Tropical fowl mite

Systematic position: The tropical fowl mite (Ornithonyssus bursa) belongs to the order Mesostigmata and the family Macronyssidae. It is a highly specialized ectoparasite that impacts the agricultural poultry sector, posing significant management challenges for farmers and livestock specialists worldwide.

Affected hosts and environment: While not a plant pest, this mite is a major parasite of domestic chickens, turkeys, and other avian species. In agricultural settings, it frequently occupies coop structures, storage areas, and nests. The pest can spread between farms through contaminated equipment, crates, or movement of wild birds that nest near agricultural buildings.

Biology and life cycle: The life cycle involves several stages: egg, larva, protonymph, deutonymph, and adult. Under ideal conditions of warmth and humidity, the entire cycle can be completed in approximately one week. Unlike the northern fowl mite, this species is known for its ability to survive for periods away from the host, making the sanitization of housing facilities difficult.

Damage and economic impact: Infestations cause severe irritation, skin lesions, anemia, and reduced productivity in poultry. Constant biting leads to stress in birds, significantly impacting their growth rates and egg production. Furthermore, workers may suffer from dermatitis due to mite bites, which necessitates strict occupational health protocols during the treatment of infested sites.

Control measures: Effective management requires an integrated pest management approach focused on:

• Thorough cleaning and disinfection of poultry houses
• Application of approved acaricides on walls and roosts
• Exclusion of wild birds via screens and netting
• Routine monitoring of bird health to detect early signs of infestation
• Removal and disposal of infested litter materials