Download or read book Tissue Respiration and Seasonal Acclimatization in the American Oyster Crassostrea Virginica Gmelin written by J. A. (Jonathan Arthur) Percy and published by 1968.. This book was released on 1968 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: The respiration rates of excised gill, mantle and adductor muscle of the American Oyster, Crassostrea virginica were measured by the Warburg technique, under various conditions of temperature and salinity and at various times during the summer and autumn. -- The relative rates of the tissues, when compared to gill respiration as a base, are similar to those reported for a number of other bivalves. -- The respiration rate of the mantle is inversely proportional to the Butler "condition" index of the oyster. This is attributed to glycogen accumulation. No significant correlation between "condition" index and either gill or adductor, muscle respiration was apparent, a probable consequence of the low, more stable glycogen content of these tissues. -- Dilution of the sea water medium to 13°/00 results in stimulation of gill respiration, has no significant effect on mantle respiration, and severely inhibits adductor muscle respiration. -- Rate - temperature curves over the range 12°C - 40°C are presented for all three tissues. The maximum Q10 coefficients for gill and mantle respiration and the minimum for adductor muscle respiration, occur in the 16°C - 20°C range. -- The respiration rates of gill and mantle, measured at 20°C in sea water of density 1.0250, declined by 16.8 percent and 18.4 percent, respectively, during late August - early September, indicating reverse acclimatization. The adductor muscle did not exhibit a corresponding decrease, and in fact its respiration rate may- have increased somewhat. -- It is concluded that the reverse acclimatization observed in gill, mantle and the intact animal is not attributable to a) seasonal fluctuations in "condition", because autumnal metabolic depression occurred over the whole "condition" range investigated, b) decreased ventilatory efficiency, because ventilation is not limiting under the experimental conditions or c) direct depressent action by the nervous system. The possible roles of intracellular changes and of nutritional and reproductive hormones, in the observed acclimatization effect are also discussed. -- The autumnal respiratory depression observed in the intact oyster can be partially accounted for by alterations in the metabolism of the major respiring tissues. -- A review of the occurrence of acclimatization in the Phylum Mollusca is presented.

Download or read book Tissue Respiration and Seasonal Acclimatization in the American Oyster Crassostrea Virginic Gmelin written by Jonathan Arthur Percy and published by . This book was released on 1968 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The American Oyster Crassostrea Virginica Gmelin written by Paul Simon Galtsoff and published by . This book was released on 1964 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The American Oyster Crassostrea Virginica Gmelin written by Paul Simon Galtsoff and published by . This book was released on 1964 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Ecological Energies of Growth Respiration and Assimilation in the Intertidal American Oyster Crassostrea Virginica Gmelin written by Richard F. Dame and published by . This book was released on 1971 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Ecological Energies of Growth Respiration and Assimilation in the Intertidal American Oyster Crassostrea Virginica Gmelin written by Richard Franklin Dame and published by . This book was released on 1974 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Thermal Effluent on the American Oyster Crassostrea Virginica Gmelin in Indian River Bay Delaware written by Jeff Tinsman and published by . This book was released on 1974 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Zoology written by and published by . This book was released on 1971 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Preliminary Investigation the Effect of Elevated Temperature on the American Oyster Crassostrea Virginica Gmelin a Sympo written by Joe A. Quick and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The American Oyster Crassostrea Virginica Gmelin Classic Reprint written by Paul S. Galtsoff and published by Forgotten Books. This book was released on 2016-11-26 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The American Oyster Crassostrea Virginica Gmelin The influence of other factors of the environ ment on the shape and sculpture of oyster shell has been reported by many investigators who noticed that specimens growing in calm water on flat surfaces have a tendency to acquire a round shape and to have poorly developed umbones. On soft bottom and overcrowded reefs the same species tend to form long and slender, laterally compressed bodies with hooklike umbones. Lamy (1929) observed that oysters attached to a pebble or shell and, therefore, slightly raised above the bottom, had deep lower valves, more or less radially ribbed. This type of structure, according to Lamy, offered greater resistance to dislodgment by currents or wave action. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book AMERICAN OYSTER CRASSOSTREA VIRGINICA GMELIN written by PAUL S. GALTSOFF and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Preliminary Investigation the Effect of Elevated Temperature on the American Oyster Crassostrea Virginica Gmelin written by J. A. Quick and published by . This book was released on 1971 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Responses of the American Oyster crassostrea Virginica gmelin to Thermal Effluent in the Chesapeake Delaware Bay Area written by University of Delaware. College of Marine Studies and published by . This book was released on 1981 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Environmental Factors on Respiration of Excised Tissues of American Oysters Grassostrea Virginica Gmelin written by Jonathan Arthur Percy and published by . This book was released on 1971 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metabolic End Products of the American Oyster Crassostrea Virginica Gmelin written by Harold W. Goforth and published by . This book was released on 1974 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Reproductive System of the American Oyster Crassostrea Virginica Gmelin written by Austina Kennedy and published by . This book was released on 1963 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Eastern Oyster written by Victor S. Kennedy and published by University of Maryland Sea Grant Publications. This book was released on 1996 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1966 Congress passed the National Sea Grant College Program Act to promote marine research, education, and extension services in institutions along the nation's ocean and Great Lakes coasts. In Maryland a Sea Grant Program -- a partnership among federal and state governments, universities, and industries -- began in 1977, and in 1982 the University of Maryland was named the nation's seventeenth Sea Grant College. The Maryland Sea Grant College focuses its efforts on the Chesapeake Bay, with emphasis on the marine concerns of fisheries, seafood technology, and environmental quality. The first comprehensive review of the biology of the eastern oyster in more than thirty years. The twenty-one chapters synthesize every aspect of oyster biology -- for instance, general anatomy, physiology, the circulatory system, reproduction, genetics, diseases -- and issues related to management and aquaculture.