Studies on the salinity tolerance of the venerid clam, Paphia malabarica (Chemnitz)

Ram Mohan, M K and Velayudhan, T S (1998) Studies on the salinity tolerance of the venerid clam, Paphia malabarica (Chemnitz). Journal of the Marine Biological Association of India, 40 (1 & 2). pp. 185-188.

[img]
Preview
PDF
1908Kb

Abstract

Salinity tolerance, lethal lower salinity and mortality rates in different salinity treatments of the small (15-20 mm APM) and large (30-35 mm APM) venerid clam, Paphia malabarica were studied. The studies revealed that on sudden exposure from a pre-acclimation salinity of 22 ppt, both the size groups could tolerate a salinity range of 12 ppt to 40 ppt. The lethal lower salinity was determined based on 5Wo mortality. It was seen that larger clams are more tolerant to lower salinities. Between 20 ppt and 30 ppt both the size groups recorded no mortality. Observations on the conditioning time showed the fastest conditioning between 20 ppt and 30 ppt Large clams conditioned faster in lower salinities and vice versa in higher salinities.

Item Type:Article
Uncontrolled Keywords:Salinity tolerance; venerid clam; Paphia malabarica (Chemnitz)
Subjects:Molluscan Fisheries > Clam
Divisions:CMFRI-Cochin > Marine Capture > Molluscan Fisheries
ID Code:1945
Deposited By:Geetha P Mrs
Deposited On:04 Aug 2010 15:31
Last Modified:04 Aug 2010 15:31

Repository Staff Only: item control page