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Infection dynamics of larval Bothriocephalus claviceps in Cyclops vicinus

Published online by Cambridge University Press:  06 April 2009

P. Nie  and
C. R. Kennedy
P. Nie
Affiliation:
Hatherly Laboratories, Department of Biological Sciences, University of Exeter, Exeter EX4 4PS, UK
C. R. Kennedy
Affiliation:
Hatherly Laboratories, Department of Biological Sciences, University of Exeter, Exeter EX4 4PS, UK
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Summary

The infection dynamics of Cyclops vicinus by the larvae of Bothriocephalus claviceps were studied experimentally. The mean number of procercoids/copepod rose to a plateau of approximately 14 as the density of eggs increased, whilst the number of copepods surviving decreased correspondingly. Copepods exposed to eggs of B. claviceps survived less well than controls, and those exposed to a higher density of eggs survived less well than those to a lower density. The mean number of parasites/copepod and the mortality of copepods were found to increase with the increasing time of exposure to eggs even when egg density was constant. These two parameters were also found to differ between gravid female copepods and unsexed young copepods. Young copepods suffered a higher parasite burden and thus a higher mortality, indicating that there are age or developmental-stage related differences in susceptibility of copepods to infection.

Keywords

CyclopsBothriocephalus clavicepstransmissioninfection dynamics
Type
Research Article
Information
Parasitology , Volume 106 , Issue 5 , June 1993 , pp. 503 - 509
Copyright
Copyright © Cambridge University Press 1993

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