Parasites driving host diversity: Incidence of disease correlated with Daphnia clonal turnover*
Resource type
Journal Article
Status
Published
Recommended form of citation (APA)
Turko, P., Tellenbach, C., Keller, E., Tardent, N., Keller, B., Spaak, P., & Wolinska, J. (2018). Parasites driving host diversity: Incidence of disease correlated with Daphnia clonal turnover*. Evolution, 72(3), 619-629. https://doi.org/10.1111/evo.13413
Author(s)
Turko, Patrick
Tellenbach, Christoph
Esther Keller
Keller, Barbara
Spaak, Piet
Wolinska, Justyna
External DOI
PHSG Organisation name
Project(s)
Keinem PHSG-Projekt zugeordnet
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All rights reserved
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metadata only (bibliographisch)
Topic PHSG
Mathematische, Naturwissenschaftliche und Technische Bildung
Subjects
Fields of Science and Technology (OECD)
Natural sciences
Abstract
According to the Red Queen hypothesis, clonal diversity in asexual populations could be maintained by negative frequency-dependant selection by coevolving parasites. If common clones are selected against and rare clones gain a concomitant advantage, we expect that clonal turnover should be faster during parasite epidemics than between them. We tested this hypothesis exploring field data of the Daphnia–Caullerya host–parasite system. The clonal make-up and turnover of the Daphnia host population was tracked with high temporal resolution from 1998 until 2013, using first allozyme and later microsatellite markers. Significant differences in the clonal composition between random and infected subsamples of Daphnia populations were detected on six of seven tested occasions, confirming genetic specificity of the host–parasite interaction in this system. We used time series analysis to compare the rates of host clonal turnover to the incidence of parasitism, and found that Caullerya prevalence was significantly associated with microsatellite-based clonal turnover. As alternate hypotheses, we further tested whether turnover was related to a variety of biotic, abiotic, and host demographic parameters. Other significant correlates of turnover were cyanobacterial biomass and (weakly) temperature. Overall, parasitism seems to be a strong driver of host clonal turnover, in support of the Red Queen hypothesis.
Additional Information
Publikation erschien im Rahmen der beiden Projekte Swiss National Science Foundation. Grant Numbers: 310030L 135750, 310030L 166628; German Science Foundation. Grant Numbers: WO 1587/3-1, WO 1587/6-1
PHSG Organisation name
Project(s)
Keinem PHSG-Projekt zugeordnet
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metadata only (bibliographisch)
License Condition
All rights reserved
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