Saturday 24 March 2007

Are GM Crops Killing Bees ?

Well, something strange is happening in the United States. This time it is happening to honey bees. Reports point out to a strange phenomenon that is not only sweeping across the US but is also being witnessed in Germany. Honey bees are abandoning their hives, and are dying. This has left not only the scientists baffled but also worried.

Is this because of GM crops ?

This is the right time to examine the implications of GM crops, and this is also the right time for the educated and elite to understand that playing with nature can be disastrous -- not only for the bees but also for the human being.


COLLAPSING COLONIES :
Are GM Crops Killing Bees ? By Gunther Latsch, Der Spiegel (edited) -
The problem, says Haefeker, has a number of causes, one being the varroa mite, introduced from Asia, and another is the widespread practice in agriculture of spraying wildflowers with herbicides and practicing monoculture.
Another possible cause, according to Haefeker, is the controversial and growing use of genetic engineering in agriculture. As far back as 2005, Haefeker ended an article he contributed to the journal Der Kritischer Agrarbericht ( Critical Agricultural Report ) with an Albert Einstein quote : "If the bee disappeared off the surface of the globe then man would only have four years of life left. No more bees, no more pollination, no more plants, no more animals, no more man."

Mysterious events in recent months have suddenly made Einstein's apocalyptic vision seem all the more topical. For unknown reasons, bee populations throughout Germany are disappearing -- something that is so far only harming beekeepers. But the situation is different in the United States, where bees are dying in such dramatic numbers that the economic consequences could soon be dire. No one knows what is causing the bees to perish, but some experts believe that the large-scale use of genetically modified plants in the US could be a factor.

FROM THE MAGAZINE - The scientists are also surprised that bees and other insects usually leave the abandoned hives untouched. Nearby bee populations or parasites would normally raid the honey and pollen stores of colonies that have died for other reasons, such as excessive winter cold. "This suggests that there is something toxic in the colony itself which is repelling them," says Cox-Foster. Walter Haefeker, the German beekeeping official, speculates that "besides a number of other factors," the fact that genetically modified, insect-resistant plants are now used in 40 percent of cornfields in the United States could be playing a role. The figure is much lower in Germany -- only 0.06 percent -- and most of that occurs in the eastern states of Mecklenburg-Western Pomerania and Brandenburg. Haefeker recently sent a researcher at the CCD Working Group some data from a bee study that he has long felt shows a possible connection between genetic engineering and diseases in bees.

The study in question is a small research project conducted at the University of Jena from 2001 to 2004. The researchers examined the effects of pollen from a genetically modified maize variant called "Bt corn" on bees. A gene from a soil bacterium had been inserted into the corn that enabled the plant to produce an agent that is toxic to insect pests. The study concluded that there was no evidence of a "toxic effect of Bt corn on healthy honeybee populations." But when, by sheer chance, the bees used in the experiments were infested with a parasite, something eerie happened.
According to the Jena study, a "significantly stronger decline in the number of bees" occurred among the insects that had been fed a highly concentrated Bt poison feed. According to Hans-Hinrich Kaatz, a professor at the University of Halle in eastern Germany and the director of the study, the bacterial toxin in the genetically modified corn may have "altered the surface of the bee's intestines, sufficiently weakening the bees to allow the parasites to gain entry -- or perhaps it was the other way around. We don't know."

Of course, the concentration of the toxin was ten times higher in the experiments than in normal Bt corn pollen. In addition, the bee feed was administered over a relatively lengthy six-week period. Kaatz would have preferred to continue studying the phenomenon but lacked the necessary funding. "Those who have the money are not interested in this sort of research," says the professor, "and those who are interested don't have the money."

1 comment:

Devi said...

Sierra Club writes to Senator Harkin!

Excerpts below ....the full letter
in the link ...
http://www.sierraclub.org/biotech/whatsnew/whatsnew_2007-03-21.asp
This past decade we are seeing releases into the environment that we have never before seen on this planet. Genetic engineering involves the artificial transfer of genes from one organism into another, bypassing the protective barrier between species. Scientists admit that "unintended consequences" may occur due to the lack of precision and specificity in the DNA sites on different plant chromosomes where the inserted genes randomly end up. According to the prominent biologist Dr. Barry Commoner and pioneer in ecology, "Genetically engineered crops represent a huge uncontrolled experiment whose outcome is inherently unpredictable. The results could be catastrophic."(11) Dr. David Schubert has expressed similar concerns in pointing out some of the significant holes existing in current genetic engineering technology that raise serious questions about how well we understand it and how to apply such a new emerging science.(12) An issue Dr. Schubert raises is the "unpredictability" in the artificial gene splicing technology that is routinely performed in genetic engineering because it may lead to unpredictable consequences. Are the honey bees trying to tell us about the "unintended consequences" from large-scale genetic engineering in agriculture?