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Related Experiment Videos

Salmonella colonization in commercial pet turtles (Pseudemys scripta elegans).

S M Shane1, R Gilbert, K S Harrington

  • 1Department of Epidemiology and Community Health, School of Veterinary Medicine, Louisiana State University, Baton Rouge 70803.

Epidemiology and Infection
|October 1, 1990
PubMed
Summary

Salmonella contamination in turtle farm pond water and hatchlings is a concern. Gentamicin resistance in Salmonella strains poses a significant challenge to controlling its spread in Louisiana turtle populations.

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Area of Science:

  • Veterinary Epidemiology
  • Microbiology
  • Food Safety

Background:

  • An increase in Salmonella spp. prevalence in turtle hatchlings was observed during pre-export certification.
  • Commercial turtle farms in southern Louisiana were investigated to identify the source of contamination.

Purpose of the Study:

  • To determine the reason for the increased prevalence of Salmonella spp. in turtle hatchlings.
  • To identify the sources and serotypes of Salmonella contamination in turtle farms.

Main Methods:

  • An epidemiological survey was conducted on two commercial turtle farms.
  • Pond water, environmental specimens (eggs, hatcheries), and turtle hatchlings were sampled and tested for Salmonella spp.
  • Isolates were serotyped and tested for antibiotic resistance, specifically to gentamicin.

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Main Results:

  • Salmonella spp. (S. newport, S. arizonae, S. poona) were consistently found in pond water samples.
  • No Salmonella spp. were detected in environmental specimens from eggs and hatcheries.
  • A 12% prevalence of Salmonella (S. arizonae, S. poona) was found in hatchlings from a contaminated batch.
  • All tested Salmonella isolates, including those from 1988 and recent hatchlings, were resistant to gentamicin.

Conclusions:

  • Contaminated pond water is a likely source of Salmonella spp. in turtle hatchlings.
  • The emergence of gentamicin resistance in Salmonella spp. compromises existing control measures.
  • Urgent reevaluation of preventive strategies for Salmonella in turtle farms is necessary due to widespread gentamicin resistance.