Chlamydia psittaci infection in canaries heavily infested by Dermanyssus gallinae
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Dermanyssus gallinae is a haematophagous ectoparasite responsible for anemia, weight loss, dermatitis and a decrease in egg production. Dermanyssus gallinae may play a role in the modulation of the host immune system, maybe predisposing the host to some bacterial infections such as chlamydiosis. This is an important zoonosis. Humans are exposed to Chlamydia psittaci through inhalation of the agent dispersed from the infected birds. In this study, a syndrome observed in an aviary of canaries was investigated. A heavy infestation by D. gallinae was reported. Simultaneously, a C. psittaci infection was molecularly confirmed in the canaries. Combined therapy was applied successfully. The association of C. psittaci with the examined mites has been confirmed. Therefore, we think that D. gallinae have played a role in the spreading of C. psittaci infection among the canaries. Moreover, D. gallinae could have played an important role predisposing the canaries to the development of chlamydiosis, by inducing anemia and debilitation. The control of mites in the aviaries may represent a crucial step for the prevention of important infection such as chlamydiosis in birds and humans.
KeywordsDermanyssus gallinae Chlamydia psittaci Canary Zoonosis
The authors wish to thank Aldo Corriero, Department of Animal Production, Faculty of Veterinary Medicine, University of Bari, Italy, for his support for micrograph of Dermanyssus gallinae.
- Andersen AA, Vanrompay D (2000) Avian chlamydiosis. Rev Sci Technol 19:396–404Google Scholar
- Andersen AA, Vanrompay D (2008) Avian chlamydiosis (psittacosis, ornithosis). In: Saif YM (ed) Diseases of poultry, 12th edn. Blackwell Publishing, Ames, pp 971–986Google Scholar
- Arends JJ (2008) External parasites and poultry pests. In: Saif YM (ed) Diseases of poultry, 12th edn. Blackwell Publishing, Ames, pp 905–930Google Scholar
- Baker AS (1999) Mites and ticks of domestic animals. An identification guide and information source. The Natural History Museum, The Stationery Office, LondonGoogle Scholar
- Everett KD, Bush RM, Andersen AA (1999) Emended description of the order Chlamydiales, proposal of Parachlamydiaceae fam. Nov. and Simkaniaceae fam. Nov., each containing one monotypic genus, revised taxonomy of the family Chlamydiaceae, including a new genus and five new species, and standards for the identification of organisms. Int J Syst Bacteriol 49:415–440PubMedCrossRefGoogle Scholar
- Gerlach H (1994) Chlamidia. In: Ritchie BW, Harrison GJ, Harrison LR (eds) Avian medicine: principles and application. Wingers Publishing, Lake Worth, pp 984–996Google Scholar
- International Committee on Systematics of Prokaryotes, Subcommittee on the taxonomy of the Chlamydiae (2010) Minutes of the closed meeting, 21 June 2010, Hof bei Salzburg, Austria. Int J Syst Evol Microbiol 60:2694Google Scholar
- Magnino S, Haag-Wackernagel D, Geingenfeind I, Helmecke S, Dovc A, Prukner-Radovcic E, Residbegovic E, Ilieski V, Laroucau K, Donati M, Martinov S, Kaleta EF (2009) Chlamydial infection in feral pigeons in Europe: review of data and focus on public health implications. Vet Microbiol 135:54–67PubMedCrossRefGoogle Scholar
- Smith KA, Campbell CT, Murphy J, Stobierski MG, Tengelsen LA (2011) Compendium of measures to control Chlamydophila psittaci infection among humans (psittacosis) and pet birds (avian chlamydiosis), 2010 National Association of State Public Health Veterinarians (NASPHV). J Exot Pet Med 20:32–45CrossRefGoogle Scholar