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Articles 31 - 35 of 35

Full-Text Articles in Physical Sciences and Mathematics

Contaminant Accumulation In Hard And Soft Shell Blue Crabs From An Urban Subestuary, Robert F. Mothershead Jan 1991

Contaminant Accumulation In Hard And Soft Shell Blue Crabs From An Urban Subestuary, Robert F. Mothershead

Dissertations, Theses, and Masters Projects

Muscle and hepatopancreas of blue crabs (Callinectes sapidus), collected from the Elizabeth River, Virginia, contained residues of polycyclic aromatic hydrocarbon (PAHs}, polychlorinated biphenyls (PCBs) and organochlorine pesticides. Analytical procedures involved dichloromethane extraction of lyophilized tissue, followed by molecular size and polarity-based purification of the extract. capillary gas chromatography with flame ionization detection and electrolytic conductivity detection was used for quantitation and tentative identification of the xenobiotic compounds. Mass spectrometry was used for confirmation of these identities. Contaminant concentrations were greater in hepatopancreas than in muscle in crabs from every site examined. Hepatopancreas PAH burdens were as high as 11 mg/kg …


The Effect Of Low Salinity On Established Infections Of Perkinsus Marinus (Apicomplexa: Perkinsasida) In The Eastern Oyster, Crassostrea Virginica, Lisa M. Ragone Jan 1991

The Effect Of Low Salinity On Established Infections Of Perkinsus Marinus (Apicomplexa: Perkinsasida) In The Eastern Oyster, Crassostrea Virginica, Lisa M. Ragone

Dissertations, Theses, and Masters Projects

No abstract provided.


Contrasts Between Tidal Freshwater And Estuarine Phytoplankton Growth On Intracellular And Recycled Nutrient Pools Over A Summer-Winter Seasonal Transition, Dean Douglas Kindler Jan 1991

Contrasts Between Tidal Freshwater And Estuarine Phytoplankton Growth On Intracellular And Recycled Nutrient Pools Over A Summer-Winter Seasonal Transition, Dean Douglas Kindler

Dissertations, Theses, and Masters Projects

No abstract provided.


Interactions Between Temperature And Tributlytin (Tbt) Toxicity To The Estuarine Mysid, Mysidopsis Bahia, Prentiss H. Balcom Jan 1991

Interactions Between Temperature And Tributlytin (Tbt) Toxicity To The Estuarine Mysid, Mysidopsis Bahia, Prentiss H. Balcom

Dissertations, Theses, and Masters Projects

No abstract provided.


Comparative Ecology, Morphology, And Population Genetics Of Black Triggerfish, Melichthys Niger, Kathryn D. Kavanagh Jan 1991

Comparative Ecology, Morphology, And Population Genetics Of Black Triggerfish, Melichthys Niger, Kathryn D. Kavanagh

Dissertations, Theses, and Masters Projects

No abstract provided.