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Isolation and Identification of Bacterial Strains from Skin of Terrestrial Amphibians

Isolation and Identification of Bacterial Strains from Skin of Terrestrial Amphibians

Published on: June 17, 2025

Acinetobacter sp. HM746599 isolated from leatherback turtle blood.

Gerald Soslau¹, Jacob A Russell, James R Spotila

¹Office of Professional Studies in the Health Sciences, Drexel University College of Medicine, Philadelphia, PA 19102, USA. gsoslau@drexelmed.edu

FEMS Microbiology Letters

|June 29, 2011

Summary

A new Acinetobacter bacterium was found in leatherback sea turtle hatchlings, potentially infected in the egg. This hemolytic bacterium may pose a risk to both sea turtles and humans handling infected hatchlings.

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Isolation and Identification of Bacterial Strains from Skin of Terrestrial Amphibians

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The Application of Open Searching-based Approaches for the Identification of Acinetobacter baumannii O-linked Glycopeptides

The Application of Open Searching-based Approaches for the Identification of Acinetobacter baumannii O-linked Glycopeptides

Published on: November 2, 2021

Area of Science:

Microbiology
Marine Biology
Pathogen Discovery

Background:

Leatherback sea turtle hatchlings can harbor bacterial infections.
Acinetobacter species are known human pathogens, particularly in immunocompromised individuals.

Purpose of the Study:

To identify and characterize a novel bacterial isolate from leatherback sea turtle hatchling blood.
To assess the hemolytic and cytotoxic potential of the isolate.
To determine the potential risks to sea turtles and humans.

Main Methods:

Isolation and identification of bacteria from hatchling blood.
16S rRNA gene sequencing for phylogenetic analysis.
Hemolysis and cytotoxicity assays using human and sea turtle red blood cells.
Growth studies with different nutrient sources.

Main Results:

Acinetobacter sp. HM746599 was isolated from hatchling blood, likely infected in ovo.
The isolate is phylogenetically close to Acinetobacter beijerinckii and Acinetobacter venetianus.
Acinetobacter sp. HM746599 exhibits hemolytic/cytotoxic activity against human and sea turtle red blood cells.
Hemolysis is not due to soluble toxins; the isolate differs from related species in red blood cell lysis and nutrient requirements.

Conclusions:

Acinetobacter sp. HM746599 represents a potential threat to sea turtle health.
The bacterium's hemolytic properties suggest a possible role in disease pathogenesis.
There is a potential risk of transmission to humans, especially those handling infected hatchlings.