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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(8): 3668-3681
DOI: https://doi.org/10.20546/ijcmas.2017.608.444


Virulent Aeromonas veronii Strain BLB-01 Associated with Mass Mortality of Clarias batrachus (Linnaeus, 1758)
Arun Sharma1*, Thongam Ibemcha Chanu1, Muralidhar P. Ande2, P. P. Suresh Babu3, Karthireddy Syamala2, Pothu Srinivasa Rao2, Ashutosh D. Deo4 and Shrinivas Jahageerdar4
1ICAR-Central Institute of Fisheries Education, Kakinada Centre FWFF, Balabhadrapuram, Andhra Pradesh-533007, India
2ICAR-Central Institute of Fisheries Education, Kakinada Centre, Beach Road, Kakinada, Andhra Pradesh-533007, India
3ICAR-Central Marine Fisheries Research Institute, Kochi, India
4ICAR-Central Institute of Fisheries Education, Panch Marg, Off Yari Road,Mumbai-400061, India
*Corresponding author
Abstract:

The Asian catfish, Clarias batrachus of the family claridae, commonly known as ‘magur’ has high commercial importance in India. Aeromonas veronii has been reported as an important bacterial pathogen for aquatic animals and humans. Several reports have demonstrated the pathogenic effect of other Aeromonas species on aquatic animal; however in farmed C. batrachus no definitive data are available about A. veronii infection. In the present study, a virulent A. veronii strain BLB-01was isolated from the infected C. batrachus collected from freshwater fish farm Balabhadrapuram, East Godavari district, Andhra Pradesh, India and its identification was confirmed by 16S rRNA amplification and sequencing (Gen Bank accession number.MF370515). In addition two genes encoding aerolysin (aerA), haemolysin (hlyA) were found present in the isolate which further confirmed its potential virulence. Histologically, the infected muscle tissue showed erythrocyte and leukocyte infiltration due to bacterial infection. In vitro antimicrobial susceptibility test was also conducted by using effective antibiotic drugs to guide the treatment of the disease.


Keywords: Clarias batrachus, Aeromonas veronii,Mass mortality, Virulence test. Reisolate
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How to cite this article:

Arun Sharma, Thongam Ibemcha Chanu, Muralidhar P. Ande, P.P. Suresh Babu, Karthireddy Syamala, Pothu Srinivasa Rao, Ashutosh D. Deo and Shrinivas Jahageerdar. 2017. Virulent Aeromonas veronii Strain BLB-01 Associated with Mass Mortality of Clarias batrachus (Linnaeus, 1758).Int.J.Curr.Microbiol.App.Sci. 6(8): 3668-3681. doi: https://doi.org/10.20546/ijcmas.2017.608.444