Experiments using a static bioassay system as a base to develop a focal control method for Dreissena polymorpha illustrate the potential usefulness of the plant molluscicides, Lemmatoxins, in the African soapberries, Phytolacca dodecandra or Endod. Endod at a dose higher than 15 mg/L is lethal to adult and juvenile zebra mussels, while a lower dose prevents their migration, adhesion, and aggregation. The molluscicidal activity could be removed by powdered activated carbon. Since infestation of zebra mussels is a long-term problem and waterworks vary in design and in location, a conceptual methodology for mitigation is suggested using Endod as the primary agent in combination with mechanical and chemical means to remove adult mussels from and to prevent aggregation in water intake pipes. Endod plants have been successfully grown as monocultures. Demands on large quantities of Endod usage in water intakes should stimulate further agri-cultivation to ensure continuous adequate supply.

Subject
Chemical compounds, Water, Materials, Piping, Absorption, Slurry, Toxicity, Storage, Extracts, Transportation, Powders, Carbon, Potable water
Keywords:
Endod, Dreissena, Molluscicides, Focal Control, P. dodecandra, Biofouling
© 1992 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1992
Association for Materials Protection and Performance (AMPP)
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