Acute Effects of (Bis)tributyltin Oxide on Marine Organisms. Summary of Work Performed 1981 to 1983
NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA
Pagination or Media Count:
The acute effects of bistri-n-butyltinoxide TBTO on six species of marine invertebrates were assessed to determine the relative toxicity of TBTO to a variety of organisms, and these results were compared with copper toxicity. Survival was the parameter measured for each species. Results indicated that TBTO was significantly more toxic than copper to all species by a factor of 10. In addition, organotin toxicity was roughly proportional to the number of butyl groups, i.e., monobutyltin less toxic than dibutyltin which was less toxic than tributyltin. The species tested fell into two categories resistant and sensitive. The 96-hour LC50S ranged between 15 amd 30 parts per billion ppb TBTO for the reistant species, which included Protothaca staminea, Mytilus edulis, Citharichthys stigmaeus, and Neanthes arenaceodentata. The 96-hour LC50S ranged between 1- and 2-ppb TBTO for the sensitive species, which included Metamysidopis elongata and Acartia tonsa. Keywords Antifouling coatings Toxicity.
- Coatings, Colorants and Finishes