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Effects of acidification on meroplanktonic oyster larval settlement in a tropical estuary

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Title Effects of acidification on meroplanktonic oyster larval settlement in a tropical estuary
 
Creator Kripa, V
Sharma, J H
Chinnadurai, S
Khambadkar, L R
Prema, D
Mohamed, K.S.
 
Subject Oyster culture
Spat settlement
Acidification
Tropical estuary
 
Description 1675-1681
Monthly variations in salinity, temperature and pH were
studied in relation to settlement of meroplanktonic oyster larvae on cultches
in Vembanad Lake,
a tropical estuary along the southwest coast of India. A strong correlation between
monthly pH values and oyster spat density (P=0.002) was evident. Wthe
spat settlement density was poor (4.5/cultch), which was nearly half of the
value (7.8/cultch) when the pH was alkaline. Experiments were conducted to
evaluate the effects of extremes of temperature (20 to 35oC) and pH
(6.5 to 8.5) on metamorphosis and survival of oyster larvae. In pH 6.5 there
was 100% mortality and complete dissolution of dead shells in 24 h. 27oC
and less than 50% in 25 and 20oC. Treatment-wise
differences in survival were significant (P
 
Date 2016-06-27T09:56:31Z
2016-06-27T09:56:31Z
2014-09
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/34480
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(9) [September 2014]