Date of Award

Fall 12-18-2015

Degree Type


Degree Name


Degree Program

Earth and Environmental Sciences


Earth and Environmental Sciences

Major Professor

Dr. Mostofa Sarwar

Second Advisor

Dr. Patricia Williams

Third Advisor

Dr. Tumulesh Solanky

Fourth Advisor

Dr. Mark Zappi

Fifth Advisor

Mr. William Holmes


Heavy metal contamination in food is a worldwide concern. Man-made ponds are domestic sites in the production of Procambarus clarkii and Procambarus zonangulus, two edible species of crayfish. Ponds may be constructed in former sugar cane or rice fields. Crayfish farming is an ancillary seasonal business within the rice-growing season. The use of products to control insects, pests, and weeds in rice and sugar cane production, may cause an accumulation of heavy metals in the crayfish tail within pond structures. Arsenic, cadmium, copper, and zinc are heavy metals that are absorbed through the roots of and distributed through rice products. Metabolites associated with rice products are absorbed in the human body. Research suggests that metabolites associated with heavy metals cause disease in animals and humans.


The University of New Orleans and its agents retain the non-exclusive license to archive and make accessible this dissertation or thesis in whole or in part in all forms of media, now or hereafter known. The author retains all other ownership rights to the copyright of the thesis or dissertation.