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Science Quickly

Bees Use 'Bullshit' Defense to Keep Giant Hornets at Bay

Science Quickly

Scientific American

Science

4.31.4K Ratings

🗓️ 11 January 2021

⏱️ 5 minutes

🧾️ Download transcript

Summary

The prospect of death by giant hornet has pushed some Asian honeybees to resort to a poop-based defense system

Transcript

Click on a timestamp to play from that location

0:00.0

This is Scientific Americans 60 Second Science.

0:05.0

I'm Jason Goldman.

0:07.0

And they'll basically crush or pop the head off of any worker who tries to attack them.

0:17.0

If you're a honeybee, a hornet attack could be the last thing you ever experience.

0:24.0

It's a gory, violent process, and honey bees have had to adapt to stay alive.

0:30.0

You've probably heard of those murder hornets that recently turned up in North America.

0:36.0

This is not a story about those.

0:38.5

This research takes us east to meet their cousins.

0:42.0

Wellesley College biologist Heather Madala went to Vietnam

0:46.3

to understand how Asian honey bees defend themselves from the Hornets there.

0:50.3

And in Vietnam that's the giant hornet of esposaur.

0:55.1

Typically, when a hornet invades an Asian honeybee hive, hundreds of bees surround

1:00.6

the intruder and create what's called a heatball. With the hornet caught in the center,

1:06.0

the heat goes up and the oxygen goes down. The bees literally cook and choke the hornet to death. But Vespasaurer has figured out a way to avoid this trap.

1:16.9

Giant hornets will hunt honey bees on their own and grab them one by one. But what is really lethal to honey bees is when they flip into a multiple

1:27.5

hornet attack strategy. And when they do this, they essentially want to kill all the adult defenders so that the colony is no longer

1:36.7

protected. But in the face of this deadly bum rush, Asian honeybees have resorted to the scatological.

1:43.8

And a lot of the beekeepers hadn't noticed them,

1:46.3

or if they had, they didn't know what they were.

1:48.3

But there was a handful of beekeepers who had seen these spots.

1:53.2

Those spots, it turned out, were poop.

1:56.7

The Hive's decision to dip into the dung pile

...

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