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Effects of acidification of meroplanktonic oyster settlement in a tropical estuary

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Relation http://eprints.cmfri.org.in/10929/
http://nopr.niscair.res.in/handle/123456789/34480
 
Title Effects of acidification of meroplanktonic oyster settlement in a tropical estuary
 
Creator Kripa, V
Jenni, B
Chinnadurai, S
Khambadkar, L R
Prema, D
Mohamed, K S
 
Subject Edible oyster
 
Description 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. When the pH values in the estuary were low, the 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. Survival was highest (81%) in the control temperature of 27oC and less than 50% in 25 and 20oC. Treatment-wise differences in survival were significant (P
 
Date 2014
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/10929/1/IJMS_43_9_2014_Kripa_effect%20of%20acidification.pdf
Kripa, V and Jenni, B and Chinnadurai, S and Khambadkar, L R and Prema, D and Mohamed, K S (2014) Effects of acidification of meroplanktonic oyster settlement in a tropical estuary. Indian Journal of Geo-Marine Sciences, 43 (9). pp. 1675-1681.