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Science Quickly

Cricket Avoids Being Bat Food by Doing Nothing

Science Quickly

Scientific American

Science

4.2639 Ratings

🗓️ 22 July 2020

⏱️ 4 minutes

🧾️ Download transcript

Summary

The sword-tailed cricket can discern bats’ echolocation signals by only responding to calls of a certain volume—at which point it plummets out of their approach. Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0

Understanding the human body is a team effort. That's where the Yachtel group comes in.

0:05.8

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years. Yacold also

0:11.5

partners with nature portfolio to advance gut microbiome science through the global grants for

0:16.6

gut health, an investigator-led research program. To learn more about Yachtold, visit yawcult.co.j

0:23.9

That's Y-A-K-U-L-T-C-O-J-P. When it comes to a guide for your gut, count on Yacult.

0:33.8

This is Scientific American 60-second science. I'm Emily Schweng.

0:42.5

So what you're listening to now, that's a recording from the rainforest.

0:48.8

That's Mark Holder-Reed, the University of Bristol in the UK. He specializes in bioacoustics, how animals produce sound and communicate with the sounds they make. In the recording you just listened to, Holderid removed the sounds we humans can hear and reduce the frequencies of the sounds we normally wouldn't hear so that they're audible to our ears.

1:15.3

Rainforest is a very noisy environment. There are insect sounds, bird sounds, there's leaves rustling,

1:21.5

and all of this makes it harder for you to detect something you want to hear.

1:25.6

Holderid is particularly interested in sounds from the ultrasonic range.

1:30.1

These are frequencies our ears can't detect.

1:32.7

But they come in loud and clear for a sword-tailed cricket in Panama.

1:37.2

Here's their habitat, slowed down so we can hear it.

1:42.7

Holderid and colleagues at the universities of Bristol and Graz in Austria recently discovered

1:48.5

the Swartail Cricket has a novel survival strategy when it comes to their life in this noisy

1:54.5

environment.

1:55.5

But up there, it's mainly other insects that produce noises that stop you from detecting what you really want to

2:02.4

detect, and that is a creditor that might attack you.

2:04.9

Every night, hundreds of species of hungry bats fly around the rainforest and use

2:09.9

echolocation to hunt for their meals, which can include the cricket.

2:14.2

So we are talking neotropical rainforests and they team with different

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