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Effect of pollution on the distribution of chaetognaths in the nearshore waters of Bombay

DRS at CSIR-National Institute of Oceanography

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Title Effect of pollution on the distribution of chaetognaths in the nearshore waters of Bombay
 
Creator Nair, V.R.
Gajbhiye, S.N.
Desai, B.N.
 
Description Chaetognath fauna inhabiting the polluted waters was compared with that of clean waters for evaluating the impact of pollution. Regular observations at 11 locations off Bombay coast indicated a steady decline in chaetognath population in areas polluted with sewage. Incidence of chaetognaths at sewage polluted areas was limited mostly to periods of high tide; with population density much less (max 10.m super(-3)) than that of areas free of pollution (max 40.m super(-3)). Sagitta bedoti was the only tolerant species in sewage polluted areas. Areas polluted with industrial effluent showed better water quality and chaetognaths maintained steady and comparable population density (14-17.m super(-3)). Sagitta bedoti dominated the area from June to December while S.oceania became abundant from January to May. A decrease in the intensity of pollution was associated with an increase in the population density of Sagitta enflata and S.pulchra. Krohnitta pacifica, S.bombayensis and S.robusta were restricted to areas free of pollution.
 
Date 2009-05-12T10:15:23Z
2009-05-12T10:15:23Z
1991
 
Type Journal Article
 
Identifier Indian Journal of Marine Sciences, Vol.20; 43-48p.
http://drs.nio.org/drs/handle/2264/3187
 
Language en
 
Rights Copyright [1991]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher NISCAIR, New Delhi