Patterns of self-organization in ants

Patterns of self-organization in ants

Bifurcation - instant transition of whole system to a new stable pattern when a threshold is reached. Also known as multi-stability in which many stable states are possible.

Examples of pattern types –
# Transition between disordered and ordered pattern
# Transition from an even use of many food sources to one source
# Formation of branched nest galleries
# Group preference of one exit by escaping ants
# Chain formation of mutual leg grasping

Synchronization – oscillating patterns of activity in which individuals at different activity levels stimulate one anther emerging from mutual activation.

Examples of pattern types
# Short scale rhythms arising from mechanical activation from physical contact
# Long scale rhythms in which temporal changes in food needs and larvae stimulate changes in the reproductive cycle

Self organized waves – traveling waves of chemical concentration or mechanical deformation

Examples of pattern types
# Alarm waves propagated by physical contact
# Rotating trails from spatial changes in food resources acting on trail laying activity

Self-organized criticality – abrupt disturbances in a system resulting from a build up of events without external stimuli

Examples of pattern types
#Abrupt changes in feeding activity
#Mechanical grasping of legs forming ant droplets [Detrain, C., and J. L. Deneubourg. 2006. " [http://www.ulb.ac.be/sciences/use/publications/JLD/221.pdf Self-Organized Structures in a Superorganism: Do Ants "Behave" Like Molecules?] " "Physics of Life Reviews" (ISSN|1571-0645). 3, no. 3: 162-187.]

References


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