Cricket Disease and Pathogen Control: AdDNV, Biosecurity, and Quarantine
Disease is the existential risk on a cricket farm. A single outbreak of Acheta domesticus densovirus can move through a facility in days and leave you with empty bins and months of lost revenue. Unlike most livestock, crickets have no approved treatments. Your only real defenses are prevention, early detection, and containment.
Understanding AdDNV
Acheta domesticus densovirus (AdDNV) is a single-stranded DNA virus that specifically attacks Acheta domesticus, the house cricket and the dominant commercial species in North America and Europe. It spreads through direct contact, contaminated surfaces, feed, substrate, and likely through the air in high-density settings.
Infected crickets show a characteristic "banded" appearance where the abdomen develops dark transverse lines as the virus disrupts fat body tissue. You'll also see sudden mass mortality, usually starting with adults and near-adults. The die-off can accelerate within 48 hours of first symptoms. By the time you notice something is wrong, the virus has typically already spread beyond the affected bin.
There is no cure. An infected batch must be culled immediately and the bins, substrate, and equipment must be decontaminated before reuse. Some farms that experienced AdDNV outbreaks had to do complete facility shutdowns, strip everything, and rebuild their colonies from clean stock.
Gryllus bimaculatus, the black cricket, is not susceptible to AdDNV. Some larger farms have shifted partially or fully to G. bimaculatus specifically because of this. The tradeoff is that G. bimaculatus has different handling characteristics and market positioning. It's a legitimate risk management strategy, not just a second-choice species.
Other Pathogens
Beyond AdDNV, cricket farms face bacterial infections (commonly Serratia marcescens, which causes red leg syndrome), fungal infections especially in humid or poorly ventilated areas, and parasitic nematodes if live substrates are used. Gregarine gut parasites are common in wild-caught colonies and can reduce feed conversion and growth rates even when they don't cause direct mortality.
Red leg syndrome presents as reddening of the legs and abdomen, lethargy, and eventually death. It tends to flare up when immunity is compromised by stress factors: overcrowding, temperature fluctuations, feed gaps, or poor water quality. Unlike AdDNV, bacterial infections are often manageable if caught early through sanitation and density reduction, though antibiotic use in food insects raises regulatory questions.
Fungal issues are usually environmental. Persistent high humidity, poor airflow, and wet substrate create conditions where mold colonizes feed and substrate and then spreads to crickets. The fix is almost always ventilation and moisture control. See cricket farm environment management for specifics on humidity and airflow management.
Biosecurity Fundamentals
The core principle is keeping potential pathogens out of the facility and preventing cross-contamination between batches once inside.
Entry controls: Anyone entering the cricket area should change footwear or use boot covers. Clothing that has been near other insect operations or livestock is a contamination risk. Visitors should be minimized, and when permitted, should follow the same protocols as staff.
Equipment segregation: Scoops, water containers, egg flat handling tools, and any equipment that contacts crickets should be dedicated to a single production zone if your facility has multiple rooms or zones. Equipment sharing is a fast path for spreading pathogens between batches of different ages.
Feed and substrate handling: Store feed in sealed containers off the floor. Check for mold before introducing feed to bins. Egg flats sourced externally should be inspected for signs of contamination. Some farms heat-treat egg flats before use as a precaution.
Dead cricket removal: Remove dead crickets from bins during every daily check. Dead crickets decompose quickly and create bacterial and ammonia loading. If you see a spike in daily mortality that isn't explained by normal end-of-life die-off in older batches, investigate immediately. Tracking daily mortality per batch in CricketOps gives you the historical baseline you need to recognize when a number is anomalous.
Quarantine Protocols
Any crickets coming from an outside source, whether purchased stock or eggs, should go through a quarantine period before entering main production. A minimum 14-day quarantine in a physically separate area, with separate equipment and handling staff, is the standard approach.
During quarantine, monitor closely for any signs of disease. If anything looks wrong, do not move the batch into main production. The cost of discarding a quarantine batch is far lower than the cost of an outbreak in your main facility.
New supplier relationships carry elevated risk. An established supplier with clean documentation and a track record is meaningfully lower risk than a new source, even if the new source is cheaper. Ask suppliers about their AdDNV history and biosecurity practices. A supplier that can't answer those questions is not a supplier you want to depend on.
Responding to a Suspected Outbreak
If you see sudden mass mortality or characteristic banding in an Acheta domesticus batch, isolate the affected bins immediately. Stop all movement of crickets, equipment, or personnel from the affected zone to other zones.
Cull the affected batch by freezing. Bag all material including dead crickets, substrate, and egg flats and dispose of them sealed. Do not compost or feed to other animals.
Decontaminate all surfaces the affected batch contacted. A diluted bleach solution (1:10) is effective on hard surfaces. Let surfaces dry completely before reintroduction. Some farms use quaternary ammonium compounds for ongoing sanitation between batches as a standard practice.
See cricket batch tracking for how to document an outbreak event against your batch records, which matters for tracing the source and for insurance or regulatory purposes.