DEC 10, 2020 3:05 PM PST

The Surprising Way Honeybees Protect Hives from Hornets

WRITTEN BY: Tiffany Dazet

"Murder hornets," more commonly known as giant hornets, might be new to North America, but in their native range, they've always been feared by prey. According to Science Magazine, these hornets reach 4.5 centimeters in length and can chew off a honeybee head in a single bite. Additionally, the hornets cooperate in packs to invade and feast upon hives.

Honeybees, however, have developed a unique defense response to these invasions. New research from the University of Guelph reveals that honeybees defend their hives from these voracious predators using feces from other animals.

According to an article from U of G, honeybees collect animal dung and apply it to their hives' entrances to repel hornets. Prior research and information from beekeepers noted that dark spots would appear on hives when giant hornets arrived nearby. Beekeepers also reported observing bees collecting water buffalo dung. To confirm if the bees were placing animal dung on their hives, researchers placed water buffalo, cow, chicken, and pig dung in mounds near the beehives and observed. According to U of G, in one day, researchers observed 150 bees visiting the dung mounds, notably those with more potent odors.

Lead researcher Heather Mattila told Science Magazine, "it just floored me," due to her knowledge of the hygienic behaviors employed by bees to keep their hives clean. She continues, "The thought of honeybees walking around in feces is just shocking."

According to the study, hornets spent less than half as much time at hives with moderate to heavy dung spotting than those with just a few spots. Additionally, mass attacks were less likely on heavily dung spotted hives. Although researchers cannot pinpoint the exact mechanism of why the dung repels hornets, they assume it is the strong odor or that the dung masks the honeybees' odors.

Whether this behavior can officially be considered tool-use is still a debate. According to U of G professor and study author Gard Otis, bees are clearly using an object from their surrounding environment to alter their hive with an intended purpose. He added that because the bees shape and mold the dung spots with their mouths, they meet the criteria for holding and manipulating a tool.

Sources: Science Magazine, University of Guelph

About the Author
  • Tiffany grew up in Southern California, where she attended San Diego State University. She graduated with a degree in Biology with a marine emphasis, thanks to her love of the ocean and wildlife. With 13 years of science writing under her belt, she now works as a freelance writer in the Pacific Northwest.
You May Also Like
AUG 12, 2020
Chemistry & Physics
Ammonium Nitrate the Nitrogen-Rich Compound Behind the Mega Blast in Beirut
AUG 12, 2020
Ammonium Nitrate the Nitrogen-Rich Compound Behind the Mega Blast in Beirut
Last Tuesday, twin explosions ruptured the sky of Beirut, the Lebanese capital city. The second blast's shockwave wa ...
SEP 16, 2020
Plants & Animals
The World is Failing to Save Biodiversity
SEP 16, 2020
The World is Failing to Save Biodiversity
Earlier this week, the UN Convention on Biological Diversity (CBD) released the Global Biodiversity Outlook 5 (GBO- ...
OCT 25, 2020
Neuroscience
Chimps Shift to Reciprocated Friendships with Age
OCT 25, 2020
Chimps Shift to Reciprocated Friendships with Age
Image: Pixabay   Researchers studying aging male chimpanzee relationships have gathered evidence that chimps narrow ...
NOV 04, 2020
Plants & Animals
Scientists Rediscover "Lost" Chameleon Species in Madagascar
NOV 04, 2020
Scientists Rediscover "Lost" Chameleon Species in Madagascar
Voeltzkow’s chameleon was recently rediscovered after disappearing for more than 100 years. According to an articl ...
NOV 12, 2020
Plants & Animals
Noise Pollution Threatens Norway's Orcas
NOV 12, 2020
Noise Pollution Threatens Norway's Orcas
Orca pods heavily depend on vocal communication for survival. Their unique ability to communicate with other pod members ...
JAN 13, 2021
Plants & Animals
Dwarf Giraffes Observed for the First Time Ever
JAN 13, 2021
Dwarf Giraffes Observed for the First Time Ever
The name “dwarf giraffe” certainly seems like an oxymoron, which is why scientists were shocked to observe t ...
Loading Comments...