Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Changes in the Physiological Performance and Energy Metabolism of an Estuarine Mysid 'Mysidopsis bahia' Exposed in the Laboratory through a Complete Life Cycle to the Defoliant DEF.
Author McKenney, C. L. ; Hamaker, T. L. ; Matthews., E. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL.
Publisher c1991
Year Published 1991
Report Number EPA/600/J-91/333;
Stock Number PB92-129709
Additional Subjects Animal physiology ; Water pollution effects(Animals) ; DEF-6 pesticide ; Defoliants ; Energy metabolism ; Zooplankton ; Life cycles ; Phosphorotrithioic acid/(tributyl-ester) ; Phosphorus organic compounds ; Toxic substances ; Lipids ; Marine biology ; Estuarines ; Oxygen ; Nitrogen ; Concentration(Composition) ; Exposure ; Toxicity ; Reprints ; Mysidopsis bahia
Library Call Number Additional Info Location Last
NTIS  PB92-129709 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 08/28/1992
Collation 15p
Measures of physiological performance and energy metabolism were made on an estuarine mysid (Mysidopsis bahia) exposed throughout a life cycle to the defoliant DEF. DEF concentrations > or = 0.246 microgram/l reduced survival through release of the first brood. Young production was completely arrested in DEF concentrations > or = 0.606 microgram/l, while concentrations > or = 0.085 microgram DEF/l reduced young production by the population. Concentrations > or = 0.140 microgram/l and > or = 0.085 microgram/l retarded growth rates in older juveniles and young adults, respectively, while stimulating respiration rates. Young mysids excreted less ammonia in DEF concentrations > or = 0.085 microgram/l. Higher O:N ratios during maturation of DEF-exposed mysids suggests greater reliance on energy-rich lipid substrates to support elevated metabolic demands, leaving reduced lipid for reproductive preparations.