Location: Biological Control of Pests Research
Project Number: 6066-22000-062-00-D
Project Type: In-House Appropriated
Start Date: Nov 8, 2010
End Date: Nov 7, 2015
The long-term objective of this project is to develop an improved understanding of the biology, nutrition, and behavior of natural enemies of pest arthropods. Our primary target pest will be the two-spotted spider mite, Tetranychus urticae. Some of the most important natural enemies of this mite are phytoseiid predatory mites and coccinellids. We aim to implement, improve and increase the mass rearing capabilities of these organisms by developing artificial diets and novel rearing technology to enable economical biological control of this pest by augmentation of its natural enemies and to develop novel techniques of quality control and quality assurance. Our work will focus on the following: (1) Determine nutritional, behavioral, and physical conditions necessary for in vivo and in vitro insect rearing and use the results to implement mass production systems of biological control agents. (2) Determine the impact of mass rearing procedures on survival, reproduction, and gene expression. (3) Assess optimal conditioning of insects for release.
Research activities will focus on a specific predator, Stethorus punctillum and a generalistic predator, Coleomegilla (C.) maculata. Studying the nutritional requirements of a generalist versus a specific predator will provide insights on diet development of these 2 organisms. The generalist predator is expected to be an easier target for artificial diet development and success will have greater impact since C. maculate is an important predator of several economically damaging pest species.