Highly effective genes conferring pest resistance have been and are being e
ngineered into crop plants. There is a strong likelihood that these transge
nes will be transferred from agronomic ecosystems into natural ecosystems.
There will be ecological risks ranging from creating more invasive weeds to
affecting beneficial insects. I argue for the need of relevancy in choosin
g appropriate experimental systems for assessing ecological risks of commer
cial transgenic insecticidal crops. Finally, I will describe a transgene mo
nitoring system based upon green fluorescent protein (GFP), and how it may
be used commercially.