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 16 of 16 for “"Pacific oyster"”.
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Ocean acidification influences on physiology and epigenetics in the Pacific oyster (Crassostrea gigas)
… the effects of ocean acidification on the Pacific oyster (Crassostrea gigas) stress response and reproduction; elucidate how exposure history impacts phenotype; and explore the role of functional role DNA methylation in somatic and reproductive tissue. I investigated the effect of regional …
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Understanding and minimizing the impacts of host-pathogen-environment interactions in the Pacific oyster Crassostrea gigas
Globally, Pacific oysters Crassostrea gigas are experiencing significant mortalities especially in warmer summer months, as a result of a complex aetiology and a strong association with pathogens such as ostreid herpes virus-1 microVar (OsHV-1 µvar) and bacteria Vibrio aestuarianus. Such …
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Biotic and abiotic factors influencing the invasion success and ecological impacts of the Pacific oyster, Crassostrea gigas
… for aquaculture purposes worldwide, the Pacific oyster, Crassostrea gigas, has become one of the most globalised marine invertebrates. Ecological impacts associated with C. gigas invasions have been both positive and negative depending upon the context. However, invasions onto beds of the …
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The impact of UV radiation on the health and pathogen development of the Pacific oyster (Crassostrea gigas)
Pacific oysters Crassostrea gigas are cultured worldwide and play an important role in global food supply and the sustainable blue economy. Oyster culture sites in Europe, USA, Australasia, and Asia have been experiencing episodic summer mass mortality events. These mortality events can be severely …
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The Effects of Ocean Acidification on Multiple Life History Stages of the Pacific Oyster, Crassostrea gigas: Implications for Physiological Trade-offs
… the effects of ocean acidification on the Pacific oyster, <italic>Crassostrea gigas</italic>. Oysters are sedentary and inhabit a naturally variable environment (the intertidal zone) and thus may be pre-adapted to withstand rapid environmental change. Oysters and similarly sedentary …
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Understanding host, pathogen, environment dynamics in the marine environment with a particular focus on the Pacific oyster crassostrea gigas and its pathogens
… to investigate viral and bacterial infections in Pacific oysters in Ireland. In recent years, ostreid herpes virus-1 (OsHV-1) and variants, in particular OsHV-1 microVar (OsHV-1 µVar), and bacteria belonging to the genus Vibrio, specifically V. splendidus and V. aestuarianus, have become a major …
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Scales of variability of phytoplankton composition and biomass in Algoa Bay, South Africa
… in Algoa Bay. This research was motivated by Pacific oyster culturing at an Algoa Bay oyster farm. Time series of winds, sea surface temperatures (SSTs) and fluorescence were presented for the period from September/October 2010 to May/June 2012. The time series showed strong seasonal and …
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Acute Nitrate Exposure Causes Proteomic Changes Consistent with the Regulation of Reactive Oxygen and Nitrogen Species
… on aquatic life, we exposed gill tissue of the Pacific oyster, Crassostrea gigas, to nitrate and characterized changes in protein expression, using a gel-based proteomics approach. Of the 642 protein spots detected, we found that 24 proteins (15 identified) changed expression in response to a …
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Sea-based Integrated Multi-Trophic Aquaculture: Investigation of a fish, bivalve and macroalgal co-culture system.
… coculture of Atlantic salmon (Salmo salar, L.), Pacific oyster (Crassostrea gigas, Thunberg) and sugar kelp (Saccharina latissima, L.), in Scotland, and explored their production in relation to the background environment, historical aquaculture production modes, regulation and …
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A Resource Management Analysis of Olympia and Pacific Oysters in Puget Sound
… California Gold Rush, populations of Olympia oysters (<em>Ostrea lurida</em>) were nearly decimated by overharvest and water pollution in Puget Sound. To fill the market demand for oysters, Pacific oysters (<em>Crassostrea gigas</em>) were introduced from Japan in the early 1900s. Since then, …
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Seaweed diversity in Saldanha Bay and the effects of human activities
… number of world regions which culture the Pacific oyster. The other was distinct from other Grateloupias previously recorded in South Africa, and did not match any species in Genbank. The potential vector of introduction for Grateloupia turuturu, importation of the Pacific oyster Crassostreo gigas, …
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Molecular detection of the apicomplexan parasite 'X' (APX) in bivalves in New Zealand
The flat oyster (Bluff oyster, dredge oyster) Ostrea chilensis is an iconic seafood species in New Zealand that forms the basis of one of the oldest commercial fisheries in the country and is under development for aquaculture. However, the productivity of commercially important flat oyster …
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Understanding immune priming in Pacific oysters: A multi-omics exploration of transcriptomic, epigenetic and microbiome regulation
… For molluscs, widespread mass-mortalities of Pacific oysters (Magallana gigas) have occurred in recent years linked to infection with the bacterial pathogen Vibrio aestuarianus. Disease in farmed oysters is difficult to prevent or to treat and, in this context, immune priming has been proposed …
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Understanding immune priming in Pacific oysters: A multi-omics exploration of transcriptomic, epigenetic and microbiome regulation
… For molluscs, widespread mass-mortalities of Pacific oysters (Magallana gigas) have occurred in recent years linked to infection with the bacterial pathogen Vibrio aestuarianus. Disease in farmed oysters is difficult to prevent or to treat and, in this context, immune priming has been proposed …
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Rhythms, feeding and respiration of the oyster Crassostrea gigas
… valve movement rhythms was demonstrated for the Pacific oyster Crassostrea gigas under constant conditions of temperature, light, salinity, water level and food availability. Rhythms continued for up to 6 weeks until the experiments were terminated. The rhythms showed a high degree of temperature …