Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 122 for “"shellfish"”.
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Ecotoxicology of marine biotoxins in bivalve shellfish
… to effectively manage risk to human consumers of shellfish species that have accumulated marine biotoxins in their tissues. However, little is known about the impacts of HABs on shellfish health. This study used Solid Phase Adsorption and Toxin Tracking (SPATT) for the passive sampling of algal …
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Shellfish utilization and its effect on rocky shore biota in Transkei
The shellfish on the rocky shores along the Transkei coast experience intense exploitation from three different sources viz. commercial exploitation, tourist - induced exploitation and continued regular harvesting by the indigenous people. The question raised as a result of these combined factors …
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The reinvestigation of Hoffman's/Robberg cave - the artefactual and shellfish assemblages, 2007
This thesis documents the re-investigation of Hoffman's/Robberg Cave, a little known site located on the Robberg Peninsula near Plettenberg Bay on the southern Cape coast of South Africa. Previous excavations carried out at the site early in the twentieth century and again in the late 1950s are …
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Assessment of Current Guidelines for Culinary Preparation Methods of Fish and Shellfish
Consumers regularly decide to consume fish and shellfish raw or undercooked, which can cause foodborne illness due to product contamination or unsafe handling by the consumer. In order to be considered safe for consumption, intact fish and shellfish should be prepared to an internal temperature of …
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Sensory and Physical Assessment of Microbiologically Safe Culinary Processes for Fish and Shellfish
… illnesses are associated with fish and shellfish annually due to consumers choosing to eat seafood raw or undercooked and consumers not properly handling and preparing seafood. The 2009 FDA Food Code suggests intact fish and shellfish should be cooked to an internal temperature of 63°C …
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Microencapsulated diets to improve the productivity of bivalve shellfish aquaculture for global food security
… largest greenhouse-gas-emitting sector. Bivalve shellfish – including mussels, clams, and oysters – could be an invaluable component of our global food solution. Bivalves are nutrient rich, production has a lower environmental footprint than that of all other animal foods, and developing just 1% …
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Human Adenoviruses As Indicators Of Faecal Contamination And Pathogen Indices In The Environment And Shellfish
… of human enteric viruses in the environment and shellfish. The second aim was to consider human polyomaviruses (HPyVs) for the same roles. To gain a better understanding of the ecology of HAdV, their diversity in the environment was also investigated. Method development included validation of an …
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Land Use Impacts of Plastic Mulch Tomato Production and Evaluation of Sorbent Control on Shellfish Hatchery Operations
During the 1990s, shellfish hatcheries operating on the Eastern Shore of Virginia noticed an increase in mortalities of their clam larvae; it was suspected that this was a result of the deteriorating quality of the estuarine water used by aquaculture hatcheries. Many hatcheries obtain their …
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Virus in sewage, polluted water and molluscan shellfish: a critical assessment of coliphage as a possible indicator organism
This thesis begins with a comprehensive review of bacterial indicator systems and. by drawing on published material related to the transmission of enteric viral disease in the marine environment shows that bacterial indicators are inadequate for assessing risks from viruses. Literature in respect …
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Impacts of socioeconomic and demographic factors on household expenditure for disaggregate fish and shellfish in the United States
… consumer behavior relating to specific fish and shellfish products. The methodology used in this study is as follows: (1) organize and analyze at-home seafood consumption data for specific finfish and shellfish species by three product forms (canned, fresh and fresh frozen, and other prepared) …
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Sea shells ashore : a study of the role of shellfish in prehistoric diet and lifestyle at Eland's Bay, Southwestern Cape, South Africa
… aim of this research is to assess the role of shellfish in prehistoric diet and lifestyle with specific reference to the numerous archaeological sites in the vicinity of Eland's Bay (18°19'E 32°19'S). To give a wider regional context, available data on seven other sites along the southwest …
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Validation of shellfish isolates (glycosaminoglycans, GAGs) for development as a novel anti-tumour therapy for children : GAG action on lymphocytes/T-regulatory cells
… glycosaminoglycan (GAG) compounds isolated from shellfish. However the effect of GAGs on normal lymphocyte populations is still unknown, identifying this action is essential in order to evaluate any potential use of GAGs as a cancer chemotherapy treatment in children. Aim: In order to further …
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Spatial Variability and Seasonal Patterns of Co-Occurrence between two Marine Biotoxins in the Puget Sound and Implications for Public Health Management
Shellfish are of utmost cultural, recreational, and commercial importance in Washington State. However, the accumulation of marine algal biotoxins in shellfish can pose severe health risks to shellfish consumers. While Paralytic Shellfish Toxins (PSTs) have been well monitored in the state for …
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Investigating the distribution, seasonal dynamics and toxicity of Azadinium spinosum in Scottish waters using qPCR
… toxins which can contaminate filter feeding shellfish to dangerous levels. Toxin-contaminated shellfish flesh, when consumed by humans, can cause acute intense illness and chronic health issues.<br/>Shellfish biotoxins are monitored in Scottish shellfish by Food Standards Scotland (FSS), and …
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Determining Sources of Fecal Contamination in Two Rivers of Northumberland County, Virginia
The goal of monitoring the water quality of shellfish beds is to provide protection against transmission of water-borne infectious diseases. The Coan River and the Little Wicomico River contain shellfish beds that are closed to harvest due to contamination with fecal bacteria. These two rivers are …
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An Evaluation of the risks to food safety and shellfish farming in Great Britain,posed by marine biotoxins from, current and future emerging, marine microalgal species
… of chemotaxonomy to differentiate the source of shellfish intoxications, allowing for separation of two key GB saxitoxin producers, A. minutum and Alexandrium catenella. This technique could enhance routine monitoring data with little additional cost. Assessment of harmful microalgal taxa …
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Sedentism among the Archaic fisher-folk of northern Chile: A malacological perspective
… has revealed that year-round collection of shellfish for food by the people of the Chinchorro Culture was not practiced. Additional shell demographics from the site of Quiani further support the oxygen isotope results. Radiocarbon dating revealed that the midden sample spanned the Classic …
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Determination of Urban Land Use Variables That Accurately Predict Fecal Coliform Levels In Shellfish Harvesting Waters Within Estuarine Salt Marsh Ecosystems of the Southeastern United States of America.
<p>Increasing urbanization of southeastern coastal areas has led to enhanced concern of the impacts of development on receiving waters. The increased use of Geographic Information Systems (GIS) at the county level has led to greater availability of land use data at larger scales. This newly, widely …
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The fisheries biology of two scallop species, Pecten maximus (l.) and Aequipecten opercularis (l.), in the waters around Shetland, Scotland.
… time.<br/>Recognition of the importance that shellfish fishing contributes towards<br/>maintaining a diverse economy in a rural area, coupled with concerns in the<br/>1990’s about the potential for overfishing, prompted by reductions in the<br/>abundance of some shellfish species, the Shetland …
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