DSpace Collection:https://dyuthi.cusat.ac.in:443/jspui/handle/purl/40222024-02-12T04:37:26Z2024-02-12T04:37:26ZHeterotrophic Bacteria Associated with Healthy and Moribund Larvae of Penaeus monodon H.Milne EdwardsBright Singh, I SSarita,G Bhathttps://dyuthi.cusat.ac.in:443/jspui/handle/purl/40882014-07-21T10:11:39Z1996-11-01T00:00:00ZTitle: Heterotrophic Bacteria Associated with Healthy and Moribund Larvae of Penaeus monodon H.Milne Edwards
Authors: Bright Singh, I S; Sarita,G Bhat
Abstract: Heterotrophic bacterial flora of Pmonadon from an apparently healthy hatchery system as well as a pool with heavy mortality were isolated and studied. In the
healthy systems comparatively higher generic diversity with Pseudomonas, Acinetobacter, Bacillus, Micrococcus, members of the family Enterobacteriaceae
and coryneform group in the diminishing order of dominance was recorded. Meanwhile from the moribund larvae and rearing water Aeromonas and Pseudomonas
could be isolated in almost equal proportions. Strikingly, Aeromonas could not be isolated from the apparently healthy larval rearing system and its exclusive
occurrence in the sick culture system in comparatively higher percentage suggested its possible role in the mortality. They were found to be highly halophilic
exhibiting growth at 10% NaCl. On testing their sensitivity to twenty antibiotics, four of them (Streptomycin, Gentamycin, Methamine mandelate and
Cloramphenicol) were found to be effective on all the isolates of Aeromonas and Pseudomonas suggesting their possible application in the hatchery system in
times of emergency. While doing so, Streptomycin would do comparatively better than the others as the minimum inhibitory dose required was comparatively
lower (200ppm) within a period of 24 hours
Description: The Fourth Indian Fisheries Forum Proceedings
24-28. Ncvemher, 1996. Kochi . p. 327-331).1996-11-01T00:00:00ZBioremediation In Prawn Grow Out SystemsBright Singh, I Shttps://dyuthi.cusat.ac.in:443/jspui/handle/purl/40872014-07-17T20:30:30Z2002-11-01T00:00:00ZTitle: Bioremediation In Prawn Grow Out Systems
Authors: Bright Singh, I S
Description: Winter School on
'RECENT ADVANCES IN
DIAGNOSIS AND
MANAGEMENT OF DISEASES
IN MARICULTURE'
7-27 November, 2002
Course Manual,CMFRI2002-11-01T00:00:00ZUse Of Immunostimulants In Aquaculture ManagementBright Singh, I SRosamma, Philiphttps://dyuthi.cusat.ac.in:443/jspui/handle/purl/40862014-07-17T20:30:30Z2002-11-01T00:00:00ZTitle: Use Of Immunostimulants In Aquaculture Management
Authors: Bright Singh, I S; Rosamma, Philip
Description: Winter School on
'RECENT ADVANCES IN
DIAGNOSIS AND
MANAGEMENT OF DISEASES
IN MARICULTURE'
7-27 November, 2002
Course Manual Indian Council of Agricultural Research
Central ^Aarine Fisheries Research Institute2002-11-01T00:00:00ZOptimum growth requirements of nitrifying consortia developed from treated sewageBright Singh, I SKavitha, Ramachandranhttps://dyuthi.cusat.ac.in:443/jspui/handle/purl/40852014-07-17T20:30:37Z2003-12-03T00:00:00ZTitle: Optimum growth requirements of nitrifying consortia developed from treated sewage
Authors: Bright Singh, I S; Kavitha, Ramachandran
Abstract: The optimum growth requirements of two nitrifying consortia developed from treated sewage by enrichment technique
were determined by a series of experiments. There was total inhibition of nitrification at above 2.75 g r' NH/- Nand 2.5g r'
N02' - N and the ammonia oxidizing consortium preferred a pH at 8.5 and the nitrite oxidizing consortium a pH of 7.5 as the
optima for nitrification. Optimum temperatures were between 20° and 30°C for both the groups. As the rate of airnow was
increased from I to 7 Ilmin, the build-up of N02- -N increased 10-fold and the consumption of N02- -N increased by a factor
of 28.8 implying that the ammonia oxidizing consortium in a bioreactor required three times more aeration than that for
nitrite oxidizers for ex pressing their full nitrifying potential. These data directly contribute for developing a fermentati on
process for the mass production of nitrifiers as well as for designing bio reactors for nitrifying sewage.
Description: Indian lournal of Experimental Biology
Vol. 42, March 2004, pp. 314-3182003-12-03T00:00:00Z