Black soldier fly larvae are the dominant species in insect protein farming. Understanding their biology and potential welfare considerations helps develop appropriate standards for this fast-growing industry.
Black soldier fly welfare sits at the intersection of enormous production scale and genuine scientific uncertainty about insect experience. Billions of larvae are produced weekly in large facilities, meaning even a small probability of welfare-relevant experience represents significant moral weight at scale. Current best practice focuses on maintaining optimal rearing conditions — appropriate temperature, substrate quality, moisture, and population density — that simultaneously maximize productivity and minimize potential stress. Freezing as a killing method is preferred over heat exposure, as cold temperatures appear to reduce neurological activity before death. Developing species-specific welfare indicators and monitoring frameworks is an important step for this rapidly scaling industry.