Toxicity, accumulation, and release of three polychlorinated naphthalenes (Halowax 1000, 1013, and 1099) in postlarval and adult grass shrimp, Palaemonetes pugio.




Green, F.A., Jr.
Neff, J.M.

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The toxicity to and accumulation and release of three PCN's by postlarval and adult grass shrimp, Palaemonetes pugio, is reported. Postlarval grass shrimp were found to be slightly more sensitive than adults to Halowax 1099 and 1013, but were more tolerant to Halowax 1000. In general, it appears that the shrimp are less tolerant to trichloro- and tetrachloronaphthalene (Halowax 1099) then they are of PCN's of lower or high chlorination (Halowax 1000 and 1013). The results of the accumulation experiments partially account for these differences in toxicity. The degree to which the different compounds were accumulated corresponded to their relative degree of toxicity. This, in turn, could be directly related to the relative ability of the shrimp to metabolize or excrete PCN's of different chlorine content.


p. 399-407.


polychlorinated naphthalenes (PCNs), grass shrimp, Palaemonetes pugio, juveniles, adults, toxicity tests, chlorinated hydrocarbons