Download or read book Ecophysiological Tolerances of the Pacific Oyster Crassostrea Gigas with Regard to the Potential Spread of Populations in South Australian Waters written by Kathryn Wiltshire and published by . This book was released on 2007 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Response of the Pacific Oyster Crassostrea Gigas to the South Australian Environment written by Benjamin Charles Baghurst and published by . This book was released on 2002 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summer Mortality of Pacific Oyster Crassostrea Gigas written by Jean-François Samain and published by Editions Quae. This book was released on 2008-02-13 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mass oyster mortalities have been known for many years throughout the world, but no strictly pathological explication has been found. This book describes how environmental influences, reproduction, stress, genetics, pathogens and temperature contribute to oyster summer mortality in France. An interaction model is derived from the results and recommendations are made for forecasting and managing risk factors.
Download or read book Pacific Oyster Crassostrea Gigas written by and published by . This book was released on 2003* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Pacific oysters are endemic to Japan, but have been introduced into a number of other countries including Australia. Most of these introductions have been for the purposes of aquaculture, with Pacific oysters the most widely cultured shellfish species worldwide. Pacific oysters were first introduced into south-eastern and western Australian waters for aquaculture. They later found their way into NSW waters, where they have spread and invaded intertidal habitats of many waterways"--Introduction.
Download or read book Alien Species Alert written by Laurence Miossec and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Review of Introductions of the Pacific Oyster Crassostrea Gigas Around the World and a Discussion of the Possible Ecological Consequences of Introducing the Species Into Victoria Australia written by Noel Coleman and published by . This book was released on 1986 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pacific Oyster Crassostrea Gigas Mortalities written by Charles E. Woelke and published by . This book was released on 1959* with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measured Effects of the Pacific Oyster Crassostrea Gigas on Water Quality for the Design of a Holding System written by Marcin Whitman and published by . This book was released on 1989 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Ocean Acidification on Multiple Life History Stages of the Pacific Oyster Crassostrea Gigas written by Emma B. Timmins-Schiffman and published by . This book was released on 2014 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: As global climate change accelerates, due in large part to increasing emissions of carbon dioxide and other greenhouse gases from fossil fuel use, agriculture, and large-scale changes in land use, natural ecosystems bear the consequences. For marine systems these include increased mean seawater temperature, changes in carbonate chemistry equilibria, and increased pollutant loading due to non-point run-off, among other effects. Human-induced environmental changes will not have the same magnitude of effect in all regions, but on average the changes occurring are rapid and significant. Natural populations will either need to acclimatize and/or adapt, or shift their ranges to enable continued existence. This dissertation explores the effects of ocean acidification on the Pacific oyster, Crassostrea gigas. 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 investigating the effects of environmental change on biology because they are not able to escape these changes, but must respond physiologically (acclimatize) if they are to survive. Due to this ecological history, oysters provide a model that allows us to explore potential physiological mechanisms that are needed in a response to specific environmental changes as well as the limits of these mechanisms. In the first chapter, the effects of elevated partial pressure of CO2 (pCO2, a major driver of ocean acidification) on oyster larvae are explored. Larvae were exposed to low pH during early development, a period that included the transition from energetic dependence on maternally derived lipids to dependence on exogenous resources. Larvae were found to experience a developmental delay at elevated pCO2, manifested as smaller size and slower rate of shell deposition. These significant effects of ocean acidification on early larval development may indicate a bottleneck in the oyster life cycle as the pH of marine waters decreases. Subsequent research has shown that these effects at early larval stages can carry over into later stages after settlement in another oyster species (Hettinger et al. 2012). In order to better understand the effects of environmental change on oyster physiology, we developed proteomic tools to explore changes in protein pathways in oyster gill (ctenidia) tissue. The second chapter explores the gill proteome (suite of expressed proteins) of adult oysters. Characterization of the proteome provides insight into the physiological mechanisms that may be available to the oyster during response to an environmental stress. The results revealed that the ctenidia proteome includes a diverse array of proteins that accomplish many functions and that it is a metabolically active tissue. The proteome sequencing lays the groundwork for exploring how ocean acidification affects various proteomic pathways in the tissue that acts as the interface between the oyster and its environment. Lastly, the adult oyster response to ocean acidification and a second stress are explored via proteomics, fatty acid profiles, glycogen content, shell microstructure, and mortality in response to heat shock. There was a significant impact of ocean acidification on oyster shell integrity, but no effects after one month of exposure on relative amounts of fatty acid, glycogen or response to acute heat shock. Through the proteomic analysis, we revealed an active and significant proteomic response to ocean acidification exposure, uncovering some of the mechanisms behind the observed macro-phenotypic changes. Additionally, the proteomic response to mechanical stimulation was largely altered between low and high pCO2, suggesting that ocean acidification can fundamentally change how oysters respond to a second stress.
