Author Topic: Bee Brains Hold Temp Steady to Slow Cook Wasps  (Read 871 times)

0 Members and 1 Guest are viewing this topic.

Offline Buster's Uncle

  • Upon the escalator I
  • Ascend
  • *
  • Posts: 47985
  • €1017
  • View Inventory
  • Send /Gift
  • Because there are times when people just need a cute puppy  Soft kitty, warm kitty, little ball of fur  Someone thinks a Winrar is You!  
  • AC2 is my instrument, my heart, as I play my song.
  • Planet tales writer Smilie Artist Custom Faction Modder AC2 Wiki contributor Downloads Contributor
    • View Profile
    • My Custom Factions
    • Awards
Bee Brains Hold Temp Steady to Slow Cook Wasps
« on: March 18, 2012, 04:55:27 PM »
Bee Brains Hold Temp Steady to Slow Cook Wasps
By Jennifer Welsh | – 43 mins ago...

The Japanese honeybee and the giant hornet are waging an epic war. The hornets, which can grow up to 1.6 inches (4 centimeters) long, attack the nests of the bees, and the honeybees will surround a hornet and "cook" it.
The honeybees' stingers can't penetrate a hornet's thick outer skin, so the bees swarm around an attacker instead, forming a spherical bee ball, and use their vibrating flight muscles to create heat. The mass of bees will heat the area up to 116 degrees Fahrenheit (47 degrees Celsius), enough to kill the hornet.
Scientists discovered these bee balls in 2005 and have been studying them ever since. Now researchers have figured out the bee-brain mechanism that regulates the thermo-balling behavior in Japanese honeybees but not in their relatives, the European honeybees.
The researchers plucked honeybees from the hot defensive bee ball at different times to see what parts of the brain were active. They found that cells in brain centers involved in complex behaviors were more active when in the hot ball than when the bees were carrying out other activities.
"It might be that the neurons located in this area are also involved in processing thermal information in the worker honeybees," the researchers wrote in the paper, published March 14 in the journal PLoS ONE.
This brain activation was also seen when the bees were exposed to heat, supporting the idea the brain region is sending out directions to keep the bees producing steady heat that's hot enough to kill the hornets, but not themselves. This neural activity wasn't seen in European honeybees.
"Because there is only 3 to 5 C difference [5 to 9 degrees F] in the lethal temperature between the Japanese honeybee and the giant hornet, accurate monitoring and precise control of heat generation during forming a hot defensive bee ball seem critical for the Japanese honeybees," they wrote.
These activated areas "might be involved in thermal information processing, to appropriately regulate the duration of flight muscle vibration and control heat generation during forming the bee ball."


* User

Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length

Select language:

* Community poll

SMAC v.4 SMAX v.2 (or previous versions)
23 (7%)
XP Compatibility patch
9 (3%)
Gog version for Windows
92 (30%)
Scient (unofficial) patch
39 (13%)
Kyrub's latest patch
14 (4%)
Yitzi's latest patch
87 (29%)
AC for Mac
2 (0%)
AC for Linux
6 (2%)
Gog version for Mac
10 (3%)
No patch
15 (5%)
Total Members Voted: 297
AC2 Wiki Logo
-click pic for wik-

* Random quote

If our society seems more nihilistic than that of previous eras, perhaps this is simply a sign of our maturity as a sentient species. As our collective consciousness expands beyond a crucial point, we are at last ready to accept life's fundamental truth: that life's only purpose is life itself.
~Chairman Sheng-ji Yang 'Looking God in the Eye'

* Select your theme