Download or read book The Histopathological Effects of Ionizing Radiation on the Pacific Oyster Crassostrea Gigas written by Michael Cary Mix and published by . This book was released on 1970 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Ionizing Radiation and Temperature on the Larvae of the Pacific Oyster Crassostrea Gigas written by Victor Avery Nelson and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Ionizing Radiation and Temperature on the Larvae of the Pacific Oyster Crassostrea Gigas written by and published by . This book was released on 1971 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of X and Gamma Irradiation on the Juvenile Pacific Oyster Crassostrea Gigas written by Steve Ray Trenholm and published by . This book was released on 1977 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two separate studies were conducted during this research project. Oysters were irradiated with 500 and 1000 rads and 5, 10, 20, 50, 75, 100, 150, and 200 krads in the first study in order to determine the effects of ionizing radiation on survival and growth rates. Two periods of high mortality were noted; the first occurred from 2 to 7 days postirradiation in oysters receiving 75 to 200 krads and was associated with an "acute lethal tissue degenerative syndrome." The second mortality period occurred from 40 to 60 days postirradiation in oysters exposed to 10 krads or more and was caused by a "lethal tissue degenerative syndrome." The LD-50 dose was found to be a complex function of time from the moment of irradiation until approximately 80 days postirradiation. The 238-day LD-50 value was 16.5 krads. The mean wet weight of oysters exposed to 20 krads was significantly less than that of the controls from 167 to 238 days postirradiation. Analysis of the results suggest a dose dependent wet-weight relationship in the 5 and 10-krad oysters; they did not weigh significantly less than the controls. Although not statistically significant, the mean wet weights of oysters exposed to 500 and 1000 rads exceeded that of the controls from 43 to 238 days postirradiation. In the second study, oysters were irradiated with 200 R, 600 R, 1000 R, 5 kR (X irradiation), and 8, 16, and 40 krads (gamma irradiation). The purposes of the second study were to analyze histopathologically, the degenerative syndromes and subsequent tissue repair processes in the stomach, gut, collecting ducts, and digestive tubules. Degenerative changes were seen only in the digestive tubules of 5- and 8-kR oysters while in oysters exposed to 16 and 40 krads, degenerative changes coincided with the lethal tissue degenerative syndrome noted in the survival-wet weight study. A tissue regeneration sequence was observed in the stomach, gut, collecting ducts, and digestive tubules of most oysters exposed to 16 krads and in a smaller number of oysters exposed to 40 krads. Tissue regeneration was first observed in the digestive tubules and subsequently in the stomach, gut, and collecting ducts. Repopulation of the digestive tubules involved reepithelialization of the tubule with large, undifferentiated crypt cells followed by their differentiation into secretory and absorptive cells. Tissue recovery in the stomach, gut, and collecting ducts was initiated by islands of small basophilic cells not previously described in these tissues. Rapid mitotic proliferation of these cells and their subsequent differentiation into basal epithelial cells, resulted in the reepithelialization and eventual recovery of these tissues.
Download or read book Effects of Ionizing Radition and Temperature on the Larvae of the Pacific Oyster Crassostrea Gigas written by Victor Avery Nelson and published by . This book was released on 1972 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Invertebrate Pathology Noncommunicable Diseases written by Albert Sparks and published by Elsevier. This book was released on 2012-12-02 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Invertebrate Pathology Noncommunicable Diseases discusses the taxonomic and phylogenetic aspects of invertebrate pathology, beginning with protozoans and progressing through the ascending taxonomic order to the chordates. The book is organized into seven chapters that cover the death and postmortem change; reaction to injury and wound repair; the physical and chemical injuries; the effects of venoms and biotoxins; the effects of ionizing radiation; and tumors and tumor-like growths. The opening chapter describes stages of events in death: necrosis; somatic death; gross and histological postmortem changes; and cellular depression and degeneration. The following chapter discusses the inflammatory response, called wound repair, to injury in invertebrates. This text describes the processes that occur after injury in many invertebrates and covers the general principles of physical, chemical, and biological injuries. Discussions on the effects of trauma, pressure and temperature changes, poisons, pesticides, detergents, venoms, biotoxins, and toxigenic algae are included. The book further examines the effects of ionizing radiation both on vertebrates and invertebrates, such as beta particles, gamma and X-rays, and neutrons. The concluding chapter describes the structures of tumor in invertebrates, focusing on hyperplasia or unusual proliferation of typical cellular components, in response to injury or parasitic invasion. With an ultimate objective to stimulate an acceleration of research effort in invertebrate pathology, the book is an invaluable source for invertebrate pathologists, immunologists, and parasitologists.
Download or read book Marine Fisheries Review written by and published by . This book was released on 1976 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1977-11 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
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 Commercial Fisheries Review written by and published by . This book was released on 1976 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ILAR News written by and published by . This book was released on 1976 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the National Shellfisheries Association written by National Shellfisheries Association and published by . This book was released on 1971 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Bibliography of Marine Radiation Ecology Prepared for the Seabed Program written by Vincent Schultz and published by . This book was released on 1980 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1971 with total page 1124 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 Professional Papers Series written by Florida. Dept. of Natural Resources. Marine Research Laboratory, St. Petersburg and published by . This book was released on 1971 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The International Mussel Watch written by and published by National Academies. This book was released on 1980-01-01 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
