GBIC Abstracts (full text not available through Jack K. Williams Library)
Permanent URI for this collectionhttps://hdl.handle.net/1969.3/28658
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Item Uptake and accumula (dieldrin) by an estuarine mollusc, Rangia cuneata(1973 Nov) Petrocelli SR; Hanks AR; ANDERSON J; Bulletin of Environmental Contamination and Toxicology, Vol 10, No 5, P 315-320, November 1973 5 Fig, 11 RefCLAMS (RANGIA CUNEATA) WERE COLLECTED FROM TRINITY BAY IN TEXAS TO STUDY UPTAKE AND ACCUMULATION OF DIELDRIN FROM DILUTE SOLUTION. THE CLAMS WERE ACCLIMATED FOR 1 TO 2 WEEKS IN HOLDING TANKS AT 25C, 8.2 PH, AND 15.6 PERCENT SALINITY. THEY WERE THEN TRANSFERRED TO EXPERIMENT TANKS WITH WATER HAVING LIKE PROPERTIES AND A DIELDRIN CONCENTRATION MAINTAINED AT SAMPLES OF CLAMS AND WATER WERE REMOVED AFTER 12, 24, 36, 48, 60, AND 72 HOURS AND AFTER FREEZING AND CLEANUP OF THE MEAT SAMPLES WERE ANALYZED FOR PESTICIDE RESIDUE BY GAS-LIQUID CHROMATOGRAPHY. THE RESULTS INDICATED THAT RANGIA IS CAP CONCENTRATING DIELDRIN IN ITS TISSUE TO LEVELS FAR THE SMALLEST DIELDRIN RESIDUE IN EXPERIMENTAL CLAMS WAS 38.2 MICROGRAMS/LITER AFTER 12 HOURS EXPOSURE AND THE LARGEST 1226 MICROGRAMS/LITER AFTER 60 HOURS. APPARENTLY THE DIELDRIN IS NOT NOXIOUS ENOUGH IN THE CONCENTRATION USED TO AFFECT SIPHONING AND THUS IT IS ACCUMULATED IN QUANTITIES THAT MAY BECOME A THREAT TO THE ESTUARINE FOOD WEB. (MORTLAND-BATTELLE)