[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.7846/JKOSMEE.2013.16.2.138

Bio-Monitoring System Using Shell Valve Movements of Pacific Oyster (Crassostrea gigas) -I. Detecting Abnormal Shell Valve Movements Under Low Salinity Using a Hall Element Sensor

Oh, Seok Jin (Department of oceanography, Pukyong National University)
Lee, Jun-Ho (Training ship administrative center, Pukyong National University)
Kim, Seok-Yun (Department of oceanography, Pukyong National University)

Publication Information

Journal of the Korean Society for Marine Environment & Energy / v.16, no.2, 2013 , pp. 138-142 More about this Journal

Abstract

As an early warning system to reduce the damage of aquacultured mollusks due to low salinity water, we investigated the possibility of a biomonitoring system measuring the shell valve movement (SVM) of Pacific oyster (Crassostrea gigas) by using the Hall element sensor. In high salinity water of 27 psu, SVMs of Pacific oyster showed spikes which mean a relatively fast closing condition after opened condition of average 10-15 mm, and then the SVM showed back to opening condition slower than closing speed. In water salinity of 20-27 psu, the SVMs were similar to that of 27 psu. However, below 17 psu, it showed abnormal valve movements such as spending more time for shell closure. In 10 psu, we could not detected SVMs due to closed condition during experiment periods. Thus, if we quickly detect abnormal environmental variations like low salinity using bio-monitoring of SVM, it may be contribute to increased productivity by dramatically reducing damages in aquaculture.

Keywords

Low salinity water; Bio-monitoring system; Shell valve movement; Pacific Oyster; Hall element sensor;

Citations & Related Records

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