Proceedings of the Helminthological Society of Washington 44, 44–50.Google Scholar
Bock, D. (1984) The life cycle of Plagiorchis species 1, a species of the Plagiorchis elegans group (Trematoda: Plagiorchiidae). Zeitschrift für Parasitenkunde 70, 359–373.CrossRefGoogle Scholar
Combes, C. (1982) Trematodes: antagonism between species and sterilizing effects on snails in biological controlParasitology 84, 151–175.CrossRefGoogle Scholar
Evans, N.A. & Higgs, S. (1982) Encapsulation of digenean metacercarial cysts by alderfly larvae, Sialis lutaria . Parasitology 84, xxxvii Google Scholar
Heyneman, D., Lim, H.K. & Jeyarasasingham, U. (1972) Antagonism of Echinostoma liei (Trematoda: Echinostomatidae) against the trematodes Paryphostomum segregatum and Schistosoma mansoni . Parasitology 65, 223–233.CrossRefGoogle ScholarPubMed
HMSO (1969) Fish toxicity tests. Her Majesty's Stationery Office Leaflet Number Dd. 139779 K36 12/69.Google Scholar
Køie, M. (1987) Scanning electron microscopy of rediae, cercariae, metacercariae and adults of Mesorchis denticulatus(Rudolphi, 1802) (Trematoda, Echinostomatidae). Parasitology Research 73, 50–56.CrossRefGoogle ScholarPubMed
Lie, K.J. (1967) Antagonism of Paryphostomum segregatum rediae to Schistosoma mansoni sporocysts in the snail Biomphalaria glabrata.Journal of Parasitology 53, 696–976.Google ScholarPubMed
Macy, R.W. (1960) The life cycle of Plagiorchis vespertilionis paraorchis n. sp. (Trematoda: Plagiorchiidae) and observations on the effect of light on the emergence of the cercariae.Journal of Parasitology 46, 337–345.CrossRefGoogle Scholar
McCarthy, A.M. (1989) The biology and transmission dynamics of Echinoparyphium recurvatum (Digenea: Echinostomatidae). 329 pp. PhD thesis, King's College London, University of London.Google Scholar
Mouahid, A., Moné, H., Chaib, A. & Théron, A. (1991) Cercarial shedding patterns of Schistosoma bovis and S. haematobium from single and mixed infections of Bulinus truncatus .Journal of Helminthology 65, 8–14.CrossRefGoogle ScholarPubMed
Théron, A. (1976) The life cycle of Plagiorchis neomidis Brendow, 1970, digenean parasite of Neomys fodiens in the Pyrenees. Chronobiology of cercarial emergence. Annales de Parasitologie Humaine et Comparée 51, 329–340.CrossRefGoogle ScholarPubMed
Théron, A. & Moné, H. (1986) Shedding patterns of Schistosoma mansoni and Ribeiroia marini cercariae from a mixed infection of Biomphalaria glabrata.Journal of Helminthology 60, 255–259.CrossRefGoogle ScholarPubMed
Théron, A., Mouahid, G. & Moné, H. (1997) Schistosoma mansoni: cercarial shedding patterns from a mixed infection of Biomphalaria glabrata with two (early and late) chronobiological variants. Parasitology Research 83, 356–358.Google ScholarPubMed
Wagenbach, B.E. & Alldredge, A.L. (1974) Effect of light on the emergence pattern of Plagiorchis micracanthos cercariae from Stagnicola exilis.Journal of Parasitology 60, 782–785.CrossRefGoogle ScholarPubMed
Webber, R.A., Rau, M.E. & Lewis, D.J. (1986) The effects of various light regimens on the emergence of Plagiorchis noblei cercariae from the molluscan first intermediate host, Stagnicola elodes.Journal of Parasitology 72, 703–705.CrossRefGoogle Scholar