Monday, January 1, 2018

Honey Bee New Year

Honey bees are the only insect in the temperate zone that remain alive and active throughout the year. They are well-adapted to survive cold winters in which there is no food available outside the hive. Though insects are normally cold-blooded creatures, honey bees are able to regulate the temperature of their hive by generating heat themselves. They eat their stored honey, a high-energy food that they produced; and then they shiver their flight muscles to generate heat. The bees generating heat are loosely clustered together while a shell of tightly-packed bees surrounds their winter cluster, using their bodies to hold the heat. Whenever there is brood in the hive, the bees maintain a brood-nest temperature of 95 degrees Fahrenheit. The honey bees are able to conserve the precious honey reserves needed to warm the winter cluster by not making an effort to warm the entire hive. Distant corners of a bee hive may be quite cold. Further, the colony reduces its cluster heating requirement by forcing the queen to stop laying eggs in the late fall. With no brood to protect, the winter cluster will reduce its temperature to around 70 degrees, the equivalent of our turning down our home thermostats by 25 degrees!

While our calendar year begins on January 1, the honey bees’ year is well underway. The queen begins laying eggs, a few at a time, on the winter solstice, usually December 21. These first bees of the season will be available to start foraging dandelion nectar and pollen on warm days in February. However, the early start-up of brood rearing has its draw-backs. With brood in the hive, the bees must maintain a 95-degree temperature in the brood area. Also, the bees must cover the brood with their bodies instead of moving about the hive to feed on stored honey. Since honey bees never defecate inside the hive, on warm winter days, bees leave the hive, as in today’s photo, to make cleansing flights. Happy New Year!
--Richard

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