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dc.contributor.authorHofmeester, Tim R
dc.contributor.authorJansen, Patrick A
dc.contributor.authorWijnen, Hendrikus J
dc.contributor.authorCoipan, Elena C
dc.contributor.authorFonville, Manoj
dc.contributor.authorPrins, Herbert H T
dc.contributor.authorSprong, Hein
dc.contributor.authorvan Wieren, Sipke E
dc.date.accessioned2018-01-04T13:17:06Z
dc.date.available2018-01-04T13:17:06Z
dc.date.issued2017-07-26
dc.identifier.citationCascading effects of predator activity on tick-borne disease risk. 2017, 284 (1859) Proc. Biol. Sci.en
dc.identifier.issn1471-2954
dc.identifier.pmid28724731
dc.identifier.doi10.1098/rspb.2017.0453
dc.identifier.urihttp://hdl.handle.net/10029/621025
dc.description.abstractPredators and competitors of vertebrates can in theory reduce the density of infected nymphs (DIN)-an often-used measure of tick-borne disease risk-by lowering the density of reservoir-competent hosts and/or the tick burden on reservoir-competent hosts. We investigated this possible indirect effect of predators by comparing data from 20 forest plots across the Netherlands that varied in predator abundance. In each plot, we measured the density of questing Ixodes ricinus nymphs (DON), DIN for three pathogens, rodent density, the tick burden on rodents and the activity of mammalian predators. We analysed whether rodent density and tick burden on rodents were correlated with predator activity, and how rodent density and tick burden predicted DON and DIN for the three pathogens. We found that larval burden on two rodent species decreased with activity of two predator species, while DON and DIN for all three pathogens increased with larval burden on rodents, as predicted. Path analyses supported an indirect negative correlation of activity of both predator species with DON and DIN. Our results suggest that predators can indeed lower the number of ticks feeding on reservoir-competent hosts, which implies that changes in predator abundance may have cascading effects on tick-borne disease risk.
dc.language.isoenen
dc.rightsArchived with thanks to Proceedings. Biological sciencesen
dc.titleCascading effects of predator activity on tick-borne disease risk.en
dc.typeArticleen
dc.identifier.journalProc Biol Sci 2017, 284(1859):20170453en
html.description.abstractPredators and competitors of vertebrates can in theory reduce the density of infected nymphs (DIN)-an often-used measure of tick-borne disease risk-by lowering the density of reservoir-competent hosts and/or the tick burden on reservoir-competent hosts. We investigated this possible indirect effect of predators by comparing data from 20 forest plots across the Netherlands that varied in predator abundance. In each plot, we measured the density of questing Ixodes ricinus nymphs (DON), DIN for three pathogens, rodent density, the tick burden on rodents and the activity of mammalian predators. We analysed whether rodent density and tick burden on rodents were correlated with predator activity, and how rodent density and tick burden predicted DON and DIN for the three pathogens. We found that larval burden on two rodent species decreased with activity of two predator species, while DON and DIN for all three pathogens increased with larval burden on rodents, as predicted. Path analyses supported an indirect negative correlation of activity of both predator species with DON and DIN. Our results suggest that predators can indeed lower the number of ticks feeding on reservoir-competent hosts, which implies that changes in predator abundance may have cascading effects on tick-borne disease risk.


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