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  To avoid or eliminate: cestode infections in copepods

Van der Veen, I. T., & Kurtz, J. (2002). To avoid or eliminate: cestode infections in copepods. Parasitology, 124, 465-474. doi:10.1017/S0031182001001275.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-DD53-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-DD54-7
Genre: Journal Article

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van der Veen, I.T., J. Kurtz, 2002, S-37801.pdf (Publisher version), 269KB
 
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Van der Veen, I. T.1, Author              
Kurtz, J.1, Author              
Affiliations:
1Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

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Free keywords: Schistocephalus solidus; Macrocyclops albidus; prevalence; intensity; body size; survival; parasite resistance
 Abstract: The outcome of a parasite infection is the result of the interaction between the host and the parasite. In the system we studied, there are 3 critical stages for the outcome of infection of the (intermediate) host, the copepod Macrocyclops albidus, with the cestode Schistocephalus solidus. During the establishment phase of the parasite, the host may firstly avoid ingesting the parasite and, secondly, may prevent the parasite from entering the body cavity and, thirdly, during the growth phase of the parasite, the host''s immune system may eliminate the parasite from the body cavity. We were able to study the growth phase separately from the establishment phase. The establishment phase was influenced by characteristics of the host as well as characteristics of the parasites. Small copepods and males performed poorly; they ere more often infected and had a lower survival. Parasites from different sib-groups differed in infectivity. During the growth phase some disappearance of parasites was observed. However, this could not be related to any of the studied characteristics of the host, and the sib-groups of parasites did not seem to differ in their likelihood to disappear. Instead, we suggest that disappearance of parasites, once they have entered the body cavity, may be due to intrinsic mortality of the parasites, independent of the host or the sib-group that the parasites belong to. This indicates that the crucial interactions between host and parasite determining the outcome of infection takes place in the short time-period between ingestion and penetration of the gut-wall.

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Language(s): eng - English
 Dates: 2002-04
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 3959
ISI: 000175266500012
DOI: 10.1017/S0031182001001275
Other: 2073/S 37801
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Title: Parasitology
Source Genre: Journal
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Pages: - Volume / Issue: 124 Sequence Number: - Start / End Page: 465 - 474 Identifier: ISSN: 0031-1820