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

Report Date:

1986-05-01

Pagination or Media Count:

40.0

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 microgramsL TBT. The acute test was performed within a dose range of 0.25- to 0.66 microgramsL 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 microgramsL TBT. Reproductive effects were the most sensitive sublethal indicator of TBT toxicity. A chronic value of 0.14 microgramsL 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 microgramsL 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 microgramsL 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 acutechronic ratio of 2.9 was calculated.

Subject Categories:

  • Toxicology
  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE