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Beginning beekeeper |
Honey bees are in the news. Have been for years now. In about 2006, a mysterious condition became
apparent to commercial beekeepers. Colonies of bees dwindled to just a few
young bees and a queen. Instead of tens of thousands of worker bees in a colony
only a handful remained. No disease or other pest organisms were apparent. It
was not a typical pesticide kill in which many dead bees are found piled up in
front of the colony.
The term “Colony Collapse Disorder” (CCD) was coined to describe
this phenomenon. Eight years later, a simple explanation for CCD still does not
exist. But that doesn't mean no one cares or efforts to find answers have not
been made. Last fall a panel of experts who have been studying the problem for
almost a decade came to these conclusions:
1) Consensus
is building that a complex set of stressors
and pathogens is associated with CCD.
2) The parasitic
mite, Varroa destructor, remains the
single most detrimental pest of honey bees and is closely associated with overwintering
colony declines. ( note: overwintering losses are not necessarily CCD)
3) Several
viruses are associated with CCD and Varroa mites aggravate the virus problem.
Other pathogens, both new and old, are also increasingly detected.
4) Poor honey
bee nutrition due to lack of good, diverse food sources has an effect on honey
bee health. Loss of honey bee habitat and forage is a concern.
5) Effects of
pesticides on honey bees has been increasingly documented (PSU is taking a lead
role here). Both acute (immediate, lethal injury) and sub lethal effects are
known. Shockingly, Penn State researchers found that more than 100 different
pesticides were detected in a sampling of honey bee pollen and wax.
Interestingly, the most commonly found pesticides…. and those found in highest
amounts, were applied by beekeepers to control Varroa mites!
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Frame with honey bees |
The good news is that bees of all kinds are getting the attention
they deserve. Some cool breakthroughs in long term preservation of honey bee
sperm will allow introduction of traits from European strains of bees through
artificial insemination. (please note that the honey bee we have in the USA was
an Old World import about 400 years ago… along with a lot of other plants and
animals we eat and love).
And the public concern for bees has resulted in a surge of
interest in beekeeping. The ABC’s of Beekeeping course that I have conducted
for the last five years has filled to capacity every year. The same thing is
happening throughout the country. Penn State has developed an on-line beekeeping
course called Beekeeping 101 http://beekeeping101.psu.edu/ that allows you to study practical beekeeping
anytime, anywhere.
Honeybees aren't the only bees on the plant. Thousands of
other bee species are also experiencing disease, loss of habitat and assaults from
pesticides.
Be careful in assessing what you read about honeybee health
in the popular press and the internet. Often times the headline (or even the
main article) is designed to grab your attention but not enlighten the reader. Stories
about bad guys and bogeymen sell newspapers but fail to fully explain
important, complex issues such as the health of a cosmopolitan insect like the
honey bee.