Download or read book The Distribution and Demography of the Invasive Pacific Oyster Crassostrea Gigas and Native Olympia Oyster Ostrea Lurida in the San Diego River written by Jason Langevin and published by . This book was released on 2019 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Even though the introduction of the Pacific Oyster, Crassostrea gigas, to the west coast of North America, happened roughly a century ago, it has only been in the past 15 to 20 years that C. gigas has started to become an established and conspicuous species along Southern California's coast. The establishment of C. gigas in Southern California has the potential to heavily influence many native species, as it has done globally. In Southern California, this invasion is particularly relevant for the native Olympia Oyster, Ostrea lurida. The Olympia oyster has both historical and present-day threats to its population, due to overfishing, pollution, and exotic species introductions. Understanding the distribution and demography of both species at the relatively early stage of C. gigas establishment is important for future management of both species. In order to address this, sampling was conducted along the rip rap of the San Diego River, near its connection with the Pacific Ocean. Transects were laid down at the high, mid and low intertidal, and quadrats along these transects were sampled quarterly for one year. Densities, biomass, Condition Index, length frequencies, and Von Bertalanffy growth constants were used to look at the growth of the two species over this time period. For C. gigas, growth lines were also used as a tool to estimate age and growth. This work demonstrated that O. lurida densities were in fact much greater than those of C. gigas, but that these native oysters had greater numbers in the low intertidal and diminished as tidal height increased. Crassostrea gigas numbers also decreased with increase tidal height, although less dramatically than O. lurida. Even though there is a large size difference between the two species, growth rate constants found using the Von Bertanlaffy growth model (k) in the low- and mid-intertidal combined were found to be very similar, indicating similar growth rates. Further analysis of growth rates of C. gigas across tidal zones, using growth lines, demonstrated that the growth rate decreased as tidal elevation increased. This study on the demography on native and invasive oysters in San Diego provides a foundation of baseline scientific information against which future change can be assessed, and can also inform future research directions, such as investigations of how each species interacts independently with their environment and with one another.
Download or read book The Accumulation of Viruses by the Pacific Oyster Crassostrea Gigas Thunberg written by Brenda Elizabeth Hay and published by . This book was released on 1985 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigating Settlement of the Pacific Oyster Crassostrea Gigas in Southampton Water and the Potential Ability of the Green Crab Carcinus Maenas to Control Pacific Oyster Populations written by Chloe Bentley and published by . This book was released on 2016 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatfalls of the Non native Pacific Oyster Crassostrea Gigas in British Waters written by B. E. Spencer and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Supply chain Assessment of Marine Vibrios in Pacific Oysters in South Australia written by T. L. Madigan and published by . This book was released on 2007 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Induced Thermotolerance in the Pacific Oyster Crassostrea Gigas Thunberg written by Ally A. Shamseldin and published by . This book was released on 1999 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Temperature and Food Availability on Energy Partitioning and Growth in the Pacific Oyster Crassostrea Gigas Thunberg written by and published by . This book was released on 1991 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of the Nature of Pacific Oyster Crassostrea Gigas Thunberg Mortality written by Roger Saft Grischkowsky and published by . This book was released on 1975 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
