Record Display for the EPA National Library CatalogRECORD NUMBER: 1 OF 10
|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,|
|Report Number||EPA/600/4-81/050; EPA-R-806121|
|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|
|Collation||63 pages : illustrations ; 28 cm|
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.
EPA 600/4-81-050, June 1981. PB81-218331. Includes bibliographical references (pages 49-52). Microfiche.