Individual behavioral rules sustain the cell allocation pattern in the combs of honey bee colonies (Apis mellifera)

TL;DR

This study investigates how individual behavioral rules in honey bees sustain the spatial pattern of brood, pollen, and honey cells in combs, proposing new rules and strategies to improve pattern stability over time.

Contribution

The paper introduces biologically realistic behavioral rules and global movement biases that better maintain comb cell patterns compared to previous models.

Findings

New rules improve pattern retention over time.

Global bias towards the comb center enhances stability.

Pattern stability depends on local and global behavioral factors.

Abstract

In the beeswax combs of honey bees, the cells of brood, pollen, and honey have a consistent spatial pattern that is sustained throughout the life of a colony. This spatial pattern is believed to emerge from simple behavioral rules that specify how the queen moves, where foragers deposit honey/pollen and how honey/pollen is consumed from cells. Prior work has shown that a set of such rules can explain the formation of the allocation pattern starting from an empty comb. We show that these rules cannot maintain the pattern once the brood start to vacate their cells, and we propose new, biologically realistic rules that better sustain the observed allocation pattern. We analyze the three resulting models by performing hundreds of simulation runs over many gestational periods and a wide range of parameter values. We develop new metrics for pattern assessment and employ them in analyzing pattern retention over each simulation run. Applied to our simulation results, these metrics show alteration of an accepted model for honey/pollen consumption based on local information can stabilize the cell allocation pattern over time. We also show that adding global information, by biasing the queen's movements towards the center of the comb, expands the parameter regime over which pattern retention occurs.