Distribution and biochemical activity of heterotrophic bacterial population off Madras coast

Chandrika, V and Girijavallabhan, K G (1990) Distribution and biochemical activity of heterotrophic bacterial population off Madras coast. In: Proceedings of the first workshop on scientific results of FORV Sagar Sampada, 5-7 June 1989, Kochi.


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The quantitative distribution and biochemical activity of heterotrophic bacteria capable of multiplying in organic media of pertinacious composition from, shelf and slope waters off Madras coast between 1 lo 30' N and 14" 30' N were studied during March, 1986. The percentage of samples yielding more than 100 X 105 / ml colonies was only 12 in number in depth range 0-10 metres. Pigmented bacteria was encountered more in this depth range. Faecal coliform bacteria was not encountered throughout the observations. Total bacterial count varied from 8.6 X 105 to 3.08 X lo7/ ml in spread plate method of isolation. Pseudomonas, Vibrio, Alcaligenes, Flacvobacterium, Cytophaga, Agarobacterium and Chromobacterium formed the predominant flora isolated. Their correlation with environmental parameters like temperature, salinity, oxygen and pI 1 are discussed. The cultures were more proteolytic than amylolytic which indicated the process of organic decomposition and vigorous liberation of plant nutrients in these latitudes.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Distribution; biochemical activity; heterotrophic bacteria; Madras coast
Subjects: Fish and Fisheries > Biochemical Study
Marine Environment > Seawater Analysis
Divisions: CMFRI-Cochin > Fishery Environment
Depositing User: Users 171 not found.
Date Deposited: 13 Oct 2010 11:09
Last Modified: 09 Sep 2015 15:31
URI: http://eprints.cmfri.org.in/id/eprint/5125

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