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Biochemical and toxigenic characteristics of Aeromonas spp. isolated from diseased mammals, moribund and healthy fish.
Abstract: In this study we describe biochemical, toxigenic and surface characteristics of 33 motile Aeromonas isolated from diseased mammals, 3 from moribund marine mammals, 24 from healthy fish and 4 from moribund fish. Aeromonas hydrophila, A. caviae and A. sobria were isolated from both mammals and fish but at a different incidence. Aeromonas hydrophila was the predominant species isolated from clinical specimens; it was isolated from pneumonia, wound infections, septicemia and abortion in horses, cattle and pigs. Aeromonas sobria was isolated from one mammal and 11 healthy fish. Aeromonas caviae was isolated in 2 cases from healthy fish and in 9 cases from diseased mammals. Variations in some biochemical tests including sorbitol, amylase and citrate, were observed between isolates from different sources. However, these differences did not allow the differentiation of isolates from diseased mammals and healthy fish. The majority of A. hydrophila isolates produced different extracellular products; A. sobria isolates produced less exotoxin. With A. caviae isolates no hemolysin, protease, enterotoxin or elastase were detected. There was no quantitative difference in hemolysin, protease, enterotoxin or elastase production between isolates from mammals and fish. It is suggested that A. hydrophila could be a potential pathogen for domestic animals, and fish may represent a potential reservoir of infection.
Publication Date: 1988-09-01 PubMed ID: 3188376DOI: 10.1016/0378-1135(88)90116-2Google Scholar: Lookup The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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This research examines the characteristics of Aeromonas bacteria, especially their toxicity, from different sources including diseased mammals, and healthy and diseased fish.
Types of Aeromonas
- The study analyzed 33 types of motile Aeromonas from various sources. The different types included Aeromonas hydrophila, A. caviae, and A. sobria.
- These species were found in both mammals and fish, though at different rates of incidence.
Prevalence of Different Aeromonas
- Aeromonas hydrophila was the most commonly isolated species from clinical samples. This type was found in cases of pneumonia, wound infections, septicemia, and abortion among horses, cattle, and pigs.
- Aeromonas sobria, on the other hand, was isolated from only one mammal and 11 healthy fish while Aeromonas caviae was found in 2 instances in healthy fish and in 9 cases in diseased mammals.
Biochemical Differences
- Notable differences were identified in some biochemical tests carried out. These tests involved sorbitol, amylase, and citrate.
- Despite these differences, the study investigators were unable to differentiate between isolates from diseased mammals and healthy fish.
Production of Extracellular Products
- Most isolates of A. hydrophila produced a variety of extracellular products. Isolates of A. sobria produced less of these exotoxins.
- For A. caviae, none of the samples produced detectable amounts of hemolysin, protease, enterotoxin, or elastase.
- No significant difference was found in the production of hemolysin, protease, enterotoxin, or elastase between isolates from mammals and fish.
Potential Implications
- The findings suggest that A. hydrophila could potentially be a pathogen for domestic animals.
- Fish may also serve as potential reservoirs for infection, suggesting a possible vector for disease transmission.
Cite This Article
APA
Lallier R, Higgins R.
(1988).
Biochemical and toxigenic characteristics of Aeromonas spp. isolated from diseased mammals, moribund and healthy fish.
Vet Microbiol, 18(1), 63-71.
https://doi.org/10.1016/0378-1135(88)90116-2 Publication
Researcher Affiliations
- Groupe de Recherche en Maladies Infectieuses du Porc, Faculté de Médecine Vétérinaire, Université de Montréal, St-Hyacinthe, Que, Canada.
MeSH Terms
- Aeromonas / enzymology
- Aeromonas / isolation & purification
- Aeromonas / metabolism
- Agglutination Tests
- Animals
- Bacterial Adhesion
- Bacterial Infections / microbiology
- Bacterial Infections / veterinary
- Enterotoxins / biosynthesis
- Fish Diseases / microbiology
- Fishes
- Hemagglutination
- Hemolysin Proteins / biosynthesis
- Mammals
- Pancreatic Elastase / biosynthesis
Citations
This article has been cited 5 times.- Miao Y, Zhao X, Adam FEA, Xie Q, Feng H, Ding J, Bai X, Wang J, Yang Z. Isolation and Identification of Aeromonas veronii in Sheep with Fatal Infection in China: A Case Report. Microorganisms 2023 Jan 29;11(2).
- AlYahya SA, Ameen F, Al-Niaeem KS, Al-Sa'adi BA, Hadi S, Mostafa AA. Histopathological studies of experimental Aeromonas hydrophila infection in blue tilapia, Oreochromis aureus. Saudi J Biol Sci 2018 Jan;25(1):182-185.
- Raverty SA, Rhodes LD, Zabek E, Eshghi A, Cameron CE, Hanson MB, Schroeder JP. Respiratory Microbiome of Endangered Southern Resident Killer Whales and Microbiota of Surrounding Sea Surface Microlayer in the Eastern North Pacific. Sci Rep 2017 Mar 24;7(1):394.
- Singh BR, Gulati BR, Virmani N, Chauhan M. Outbreak of Abortions and Infertility in Thoroughbred Mares Associated with Waterborne Aeromonas hydrophila. Indian J Microbiol 2011 Jun;51(2):212-6.
- Nzeako BC, Hastings TS, Ellis AE. Cultural conditions for Aeromonas hydrophila affect the production of haemolysins with differing host specificities. Antonie Van Leeuwenhoek 1991 Aug;60(2):67-72.
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