Bacterial incidence in water and sand at fish landing sites along the Thoothukudi coast, Tamilnadu
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Date
2005-06
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Fisheries College and Research Institute,Thoothukudi
Abstract
Quantitative and qualitative analysis o( bacterial flora of samples of water and beach sand collected from four fish landing
sites of Thoothukudi was done for one year from June 2003 to May 2004. Although the bacterial counts varied widely in
water and sand samples from Thirespuram landing centre, Fishing harbour, South landing centre and Port beach landing
centre, there was no marked seasonal variation. There was no significant relationship between heterotrophic bacterial
density and physicochemical parameters (P> 0.05). The dissolved oxygen and ammonia levels varied considerably between
landing centres indicating the extent of pollution. Quantitative analysis showed dominance of Gram positive over Gram
negative bacteria in all samples except in sand samples from Thirespuram landing centre.
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