Chlamydiaceae-Like Bacterium in Wild Magellanic Penguins (Spheniscus magellanicus)

• Published in: Diversity
• Main Authors: Gallo Vaulet, Lucía, Vanstreels, Ralph Eric Thijl, Gallo, Luciana, Entrocassi, Andrea Carolina, Peker, Laura Alejandra, Blanco, Gabriela Silvina, Rago, María Virginia, Rodríguez Fermepin, Marcelo, Uhart, Marcela María
• Format: Article in Journal/Newspaper
• Language: English
• Published: MDPI
• Subjects: CHLAMYDIOSIS; MICROBIOTA; REAL-TIME PCR; SEABIRD; SOUTH AMERICA; WILD BIRD; https://purl.org/becyt/ford/1.6; https://purl.org/becyt/ford/1; Bering Sea; Argentina; Chubut; Lucía; Antarc*; Antarctica; antarcticus
• Online Access: http://hdl.handle.net/11336/205861

The family Chlamydiaceae is comprised of obligate intracellular bacteria, some of which are significant pathogens of humans and domestic animals. Magellanic penguins (Spheniscus magellanicus) are susceptible to Chlamydia psittaci outbreaks in captivity, and serological surveys detected antibodies against C. psittaci (or antigenically similar organisms) in wild populations of this species. To investigate the occurrence of Chlamydiaceae in wild Magellanic penguins, 167 cloacal swabs were collected from apparently healthy individuals at four breeding colonies along the coast of Chubut, Argentina. Real-time PCR revealed the presence of DNA from Chlamydiaceae-like bacteria in 61 cloacal swabs (36.5%). Detection did not correlate to nutritional status or to meaningful hematological abnormalities. Isolation in monkey kidney cells was unsuccessful, but DNA sequences for the 16S–23S rRNA region were obtained from one sample. Phylogenetic analysis showed a close relationship to unidentified Chlamydiaceae-like bacteria found in chinstrap penguins (Pygoscelis antarcticus) in Antarctica and seagulls in France and the Bering Sea, and to Chlamydiifrater spp. isolated from flamingos in France. Further studies are necessary to clarify the taxonomy and investigate the epidemiology, pathogenicity, and zoonotic potential of this group of Chlamydiaceae-like bacteria. Fil: Gallo Vaulet, Lucía. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Fisiopatología y Bioquímica Clínica; Argentina Fil: Vanstreels, Ralph Eric Thijl. University of California at Davis; Estados Unidos Fil: Gallo, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto de Biología de Organismos Marinos; Argentina Fil: Entrocassi, Andrea Carolina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Fisiopatología y Bioquímica Clínica; Argentina Fil: Peker, Laura Alejandra. Universidad de Buenos Aires. Facultad de ...