Biological control of striped cucumber beetles using parasitoid fly rearing protocol
Novel rearing protocol for Celatoria setosa parasitoid flies targeting Acalymma vittatum striped cucumber beetles. Research investigates how cucurbitacin sequestration by beetles affects parasitoid hatch rates, supporting integrated pest management for cucurbit crops.
Overview
This research addresses the destructive striped cucumber beetle (Acalymma vittatum), a major pest of cucurbit crops including squash, pumpkin, and melon. The beetle causes damage through direct feeding and by transmitting bacterial wilt disease. The proposed solution leverages a natural enemy relationship with the parasitoid fly Celatoria setosa, which parasitizes the beetles. By understanding how cucurbitacin defense compounds sequestered by the beetles influence parasitoid hatch rates, this work supports the development of biological control strategies for sustainable cucurbit agriculture.
Technical specifications
- Novel rearing protocol for Celatoria setosa flies achieving a 50% eclosion hatch rate in pilot trials
- Chemical analysis using HPLC-QTOF to quantify sequestered cucurbitacins in beetle treatment groups
- Bioassay methodology pairing parasitized beetles with parasitoid flies in controlled arenas
- Treatment design varying dietary cucurbitacin availability over four-week periods
- Monitoring framework for pupation and hatching rates to assess parasitoid efficacy
- Dual assessment approach combining chemical assays and behavioral bioassays for male and female beetles
Technology readiness level
This research is at an early-to-mid stage of development. The rearing protocol has been validated through pilot trials demonstrating consistent 50% eclosion rates. Ongoing laboratory bioassays are documenting and enhancing parasitoid efficacy as a natural enemy. Future validation will systematically explore the ecological relationship between Celatoria setosa and Acalymma vittatum in relation to semiochemicals influencing beetle behavior, with the goal of supporting biological control applications in large-scale cucurbit agriculture.
About Cornell University
Cornell University is a comprehensive private, land-grant research university with campuses in Ithaca and New York City, combining significant scale with cross-disciplinary breadth. Industry connects through open-access user facilities and prototyping labs, pilot-scale testbeds, and a research and technology park that provide pathways from discovery to demonstration. A statewide extension network and integration with a major hospital system enable real-world deployment, while a graduate campus embedded in New York City’s tech corridor provides direct access to startups, venture investors, and corporate R&D teams. Research is supported by competitive federal funding from agencies such as the National Science Foundation, National Institutes of Health, the Department of Energy, and the U.S. Department of Agriculture. A dedicated technology transfer office streamlines IP management, licensing, startup formation, and corporate partnerships across campuses.
delivered to your inbox.