A Comparison of the Biochemistry and Physiology of the Eastern Oyster, Crassostrea virginica, and the Asian Oyster, Crassostrea ariakensis

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dc.contributor.advisorPaynter, Kennedy Ten_US
dc.contributor.authorHarlan, Nicole Porteren_US
dc.contributor.departmentMarine-Estuarine-Environmental Sciencesen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2007-09-28T15:02:47Z
dc.date.available2007-09-28T15:02:47Z
dc.date.issued2007-08-13en_US
dc.description.abstractThe Chesapeake Bay Foundation, US Environmental Protection Agency, and the Chesapeake Bay Commission, requested research on the introduction of the Asian oyster, Crassostrea ariakensis, to help restore the fishery and ecosystem function of the native Eastern oyster, Crassostrea virginica. In order to augment the role of C. virginica in Chesapeake Bay, C. ariakensis will likely require tolerances to low dissolved oxygen similar to that of the native oyster. This research showed that triploid and diploid C. virginica lived significantly longer than C. ariakensis under anoxic conditions, although the oxygen consumption rates of diploid oysters did not differ between species. Free amino acid pools in the gill tissue of oysters exposed to normoxia or hypoxia were analyzed. Alanine increased in both species during hypoxia, indicating the use of alternative metabolic pathways. Aspartate was consumed by C. virginica during hypoxia, confirming the use of a pathway coupling glucose and aspartate fermentation. Differences in the free amino acid pools of these two species suggest an explanation for the disparity in anaerobic metabolism between C. ariakensis and C. virginica.en_US
dc.format.extent463413 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/7386
dc.language.isoen_US
dc.subject.pqcontrolledBiology, Animal Physiologyen_US
dc.subject.pqcontrolledEnvironmental Sciencesen_US
dc.subject.pquncontrolledCrassostrea virginicaen_US
dc.subject.pquncontrolledCrassostrea ariakensisen_US
dc.subject.pquncontrolledHypoxiaen_US
dc.subject.pquncontrolledChesapeake Bayen_US
dc.subject.pquncontrolledFree amino acid analysisen_US
dc.subject.pquncontrolledMetabolismen_US
dc.titleA Comparison of the Biochemistry and Physiology of the Eastern Oyster, Crassostrea virginica, and the Asian Oyster, Crassostrea ariakensisen_US
dc.typeThesisen_US

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