NAVLE Rabbits

Rabbit Otoacariasis Study Guide

March 28, 2026 20 min read 19 views
Otoacariasis (ear mite infestation) in rabbits is a common and highly contagious parasitic disease caused by Psoroptes cuniculi, a large, non-burrowing mite.

Overview and Clinical Importance

Otoacariasis (ear mite infestation) in rabbits is a common and highly contagious parasitic disease caused by Psoroptes cuniculi, a large, non-burrowing mite. Also known as psoroptic mange, ear mange, or ear canker, this condition represents one of the most frequently encountered ectoparasitic diseases in domestic rabbits worldwide and is a significant topic for the NAVLE examination.

This disease causes intense pruritus, inflammatory ear disease, and can lead to severe complications including secondary bacterial infections, otitis media, otitis interna, and even fatal meningitis if left untreated. Economic losses in commercial rabbit operations can be substantial due to decreased growth rates, poor feed conversion, and mortality.

Drug Dosage Route & Frequency Notes
Ivermectin 0.2-0.4 mg/kg SC, PO, or topical; q14 days for 2-3 treatments Most commonly used. Highly effective. Complete cure within 30 days with proper protocol.
Selamectin 6-18 mg/kg Topical (spot-on); q14-30 days for 3 treatments Excellent efficacy. Easy application. Well tolerated.
Moxidectin 0.4 mg/kg or 1 mg/kg PO or topical; single dose or q14 days for 2 treatments Effective alternative. May provide longer duration of action.
Fluralaner 25 mg/kg PO; single dose Recent studies show efficacy with single oral dose. Longer duration of action (up to 90 days).
Imidacloprid-Moxidectin Per label for species Topical; q30 days for 3 treatments Combination product. Effective against ear mites.

Etiology

Causative Agent

Psoroptes cuniculi is a large, oval-shaped, non-burrowing mite belonging to the family Psoroptidae. Adult mites measure approximately 400 to 750 micrometers in length, making them just visible to the naked eye under optimal conditions.

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