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Showing 1 to 20 of 22 for “"Crassostrea gigas"”.
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Rhythms, feeding and respiration of the oyster Crassostrea gigas
… 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 compensation …
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Ocean acidification influences on physiology and epigenetics in the Pacific oyster (Crassostrea gigas)
… 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 environmental …
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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
… 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 native blue …
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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
… 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 organisms are ideal for …
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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
… OsHV-1 µVar detection occurred year round in C. gigas gill tissue, environmental (water, biofilm and sediment) and notably other macroinvertebrates. Vibrio splendidus was the only Vibrio spp. detected; it was also persistent throughout the year in oysters, invertebrate species and biofilm. This …
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Ecotoxicology of marine biotoxins in bivalve shellfish
… Mytilus edulis, Ruditapes philippinarum and Crassostrea gigas. Histological examination of the gill, mantle and hepatopancreas tissues revealed varying intensity of damage depending both on the tissue type and the species involved. At the cellular level, flow cytometric analysis of the …
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Marine invertebrate sperm: assessment of sperm quality using computer-aided sperm analysis
… Choromytilus meridionalis (Bivalvia), Crassostrea gigas (Bivalvia), Donax serra (Bivalvia) and Haliotis midae (Gastropoda) were investigated. The sperm morphology and base-line data were gathered concerning the sperm concentration, motility and sperm kinematic parameters using …
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History and status of oyster exploitation and culture in South Africa, and the role of oysters as vectors for marine alien species
… The culture of oysters is dependent on importing Crassostrea gigas spat mostly from Chile. Oyster production statistics are only available since 1985, but approximately two million Crassostrea gigas oysters were produced annually throughout the seventies and early eighties. Since then, production …
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Bioecología de la comunidad de macroalgas bentónicas de los arrecifes de ostras en bahía Anegada (Buenos Aires) : potencialidades de explotación y cultivo algal
… por el asentamiento de la ostra exótica Crassostrea gigas en Bahía Anegada. El objetivo principal fue caracterizar biológica y ecológicamente la comunidad de macroalgas bentónicas, explorando alternativas de cultivo de las mismas. Se realizaron estudios morfológicos para identificar y …
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Seasonal gonadal changes of adult oviparous oysters in Tomales Bay
<p>Two species of oviparous oysters, Crassostrea virginica (Gmelin, 1790), the Eastern oyster, and Crassostrea gigas (Thunbert, 1793), the Japanese oyster, were introduced into Tomales Bay, California, for commercial purposes. Because these oysters do not propagate in Tomales Bay, new shipments of …
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Acute Nitrate Exposure Causes Proteomic Changes Consistent with the Regulation of Reactive Oxygen and Nitrogen Species
… 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 6-hour exposure to …
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Sea-based Integrated Multi-Trophic Aquaculture: Investigation of a fish, bivalve and macroalgal co-culture system.
… 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 resource-use.<br/>The field trials …
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A Resource Management Analysis of Olympia and Pacific Oysters in Puget Sound
… market demand for oysters, Pacific oysters (<em>Crassostrea gigas</em>) were introduced from Japan in the early 1900s. Since then, Pacific oysters have become the most common species sold by shellfish growers in the Pacific Northwest due to their hardiness and fast growth. Olympia oysters have …
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Selected molluscs as monitors of metal pollution in coastal marine environments
… has been investigated using the species Crassostrea gigas, Crassostrea margaritacea, Perna perna and Choromytilus meridionalis. Metal concentrations in these and other species living along an unpolluted coast have been determined by atomic absorption spectrometry following chemical …
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Molecular detection of the apicomplexan parasite 'X' (APX) in bivalves in New Zealand
… rRNA sequences of flat oyster, Pacific oyster (Crassostrea gigas), Bonamia ostreae and Bonamia exitiosa. Several approaches, including using a dilution series method, direct comparisons with histology results, and testing on DNA of other apicomplexan species were performed to prove that the PCR …
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Microencapsulated diets to improve the productivity of bivalve shellfish aquaculture for global food security
… dosing strategy to fortify Pacific oysters (Crassostrea gigas) with vitamin A and D, and outlined how tailoring the micronutrients encapsulated and bivalve species reared could provide a low cost mechanism to tackle regional nutritional deficiencies directly through the food supply. I then …
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Naphthenic Acids: Synthesis, Characterisation and Factors Influendng Environmental Fate
… A toxicity assay in which developing oyster (Crassostrea gigas) embryos were inoculated with the individual monocyclic surrogate NAs demonstrated EC50 (Effective Concentrations for 50% of population) values ranging from 0.11 mg Lˉ¹ to 0.49 mg Lˉ¹. The results exhibited a clear quantitative …
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