Genetically Modified Birds
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(1). Environmental hazards:
Unintended harm is done to other organisms: Last year a laboratory study was published in Nature showing
that pollen from biotechnology (B.t.) corn caused high mortality rates in monarch butterfly caterpillars. Monarch
caterpillars consume milkweed plants, not corn, but the fear is that if pollen from B.t. corn is blown by the wind
onto milkweed plants in neighbouring fields, the caterpillars could eat the pollen and perish. Although the
Nature study was not conducted
under natural field conditions, the results seemed to support this viewpoint.
Unfortunately, B.t. toxins kill many species of insect larvae indiscriminately; it is not possible to design a B.t.
toxin that would only kill crop-damaging pests and remain harmless to all other insects. This study is being re-
examined by the U.S Department on Agriculture (USDA), the U.S. Environmental Protection Agency (EPA)
and other non-government research groups, and preliminary data from new studies
suggests that the original
study may have been flawed. This topic is the subject of acrimonious debate, and both sides of the argument are
defending their data vigorously. Currently, there is no agreement about
the results of these studies, and the
potential risk of harm to non-target organisms will need to be evaluated further.
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