In my last post I wrote about
pesticides and I noted that certain types are considered especially dangerous,
but that all types should be viewed with great caution. A few days ago, a small wave of articles
about bee death reinforced that point.
The bee population has been
declining rapidly over the past years. An article in Science World Report notes that beekeepers lost 31
percent of their colonies in late 2012 and early 2013. Scientists have been
working hard to understand what's causing the decline because bees are an
integral part of the food production cycle and if they're not available in
large enough numbers to pollinate crops, results could be disastrous. Currently, it takes 60% of the country's bee
population to pollinate California 's
almond crop alone.
In the most recent study, researchers fed pollen from seven
types of crops to healthy bees, which caused them to experience a significant
decline in their ability to fight off a particular parasite. The pollen was
found to be highly contaminated with agricultural products, with 35 different
pesticides detected. On average, the
samples were found to contain nine different pesticides and fungicides each,
with one sample containing 21.Scientists were able to identify eight chemicals
that were associated with increased risk of parasite infection in the bees.
The research makes several
significant points:
- Fungicides, which are designed to kill fungus
rather than insects, were thought to be harmless to bees. The study found, however, that bees fed
pollen contaminated with fungicides were three times more likely to be
infected by the parasite.
- Weeds and wildflowers, from which some bees
collect pollen, were found to be contaminated with pesticides despite the
fact that they were not directly sprayed.
- A class of pesticides called neonicotinoids has been linked to bee deaths, but the new research shows that banning those chemicals is unlikely to solve the problem without additional steps. In an article entitled Scientists Discover What's Killing the Bees and It's Worse Than You Thought, a researcher is quoted as saying that “The pesticide issue in itself is much more complex than we have led to believe. It’s a lot more complicated than just one product, which means of course the solution does not lie in just banning one class of product.”
Hopefully, the study's results will
lead to some significant changes in the types and amounts of pesticides
currently used. As I've said many times,
however, none of us must wait for government action before making changes in
our own use of pesticide products. Seemingly small decisions really can make a difference to the health of
those who apply the chemicals and all who come in contact with them, whether they
be of the honeybee or human variety.