Hazardous materials in aquatic environments of the Mississippi River Basin. Quarterly project status report, July 1, 1993--September 30, 1993 [report]

1993 unpublished
Administrative Activities During this quarter, approval was given by DOE for purchase of equipment. Equipment purchases were initiated and much of the equipment has been received and installed. The committees in charge of coordination of sampling and analyses associated with the collaborative research groups continued to meet and address these issues. Sampling has been done in the lower part of Devil's Swamp and in the Devil's Swamp Lake area. In addition, _ extensive sampling has been done in
more » ... ayou Trepagnier and in Bayou St. John. During this period, Tulane and Xavier Universities continued working closely with Oak Ridge National Laboratories (ORNL). The ORNL 1993 summer student internship program wa_ completed. Plans were made for expanding the program to support 8 students next sumrner. Leonard Price, a Xavier University Chemistry professor and John Walz, a Tulane University Engineering professor each spent 5 weeks at ORNL. During this time these faculty worked with ORNL researchers exploring mutual interests and discussing possible future collaborations. In September, Drs. Carl Gehrs, Lee Shugart and Marshall Adams of ORNL, visited the Tulane and Xavier campuses. They presented two seminars and met with several of the investigators being supported by the ERWM contract. Tulane/Xavier project administrators participated in the Office of Technology Development's "New Technologies and Program Exhibition" in the Rayburn House Office Building on September 23 and in the Hart Senate Office Building on September 27. Principal Investigator:. A.A. Abdelghani, Ph.D. All subclusters reported having begun their research on the effects of contamination on aquatic organisms in Devil's Swamp. Staff from the respective subclusters have made trips to the swamp and collected fish, frogs, crawfish, plants, water and sediment for study. Staffing is generally complete (or is expected to be complete soon). Equipment has been ordered some of which has already been delivered. I. Ecology Subcluster. Members of the subcluster spent much of the quarter becoming familiar with the Devil's Swamp System. The group had difficulty accessing the northern section, and DISTRIBUTION OF THIS DOCUMENT IS UNLIMITEO MASTEB o 0 thus, _Ocusedtheir sampling on Devil's Swamp Lake, which is drained by the northern section of the swamp, and the middle and lower parts of the swamp proper. Water, sediment, crawfish, plants, frogs and fish were collected in three sampling trips in August and September. These will be used to establish contaminant levels in the lake and lower swamp, and for health assessment and cancer screening studies (fish). The stomachs were removed from fish and sent to Xavier for content analysis, which will help determine links in the foodchain. Foodchain organisms will be the fot_ls of future sampling expeditions. The electrofishing boat should be ready later in October. Cypress trees are being cored in Bayou Trepagnier and Cat Island on the Mississippi River; 55 cores have been taken from areas ranging from heavily contaminated to uncontaminated. Cores are awaiting heavy metal analysis. Collection coordinates have been computerized. Cores will be taken from trees on the next trip to Devil's Swamp. A colony of wading birds has been observed near Bush, LA. The colony is within feeding distance of the swamp system. Feathers and droppings have been collected, and observation of the birds' feeding habits in the swamp will begin. Examination of the fish digestive tracts from the Ecology group is being conducted by Xavier senior staff. II.Biomarkers: The normal neurological and immunological parameters of frogs not exposed to Devil Swamp contaminants are being studied and experiments to treat frogs with measured doses of pollutants have begun. In initial studies, methylmercury doses as small as 5 ppb dramatically altered tad pole development. A sampling trip into Devil's Swamp produced seven adult Rana catesbiana. Nervous tissues and immune cells were removed from these frogs to study indicators of exposure to heavy metal contamination. Additional sampling for frogs from Devil's Swamp is planned during the third quarter. Project Title: Evaluation of the Carcinogenic, Reproductive, and Developmental Effects of Mix_ure_ of Contaminants on the Medaka Fish (Oryzias latipes). Principal Investigator: William R. Hartley, Ph.D. Three experiments are c_wrently in progress. These experiments are to determine the developmental and reproductive effects of cadmium on the Japanese medaka using an embryo
doi:10.2172/10103582 fatcat:b5txhlyi7febnh3iyhh3vleipe