Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Possibilities for natural enemies in Heliothis management and the contribution of the Commonwealth Institute of Biological Control.

Abstract

Some factors affecting the efficiency of natural enemies as agents for the biological control of species of Heliothis are discussed, especially the effects of migration, feeding behaviour, food-plant, climate and insecticide usage. Tables are presented showing some important parasites in India and Africa, and some important predators and parasites in the USA. It is suggested that pathogens are likely to be useful only when applied as biological pesticides, and that predators are best manipulated by conservation and augmentation. Only a few parasites in each region are sufficiently abundant to be of interest as control agents. On the other hand, there are possibilities for the introduction of insect parasites to occupy empty niches in some areas, and for their conservation and augmentation in pest-management schemes. Further surveys are likely to reveal additional useful species, especially in South America.