Establishment and interspecific associations in two species of Ichthyocotylurus (Trematoda) parasites in perch (Perca fluviatilis)

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Show simple item record Faltynkova, Anna Karvonen, Anssi Valtonen, Tellervo 2012-08-20T11:14:46Z 2012-08-20T11:14:46Z 2011
dc.identifier.citation Faltynkova, A., Karvonen, A., & Valtonen, T. (2011). Establishment and interspecific associations in two species of Ichthyocotylurus (Trematoda) parasites in perch (Perca fluviatilis). Parasites & Vectors, 4:85. doi:doi:10.1186/1756-3305-4-85
dc.identifier.issn 1756-3305
dc.description.abstract Background: Co-infections of multiple parasite species in hosts may lead to interspecific associations and subsequently shape the structure of a parasite community. However, few studies have focused on these associations in highly abundant parasite species or, in particular, investigated how the associations develop with time in hosts exposed to co-infecting parasite species for the first time. We investigated metacercarial establishment and interspecific associations in the trematodes Ichthyocotylurus variegatus and I. pileatus co-infecting three age cohorts of young perch (Perca fluviatilis). Results: We found that the timing of transmission of the two Ichthyocotylurus species was very similar, but they showed differences in metacercarial development essentially so that the metacercariae of I. pileatus became encapsulated faster. Correlations between the abundances of the species were significantly positive after the first summer of host life and also within the main site of infection, the swim bladder. High or low abundances of both parasite species were also more frequent in the same host individuals than expected by chance, independently of host age or size. However, the highest abundances of the species were nevertheless observed in different host individuals and this pattern was consistent in all age cohorts. Conclusions: The results suggest similar temporal patterns of transmission, non-random establishment, and facilitative rather than competitive associations between the parasite species independently of the age of the infracommunities. However, we suggest that spatial differences in exposure are most likely responsible for the segregation of the parasite species observed in the few most heavily infected hosts. Regardless of the underlying mechanism, the result suggests that between-species associations should be interpreted with caution along with detailed examination of the parasite distribution among host individuals. fi
dc.language.iso eng
dc.publisher BioMed Central (BMC)
dc.relation.ispartofseries Parasites & Vectors
dc.rights © 2011 Faltýnková et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.rights openAccess fi
dc.subject.other parasites en
dc.subject.other host-parasite en
dc.subject.other interaction en
dc.subject.other loiset fi
dc.subject.other isäntälajit fi
dc.subject.other vuorovaikutussuhteet fi
dc.title Establishment and interspecific associations in two species of Ichthyocotylurus (Trematoda) parasites in perch (Perca fluviatilis)
dc.type Article
dc.identifier.urn URN:NBN:fi:jyu-201208202190
dc.subject.kota 118
dc.contributor.laitos Bio- ja ympäristötieteiden laitos fi
dc.contributor.laitos The Department of Biological and Environmental Science en
dc.identifier.doi doi:10.1186/1756-3305-4-85
dc.description.version Publisher's PDF
dc.type.coar journal article
dc.description.reviewStatus peerReviewed
dc.relation.issn 1756-3305
dc.type.version publishedVersion

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