CULTURE & COLONIZATION

L. K. Etzel and E. F. Legner

Host Food 125

Host Production 127

Culture of Entomophagous Arthropods 140

Contamination 140

Genetic Changes 142

Causes of Genetic Change 144

Retaining Genetic Diversity 146

Culture and Synthetic Diet 148

Interactions between Entomophages, Hosts and Host Food 150

Food of Adult Entomophages 152

Factitious Hosts for Entomophages 152

Dead Hosts for Entomophages 153

Environmental Conditions 156

Mating 156

Sex-Ratio Changes 157

Rearing Density and Entomophage to Host Ratios 158

Behavior 159

Special Techniques and Considerations 160

Quality 164

Liberation Procedures 165

Collection and Dissemination 166

Principal Factors Influencing Establishment or Effectiveness 167