Author Type

Graduate Student

Date of Award

1976

Document Type

Thesis

Publication Status

Version of Record

Submission Date

October 2026

Abstract

Analyses of microbial growth media containing carbon-labeled aldrin and dieldrin, strongly suggests that metabolic action on these pesticides, under optimal culture conditions, may be more extensive than previously assumed. Isolates from fresh, brackish, and littoral water, as well as adapted strains of the soil form, Arthrobacter oxydans, were cultured variously in selective media and enriched laboratory ecosystems. Growth studies of A. oxydans on pesticide-enriched media revealed that aldrin (12% decrease) and dieldrin, DDT, endrin and 2,4-D (9% decreases) were inhibitory, decreasing use of glucose and citrate. Quantitative thin-layer chromatography and 14C-labeled pesticide radioautography were used to detect pesticide degradation by A. oxydans strains, 2 Flavobacterium sp., 1 Achromobacter sp., 4 Alcaligenes sp., and 42 Pseudomonas sp. Data are compared with those from the literature to tentatively identify endrin, metabolites D, E, G and F, keto-endrin, endrin ketone and photodieldrin. Conversion of aldrin to dieldrin and vice-versa is reported.

Extent

82 p.

Comments

FAU Electronic Theses and Dissertations Collection|Thesis (M.S.)--Florida Atlantic University, 1976.|Charles E. Schmidt College of Science|FAU Electronic Theses and Dissertations Collection

Identifier

FADT13796

Format

pdf

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