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Convection
Convection
is the movement of fluids that aids conduction (Schmidt-Nielsen,
1997). For bees, convection is a necessary component of the counter
current heat exchange which a method that bees rely on heavily
for thermoregulation. Since air is considered a fluid when considering
convection, the transfer of heat to the air is also another method
of convection used by bees. Most of a bee's body is covered with
a thick layer of pile which helps retard the loss of heat to the
air by convection. But the underside of a bee's abdomen is bare.
This area allows convection to take place more quickly so that a
bee can lose heat when it needs to (Heinrich, 1976).
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photo used with permission, Copyright 2000, David
L. Green, www.pollinator.com
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