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Density-dependent effects of Anguillicola crassus (Nematoda) within and on its copepod intermediate hosts
Ashworth, S.T.; Kennedy, C.R.; Blanc, G. (1996). Density-dependent effects of Anguillicola crassus (Nematoda) within and on its copepod intermediate hosts. Parasitology 113(3): 303-309
In: Parasitology. Cambridge University Press: London. ISSN 0031-1820, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Ashworth, S.T.
  • Kennedy, C.R.
  • Blanc, G.

Abstract
    Density-dependent effects of Anguillicola crassus larval infections in the copepod intermediate host were examined experimentally. Three species of copepods (Cyclops vicinus, C. Viridis and C. Fuscus) were subjected to a range of doses of larval A. Crassus within infection arenas. Prevalence, intensity and parasite dispersion (variance:mean abundance) values increase and then approach an asymptote as infection dose increases. Infection parameters differ between species of copepod. Increasing temperature has a negative effect on the establishment of the parasite population within the intermediate host. Parasite-induced host mortality increases with dose. These mechanisms have the potential to regulate populations of A. Crassus larvae within the copepod population and hence the whole suprapopulation.

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