Evidence of antibiotic resistance in Enterobacteriales isolated from green sea turtles, Chelonia mydas on the Great Barrier Reef

Ahasan, Md. Shamim, Picard, Jacqueline, Elliot, Lisa, Kinobe, Robert, Owens, Leigh, and Ariel, Ellen (2017) Evidence of antibiotic resistance in Enterobacteriales isolated from green sea turtles, Chelonia mydas on the Great Barrier Reef. Marine Pollution Bulletin, 120. pp. 18-27.

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This study investigated Enterobacteriales and their antimicrobial resistance in green sea turtles captured adjacent to the central Great Barrier Reef (GBR) and proximate to urban development. Cloacal swabs were taken from 73 green turtles between 2015 and 2016. A total of 154 out of 341 Gram-negative bacterial isolates were identified as Enterobacteriales that represent 16 different species from 9 different genera. The dominant isolates were Citrobacter (30.52%), Edwardsiella (21.43%) and Escherichia (12.34%). The resistance against 12 antibiotics belonging to 6 different classes was determined. The isolates showed highest resistance to β-lactam antibiotics (78.57%) followed by quinolone (50%) and tetracycline classes (46.1%). Approximately one-third (37.7%) of the isolates identified exhibited multidrug-resistance. Isolates recovered from rehabilitated turtles were significantly multidrug resistant (p < 0.009) compared to isolates from other study sites. These results provide baseline information on antimicrobial resistance while revealing gaps for further research to evaluate the level of pollution in the GBR.

Item ID: 49524
Item Type: Article (Research - C1)
ISSN: 1879-3363
Keywords: antibiotic resistance; Enterobacteriales; enteric bacteria; green sea turtle; Great Barrier Reef
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A version of this publication was included as Chapter 4 of the following PhD thesis: Ahasan, Md. Shamim (2017) Gut bacterial communities in healthy and compromised green turtles (Chelonia mydas) and an alternative treatment for gastrointestinal disorders. PhD thesis, James Cook University, which is available Open Access in ResearchOnline@JCU. Please see the Related URLs for access.

Funders: James Cook University
Date Deposited: 10 Jul 2017 22:23
FoR Codes: 31 BIOLOGICAL SCIENCES > 3107 Microbiology > 310701 Bacteriology @ 100%
SEO Codes: 92 HEALTH > 9299 Other Health > 929999 Health not elsewhere classified @ 100%
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