Vanishing honeybees mystify scientists

Read this article in the Washington Post
(comments in parenthesis are mine)

Washington-Go to work, come home. Go to work, come home. Go to work -- and vanish without a trace.
Billions of bees have done just that, leaving the crop fields they are supposed to pollinate, and scientists are mystified about why.
The phenomenon was first noticed late last year in the United States, where honeybees are used to pollinate $15 billion worth of fruits, nuts and other crops annually. Disappearing bees have also been reported in Europe and Brazil.

Commercial beekeepers would set their bees near a crop field as usual and come back in two or three weeks to find the hives bereft of foraging worker bees, with only the queen and the immature insects remaining. Whatever worker bees survived were often too weak to perform their tasks.
(The general public only cares when it begins to affect their pocketbook).

If the bees were dying of pesticide poisoning or freezing, their bodies would be expected to lie around the hive. And if they were absconding because of some threat -- which they have been known to do -- they wouldn't leave without the queen.
Since about one-third of the U.S. diet depends on pollination and most of that is performed by honeybees, this constitutes a serious problem, according to Jeff Pettis of the U.S. Agricultural Research Service.

"They're the heavy lifters of agriculture," Pettis said of honeybees. "And the reason they are is they're so mobile and we can rear them in large numbers and move them to a crop when it's blooming."

Honeybees are used to pollinate some of the tastiest parts of the American diet, Pettis said, including cherries, blueberries, apples, almonds, asparagus and macadamia nuts.
(I heard last summer that a mite was causing the declining population).

Pettis and other experts are gathering outside Washington for a two-day workshop starting on Monday to pool their knowledge and come up with a plan of action to combat what they call colony collapse disorder.

In some cases, beekeepers are losing 50 percent of their bees to the disorder, with some suffering even higher losses. One beekeeper alone lost 40,000 bees, Pettis said. Nationally, some 27 states have reported the disorder, with billions of bees simply gone.
Some beekeepers supplement their stocks with bees imported from Australia, said beekeeper Jeff Anderson, whose business keeps him and his bees traveling between Minnesota and California. Honeybee hives are rented out to growers to pollinate their crops, and beekeepers move around as the growing seasons change.

Honeybees are not the only pollinators whose numbers are dropping. Other animals that do this essential job -- non-honeybees, wasps, flies, beetles, birds and bats -- have decreasing populations as well. But honeybees are the big actors in commercial pollination efforts.
"One reason we're in this situation is this is a supersize society -- we tend to equate small with insignificant," Berenbaum said. "I'm sorry but that's not true in biology. You have to be small to get into the flower and deliver the pollen.

"Without that critical act, there's no fruit. And no technology has been invented that equals, much less surpasses, insect pollinators."
(Please, don’t use insecticides when honeybees are around. They are having trouble enough already.)