Richard Shukle and Jonathan Neal (IMAGE) Purdue University Caption Purdue researchers, from left, Richard Shukle and Jonathan Neal examine plots of wheat infested with Hessian fly larvae. Their research has identified genes in the insects that produce enzymes in response to toxins plants use to protect themselves from the flies. Credit Purdue Agricultural Communication photo/Tom Campbell Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.