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Echinostoma friedi: the effect of age of adult worms on the infectivity of miracidia

Published online by Cambridge University Press:  12 April 2024

R. Toledo ,
A. Espert ,
I. Carpena ,
M. Trelis ,
C. Muñoz-Antoli  and
J.G. Esteban
R. Toledo*
Affiliation:
Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Av. Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
A. Espert
Affiliation:
Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Av. Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
I. Carpena
Affiliation:
Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Av. Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
M. Trelis
Affiliation:
Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Av. Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
C. Muñoz-Antoli
Affiliation:
Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Av. Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
J.G. Esteban
Affiliation:
Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Av. Vicente Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain
*
*Fax: 34 963544769 E-mail: [email protected]
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Abstract

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The effect of ageing of adults of Echinostoma friedi (Trematoda: Echinostomatidae) on the infectivity of miracidia yielded was analysed. Miracidia were obtained after hatching of eggs obtained from adult worms of E. friedi collected weekly during the course of experimental infections in golden hamsters. Miracidial infectivity, measured in terms of percentage of infection in Lymnaea peregra, was significantly influenced by the age of the adult worms from which the miracidia were derived. Infective miracidia only were obtained from adult worms in the age range from 4 to 9 weeks post-infection. Infectivity was maximal in those miracidia derived from adults collected 8 and 9 weeks post-infection. The results suggest that adult worms producing viable eggs require additional maturation to be able to yield eggs containing infective miracidia.

Type
Research Article
Information
Journal of Helminthology , Volume 78 , Issue 1 , March 2004 , pp. 91 - 93
Copyright
Copyright © Cambridge University Press 2004

References

Anderson, R.M., Mercer, J.G., Wilson, R.A. & Carter, N.P. (1982) Transmission of Schistosoma mansoni from man to snail: experimental studies of miracidial survival and infectivity in relation to larval age, water temperature, host size and host age. Parasitology 85, 339–360.CrossRefGoogle Scholar
Evans, N.A. & Gordon, D.M. (1983) Experimental studies on the transmission dynamics of the cercariae of Echinoparyphium recurvatum (Digenea: Echinostomatidae). Parasitology 87, 167–174.CrossRefGoogle Scholar
McCarthy, A.M. (1999) Phototactic responses of the cercariae of Echinoparyphium recurvatum (Trematoda: Echinostomatidae) during phases of sub-maximal and maximal infectivity. Journal of Helminthology 73, 63–65.CrossRefGoogle Scholar
Muñoz-Antoli, C., Trelis, M., Espert, A., Toledo, R. & Esteban, J.G. (2002) Survival and infectivity of Echinostoma friedi (Trematoda: Echinostomatidae) miracidia and cercariae under experimental conditions. Helminthologia 39, 149–154.Google Scholar
Pechenik, J.A. & Fried, B. (1995) Effect of temperature on survival and infectivity of Echinostoma trivolvis cercariae: a test of the energy limitation hypothesis. Parasitology 111, 372–378.CrossRefGoogle Scholar
Theron, A., Rognon, A. & Pages, J.R. (1998) Host choice by larval parasites: a study of Biomphalaria glabrata snails and Schistosoma mansoni miracidia related to host size. Parasitology Research 84, 727–732.Google ScholarPubMed
Toledo, R., Muñoz-Antoli, C., Pérez, M. & Esteban, J.G. (1999a) Miracidial infectivity of Hypoderaeum conoideum (Trematoda: Echinostomatidae): differential susceptibility of two lymnaeid species. Parasitology Research 85, 212–215.CrossRefGoogle ScholarPubMed
Toledo, R., Muñoz-Antoli, C., Pérez, M. & Esteban, J.G. (1999b) Survival and infectivity of Hypoderaeum conoideum and Euparyphium albuferensis cercariae under laboratory conditions. Journal of Helminthology 73, 177–182.CrossRefGoogle ScholarPubMed
Toledo, R., Muñoz-Antoli, C. & Esteban, J.G. (2000) The life-cycle of Echinostoma friedi (Trematoda: Echinostomatidae) in Spain and a discussion on the relationships within the “revolutum” group based on cercarial chaetotaxy. Systematic Parasitology 45, 199–217.CrossRefGoogle Scholar
Toledo, R., Espert, A., Carpena, I., Muñoz-Antoli, C. & Esteban, J.G. (2003) An experimental study of the reproductive success of Echinostoma friedi (Trematoda: Echinostomatidae) in the golden hamster. Parasitology 126, 433–441.CrossRefGoogle ScholarPubMed
Waadu, G.D.B. (1991) Diplostomum spathaceum (Rud. 1819): effect of miracidial age and lifespan on miracidial infectivity. Journal of Helminthology 65, 28–30.CrossRefGoogle ScholarPubMed