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Please use this identifier to cite or link to this item: http://purl.org/purl/3930

Title: Gut Associated Lactic Acid Bacteria Isolated from the Estuarine Fish Mugil cephalus: Molecular Diversity and Antibacterial Activities against Pathogens
Other Titles: Molecular Diversity and Antibacterial Activities against Pathogens
Authors: Hatha, A A M
Shubhankar Ghosh
Einar, RingØ2
Deborah Gnana Selvam, A
Mujeeb Rahiman, K M
Naveen, Sathyan
Nifty, John
Keywords: Probiotics
Antibiotic resistance
Molecular diversity
Issue Date: 22-Jan-2014
Publisher: Sophia
Abstract: In the present study we address the issue on gut associated lactic acid bacteria (LAB) isolated from the intestine of estuarine fish Mugil cephalus using de Man Rogossa and Sharpe (MRS) agar. LAB isolates were identified biochemically and screened for their ability to inhibit in vitro growth of various fish, shrimp and human pathogens. Most of the LAB isolates displayed an improved antagonism against fish pathogens compared to shrimp and human pathogens. Selected representative strains displaying high antibacterial activity were identified using 16S rRNA gene sequence analysis. Of the selected strains Lactobacillus brevis was the most predominant. Four other species of Lactobacillus, Enterobacter hormaechei and Enterobacter ludwigii were also identified. It was also observed that even among same species, considerable diversity with respect to substrate utilization persisted. Considering the euryhaline nature of grey mullet (Mugil cephalus), the LAB isolated from the gut possessed good tolerance to varying salt concentrations. This finding merits further investigation to evaluate whether the isolated LAB could be used as probiotics in various fresh and sea water aquaculture
Description: International Journal of Aquaculture, 2014, Vol.4, No.01
URI: http://dyuthi.cusat.ac.in/purl/3930
Appears in Collections:Dr A A M Hatha

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