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The routine static toxicity test method for molluscan larvae is outlined. A new flow-through test method for molluscan larvae is presented with data from studies of halogen toxicity. The test involves containment of larvae in a mesh-covered chamber suspended in a small aquarium. The water in the basket is replenished every 7 min by raising and lowering the water level in the tank by means of an automatic tidal siphon. Improvements in the test system are under development.
acute toxicity, flow-through, mollusks, larvae, chlorine, bromine chloride, oyster, coot clam, invertebrates, bioassays, aquatic toxicology
Associate marine scientist, Virginia Institute of Marine Science and School of Marine Science, College of William and Mary, Gloucester Point, Va.