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Making a bee-line for the best rewards

Date:
August 21, 2011
Source:
Queen Mary, University of London
Summary:
Bumble bees use complex problem-solving skills to minimize the energy they use when flying to collect food, according to new research.

Bumblebee. Bumblebees use complex problem solving skills to minimise the energy they use when flying to collect food.
Credit: Henryk Olszewski / Fotolia

Bumblebees use complex problem solving skills to minimise the energy they use when flying to collect food, according to new research from Queen Mary, University of London.

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For the bumblebee (Bombus terrestris), as with many other animals, the simplest approach to finding more nectar would be to fly to the nearest neighbouring flower, particularly considering their tiny brain size. But a team from Queen Mary's School of Biological and Chemical Sciences has found that this isn't the case.

The research team arranged six artificial flowers in a flight arena so that the bees would have to follow an unnecessarily long route when flying between nearest neighbour flowers to collect nectar. They watched the bees as they carried out 80 foraging bouts, and recorded which flowers they visited and in which order.

Writing in the journal Biology Letters, Dr Mathieu Lihoreau and colleagues report how, over 640 flower visits, the bees significantly reduced their flight distances as they learned the position of each flower within the array. Surprisingly, the bees almost never followed a nearest-neighbour strategy (in which the bee would fly to the nearest unvisited flower until all flowers are visited). Instead they prioritised following the shortest possible route by learning and memorising individual flower locations.

The team's findings suggest that bees are able to solve complex routing problems by learning, without needing a sophisticated cognitive representation of space. Dr Lihoreau explained: "Despite having tiny brains, bees effectively used gradual optimisation (comparing several different routes), to solve this famously complex routing problem which still baffles mathematicians 80 years after it was first posed."


Story Source:

The above story is based on materials provided by Queen Mary, University of London. Note: Materials may be edited for content and length.


Journal Reference:

  1. M. Lihoreau, L. Chittka, S. C. Le Comber, N. E. Raine. Bees do not use nearest-neighbour rules for optimization of multi-location routes. Biology Letters, 2011; DOI: 10.1098/rsbl.2011.0661

Cite This Page:

Queen Mary, University of London. "Making a bee-line for the best rewards." ScienceDaily. ScienceDaily, 21 August 2011. <www.sciencedaily.com/releases/2011/08/110817022621.htm>.
Queen Mary, University of London. (2011, August 21). Making a bee-line for the best rewards. ScienceDaily. Retrieved October 24, 2014 from www.sciencedaily.com/releases/2011/08/110817022621.htm
Queen Mary, University of London. "Making a bee-line for the best rewards." ScienceDaily. www.sciencedaily.com/releases/2011/08/110817022621.htm (accessed October 24, 2014).

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