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RECORD NUMBER: 2 OF 12

OLS Field Name OLS Field Data
Main Title Behavioral assays for effects of drilling muds on marine animals /
Author Hamilton, Paul V.
CORP Author University of West Florida, Pensacola. Dept. of Biology.;Environmental Research Lab., Gulf Breeze, FL.
Publisher U.S. Environmental Protection Agency, Environmental Research Laboratory,
Year Published 1981
Report Number EPA/600/4-81/050; EPA-R-806121
Stock Number PB81-218331
Subjects Offshore oil well drilling--Environmental aspects. ; Shellfish--Effect of water pollution on--Measurement. ; Environmental monitoring--Equipment and supplies. ; Oil well drilling, Submarine--Environmental aspects
Additional Subjects Mollusca ; Electrophysiologic recording ; Behavior ; Drilling fluids ; Bioassay ; Aquatic animals ; Concentration(Composition) ; Organic compounds ; Monitoring ; Particulates ; NTISEPAORD
Holdings
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Status
NTIS  PB81-218331 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 63 pages : illustrations ; 28 cm
Abstract
This report describes an electronic method for monitoring the shell movements and water pumping of bivalved molluscs, data on the influence of whole drilling mud and other particulate materials on the shell movements of scallops (obtained using the electronic monitor), and a Submersible Monitoring Unit (SMU) for recording these behaviors from bivalves held in field conditions. The electronic monitor employs integrated circuit chips and receives input from inductance transducer (shell movements) and thermistor (water pumping) sensors. Whole drilling mud caused significantly more major Rapid Valve Closures (RVC's) at concentrations of 400 ppm and higher, and a significantly greater cumulative magnitude of all RVC's at 200 ppm and higher. Barite, lignosulphonate and calcium carbonate revealed no clear dose-response relationship for these two shell movement parameters, but all three of these particulates produced similar patterns of effect. The SMU is completely self-contained; a battery powered circuit and tape recorder permit recording shell movement data on a magnetic tape, which is later retrieved for analysis.
Notes
EPA 600/4-81-050, June 1981. PB81-218331. Includes bibliographical references (pages 49-52). Microfiche.