Talking Biotech with Dr. Kevin Folta Biotech Takes On the Screw Worm - Dr. Max Scott
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Sep 27, 2025 Dr. Maxwell Scott, entomologist and expert in genetic pest management at North Carolina State University, delves into the menace of the screw worm, a parasitic insect affecting livestock. He shares insights on the historic success of the sterile insect technique in eradication efforts and discusses the current resurgence in North America. Fascinatingly, he explores innovative gene drive technologies being developed to manage screw worm populations while addressing public perception and regulatory challenges surrounding these genetic solutions.
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Screwworm Is An Obligate Flesh-Eating Parasite
- Screwworm (Cochliomyia hominivorax) is an obligate parasitic blowfly whose larvae eat live warm-blooded animals, causing high mortality if untreated.
- Its lifecycle makes it uniquely devastating and different from facultative blowflies that target dead tissue.
Sterile Insect Technique Eradicated Screwworm
- The sterile insect technique (SIT) was devised mid-20th century and used ionizing radiation to sterilize flies for release.
- Florida eradicated screwworm within two years using SIT, demonstrating dramatic program success.
Inspect Livestock Often For Early Signs
- Inspect livestock frequently for wounds, nasal, ear, or mouth infestations to catch screwworm early.
- Treat promptly because maggot presence attracts additional females and worsens the wound quickly.