Dose-response models, discrimination

The synthetic compound 6 was clearly active in the wind tunnel bioassay at doses of 1 ng and even 100 pg (Table III), but the other three model compounds (3-5) were not. Interestingly, the two pheromone components identified earlier from C, hemipterus (1 and 2) also elicited significant responses from C. lugubris particularly the 14-carbon component 2. C. lugubris has an extraordinary ability to discriminate among tetraenes with very similar structures, but responses can occur toward more than one compound. 

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