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[SANET-MG] trained insects for chemical detection

I understand that the trained insects come equiped with tiny diplomas and graduation hats :-)
Biotechnol. Prog., ASAP Article 10.1021/bp050164pS8756-7938(05)00164-5
Behavioral Monitoring of Trained Insects for Chemical Detection

Glen C. Rains,* Samuel L. Utley, and W. Joe Lewis

Department of Biological and Agricultural Engineering, University of Georgia, and United States Department of Agriculture-Agricultural Research Service, Tifton Campus, Tifton, Georgia 31793


A portable, handheld volatile odor detector ("Wasp Hound") that utilizes a computer vision system and Microplitis croceipes (Cresson) (Hymenoptera: Braconidae), a parasitoid wasp, as the chemical sensor was created. Five wasps were placed in a test cartridge and placed inside the device. Wasps were either untrained or trained by associative learning to detect 3-octanone, a common fungal volatile chemical. The Wasp Hound sampled air from the headspace of corn samples prepared within the lab and, coupled with Visual Cortex, a software program developed using the LabView graphical programming language, monitored and analyzed wasp behavior. The Wasp Hound, with conditioned wasps, was able to detect 0.5 mg of 3-octanone within a 240 mL glass container filled with feed corn (2.6 × 10-5 mol/L). The Wasp Hound response to the control (corn alone) and a different chemical placed in the corn (0.5 mg of myrcene) was significantly different than the response to the 3-octanone. Wasp Hound results from untrained wasps were significantly different from trained wasps when comparing the responses to 3-octanone. The Wasp Hound may provide a unique method for monitoring grains, peanuts, and tree nuts for fungal growth associated with toxin production, as well as detecting chemicals associated with forensic investigations and plant/animal disease.


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