Bacterial flora of free-living Double-crested cormorant (Phalacrocorax auritus) chicks onPrince Edward Island, Canada, with reference to enteric bacteria and antibiotic resistance

Double-crested Cormorant (Phalacrocorax auritus) Science Article 7


Cloacal and pharyngeal swabs from 100 tree-nesting Double-crested cormorant (DCC) chickswere examined by culture for commensal and potentially pathogenic bacteria. No Salmonella or Erysipelothrix were isolated from the cloacal swabs. Twenty-two cloacal swabs were positive for Campylobacter, of which 14 were C. jejuni, C. coli, and 1 C. lari. None belonged to common serotypes isolated from humans or animals in recent years in Canada. Tests for antimicrobial drug resistance among 187 commensal Escherichia coli isolates from the cloacal swabs indicated that %5% were resistant to any of the 12 antibiotics tested. This contrasts with the frequently high resistance rates among E. coli isolates from poultry.

Greg Dobbin et al., Comparative Immunology, Microbiology and Infectious Diseases 28 (2005) 71-82

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