Skip to Main content Skip to Navigation
Journal articles

Eco-evolutionary significance of “loners”

Abstract : Loners-individuals out of sync with a coordinated majority-occur frequently in nature. Are loners incidental byproducts of large-scale coordination attempts, or are they part of a mosaic of life-history strategies? Here, we provide empirical evidence of naturally occurring heritable variation in loner behavior in the model social amoeba Dictyostelium discoideum. We propose that Dictyostelium loners-cells that do not join the multicellular life stagearise from a dynamic population-partitioning process, the result of each cell making a stochastic, signal-based decision. We find evidence that this imperfectly synchronized multicellular development is affected by both abiotic (environmental porosity) and biotic (signaling) factors. Finally, we predict theoretically that when a pair of strains differing in their partitioning behavior coaggregate, cross-signaling impacts slime-mold diversity across spatiotemporal scales. Our findings suggest that loners could be critical to understanding collective and social behaviors, multicellular development, and ecological dynamics in D. discoideum. More broadly, across taxa, imperfect coordination of collective behaviors might be adaptive by enabling diversification of life-history strategies.
Complete list of metadata

https://hal-pasteur.archives-ouvertes.fr/pasteur-03216299
Contributor : Thomas Gregor <>
Submitted on : Monday, May 3, 2021 - 9:40:46 PM
Last modification on : Wednesday, May 5, 2021 - 10:49:24 AM

File

rossine_al_20.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Fernando Rossine, Ricardo Martinez-Garcia, Allyson Sgro, Thomas Gregor, Corina Tarnita. Eco-evolutionary significance of “loners”. PLoS Biology, Public Library of Science, 2020, 18, ⟨10.1371/journal.pbio.3000642⟩. ⟨pasteur-03216299⟩

Share

Metrics

Record views

15

Files downloads

21