Distribution of multi-virulence factors among Aeromonas spp. isolated from diseased Xiphophorus hellerii

Das, Soumya; Aswani, R.; Jasim, B.; Sebastian, Keith; Radhakrishnan, E. K.; Mathew, Jyothis

doi:10.1007/s10499-019-00456-5

Cited by 13 publications

(15 citation statements)

References 44 publications

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“…Aeromonas spp. (68.09%) was the predominant isolate identified in the sample population, in agreement with the results of previous trials that identified infectious bacterial genera in ornamental fish [ 3 , 5 , 18 , 19 , 20 , 21 , 22 ]. Aeromonads are common in normal flora of water resources but could also develop as an opportunistic bacterial pathogen of aquatic animals when their immune systems are weakened [ 19 , 23 ], increasing the mortality of freshwater fish species [ 23 , 24 ].…”

Section: Discussionsupporting

confidence: 91%

“…(1.27%) were also observed in the random sample of ornamental fish obtained in our current study. These bacteria were also isolated from ornamental fish in previous studies [ 3 , 5 , 24 , 26 , 28 ].…”

Section: Discussionmentioning

confidence: 81%

“…Aeromonads have been correlated with a wide range of infections observed in freshwater animals, with the most frequently isolated species being A. hydrophila , A. sobria , A. caviae, and A. veroni . Moreover, these bacteria could also be pathogenic for human beings and have been incriminated as a possible cause of organ infections in humans, such as the gastrointestinal tract, skin, urinary tract, and muscle infections [ 4 , 5 , 24 , 25 ]. In addition, three species of Aeromonas, including A. hydrophila , A .…”

Section: Discussionmentioning

confidence: 99%

“…Asia is the major supplier of ornamental fish, especially countries in South East Asia such as Malaysia and Thailand [ 2 , 3 ]. The common and economically important species of ornamental freshwater fish are goldfish ( Carassius auratus ), koi carp ( Cyprinus carpiokoi ), red swordtail ( Xiphophorus hellerii ), and Zebrafish ( Danio rerio ) [ 1 , 4 , 5 , 6 ]. The ornamental aquaculture faces problems, especially from bacterial infections [ 4 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

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Occurrence and Antimicrobial Susceptibility Profiles of Multidrug-Resistant Aeromonads Isolated from Freshwater Ornamental Fish in Chiang Mai Province

et al. 2020

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Antimicrobials are commonly used to prevent and treat disease in the ornamental fish industry. However, the indiscriminate and comprehensive overuse of unregulated antimicrobials without appropriate diagnostic examination could contribute to the development of antimicrobial-resistant strains of bacterial pathogens. Moreover, human infections caused by pathogens transmitted from fish or the aquatic environment are quite common. The frequent detection of antimicrobial resistance in ornamental fish and their environments are inevitable so as to decrease the transfer of antimicrobial-resistant bacteria from aquatic sources to other environments. This study evaluated the prevalence of common bacteria species and the antimicrobial susceptibility profile in ornamental fish that were sold in an ornamental fish shop in Chiang Mai, Thailand. Aeromonas spp. were the most dominant of the isolated species from the ornamental fish samples and accounted for 68.09% of the total. Other species detected included Vibrio spp., Pseudomonas spp., and Citrobacter spp. A high percentage of resistance to amoxicillin (93.75%), oxytetracycline (79.69%), and erythromycin (75.00%) was observed among the Aeromonas spp. The antimicrobial resistance information for ornamental fish is very limited, and the results from this study indicate that the Aeromonas spp. are highly resistant to several important antibiotics. The results suggest that additional steps should be taken to educate store owners to reduce the indiscriminate use of these antibiotics to decrease the antimicrobial resistance in ornamental fish to potentially improve public health.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Occurrence and Antimicrobial Susceptibility Profiles of Multidrug-Resistant Aeromonads Isolated from Freshwater Ornamental Fish in Chiang Mai Province

et al. 2020

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“…In this study, the time of death of L. maculatus was concentrated within 24 h after L. maculatus was infected by A. veronii infection. This finding is consistent with the death of A. veronii infection in Carassius auratus gibelio and Xiphophorus helleri (12,38). This suggests that the rapid death of the host will accelerate the spread of the disease.…”

Section: Discussionsupporting

confidence: 82%

A First Report of Aeromonas veronii Infection of the Sea Bass, Lateolabrax maculatus in China

et al. 2021

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The sea bass, Lateolabrax maculatus is commercially farmed in Zhuhai, located in the Guangdong Province of China. L. maculatus in aquaculture have suffered acute death, characterized by ulcerations on the body surface, congestion, and hemorrhage in internal organs such as liver, kidney, and spleen. The dominant infecting strain of bacteria isolated from the kidneys of diseased fish was identified as Aeromonas veronii (strain 18BJ181). This identification was based on analysis of morphological, physiological, and biochemical features, as well as 16S rRNA and gyrB gene sequences. Drug sensitivity testing showed that the strain 18BJ181 isolate was resistant to four antibacterial drugs, including amoxicillin, madinomycin, penicillin and sulfamethoxazole, while moderately sensitive to erythromycin and rifampicin. The detection of growth characteristics showed that the strain 18BJ181 exhibited adaptability to the environment. In addition, some virulence genes, such as aer, act, gcaT, tapA and fla, were detected in the strain 18BJ181. The median lethal dosage of the strain 18BJ181 isolate in L. maculatus was 8.5 × 105 and 4.2 × 105 cfu/g under the conditions of intraperitoneal injection and intramuscular injection, respectively. The experimentally induced infection showed that the 18BJ181 isolate caused considerable histological lesions in L. maculatus, including tissue degeneration, necrosis, and different degrees of hemorrhage. These results provided evidence for a more comprehensive understanding of A. veronii strain 18BJ181 infection in L. maculatus.

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Characterization and pathogenicity of Aeromonas veronii associated with mortality in cage farmed grass carp, Ctenopharyngodon idella (Valenciennes, 1844) from the Central Himalayan region of India

Mallik

Joshi

Shahi

et al. 2020

Antonie van Leeuwenhoek

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Distribution of multi-virulence factors among Aeromonas spp. isolated from diseased Xiphophorus hellerii

Cited by 13 publications

References 44 publications

Occurrence and Antimicrobial Susceptibility Profiles of Multidrug-Resistant Aeromonads Isolated from Freshwater Ornamental Fish in Chiang Mai Province

Occurrence and Antimicrobial Susceptibility Profiles of Multidrug-Resistant Aeromonads Isolated from Freshwater Ornamental Fish in Chiang Mai Province

A First Report of Aeromonas veronii Infection of the Sea Bass, Lateolabrax maculatus in China

Characterization and pathogenicity of Aeromonas veronii associated with mortality in cage farmed grass carp, Ctenopharyngodon idella (Valenciennes, 1844) from the Central Himalayan region of India

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