"chalcidoidea" - 1 õppematerjal

The control of forest insects: general considerations

Natural enemies Under normal conditions they tend to hold them check Beneficial insects Birds Rodents Fungus, bacterial and other diseases of insects Beneficial Insects Insects eat other insects 1) Predators, which quickly kill and eat their prey. 2) Parasites, which live within or on their host during some stage of its life and gradually consume it without causing the death of the host.  Predator and Parasite Harmonia axyridis Chalcidoidea muscidifurax Birds Birds are one of the most important factor in holding destructive forest insects under control. Woodpeckers are important enemies of bark beetles and borers.