Seasonal changes in levels of parasitism of Perkinsus marinus (Mackin, Owen and Collier) in Crassostrea virginica (Gmelin), with special reference to the limited association between parasitism and temperature and salinity

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dc.acquisition-srcDownloaded from-Aquatic Sciences and Fisheries Abstractsen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorSoniat TMen_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T17:14:38Z
dc.date.available2010-02-15T17:14:38Z
dc.date.issued1984 1983 Jun 6en_US
dc.degreeen_US
dc.description-en_US
dc.description-otheren_US
dc.description.abstractTwenty-six monthly samples of oysters (Crassostrea virginica ) were collected from Galveston Bay, Ttexas, from May 1979 to September 1981. Percent infection and weighted incidence (WI) of P. marinus were calculated for each monthly sample and factors known to be related to parasitism were measured (oyster length (L) and water temperature (T) and salinity (S). The variability of parasitism within a monthly sample was significantly less than the variation between samples. Highest and lowest values of WI were found during months representing every season of the year. A correlation between WI and S was significant (r = 0.51). Elevated levels of parasitism are known to be associated with high temperature and high salinity. Some summer samples, however, had the lowest WI values recorded, although they were always coupled with salinities below 10 ppt. Likewise, some winter samples (at S > 15 ppt) had high values of WI. Only approximately equals 49% of the variability in WI is explained by the TxS interaction; genetically determined resistance to disease is likely a major source of the unexplained variation. teraction; genetically determined resistance to disease is likely a major source of the unexplained variationen_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23104
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dc.locationen_US
dc.longitudeen_US
dc.notesAnnu. Meet. National Shellfisheries Association, Hilton Head Island, SC (USA)0730-8000Summary onlyEnglishJournal Article; Conference; SummaryMarineen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries50668.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesJournal of Shellfish Research [J. SHELLFISH RES.]en_US
dc.subjectASW,Galveston Bayen_US
dc.subjectCrassostreaen_US
dc.subjectCrassostrea virginicaen_US
dc.subjectGalveston Bayen_US
dc.subjectheaden_US
dc.subjectlevelsen_US
dc.subjectOystersen_US
dc.subjectparasitismen_US
dc.subjectPerkinsus marinusen_US
dc.subjectQ1 01422 Environmental effectsen_US
dc.subjectQ1 01484 Species interactions: parasites and diseasesen_US
dc.subjectQ1 01583 Shellfish cultureen_US
dc.subjectQ3 01583 Shellfish cultureen_US
dc.subjectSalinityen_US
dc.subjectSalinity effectsen_US
dc.subjectShellfishen_US
dc.subjectTemperatureen_US
dc.subjectTemperature effectsen_US
dc.subjectUSAen_US
dc.subjectVariabilityen_US
dc.subjectwateren_US
dc.subjectwater temperatureen_US
dc.subjectwinteren_US
dc.titleSeasonal changes in levels of parasitism of Perkinsus marinus (Mackin, Owen and Collier) in Crassostrea virginica (Gmelin), with special reference to the limited association between parasitism and temperature and salinityen_US
dc.typeCONFen_US
dc.universityen_US
dc.vol-issue()en_US

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