Effects on the oyster Crassostrea virginica caused by exposure to the toxic diatom Nitzschia pungens f. multiseries

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dc.acquisition-srcDownloaded from-Aquatic Sciences and Fisheries Abstractsen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorRoelke DLen_US
dc.contributor.authorFryxell GAen_US
dc.contributor.authorCifuentes LAen_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T17:14:05Z
dc.date.available2010-02-15T17:14:05Z
dc.date.issued1993 2003 May 31en_US
dc.degreeen_US
dc.description-en_US
dc.description-otheren_US
dc.description.abstractDomoic acid (DA) is produced by some diatom species and has become a problem to the shellfish industry. Nitzschia pungens f. multiseries a known DA producer, has been discovered in Galveston Bay, Texas. The region produces a large part of the total national oyster harvest. The threat of contamination or mortality to the oyster fishery due to N. pungens f. multiseries was investigated by performing feeding experiments with Crassostrea virginica using clonal cultures of the diatom. Emphasis was placed on oyster feeding behavior, tissue toxicity, and depuration. C. virginica readily fed on cell concentrations greater than natural blooms. The percentage of cells filtered from the seawater was consistently around 80%. The filtration rate ranged from 0.01 to 2.02 liters/hr. These variables along with oyster openness were not effected by the cell concentration, cell toxicity, or total toxicity of N. pungens f. multiseries. There were no detrimental effects observed to C. virginica. Whole body analyzes showed DA accumulation ranging between 1 and 2 mu g -g. The 'gut' had five times the toxicity of the adductor muscle and the gills/mantle -labial pulps tissue fractions. Approximately 70% of the total DA in the oyster resided in the 'gut.' Oysters showed no correlation between whole body toxicity and whole body weight. Whole body depuration of DA from C. virginica was slow over a 72 hour period (14%). Domoic acid outbreaks may not be confined to the coasts of North America. Two persons in the USA exhibited signs of ASP after eating smoked Korean oysters. Monitoring of several brands of this product was conducted, and domoic acid was not detecteden_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23027
dc.latitudeen_US
dc.locationen_US
dc.longitudeen_US
dc.notes85. Annu. Meet. Natl. Shellfisheries Association, Portland, OR (USA)0730-8000Abstract onlyEnglishJournal Article; Conference; SummaryMarineCS9408422en_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries50567.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesJournal of Shellfish Research [J. SHELLFISH RES.]en_US
dc.subjectASW,USA,Texas,Galveston Bayen_US
dc.subjectBehavioren_US
dc.subjectBiological poisonsen_US
dc.subjectContaminationen_US
dc.subjectCrassostreaen_US
dc.subjectCrassostrea virginicaen_US
dc.subjectdomoic aciden_US
dc.subjectfeeding behavioren_US
dc.subjectFiltrationen_US
dc.subjectFisheriesen_US
dc.subjectGalveston Bayen_US
dc.subjectMonitoringen_US
dc.subjectMortalityen_US
dc.subjectNeurotoxinsen_US
dc.subjectNitzschia pungens multiseriesen_US
dc.subjectNorth Americaen_US
dc.subjectoyster fisheriesen_US
dc.subjectOystersen_US
dc.subjectpathologyen_US
dc.subjectQ1 01221 Generalen_US
dc.subjectQ1 01261 Generalen_US
dc.subjectQ1 01483 Species interactions: generalen_US
dc.subjectQ1 01627 Food quality and standardsen_US
dc.subjectQ5 01524 Public health,medicines,dangerous organismsen_US
dc.subjectShellfishen_US
dc.subjectTexasen_US
dc.subjectToxicityen_US
dc.subjectToxicologyen_US
dc.subjectUSAen_US
dc.titleEffects on the oyster Crassostrea virginica caused by exposure to the toxic diatom Nitzschia pungens f. multiseriesen_US
dc.typeCONFen_US
dc.universityen_US
dc.vol-issue()en_US

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