Accession Number : AD0763410

Title :   Metabolism of Selected Pesticides by Marine Microorganisms.

Descriptive Note : Annual rept. no. 2, 1 Jun 72-31 May 73,

Corporate Author : SYRACUSE UNIV RESEARCH CORP N Y

Personal Author(s) : Sikka,Harish C. ; Miyazaki,Satoru ; Rice,Clifford P.

Report Date : 28 JUN 1973

Pagination or Media Count : 17

Abstract : A number of marine microorganisms including algae, bacteria, fungi and yeasts were treated for their ability to metabolize carbaryl (1-naphthyl-N-methyl-carbamate) and 1-naphthol. None of the species included in the study were able to degrade carbaryl to a significant extent. Conversion of 1-naphthol to ether-soluble and water-soluble metabolites was observed in cultures of Culcitalna achraspora, Halosphaeria mediosetigera, Humicola alopallonella, Aspergillus fumigatus, Serratia marina, Spirrillum sp. and Flavobacterium sp. The first three organisms were more effective in degrading 1-naphthol to water-soluble metabolites than the remaining species. A very small amount of carbaryl was metabolized to water-soluble metabolites by the algae Cyclotella nana and Dunaliella tertiolecta. 1-naphthol was more toxic to the algae Cyclotella and Dunaliella than the parent compound, carbaryl. Cyclotella was more sensitive to both carbaryl and 1-naphthol than Dunaliella. Treatment with .00002M carbaryl or 1-naphthol reduced photosynthetic CO2 fixation in Cyclotella. (Author)

Descriptors :   (*PESTICIDES, *MICROORGANISMS), (*MARINE BIOLOGY, PESTICIDES), (*INSECTICIDES, MICROORGANISMS), ALGAE, BACTERIA, FUNGI, YEASTS, METABOLISM, SENSITIVITY, TOXICITY, SERRATIA, ECOLOGY

Subject Categories : Microbiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE