Aeromonas veronii, Associated with Skin Ulcerative Syndrome, Isolated from the Goldfish (Carassius auratus) in China

Lü, Aijun; Song, Yuegang; Hu, Xiucai; Sun, Jingfeng; Li, Li; Nie, Guoxing; Zhang, Chao; Pei, Chao

doi:10.46989/001c.20785

Cited by 3 publications

(4 citation statements)

References 21 publications

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“…Signs included lethargy, floating at the water surface, hemorrhages (red patches) on the skin, cutaneous ulcers, tail and fin rot, exophthalmia, distended abdomen, scale loss, and skin discoloration. These signs were also documented in previous studies of fish infected with bacterial pathogens, such as Aeromonas jandaei (Kumar et al 2015), Aeromonas veronii (Lu et al 2016), Aeromonas hydrophila (Mazumder et al 2021), Acinetobacter pittii (Malick et al 2020), Citrobacter freundii (Behera et al 2022), and Pseudomonas aeruginosa (Magdy et al 2014).…”

Section: Farm Investigationssupporting

confidence: 69%

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Identification and analysis of pathogenic bacteria causing outbreaks in Indian major carp aquaculture of Tripura

et al. 2023

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ObjectiveThe objective of this study was to investigate bacterial disease outbreaks in Indian major carp from aquaculture systems in Tripura, India, and identify the bacterial species associated with these outbreaks.MethodsA 3‐year surveillance was conducted in 8 districts of Tripura, during which 9 bacterial disease outbreaks were recorded. Fourteen bacterial strains isolated from diseased Indian major carp were selected and identified using phenotypic, molecular (16S rRNA gene), and phylogenetic analysis. In‐vitro pathogenicity studies were performed to assess the potential pathogenicity of the isolated bacteria.ResultsThe selected isolated strains were preliminarily identified under the genera Aeromonas (9 isolates), Acinetobacter (1 isolate), Citrobacter (3 isolates), and Pseudomonas (1 isolate). Molecular and phylogenetic analysis confirmed the species of the isolated bacteria, including Aeromonas jandaei (with strains COF_AHE09 and COF_AHE61), Aeromonas veronii (with strains COF_AHE13, COF_AHE52, COF_AHE55, COF_AHE56, and COF_AHE62), Aeromonas hydrophila (with strains COF_AHE51 and COF_AHE58), Acinetobacter pittii (with strain COF_AHE14), Citrobacter freundii (with strains COF_AHE20, COF_AHE57, and COF_AHE59), and Pseudomonas aeruginosa (with strain COF_AHE54). Behavioral and clinical signs observed in the diseased fish, such as lethargy, skin hemorrhaging, ulcers, fin and tail rot, pop eye, distended abdomen, scale loss, and skin discoloration, indicated the presence of bacterial septicemia. The in‐vitro pathogenicity studies highlighted the potential role of these bacteria in disease development, especially under environmental stress.ConclusionThis study provides valuable insights into the diversity of bacterial species associated with bacterial disease outbreaks in Indian major carp from aquaculture systems in Tripura. It serves as the first comprehensive investigation of its kind, contributing to our understanding of bacterial infections in Indian major carp.

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Section: Farm Investigationssupporting

confidence: 69%

“…2015), Aeromonas veronii (Lu et al. 2016), Aeromonas hydrophila (Mazumder et al. 2021), Acinetobacter pittii (Malick et al.…”

Section: Resultsmentioning

confidence: 99%

Identification and analysis of pathogenic bacteria causing outbreaks in Indian major carp aquaculture of Tripura

et al. 2023

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“…Aeromonas species as A. hydrophila, A. veronii, and A. jandaei are considered the major accused for increased mortality among wild and cultured fishes, resulting in massive economic losses [12]. A. veronii has recently been monitored as the common accused pathogen in outbreaks globally occurring in fish characterized by ulcerative syndrome in different fish species [22,56,57]. A. veronii is an opportunistic pathogen that may attack fish farms as a secondary infection or in immune disturbance cases as a result of stressor exposure [26,57].…”

Section: Bacterial Agents Implicated In Summer Mortality Syndrome Of Tilapia With Special Reference To a Veroniimentioning

confidence: 99%

“…A. veronii has recently been monitored as the common accused pathogen in outbreaks globally occurring in fish characterized by ulcerative syndrome in different fish species [22,56,57]. A. veronii is an opportunistic pathogen that may attack fish farms as a secondary infection or in immune disturbance cases as a result of stressor exposure [26,57].…”

Section: Bacterial Agents Implicated In Summer Mortality Syndrome Of Tilapia With Special Reference To a Veroniimentioning

confidence: 99%

Relationship Between the Productivity Losses of Tilapia and Aeromonas veronii Infection

Reda

El-Murr

Elhakim

et al. 2021

Zagazig Veterinary Journal

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Nile tilapia (Oreochormis niloticus) is considered one of the top cultured fish in Egypt and the second globally. The high demand for animal protein was associated with intensive fish culturing, which resulted in the emergence of disease outbreaks causing significant losses in tilapia aquaculture among the recent years. With special reference to bacterial outbreaks, Aeromonas veronii (A. veronii) is a recently reported bacterial pathogen affecting farmed tilapia and other fish species worldwide. A. veronii has been notified as a significant threat on Nile tilapia populations resulting in heavy mortality and was recorded to have a wide range of antibiotic resistance. Subsequently, recent publications focused on immunostimulant alternatives. The previous science data on summer tilapia mortality phenomena were outlined in this review article with special reference to A. veronii as an important pathogen. Clinical and postmortem symptoms, histopathological lesions, genetic diversity, and associations with others submitted to GenBank, diagnosis, control steps, and significance to public health were highlighted.

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Bacteriophages in the Control of Aeromonas sp. in Aquaculture Systems: An Integrative View

et al. 2022

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Aeromonas species often cause disease in farmed fish and are responsible for causing significant economic losses worldwide. Although vaccination is the ideal method to prevent infectious diseases, there are still very few vaccines commercially available in the aquaculture field. Currently, aquaculture production relies heavily on antibiotics, contributing to the global issue of the emergence of antimicrobial-resistant bacteria and resistance genes. Therefore, it is essential to develop effective alternatives to antibiotics to reduce their use in aquaculture systems. Bacteriophage (or phage) therapy is a promising approach to control pathogenic bacteria in farmed fish that requires a heavy understanding of certain factors such as the selection of phages, the multiplicity of infection that produces the best bacterial inactivation, bacterial resistance, safety, the host’s immune response, administration route, phage stability and influence. This review focuses on the need to advance phage therapy research in aquaculture, its efficiency as an antimicrobial strategy and the critical aspects to successfully apply this therapy to control Aeromonas infection in fish.

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Aeromonas veronii, Associated with Skin Ulcerative Syndrome, Isolated from the Goldfish (Carassius auratus) in China

Cited by 3 publications

References 21 publications

Identification and analysis of pathogenic bacteria causing outbreaks in Indian major carp aquaculture of Tripura

Identification and analysis of pathogenic bacteria causing outbreaks in Indian major carp aquaculture of Tripura

Relationship Between the Productivity Losses of Tilapia and Aeromonas veronii Infection

Bacteriophages in the Control of Aeromonas sp. in Aquaculture Systems: An Integrative View

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