Evolution of specialized microbial cooperation in dynamic fluids. (11th February 2020)

• Record Type: Journal Article
• Authors: Uppal, Gurdip; Vural, Dervis Can
• Is Part Of: Journal of evolutionary biology. Volume 33:Number 3(2020)
• Page Start: 256
• Page End: 269
• Publication Date: 2020-02-11
• Subjects: evolution of co‐operation -- microbes -- natural selection -- population genetics -- simulation -- theory -- trade‐offs; Evolution (Biology) -- Periodicals; Biology -- Periodicals; 576.8
• DOI: 10.1111/jeb.13593
• Languages: English
• ISSNs: 1010-061X

Abstract

Abstract: Here, we study the evolution of specialization using realistic computer simulations of bacteria that secrete two public goods in a dynamic fluid. Through this first‐principles approach, we find physical factors such as diffusion, flow patterns and decay rates are as influential as fitness economics in governing the evolution of community structure, to the extent that when mechanical factors are taken into account, (a) generalist communities can resist becoming specialists despite the invasion fitness of specialization; (b) generalist and specialists can both resist cheaters despite the invasion fitness of free‐riding; and (c) multiple community structures can coexist despite the opposing force of competitive exclusion. Our results emphasize the role of spatial assortment and physical forces on niche partitioning and the evolution of diverse community structures. Abstract : Microbes cooperate by secreting specialized diffusive factors. Here, we study the evolution of specialized cooperation taking place in a fluid environment and find that physical factors such as diffusion, flow patterns and decay rates are as influential as fitness economics in governing the evolution of community interactions.