Role of bacillus and lactobacillus from Marine environment for sustainable Aquaculture practices (TH 128)

Ajitha, S (2004) Role of bacillus and lactobacillus from Marine environment for sustainable Aquaculture practices (TH 128). ["eprint_fieldopt_thesis_type_phd" not defined] thesis, Cochin University of Science and Technology, Cochin.

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Abstract

The studies on the "Role of Bacillus and Lactobacillus from Marine Environment for Sustainable Aquaculture Practices" was conducted during April 2001 to March 2002 in order to study ecophysiology and biodiversity of Bacillus and Lactobacillus in the marine environment and their role as potential probiotics in culture of Penaeus monodon juveniles. Viable isolates of Bacillus and Lactobacillus was selected for the probiotic study. 2. Data on physico-chemical parameters were also collected understand their influence on the occurrence and distribution of Bacillus and Lactobacillus. 3. The present observation suggests that aquaculture ponds always have a high load of bacterial flui'a and the apparent fluctuation in Bacillus and Lactobacillus count reflected complex nutritional and physicochemical variations within the ecological niches. 4. Adaptation was largely restricted to within certain salinity ranges (3- 24ppt) characteristic for the particular ecological group. The general drop in salinity to near fresh water condition observed during monsoon is due to dilution by the fresh water influx while the difference in surface

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