Featured Research

from universities, journals, and other organizations

How do bumblebees get predators to buzz off?

Date:
May 29, 2010
Source:
Royal Holloway, University of London
Summary:
Toxic or venomous animals, like bumblebees, are often brightly colored to tell would-be predators to keep away. However scientists in the UK have found a bumblebee's defense could extend further than its distinctive color pattern and may indeed be linked to their characteristic shape, flight pattern or buzzing sound.

Bumblebee close-up.
Credit: iStockphoto/Mehmed Zelkovic

Bumblebees' distinctive black and yellow "warning" colours may not be what protects them from flying predators researchers have found.

Toxic or venomous animals, like bumblebees, are often brightly coloured to tell would-be predators to keep away. However scientists at Royal Holloway, University of London and Queen Mary, University of London have found a bumblebee's defence could extend further than its distinctive colour pattern and may indeed be linked to their characteristic shape, flight pattern or buzzing sound. The study is published in the Journal of Zoology.

Dr Nigel Raine, from the School of Biological Sciences at Royal Holloway, explains: "The first time a bird eats a brightly coloured bumblebee it gets a nasty surprise. Remembering the bee's bright colours may help the bird to avoid making the same mistake again. We wanted to test the idea that bumblebee species in the same location converge on a similar appearance to enhance protection from local predators."

The team compared the loss rates of bumblebee populations with different colour patterns in the same environment -- in Sardinia, Germany and the UK. If the colour pattern is important, the researchers expected that predators would be more likely to eat bees which looked very different to those they had previously encountered in their local area. But this is not what they found.

"Predators didn't seem to target the unusually coloured bees from the non-native populations we tested. Perhaps the bumbling way in which all bumblebees fly, or their distinctive deep buzzing are more important clues to help would-be predators avoid a nasty sting," says Dr Raine.

Birds see the world very differently to humans, particularly their ability to see light in the ultraviolet range of the spectrum. The team compared the colour patterns of different bumblebee populations and showed that in addition to the bright bands we can see, the white tip of the bumblebee's tail is very obvious to birds as it reflects strongly in ultraviolet light. Such signals are also important to bees which detect ultraviolet markings on flowers which are invisible to us.

Dr Raine adds, "Although birds can tell the difference between the colour patterns of the different bee populations in our experiments, they probably find it hard to tell them apart in the fraction of a second when a bee flies past. Perhaps it's better for the bird to steer clear of all animals which look, sound, or fly like a bumblebee to avoid the danger of eating one."


Story Source:

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


Cite This Page:

Royal Holloway, University of London. "How do bumblebees get predators to buzz off?." ScienceDaily. ScienceDaily, 29 May 2010. <www.sciencedaily.com/releases/2010/05/100526093608.htm>.
Royal Holloway, University of London. (2010, May 29). How do bumblebees get predators to buzz off?. ScienceDaily. Retrieved August 22, 2014 from www.sciencedaily.com/releases/2010/05/100526093608.htm
Royal Holloway, University of London. "How do bumblebees get predators to buzz off?." ScienceDaily. www.sciencedaily.com/releases/2010/05/100526093608.htm (accessed August 22, 2014).

Share This




More Plants & Animals News

Friday, August 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Drug Used To Treat 'Ebola's Cousin' Shows Promise

Drug Used To Treat 'Ebola's Cousin' Shows Promise

Newsy (Aug. 21, 2014) — An experimental drug used to treat Marburg virus in rhesus monkeys could give new insight into a similar treatment for Ebola. Video provided by Newsy
Powered by NewsLook.com
Terrifying City-Dwelling Spiders Are Bigger And More Fertile

Terrifying City-Dwelling Spiders Are Bigger And More Fertile

Newsy (Aug. 21, 2014) — According to a new study, spiders that live in cities are bigger, fatter and multiply faster. Video provided by Newsy
Powered by NewsLook.com
Lost Brain Cells To Blame For Sleep Problems Among Seniors

Lost Brain Cells To Blame For Sleep Problems Among Seniors

Newsy (Aug. 21, 2014) — According to a new study, elderly people might have trouble sleeping because of the loss of a certain group of neurons in the brain. Video provided by Newsy
Powered by NewsLook.com
Ramen Health Risks: The Dark Side of the Noodle

Ramen Health Risks: The Dark Side of the Noodle

AP (Aug. 21, 2014) — South Koreans eat more instant ramen noodles per capita than anywhere else in the world. But American researchers say eating too much may increase the risk of diabetes, heart disease and stroke. (Aug. 21) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins