The acute and chronic effects of cadmium on the estuarine mysid,Mysidopsis bahia

Abstract
Mysids, small shrimp-like Crustacea, proved to be a practical bioassay animal for investigating the effects of cadmium in seawater and may serve this purpose for other pollutants. In the laboratory under flow-through test conditions, the mysid,Mysidopsis bahia, was more sensitive to cadmium than other crustaceans tested. LC50 values were 15.5 μg/ℓ within 96 hrs and 11.3 μg/ℓ during a 17-day life cycle, whereas LC50's for other selected crustaceans were between 120 and 720 μg/ℓ. Results of life-cycle bioassays can aid in the establishment of water quality criteria for marine and estuarine organisms.