Accession Number:

ADA192119

Title:

A Portable Environment Test System: A Field Assessment of Organotin Leachates--Test and Evaluation.

Descriptive Note:

Final rept. May-Dec 86,

Corporate Author:

NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA

Report Date:

1987-11-01

Pagination or Media Count:

36.0

Abstract:

A Portable Environmental Test System PETS was evaluated with tributyltin TBT antifouling leachates in San Diego Bay over a 7-month period. Overall mean test concentrations were 0.065, 0.077 and 0.193 micro gram per liter TBT. Treatments were tested against ambient seawater controls with three replicates of each using 340-l tanks. Unfiltered seawater was pumped over a TBT coated panel, creating a TBT leachate diluted with ambient seawater in dilutionmixing units and distributed to test tanks. The following parameters were measured abundance and species diversity on fouling panels condition and gonad indices, and bioaccumulation in adult mussels Mytilus edulis condition indices and bioaccumulation in clams Macoma nasuta and growth rates in juvenile mussels and juvenile oysters. At all TBT concentrations, adult mussels and clams accumulated TBT and juvenile mussel growth was reduced. However, growth of juvenile mussels and oysters in PETS results suggest test animals in PETS tanks may have been under stress from the test system.

Subject Categories:

  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE