Seasonal Fluctuations of Dieldrin Residues in the Tissues of the Marsh Clam, Rangia Cuneata, from a Texas Estuary

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dc.acquisition-srcDownloaded from-Water Resources Abstractsen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorPetrocelli SRen_US
dc.contributor.authorAnderson JWen_US
dc.contributor.authorHanks ARen_US
dc.contributor.otherTexas Journal of Science Vol 26, No 3-4, p 443-448, 1975en_US
dc.date.accessioned2010-02-15T17:15:36Z
dc.date.available2010-02-15T17:15:36Z
dc.date.issued443en_US
dc.degreeen_US
dc.descriptionNo-4en_US
dc.description-otheren_US
dc.description.abstractThe marsh clam, Rangia cuneata, was collected in Trinity Bay, Texas, in 1970 and 1971 and analyzed for residues of the chlorinated hydrocarbon insecticide, dieldrin, by gas-liquid chromatography. Analysis was carried out on ten individual clams randomly selected, shucked, and frozen. Recoveries of dieldrin from fortified clam tissue samples were above 85%. Clams collected in October and December 1970 had lower residues of dieldrin (mean and standard deviations were 7.9 plus or minus 1.5 ppb and 6.8 plus or minus 1.1 ppb, respectively) than those for February, April, and July (mean and standard deviations were 16.4 plus or minus 2.8 ppb, 16.6 plus or minus 1.4 ppb and 14.8 plus or minus 1.8 ppb respectively), or at least twice the fall values. These seasonal fluctuations in insecticide residues in tissue may be due to changes in river flow into the bay, with maximum tissue levels in months of large freshwater input. Also maturation of gonads and production of gametes in the spring and summer may cause higher whole body insecticide residue levels during these periods. (Buchanan-Davidson--Wisconsin)en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23233
dc.latitudeen_US
dc.locationen_US
dc.longitudeen_US
dc.notesen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries50815.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectBAYen_US
dc.subjectBioindicatorsen_US
dc.subjectClamsen_US
dc.subjectCommercial shellfishen_US
dc.subjectDieldrinen_US
dc.subjectEstuariesen_US
dc.subjectFLOWen_US
dc.subjectFluctuationsen_US
dc.subjectFRESHWATERen_US
dc.subjectPath of pollutantsen_US
dc.subjectPesticide residuesen_US
dc.subjectSeasonalen_US
dc.subjectSW 0890 Estuariesen_US
dc.subjectSW 3020 Sources and fate of pollutionen_US
dc.subjectSW 3030 Effects of pollutionen_US
dc.subjectTexasen_US
dc.subjectWater pollution effectsen_US
dc.titleSeasonal Fluctuations of Dieldrin Residues in the Tissues of the Marsh Clam, Rangia Cuneata, from a Texas Estuaryen_US
dc.typeJournalen_US
dc.universityen_US
dc.vol-issue()en_US

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