Mange Caused by a Novel Micnemidocoptes Mite in a Golden Eagle (Aquila chrysaetos)

Miranda J. Sadar, David Sanchez Migallon Guzman Lv, Asli Mete, Janet E Foley, Nicole Stephenson, Krysta H. Rogers, Claire Grosset, K. Shawn Smallwood, Jessica Shipman, Amy Wells, Stephen D White, Douglas A. Bell, Michelle Hawkins

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


A second-year, female golden eagle (Aquila chrysaetos) was live trapped in northern California because of severe feather loss and crusting of the skin on the head and legs. On physical examination, the bird was lethargic, dehydrated, and thin, with severe feather loss and diffuse hyperemia and crusting on the head, ventral wings, ventrum, dorsum, and pelvic limbs. Mites morphologically similar to Micnemidocoptes derooi were identified with scanning electron microscopy. The eagle was treated with ivermectin (0.4 mg/kg) once weekly for 7 weeks, as well as pyrethrin, meloxicam, ceftiofur crystalline free acid, and voriconazole. Although the eagle's condition improved, and live mites or eggs were not evident on skin scrapings at the time of completion of ivermectin treatment, evidence of dead mites and mite feces were present after the last dose of ivermectin. Two additional doses of ivermectin and 2 doses of topical selamectin (23 mg/kg) were administered 2 and 4 weeks apart, respectively. No mite eggs, feces, or adults were evident after treatment was completed. A second golden eagle found in the same region was also affected with this mite but died soon after presentation. This is the first report, to our knowledge, of successful treatment, as well as treatment with selamectin, of mites consistent with Micnemidocoptes species in any raptorial species.

Original languageEnglish (US)
Pages (from-to)231-237
Number of pages7
JournalJournal of Avian Medicine and Surgery
Issue number3
StatePublished - Sep 1 2015


  • Aquila chrysaetos
  • avian
  • bird
  • ectoparasite
  • golden eagle
  • Micnemidocoptes derooi
  • mite
  • parasite
  • raptor
  • skin disease

ASJC Scopus subject areas

  • Small Animals


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