Guillaume Saint-Jacques carefully placed 200 squirming yellow mealworm larvae into petri dishes in a Montreal lab, each one part of a quiet revolution in sustainable farming. At Université de Montréal, researchers are tackling one of insect farming’s most fragile links—disease vulnerability—by identifying hardier strains of mealworms that could transform a struggling industry. With global interest in insect protein soaring due to its low environmental footprint, the sector has hit a wall: up to 70% of new farms fail within the first few years, often due to uncontrolled outbreaks. The team, led by veterinary professor Marie-Odile Benoit-Biancamano and entomologist Colin Favret, set out to bring science-led stability to a field too often left to trial and error.
Insect farming promises a future where organic waste becomes animal feed, where plastic-eating mealworms help clean the planet, and where protein is produced with a fraction of the land and water used in traditional livestock. But without biosecurity, that future remains uncertain. Unlike pig or poultry farms—where airlocks, sanitation protocols, and disease monitoring are standard—many insect farms operate with minimal safeguards. "The risks are similar," Benoit-Biancamano warns. "With intensive production, the health risks increase and the consequences can be devastating."
To find a solution, Saint-Jacques exposed larvae from 10 different strains to Serratia marcescens, a deadly bacterium common in insect facilities. The results were telling: two strains—one from Turkey, one from France—showed significantly higher resistance to infection. While some strains grew fast but died quickly, these resilient lines developed more slowly yet survived longer, suggesting a trade-off between growth speed and disease resistance. The discovery opens the door to selective breeding programs that could produce robust, reliable stocks for farmers. Though the exact mechanisms—whether genetic, microbial, or immune priming—are still under investigation, the implications are clear: better strains mean fewer crashes, fewer losses, and more stable production.
The impact could be transformative, especially in Quebec, where the industry is at a crossroads. With no formal biosecurity guidelines in place, many hopeful entrepreneurs abandon their farms after repeated, unexplained die-offs. This research lays the groundwork for a more professionalized sector, one that borrows from decades of veterinary science to protect tiny but vital livestock. As Benoit-Biancamano puts it, the goal is to "rethink insect farming" with strain selection, health monitoring, and optimized conditions at its core. For an industry hungry for resilience, these unassuming mealworms may be carrying the blueprint for a sustainable future.