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Phenotypic variability predicts decision accuracy in unicellular organisms
Toulouse Univ, CNRS, Res Ctr Anim Cognit CRCA, Ctr Integrat Biol CBI,UPS, F-31062 Toulouse, France.ORCID-id: 0000-0002-1377-3550
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Matematisk-datavetenskapliga sektionen, Matematiska institutionen.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Matematisk-datavetenskapliga sektionen, Matematiska institutionen, Tillämpad matematik och statistik.ORCID-id: 0000-0002-1436-9103
2019 (engelsk)Inngår i: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 286, nr 1896, artikkel-id 20182825Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

When deciding between different options, animals including humans face the dilemma that fast decisions tend to be erroneous, whereas accurate decisions tend to be relatively slow. Recently, it has been suggested that differences in the efficacy with which animals make a decision relate closely to individual behavioural differences. In this paper, we tested this hypothesis in a unique unicellular organism, the slime mould Physarum polycephalum. We first confirmed that slime moulds differed consistently in their exploratory behaviour from 'fast' to 'slow' explorers. Second, we showed that slow explorers made more accurate decisions than fast explorers. Third, we demonstrated that slime moulds integrated food cues in time and achieved higher accuracy when sampling time was longer. Lastly, we showed that in a competition context, fast explorers excelled when a single food source was offered, while slow explorers excelled when two food sources varying in quality were offered. Our results revealed that individual differences in accuracy were partly driven by differences in exploratory behaviour. These findings support the hypothesis that decision-making abilities are associated with behavioural types, even in unicellular organisms.

sted, utgiver, år, opplag, sider
2019. Vol. 286, nr 1896, artikkel-id 20182825
Emneord [en]
speed - accuracy trade-off, individual differences, decision-making, slime moulds, Physarum polycephalum, drift-diffusion model
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Identifikatorer
URN: urn:nbn:se:uu:diva-383888DOI: 10.1098/rspb.2018.2825ISI: 000465431000021PubMedID: 30963918OAI: oai:DiVA.org:uu-383888DiVA, id: diva2:1318976
Forskningsfinansiär
EU, European Research Council, IDCAB 220/104702003Tilgjengelig fra: 2019-05-29 Laget: 2019-05-29 Sist oppdatert: 2019-05-29bibliografisk kontrollert

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