ArticlePloS one2012
Quorum sensing and density-dependent dispersal in an aquatic model system.
Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 40 citations in OpenAlex.
- Voices of Eukaryotic Microbes: Chemical Communication Via Quorum Sensing.Microbial ecology · 2026Review
- Density-dependent dispersal promotes female-biased sex allocation in viscous populations.Biology letters · 2022Article
- Population density, bottom-up and top-down control as an interactive triplet to trigger dispersal.Scientific reports · 2022Article
- Population viscosity promotes altruism under density-dependent dispersal.Proceedings. Biological sciences · 2022Article
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- Endogenous physical regulation of population density in the freshwater protozoan Paramecium caudatum.Scientific reports · 2017Article
- Insights into three whole-genome duplications gleaned from the Paramecium caudatum genome sequence.Genetics · 2014Article
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- Local density and group size interacts with age and sex to determine direction and rate of social dispersal in a polygynous mammal.Ecology and evolution · 2013Article
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Corrections and comments
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Many organisms use cues to decide whether to disperse or not, especially those related to the composition of their environment. Dispersal hence sometimes depends on population density, which can be important for the dynamics and evolution of sub-divided populations. But very little is known about the factors that organisms use to inform their dispersal decision. We investigated the cues underlying density-dependent dispersal in inter-connected microcosms of the freshwater protozoan Paramecium caudatum. In two experiments, we manipulated (i) the number of cells per microcosm and (ii) the origin of their culture medium (supernatant from high- or low-density populations). We found a negative relationship between population density and rates of dispersal, suggesting the use of physical cues. There was no significant effect of culture medium origin on dispersal and thus no support for chemical cues usage. These results suggest that the perception of density - and as a result, the decision to disperse - in this organism can be based on physical factors. This type of quorum sensing may be an adaptation optimizing small scale monitoring of the environment and swarm formation in open water.
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