Accession Number : ADA175294
Title : Acute and Chronic Effects of Tributyltin on the Mysid Acanthomysis sculpta (Crustacea, Mysidacea).
Descriptive Note : Final rept. Jan-Oct 85,
Corporate Author : NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA
Personal Author(s) : Davidson,Brad M ; Valkirs,Aldis O ; Seligman,Peter F
Report Date : May 1986
Pagination or Media Count : 40
Abstract : Acute and chronic toxicity testing with tributyltin (TET) leachate derive from panels painted with antifouling paint was performed using the mysid species Acanthomysis sculpta (Crutacea, Mysidacea). Tests included a 96-hour acute static renewal, a long-term (63-day) mortality test a series of growth tests in which length and freeze-dried weight were measured, and a reproductive success test. All tests except the 96-hour acute study were performed in a flowthrough dosing regime ranging in concentrations from 0.03- to 0.52 micrograms/L TBT. The acute test was performed within a dose range of 0.25- to 0.66 micrograms/L TBT. In all experiments the dose levels were measured by hydride derivatization and atomic absorption detection. A 96-hour LC50 value for juveniles was determined at 0.42 micrograms/L TBT. Reproductive effects were the most sensitive sublethal indicator of TBT toxicity. A chronic value of 0.14 micrograms/L TBT was determined above which a significantly reduced release of viable juveniles was apparent. Length and weigh, in adult females, were affected in concentrations above 0.31 micrograms/L TBT. At higher concentrations the rate of mortality throughout a life cycle was significantly greater than that of controls. These results suggest that concentrations of TBT 0.14 micrograms/L affect the ability of the mature female to grow and reproduce. Based on the 96-hour LC50 and the most sensitive chronic value measured, reproduction, an acute/chronic ratio of 2.9 was calculated.
Descriptors : *TOXICITY , *BUTYL RADICALS , *TIN COMPOUNDS , *CRUSTACEA , TEST AND EVALUATION , RATIOS , DETECTION , GROWTH(GENERAL) , RATES , TEST METHODS , SENSITIVITY , FREEZE DRYING , REDUCTION , WEIGHT , DOSAGE , RELEASE , PAINTS , LIFE CYCLES , VALUE , ATOMIC SPECTROSCOPY , ANTIFOULING COATINGS , MORTALITY RATE , INDICATORS , ADULTS , FEMALES , REPRODUCTION(PHYSIOLOGY) , SUBLETHAL DOSAGE
Subject Categories : Toxicology
Distribution Statement : APPROVED FOR PUBLIC RELEASE