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Laboratory experiment to study the effect of salinity variations on benthic foraminiferal species - Pararotalia nipponica (Asano)

DRS at CSIR-National Institute of Oceanography

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Title Laboratory experiment to study the effect of salinity variations on benthic foraminiferal species - Pararotalia nipponica (Asano)
 
Creator Nigam, R.
Saraswat, R.
Kurtarkar, S.R.
 
Subject Benthic foraminifera
Pararotalia nipponica
Retarded growth
Salinity tolerance
 
Description Culture experiment has been carried out to observe the response of Pararotalia nipponica (Asano) to different salinities and its salinity tolerance limits. The specimens of P. nipponica kept in 33‰ saline water achieved optimum growth, while rest of the specimens maintained under either higher or lower salinities showed comparatively lower growth. Pararotalia nipponica specimens kept at 10‰ and 15‰ salinity started becoming opaque and later their test dissolved, within a span of 25 days. Towards the end of experiment in order to find the maximum salinity tolerance limit, the salinity was gradually increased to 100‰, in the culture dishes having specimens at 40‰ saline water and it was noted that P. nipponica specimens were alive even at 100‰ salinity. It is concluded that comparatively lower salinities are much more detrimental to the foraminiferal tests than higher salinities. Results are significant as the salinity response of benthic foraminifera is being used for environmental assessment.
 
Date 2006-08-22T12:42:09Z
2006-08-22T12:42:09Z
2006
 
Type Journal Article
 
Identifier Journal Geological Society Of India, vol.67(1); 41-46pp.
http://drs.nio.org/drs/handle/2264/251
 
Language en
 
Rights This digitized version of the paper hosted with the permission from Geological Society of India.
 
Format 142929 bytes
application/pdf
 
Publisher Geological Society of India