Incidence of haemolysin-positive and drug-resistant Aeromonas hydrophila in freshly caught finfish and prawn collected from major commercial fishes of coastal South India |
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Authors: | Thayumanavan Tha Vivekanandhan G Savithamani K Subashkumar R Lakshmanaperumalsamy P |
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Affiliation: | Department of Environmental Sciences, Bharathiar University, Coimbatore 641046, India. |
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Abstract: | The incidence of Aeromonas hydrophila in freshly caught finfish and prawns from four major commercial fish landing sites of coastal South India was studied for a period of one year. Among 514 analysed samples of seafood (410 finfish and 104 prawn), 37% of them (37.3% of finfish and 35.6% of prawn) were contaminated with A. hydrophila. A total of 255 strains of A. hydrophila were isolated. Of the total isolates, about 78.4% of them were producers of haemolysin. All strains were resistant to bacitracin and all were sensitive to chloramphenicol. The results indicate that the strains originated from high-risk sources. The presence of A. hydrophila is an indication of marine contamination. The increasing presence of haemolysin-producing multiple drug-resistant A. hydrophila in fish and prawn may become a potential human health hazard. |
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Keywords: | Multiple antibiotic resistance index Marine fish Haemolysin Aeromonas hydrophila |
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