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Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Parasite transmission in a natural multihost-multiparasite community
Author(s): Auld, Stuart K J R
Searle, Catherine L
Duffy, Meghan A
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Keywords: Host-parasite interactions
virulence evolution
Issue Date: 5-May-2017
Citation: Auld SKJR, Searle CL & Duffy MA (2017) Parasite transmission in a natural multihost-multiparasite community, Philosophical Transactions B: Biological Sciences, 372 (1719), Art. No.: 20160097.
Abstract: Understanding the transmission and dynamics of infectious diseases in natural communities requires understanding the extent to which the ecology, evolution and epidemiology of those diseases are shaped by alternative hosts. We performed laboratory experiments to test how parasite spillover affected traits associated with transmission in two co-occurring parasites: the bacterium Pasteuria ramosa and the fungus Metschnikowia bicuspidata. Both parasites were capable of transmission from the reservoir host (Daphnia dentifera) to the spillover host (Ceriodaphnia dubia), but this occurred at a much higher rate for the fungus than the bacterium. We quantified transmission potential by combining information on parasite transmission and growth rate, and used this to compare parasite fitness in the two host species. For both parasites, transmission potential was lower in the spillover host. For the bacterium, virulence was higher in the spillover host. Transmission back to the original host was high for both parasites, with spillover influencing transmission rate of the fungus but not the bacterium. Thus, whilst inferior, the spillover host is not a dead-end for either parasite. Overall, our results demonstrate that the presence of multiple hosts in a community can have important consequences for disease transmission and host and parasite fitness.
DOI Link: 10.1098/rstb.2016.0097
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Publisher policy allows this work to be made available in this repository. Published in Philosophical Transactions of the Royal Society B: Biological Sciences, 5 May 2017, Volume 372, issue 1719 by the Royal Society. The original publication is available at:

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