Synopsis: Lévy Flight of the Bumblebee

Bumblebee flight patterns reveal how the presence of spiders causes bees to modify their foraging strategies.

Bumblebees visit flowers to collect nectar, often visiting multiple flowers in a single patch. Mathematically, a bee’s path has been described by a Lévy flight, which gives flights over long distances a larger weight than in an ordinary random walk model. This description is controversial, however, as bumblebees in the wild are under the constant risk of predators, such as spiders, which likely modifies their foraging behavior.

Writing in Physical Review Letters, Friedrich Lenz at Queen Mary, University of London, UK, and colleagues present a statistical analysis of the velocity distribution of bumblebees. They draw from experiments that track real bumblebees visiting replenishing nectar sources under threat from “artificial spiders,” which can be simulated with a trapping mechanism that holds the bumblebee for two seconds. The team finds that in the absence of spiders, the bumblebees forage more systematically and go directly from flower to flower. When predators are present, however, the bumblebees turn around more often, highlighting a more careful approach to avoid spiders. The analysis indicates that for real foraging, factors such as bumblebee sensory perception, memory, and daylight cycles must also be taken into account in addition to the presence of predators, all of which may cause cause deviation from a Lévy flight pattern. – Daniel Ucko


More Features »


More Announcements »

Subject Areas

Nonlinear DynamicsBiological PhysicsStatistical Physics

Previous Synopsis

Quantum Physics

Quantum Pistons

Read More »

Next Synopsis


Electron Bounce

Read More »

Related Articles

Focus: Finding the Ideal Noise-Reducing Network
Statistical Physics

Focus: Finding the Ideal Noise-Reducing Network

The structure of a network, such as an electricity grid, can be optimized to reduce the effects of fluctuations in the network’s inputs. Read More »

Synopsis: Pinning down the Chemistry of Photosynthetic Water Splitting  
Biological Physics

Synopsis: Pinning down the Chemistry of Photosynthetic Water Splitting  

A time-resolved x-ray study indicates that certain chemical changes of oxygen atoms during photosynthesis occur in a different order than current models predict. Read More »

Synopsis: Second Law in an Optical Cavity and a BEC
Atomic and Molecular Physics

Synopsis: Second Law in an Optical Cavity and a BEC

Physicists observe entropy production in two intermediate-scale quantum systems, indicating that the systems have undergone an irreversible process.   Read More »

More Articles