These compounds are toxic to insects, and researchers fed the leaves to native caterpillars of the polyphemus moth to see how they'd react. Only 18% of the caterpillars survived, with the rate of ...

The scientists then fed these high-toxin leaves to caterpillars of the polyphemus moth, the second-largest moth species in North America. Fewer than 18 percent of the native moth caterpillars ...