Antagonists mode of action

Obviously, ecdysone or analogues that have similar or antagonistic modes of action could disturb the normal development of the insects and so can be used as insecticides. Inhibitors or inducers of the ecdysone biosynthesis may also be developed as insecticides. 

It should be mentioned that the antagonistic modes of action of these microbiological control strategies are not a direct replacement of antibiotics in the event of an infection. Their prophylactic application is, however, said to lead to a considerable reduction in infection risk. Although their effectiveness has become generally accepted in the aquaculture world, the exact mode of action of several microbiological approaches has not yet been unequivocally established. 

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