Accession Number : ADA269869


Title :   Chronic Sublethal Effects of San Francisco Bay Sediments on Nereis (Neanthes) arenaceodentata; Bioaccumulation from Bedded Sediments


Descriptive Note : Final rept.


Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB


Personal Author(s) : Moore, David W ; Dillon, Thomas M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a269869.pdf


Report Date : Sep 1993


Pagination or Media Count : 42


Abstract : In previous studies with San Francisco Bay sediments, minimal chronic sublethal effects were detected (Miscellaneous Paper D-93-1 and another Miscellaneous Paper in preparation by Moore and Dillon). To ensure that the lack of effects was not due to a lack of contaminant uptake, a bioaccumulation experiment was conducted. Bioaccumulation from bedded sediments was evaluated following a 9-week exposure with the marine polychaete worm Nereis (Neanthes) arenaceodentata. Two sediments were evaluated, a contaminated San Francisco Bay test sediment and a clean control sediment from Sequim, WA. Animals were exposed as early juveniles through adulthood. Tissues were analyzed for metals, polyaromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and pesticides. Worms exposed to the contaminated San Francisco Bay sediment had significantly higher tissue residues of silver (0.30 mg/kg dry weight) and tributyltin (0.298 mg/kg dry weight). Conversely, tissue residues of control animals were significantly higher in cadmium (0.67 mg/kg dry weight) and lead (1.89 mg/kg dry weight). Small Amounts (0.02 mg/kg dry weight) of aldrin and dieldrin were measured in worms exposed to the contaminated sediment, while dieldrin and 8-BHC were found in Bioaccumulation, Neanthes, Chronic sublethal, San Francisco Bay, Dredged, Material. Sediment.


Descriptors :   *SEDIMENTS , *WORMS , *SAN FRANCISCO BAY , TEST AND EVALUATION , CONTROL , METALS , PREPARATION , MATERIALS , HYDROCARBONS , RESIDUES , POLYCHLORINATED BIPHENYLS , BAYS , DIELDRIN , ALDRIN , PESTICIDES , PAPER , SILVER , WEIGHT , CONTAMINANTS , CADMIUM , ANIMALS , DREDGED MATERIALS


Subject Categories : Biochemistry
      Solid Wastes Pollution and Control
      Water Pollution and Control


Distribution Statement : APPROVED FOR PUBLIC RELEASE