Turkey louse

The Turkey louse (genus Chelopistes) is an ectoparasite belonging to the order Phthiraptera and the family Philopteridae. Unlike blood-sucking lice, this species feeds on feathers, skin debris, and dermal scales, spending its entire life cycle on the host’s body.

These parasites specifically target turkeys, often causing severe infestations that compromise the health and welfare of the flock. While they do not consume blood directly, their constant movement and feeding activity irritate the skin, causing significant physiological stress to the host.

The life cycle consists of three main stages: egg, nymph, and adult. Eggs are firmly cemented to the base of the feathers, primarily around the vent, neck, and wings. Under optimal conditions, the life cycle completes in just a few weeks, allowing for rapid population explosions within a poultry house if left untreated.

Damage caused by Chelopistes includes feather breakage, loss of down, and raw skin patches due to constant preening and scratching. Infested birds often show signs of restlessness, reduced feed efficiency, and weight loss. In severe cases, the weakened birds become more susceptible to secondary skin infections and stress-related diseases.

Integrated pest management is essential for control. Effective strategies include:

• Regular inspection of the flock for signs of infestation.
• Application of approved insecticidal dusts or sprays directly to the birds.
• Thorough cleaning and disinfection of housing facilities between cycles.
• Isolation of newly introduced birds to prevent the spread of parasites.
• Providing dust baths to encourage natural grooming behaviors.