Record Display for the EPA National Library Catalog


Main Title Chitin Transformation and Pesticide Interactions in a Simulated Aquatic Microenvironmental System.
Author Portier, R. J. ; Meyers, S. P. ;
CORP Author Louisiana State Univ., Baton Rouge. Center for Wetland Resources.;Environmental Research Lab., Gulf Breeze, FL.
Year Published 1981
Report Number EPA-R-804976; EPA-600/D-82-081 ; ERL.GB-102
Stock Number PB82-205840
Additional Subjects Pesticides ; Chitins ; Carbohydrates ; Polysaccharides ; Microorganisms ; Azinphosmethyl ; Guthion
Library Call Number Additional Info Location Last
NTIS  PB82-205840 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 15p
Interactions between the structural animo-polysaccharide, chitin, and the organophosphate pesticide, azinphosmethyl (Guthion), have been studied in a controlled continuous flow-through microcosm. Pesticide-induced microbial population changes and increases in substrate utilization of chitin are noted. Significant increases in total heterotrophs and chitinoclasts occurred relative to continuous application of azinphosmethyl. Rapid uptake and utilization of chitin and its derivatives, enhanced by controlled azinphosmethyl additions, were examined using a tagged chitin breakdown product, N-(glucosamine-1-14C)-acetyl-D-glucosamine. Rates of utilization coincided with rapid 14CO2 release, assimilation of 14C by microbial cells, and increases in colony forming units. Data correlations, using microbial and enzymatic criteria, inoculate the application of the benchtop microcosm in analyses of compound impact and substrate turnover.