Procambarus blandingi

Eversole 1980). It is probable that bioavailable concentrations from the water in each test did not exceed 1.0 pg/L. However, delayed mortality frequently occurs for extended periods after exposure, and the potential for adverse effects at the population level remains high (NAS 1978). Latent biocidal properties of mirex were documented for hsh (Van Valin et al. 1968 Koenig 1977) and crustaceans (Ludke et al. 1971 Hyde 1972 Cripe and Livingston 1977). Crustaceans were the most sensitive group examined. For example, the crayfish (Procambarus blandingi) immersed in nominal concentrations of 0.1 to 5.0 pg mirex/L for periods of 6 to 144 h died 5 to 10 days after initial exposure (Ludke et al. 1971). Immature crayfish were more sensitive than adults, and mortality patterns were similar when mirex was administered in the water or in baits (Ludke et al. 1971). 

Ludke, J.L., M.T. Finley, and C. Lusk. 1971. Toxicity of mirex to crayfish, Procambarus blandingi. Bull. Environ. Contam. Toxicol. 6 89-96. 

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