Bees

Bees belong to the third largest insect order which also includes wasps and ants. The bee's eyes, like those of other insects, differ greatly from human eyes. They consist of a pair of compound eyes made up of numerous six-sided facets (28,000 in some dragonflies, 4,000 in house flies) plus three simple eyes. Despite this, their vision is believed to be sharp only for a distance of about 1 m.


 Bees, however, are capable of seeing ultraviolet light, which is invisible to humans. The bee is capable of navigating, even on a cloudy day, by cloud-penetrating ultraviolet light. Honey bees also use the sun as a reference point to communicate to other bees the angle of flight to be followed to arrive at newly discovered nectar-bearing flowers. 


Bees are in danger of disappearing from our environment. Farming practices continue to disturb the natural habitats and forage of solitary and bumblebees at a rate which gives them little chance for re-establishment. The honeybee is under attack from the varroa mite and it is only the treatment and care provided by beekeepers that is keeping colonies alive. Most wild honeybee colonies have died out as a result of this disease.

Bees belong to the same order as wasps.
 

Like wasps, bees have mouth parts with a tongue longer than the wasps better suited for gathering nectar from a greater variety of flowers. Bees have feathery body hairs, also known as plumose. Females have brushes on their legs, and they use them to remove pollen that sticks to these body hairs. The pollen is then stored under the abdomen or on the hind legs.

 Bees are subdivided into several families on the basis of how their wings are veined, and other criteria. There are many unique species of bees, with some living below ground, and a few that even eat wood. One of the most fascinating bees, the giant Indian bee (Apis dorsata) builds a single comb as large as 5' by 3' attached to rocks, trees or buildings.

 Bees are very hard working creatures with a very rigid social order. Colonies kept in hives yield an average of 50 pounds of honey for the beekeeper. Unlike other bees, honeybees do not hibernate during cold weather.

Bees are world-class navigators. Honeybees communicate direction and distance from the hive to nectar sources through a sophisticated dance "language". In 1973, Karl von Frisch received a Nobel Prize for deciphering this bee language, which consists of a circle dance and a tail wagging dance.

 It accurately tells other bees the angle from the sun and the distance to the nectar. Bees use the sun as a compass. Even when the sun is obscured by clouds, bees can detect it's position from the light in brighter patches of the sky. Bees also can see ultraviolet designs in flowers like an airplane circling an airport sees the landing lights on a runway. Honeybees also have a built-in clock that appears to be synchronized with the secretion of nectar from flowers.

 
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Friday  10 February  2012

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