Abstract

RESENDIZ, Eduardo  and  FERNANDEZ-SANZ, Helena. Biochemical identification of potentially pathogenic and zoonotic bacteria in black turtles (Chelonia mydas) from the Mexican Pacific. Abanico vet [online]. 2021, vol.11, e114.  Epub Oct 11, 2021. ISSN 2448-6132.  https://doi.org/10.21929/abavet2021.19.

Sea turtles naturally have gastrointestinal microbiota; however, opportunistic behavior and pathogenicity of some bacteria have also been reported. Therefore, it is important to generate information on possible risks to turtles and human health. Five monthly field monitoring were carried out with captures of Chelonia mydas in the Ojo de Liebre lagoon complex. Physical examinations were performed and their morphometries were recorded; oral and cloacal swabs were made and sowing in McConkey and TCBS culture media. Bacterial agents were isolated and identified using the API®20E system. Turtles’ body condition index and percentages of abundance and prevalence of each microorganism were calculated. Finally, the ratio between turtle s’ size and the presence of microorganisms was determined. Many Chelonia mydas (178) were captured, 523 isolates of gram-negative Enterobacteria from seven different species were obtained; the presence of proteobacteria in Chelonia mydas was not related to their age class. Among the microorganisms found, Vibrio fluvialis and Burkholderia cepacia are zoonotic. These studies allow us understanding the role of microorganisms in diseases of wild populations and risks to public health associated with their illegal consumption.

Keywords : bacteriology; microbiota; marine turtles; potential health threats; pathogens; zoonoses.

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