Journal
BIOLOGY LETTERS
Volume 7, Issue 3, Pages 327-329Publisher
ROYAL SOC
DOI: 10.1098/rsbl.2010.0862
Keywords
dispersal; infection; microcosm
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Funding
- French Agence National de Recherche [ANR-09-BLAN-0099, ANR-09-PEXT-01102]
- Agence Nationale de la Recherche (ANR) [ANR-09-BLAN-0099] Funding Source: Agence Nationale de la Recherche (ANR)
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Parasitic infection can modify host mobility and consequently their dispersal capacity. We experimentally investigated this idea using the ciliate Paramecium caudatum and its bacterial parasite Holospora undulata. We compared the short-distance dispersal of infected and uninfected populations in interconnected microcosms. Infection reduced the proportion of hosts dispersing, with levels differing among host clones. Host populations with higher densities showed lower dispersal, possibly owing to social aggregation behaviour. Parasite isolates that depleted host populations most had the lowest impact on host dispersal. Parasite-induced modification of dispersal may have consequences for the spatial distribution of disease, host and parasite genetic population structure, and coevolution.
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