ミツバチのダンス精度は観察者に依存（Bee Dancing is Better with the Right Audience）

2026-03-23 カリフォルニア大学サンディエゴ校(UCSD)

A dancing honey bee (center) is surrounded by an audience of “followers” that carefully interpret the movements of the ultra-fast ‘waggle’ dance. Credit: Heather Broccard Bell

＜関連情報＞

• https://today.ucsd.edu/story/bee-dancing-is-better-with-the-right-audience
• https://www.pnas.org/doi/10.1073/pnas.2518687123
• https://medibio.tiisys.com/107806/

観客がミツバチの尻振りダンスの情報内容を形作る The audience shapes the information content of the honey bee waggle dance

Tao Lin, Shihao Dong, Gaoying Gu, +7 , and Ken Tan
Proceedings of the National Academy of Sciences  Published:March 23, 2026
DOI:https://doi.org/10.1073/pnas.2518687123

Significance

We show that the honey bee waggle dance changes depending on how many followers a dancer has and how many appropriately aged bees are available to follow it. When followers were scarce, dancers became less precise, even if the dance floor was crowded with young bees that do not follow dances. These declines in precision appear to arise because dancers search more widely for an audience, increasing their movement during the return run. The results suggest that dancers use simple social cues, such as tactile contacts, to sense follower availability. Thus, waggle dancing is not a one-way signal but a socially responsive behavior shaped by feedback from followers.

Abstract

The honey bee waggle dance, which encodes food location, is often thought to involve only one-way information transfer from dancers to signal receivers. Here, we show that the information content of the dance is influenced by the presence of followers and the number of appropriately aged potential followers in the hive, rather than the total number of bees on the dance floor. Dancers reduced the precision of directional and distance communication when they had fewer actual and potential followers. Even when the dance floor was crowded with young bees that do not follow dances, dancers showed the same declines in precision. These declines appear to arise as a byproduct of audience seeking during the return run, when dancers with fewer followers spent more time moving and covered greater distances across the dance floor. Although their mean waggle run duration and the distance covered per waggle run remained unchanged, both measures became markedly more variable when followers were scarce. Dancers likely use quorum sensing of tactile contacts and, potentially, age-specific odors to sense audience size. These results reveal that waggle dancing is a socially responsive process shaped by feedback from followers, demonstrating bidirectional information flow within this communication system.