Rearing methods for the black soldier fly (Diptera: Stratiomyidae)

Area of Science:

• Entomology
• Insect Biology
• Waste Management

Background:

• Black soldier flies (Hermetia illucens) are non-pest insects valuable for managing animal manure and biosolids.
• Previous manure management studies relied on wild fly oviposition, but a dependable source of eggs and larvae was lacking.
• Achieving successful mating in black soldier flies had been a significant challenge for researchers.

Purpose of the Study:

• To establish a reliable laboratory colony of black soldier flies (Hermetia illucens).
• To overcome challenges in achieving consistent mating and egg/larval production.
• To facilitate further research and development of black soldier fly-based waste management systems.

Main Methods:

• Adult black soldier flies were housed in a 2x2x4m screen cage within a 7x9x5m greenhouse to provide adequate space and sunlight for aerial mating.
• Mating was observed to occur during winter days with clear skies.
• Adults required only water, and no supplementary food was provided.
• Larvae were reared on a moist mixture of wheat bran, corn meal, and alfalfa meal.

Main Results:

• Reliable mating of black soldier flies was achieved under specific greenhouse conditions.
• A sustainable laboratory colony has been maintained for three years.
• Effective techniques for egg collection and larval rearing were successfully implemented.

Conclusions:

• A dependable laboratory colony of black soldier flies can be established using the described methods.
• This reliable colony enables further development of manure management systems in enclosed animal housing and colder climates.
• The findings support the expanded use of black soldier flies for efficient and sustainable waste management.