The thermology of wintering honey bee colonies
Here is data that is very detailed about the clustering of bees:
THE THERMOLOGY OF WINTERING HONEY BEE COLONIES
By CHARLES D. OWENS, Agricultural Engineering Research Division,
Agricultural Research Service
All tests were conducted at Madison, Wis., from December 1 to March 31 for 5 years.
Thermocouples were established in different planes in a hive of wintering honey bees (Apis mellifera L.) at Madison, Wis., and temperatures were determined. Then the colony was killed with gas. Exact determination of the cluster location in relation to recorded temperatures proved that such temperature records precisely locate the cluster and show where brood is being reared, where bee activity occurs beyond the brood area, and the insulating shell of relatively inactive bees.
From 1,200,000 thermocouple temperature determinations made in beehives during the winter, the following information was obtained:
(1 of 20)
(1) Temperature readings permit determination of the cluster size, shape, movement, and brood-rearing activities.
More great stuff on hive thermoregulation
http://www.pnas.org/content/100/12/7343.full.pdf Must read!!
Fascinating stuff. Brood nest temperatures can have huge impacts on memory and learning. The results for brood reared at cooler temps in that last study are reminiscent of some of the CCD symptoms. Perhaps as field and cluster heater bees are lost the developing larvae become less able to learn and remember thus compounding the situation.
Brood nest temperatures can have huge impacts
Thanks for the excellent data.
I will read it in detail later today.
I thought that the movement of the wintering cluster was also of interest and the hives brooding charts.
Queen Rearing and Brood temperature.
A nice warm brood temperature should also have a direct influenc on the quality of a queen too!
So how many milligrams of honey does it take for a worker to generate that 107.5 degrees?
I would wager some equation could be developed to calculate how much honey per unit of time, a given brood volume would require, perhaps on a per bee basis. Of taking into consideration the R values of combs, wax, and such. Where are the math physics bee geeks? My old college physics book is very dusty.