Practitioners in Europe often face sudden, local outbreaks of invasive fruit flies. While the Sterile Insect Technique (SIT) is highly effective, it typically relies on large, centralized mass-rearing facilities that are costly, slow to implement, and poorly suited for rapid, local containment.

The REACT project developed and validated an innovative small-scale, modular rearing facility concept that can be set up near an outbreak area and produce sufficient numbers of high-quality sterile males for early containment and SIT eradication actions. The facility requires about 35 m² and is organized into functional rooms for (1) adult rearing and egg collection, (2) larval development and pupation, (3) diet preparation and quality control, and (4) washing and storage. Using established rearing protocols and genetic sexing strains, the facility can produce up to a few hundred thousand sterile males per week, depending on operational settings.

To keep investment and complexity low, the concept relies on standard laboratory equipment, simple climate control, and external irradiation services rather than installing irradiation on site. 3D printing was used to create adult rearing cages and quality-control devices that fit a limited space. Enhanced larval diets, including symbiotic bacteria-derived supplements, were integrated into routine rearing and improved male quality.

In practice, this concept allows local SIT deployment with shorter transport distances and greater operational flexibility. For end-users and responsible authorities, the main benefits are faster start-up for local containment and better integration of SIT into regional pest management and contingency planning.

Geographical Location
Greece

Additional information
The main cost items are the dedicated space (≈35 m²), basic climate control, standard lab equipment and consumables, and access to an external irradiation service.

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