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Shell valve movement response of dark false mussel, Mytilopsis leucophaeta, to chlorination

S. Rajagopal,G. Velde,H. Jenner

Published 1997 in Oceanographic Literature Review

ABSTRACT

Abstract Shell valve movements of fouling mussel, Mytilopsis leucophaeta, have been studied in the presence of chlorine, using a mussel monitor. Data showed increasing shell valve closure with increasing chlorine concentration. Shell opening rates of M. leucophaeta at control experiments (0 mg litre−1 residual chlorine) were about 10 times more than those at 1 mg litre−1 residual chlorine. Continuous dosing of 0.75 mg litre−1 residual chlorine is required before shell movements are critically affected. Since current environmental stipulations do not permit this, a level of 0.5 mg litre−1 has to be used continuously during settlement periods of M. leucophaeta for their control. The results also indicate that M. leucophaeta is more tolerant to chlorine than other mussel species.

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