Growth produces coordination trade-offs in Trichoplax adhaerens, an animal lacking a central nervous system - Archive ouverte HAL Access content directly
Journal Articles Proceedings of the National Academy of Sciences of the United States of America Year : 2023

Growth produces coordination trade-offs in Trichoplax adhaerens, an animal lacking a central nervous system

Abstract

How collectives remain coordinated as they grow in size is a fundamental challenge affecting systems ranging from biofilms to governments. This challenge is particularly apparent in multicellular organisms, where coordination among a vast number of cells is vital for coherent animal behavior. However, the earliest multicellular organisms were decentralized, with indeterminate sizes and morphologies, as exemplified by Trichoplax adhaerens , arguably the earliest-diverged and simplest motile animal. We investigated coordination among cells in T. adhaerens by observing the degree of collective order in locomotion across animals of differing sizes and found that larger individuals exhibit increasingly disordered locomotion. We reproduced this effect of size on order through a simulation model of active elastic cellular sheets and demonstrate that this relationship is best recapitulated across all body sizes when the simulation parameters are tuned to a critical point in the parameter space. We quantify the trade-off between increasing size and coordination in a multicellular animal with a decentralized anatomy that shows evidence of criticality and hypothesize as to the implications of this on the evolution hierarchical structures such as nervous systems in larger organisms.
Fichier principal
Vignette du fichier
davidescu+al_23.pdf (7.49 Mo) Télécharger le fichier
Origin : Publication funded by an institution
Licence : CC BY - Attribution

Dates and versions

pasteur-04027931 , version 1 (14-03-2023)

Licence

Attribution - CC BY 4.0

Identifiers

Cite

Mircea R Davidescu, Pawel Romanczuk, Thomas Gregor, Iain D. Couzin. Growth produces coordination trade-offs in Trichoplax adhaerens, an animal lacking a central nervous system. Proceedings of the National Academy of Sciences of the United States of America, 2023, 120 (11), pp.e2206163120. ⟨10.1073/pnas.2206163120⟩. ⟨pasteur-04027931⟩

Collections

PASTEUR CNRS
0 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More