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Zebra mussels, first introduced in the Great Lakes in 1988, have spread rapidly to become a ma- jor environmental problem, Research by University of Toronto's Jan Spelt may provide clues to help control them. He and his research team are studying the strength of zebra mussel larvae attachment to sur- faces. The research team will measure resistance of larvae to various strengths of fluid flow and | New research ma also determine which surfaces deter larval attachment The larvae attach to solid sur- faces and develop hard shells. The zebra mussels grow quickly, and cover pipes and heat ex- changers. They ultimately restrict water flows in industrial plants. Filters are ineffective in stopping the larvae which are on- ly 250 micron in diameter. As a result of zebra mussels' tremendous rate of growth, ex- perts predict industries and utilities in the Great Lakes face billions of dollars in costs. "I believe it may be easier to prevent or control the initial at- tachment of the larvae then to try to dislodge the mussel once it is established," said Spelt. The mussels have been a pest in Europe for decades. The tradi- tional approach in European plants designed for zebra mussels is to chlorinate heavily. Chlorina- IT PAYS TO ADVERTISE ADVERTISE WHERE IT PAYS ELECTRICAL CONTRACTORS Dave Rankin ELECTRIC Ltd. -- specializing in -- WIRING CUSTOM HOMES & ADDITIONS HYDRO SERVICE CHANGES & ELECTRIC HEATING We also do small jobs & renovations. 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The U of T research will pro- vide indepth understanding of a key element of zebra mussels' development. As a result, in- dustries and facilities will obtain crucial information on which to base their choice of design of plants or treatment for the zebra mussel pestilence. Spelt and his team are taking a DENAULT CONTRACTING New Roofs -- Re-roofs -- Repairs Guaranteed Workmanship Free Estimates 432-5545 COUNTRY SIDING Siding Additions Soffit, Fascia Rec Rooms Eavestrough Decks Windows, Doors Roofing Call BILL JEFFREY (416) 985-3890 CUSTOM BUILT STAIRS | = Eric Huntington & Son ~ 29 Scugog St. N., 986 5518 Blackstock, Ont. © Technique Drywall SERVING ALL OF DURHAM REGION - please call - 986-5099 986-4984 DRYWALL Taping & Texturing Renovations - Rec Rooms Bathrooms FREE ESTIMATES non-traditional approach to the study of zebra mussels by focus- ing on both the biological aspects and the mechanics of the adhesion process. Spelt's expertise is sur- face thermodynamics and adhe- sion. 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