Genetically Modified Crops Implicated in Honeybee Colony Collapse Disorder

January 13, 2009 by admin  
Filed under Stories Of Interest

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As the disappearance of honeybees continues, researchers are trying desperately to discover the cause of Colony Collapse Disorder (CCD). General concensus at this point is that there is more than once cause and the latest culprit may be genetically modified crops. This is one area of research being neglected as mainstream scientists insist GM crops are safe.

For the last 100 years, beekeepers have experienced colony losses from bacteria, (foulbrood), mites (varroa and tracheal) and other pathogens. These problems are dealt with by using antibiotics, miticides and and other methods of pest management. Losses are slow and expected and beekeepers know how to limit the destruction. This new mass die-off is different in that it is virtually instantaneous with no warning of the impending collapse.

John McDonald, a bee keeper in Pennsyvania with a background in biology, speculated that genetically modified crops could play a role in CCD. Although the government constantly reassures us that these genetic manipulations are safe for both humans and the environment, his hope is that looking more closely at these issues might raise questions about those assumptions.

The common bacterium, bacillus thuringiensis (Bt) supplies the most commonly used segment of transgenic DNA. Bt has been used for decades by farmers and gardeners to control crop damage from butterfy larvae. Now, instead of spraying this bacterium directly on the crops, where it is eaten only by the target insects, the genes containing the insecticidal traits are incorporated into the genome of the plant itself. As the genetically modified plant grows, these Bt genes are replicated in every cell of the plant, including pollen. Therefore, every cell of each GM plant contains its own poison aimed to kill the target insect. The target insects consume some portion of the plant, then once ingested, the toxin produced by the Bt genes causes crystallization in the guts of boring larvae and thus death. The primary toxin is a protein called Cry1Ab. In the case of field corn, the targeted insects are stem and root-borers and butterfly larvae.

via Genetically Modified Crops Implicated in Honeybee Colony Collapse Disorder.

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