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Assessment of mercury pollution through mercury resistant marine bacteria in Bhitarkanika mangrove ecosystem, Odisha, India

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Title Assessment of mercury pollution through mercury resistant marine bacteria in Bhitarkanika mangrove ecosystem, Odisha, India
 
Creator Dash, Hirak Ranjan
Das, Surajit
 
Subject Mercury resistant bacteria
Mangrove
merA
Bhitarkanika mangrove ecosystem
Mercury pollution
 
Description 1109-1121
Level of mercury pollution by estimating the number of
mercury resistant marine bacteria is examined in this study. Total mercury
levels in the water and sediment samples were estimated between 0.14 and 0.66
ppb (0.00014 and 0.00066 ppm) and from 0.23 to 0.97 ppb (0.00023 to 0.00097
ppm) respectively. pH, temperature and salinity level of the water
samples were in the range of 7.13-7.16, 27.35-36.1ºC and 14.25-15.6 ppt
respectively during this period. Mercury resistant marine bacteria followed the
trend of mercury level and ranged from 2.60×103 to 7.05×104 CFU/mL and from
0.16×103 to 7.4×104 CFU/g in water and sediment respectively. Percentage of
mercury resistant bacteria varied from 0.12 to 89.28 in water and 0.14 to 88.88
in sediment. Some of the resistant isolates (positive for mer operon
mediated mercury resistance) were characterized further. They were found to be
under the genera Vibrio and Bacillus which can resist other toxic
metals (Cd, Zn, Pb, As) as well as antibiotics (AM, VA, NX, AZM, A, AC)
confirming the pollution level in the ecosystem.
 
Date 2016-06-23T16:30:47Z
2016-06-23T16:30:47Z
2014-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/28981
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(6) [June 2014]