No regulations existed at the time, and more careful evaluation should prevent such releases now. Voegele, N. While this will continue to be an enormously useful approach, it now seems possible that basic ecological theory could inform the design and management of landscapes to conserve and enhance the effectiveness of entire communities of natural enemies.
Genetic improvement of several predators and parasitoids has been accomplished with traditional selection methods Hoyand appears possible with recombinant DNA technology.
Many of these introductions do not result in establishment or if they do, the organism may not become pests. Kruess, A. ABS was recognised early on by IOBC as a risk for biological control practitioners who would have to comply with these requirements, potentially introducing considerable bureaucracy to the process of exploration and utilisation of biocontrol agents Cock et al.
Concern about the risk which introduced biological control agents used against arthropod pests might pose to natural, non-agricultural ecosystems did not become a major issue until much more recently.
Between andthe first Dominion Entomologist, James Fletcher, continued introductions of other parasitoids and pathogens for the control of pests in Canada.
Lepidoptera, Coleoptera are currently the only commercial insect resistant GM plants and are grown on