Download or read book Growth mortality condition and survival of the Pacific oyster Crassostrea gigas in relation with environmental and physical conditions cultured in the Tamar River Tasmania written by Antonio P. Mulipola and published by . This book was released on 1991 with total page 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 The Influence of Environmental Factors Upon the Growth and Survival of the Pacific Oyster Crassostrea Gigas Thunberg microform written by James R. Brown and published by National Library of Canada. This book was released on 1986 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Species Profiles written by Gilbert B. Pauley and published by . This book was released on 1988 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Species Profiles written by Gilbert B. Pauley and published by . This book was released on 1988 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1975 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Intensive Culture of the Pacific Oyster Crassostrea Gigas Thunberg in Heated Effluents written by Robert E. Malouf and published by . This book was released on 1978 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pacific Oyster Mass Mortality Studies written by and published by . This book was released on 1967 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Post harvest Quality of Selected Pacific Oysters Crassostrea Gigas Cultured in Kachemak Bay Alaska and Puget Sound Washington in October of 2009 and June of 2010 written by Stuart Rendell Thomas and published by . This book was released on 2012 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this project was to evaluate the growth, biochemical and fatty acid composition, physical and shell characteristics, and basic reproductive development of families of Pacific oysters (Crassostrea gigas) from the USDA-funded Molluscan Broodstock Program (MBP) planted in suspended culture in Kachemak Bay (KB), Alaska, and at an intertidal site in Thorndyke Bay (TB), Puget Sound, Washington. The MBP selects oysters to improve yields, growth, and survival, but little is known about the effects of selective breeding on other biological characteristics of selected oysters. Shell and meat characteristics of oysters from each of the seven highest-yielding MBP families were compared with those from non-selected control families at each site, which were sampled in October of 2009 and in June of 2010. Biometric and growth data, proximate compositions, fatty acid compositions, and basic degree of reproductive development were measured and compared by family, site, and sampling time. Selection improved yield, growth, and survival in MBP Cohort 20 oysters over three years of growout at KB. Colder water temperatures at KB relative to TB inhibited reproductive development, altering the biochemical composition of oysters within sites and between sampling times. Oysters grown at KB were slower growing and smaller when compared to TB, but higher in glycogen, Omega-3, and Omega-6 fatty acids (particularly docosahexaenoic acid: 22:6 Omega 3). Different latitudes and culture types were contributing factors for observed differences in growth, physiology, and composition, resulting in characteristically unique oysters from either site.
Download or read book Exploring the Mechanisms of Pacific Oyster Summer Mortality in Baynes Sound Aquaculture written by Malcolm Cowan and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, mortalities of unknown aetiology have occurred in Pacific oyster aquaculture in Baynes Sound, BC during the summer. Field studies were conducted to examine environmental, reproductive and microbial factors that could be contributing to these mortalities. In 2017, oysters were observed at three sites from July 5 to September 15. Each intertidal site had three modules containing seven stacked trays with 80 oysters per tray. Final mortalities ranged from 9.3 ± 1.9 to 38.8 ± 4.9% per module. The mortality per module correlated significantly with gonad length and the proportion of oysters that were female in a multiple linear regression model (R2=0.824, p=0.002). Vibrio aestuarianus, a well-documented pathogen of farmed Pacific oysters in France, was well represented in bacterial cultures from intertidal oysters in 2017 based on recA gene sequencing of 158 bacterial isolates. In 2018, juvenile Pacific oysters were monitored to characterize the onset of a summer mortality event in suspended culture. From May 11 to September 17, data on shell size, reproductive development, environmental conditions, and the microbial community of gill tissue was tracked at culture densities of 150, 300, 450, and 600 oysters tray-1. The onset of mortality was associated with a period of rapid growth, reproductive development, and elevated temperatures. Cumulative mortality per tray ranged from 34 to 75%, with the highest density trays having significantly lower mortality (p=0.023), smaller shell width (p=0.001), smaller shell length (p=0.002) and smaller gonad length (p=0.049) than the lowest density trays in a linear mixed-effects regression. Histology of oysters from August 12, during the mortality event, showed a mixed microbial infection in peripheral gill tissue. High-throughput sequencing of the 16S rRNA gene and qPCR of V. aestuarianus using species-specific recA primers suggest V. aestuarianus is temporally associated with summer mortality. Mortalities observed in 2017 and 2018 occurred in different age classes and with different oyster culture techniques, but all were associated with elevated water temperature, increased reproductive effort, and the presence of V. aestuarianus.
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:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1975 with total page 1258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Survival and Growth of Straight hinge Larvae of the Pacific Oyster Crassostrea Gigas Thunberg when Held Under Different Storage Conditions written by Lily Maria Goretti Panggabean and published by . This book was released on 1989 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Relationships Between Pacific Oyster Crassostrea Gigas Condition and the Environment written by Ronald E. Westley and published by . This book was released on 1964* with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth of Pacific Oyster Crassostrea Gigas and Related Fouling Problems Under Tray Culture at Seabeck Bay Washington written by Patricia Jean Michael and published by . This book was released on 1975 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Winter Mortality of the Pacific Oyster Crassostrea Gigas written by Arno K. wa Kang ̕ eri and published by . This book was released on 2003 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Relationship Between the Gametogenic Cycle of the Pacific Oyster Crassostrea Gigas and the Summer Mortality Phenomenon in Strains of Selectively Bred Oysters written by and published by . This book was released on 1983 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt:
