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Incidence of fish mortality in Tuticorin Bay, Gulf of Mannar

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Title Incidence of fish mortality in Tuticorin Bay, Gulf of Mannar
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Creator Diwakar,K
Joshi,K K
Asha,P S
 
Subject Fish mortality
Tuticorin Bay
Ammonia
 
Description Not Available
A study was conducted to assess the possible cause for fish mortality during 14-15th February 2008 in Tuticorin Bay. Analysis showed normal values of sea surface temperature, pH, dissolved oxygen and nutrient concentrations. The mean salinity (30.8 ppt) was lower than the normal (35.5 ppt). Though the concentration of chlorophyll was slightly higher than normal, no visible colour change was noticed in the Bay water. The possible entry of land drainage along with freshwater influx might have caused lower salinity and higher algal concentration. Analysis of water and dead fish tissue samples were carried out for metal load. The concentration of trace metals within safe limits ruled out the possibilities of fish mortality due to metal pollution. The estimated mean value of ammonia (1.09 mg. L-1) in water
was very much higher than the toxic limit of 0.1 mg. L-1, indicating the possibility of ammonia as the major cause of fish mortality in the Bay.
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Date 2021-09-15T09:54:19Z
2021-09-15T09:54:19Z
2009
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/62458
 
Language English
 
Relation Not Available
 
Publisher MBAI