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Effects Of Acid Exposure On The Ion Regulation And Seawater Adaptation Of Juvenile Coho Salmon Oncorhynchus Kisutch Microform
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Author :Powell, James Frederick Francis Publisher :National Library of Canada ISBN 13 :9780315202696 Total Pages :160 pages Book Rating :4.2/5 (26 download)
Book Synopsis Effects of Acid Exposure on the Ion Regulation and Seawater Adaptation of Juvenile Coho Salmon (Oncorhynchus Kisutch) [microform] by : Powell, James Frederick Francis
Download or read book Effects of Acid Exposure on the Ion Regulation and Seawater Adaptation of Juvenile Coho Salmon (Oncorhynchus Kisutch) [microform] written by Powell, James Frederick Francis and published by National Library of Canada. This book was released on 1984 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadiana written by and published by . This book was released on 1987 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ionic Regulation in Migrating Juvenile Coho Salmon, Oncorhynchus Kisutch by : Harry McCauley Miles
Download or read book Ionic Regulation in Migrating Juvenile Coho Salmon, Oncorhynchus Kisutch written by Harry McCauley Miles and published by . This book was released on 1967 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of copper and zinc on smoltification of coho salmon by : Harold W. Lorz
Download or read book Effects of copper and zinc on smoltification of coho salmon written by Harold W. Lorz and published by . This book was released on 1977 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Several Metals on Smolting of Coho Salmon by : Harold W. Lorz
Download or read book Effects of Several Metals on Smolting of Coho Salmon written by Harold W. Lorz and published by . This book was released on 1978 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Grays Harbor Estuary Sediment on the Osmoregulatory Ability of Coho Salmon Smolts, Oncorhynchus Kisutch by : David M. Kehoe
Download or read book The Effects of Grays Harbor Estuary Sediment on the Osmoregulatory Ability of Coho Salmon Smolts, Oncorhynchus Kisutch written by David M. Kehoe and published by . This book was released on 1982 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flow through bioassays were performed on smolting juvenile coho salmon with sediment from inner areas of Grays Harbor estuary. Previous work has shown that heavy metals have the ability to impair osmoregulatory capacity. Fish were exposed to these sediments for 9 days and then placed in seawater for 24 hours. Dredging activities occurring in the inner portion of Grays Harbor are not believed to be causing impairment of migrating smolts.
Book Synopsis Effects of Logging on Growth of Juvenile Coho Salmon by : Paul M. Iwanaga
Download or read book Effects of Logging on Growth of Juvenile Coho Salmon written by Paul M. Iwanaga and published by . This book was released on 1973 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exposure to Seawater Stimulates Lipid Mobilization from Depot Tissues of Juvenile Coho (Oncorhynchus Kisutch) and Chinook (O. Tshawytscha) Salmon by : Mark A. Sheridan
Download or read book Exposure to Seawater Stimulates Lipid Mobilization from Depot Tissues of Juvenile Coho (Oncorhynchus Kisutch) and Chinook (O. Tshawytscha) Salmon written by Mark A. Sheridan and published by . This book was released on 1988 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Survival and immune response of Coho salmon exposed to copper by : Donald G. Stevens
Download or read book Survival and immune response of Coho salmon exposed to copper written by Donald G. Stevens and published by . This book was released on 1977 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Changes in Intestinal Fluid Transport Associated with Smoltification and Seawater Adaptation in Coho Salmon (Oncorhynchus Kisutch) by : Nathan Lloyd Collie
Download or read book Changes in Intestinal Fluid Transport Associated with Smoltification and Seawater Adaptation in Coho Salmon (Oncorhynchus Kisutch) written by Nathan Lloyd Collie and published by . This book was released on 1981 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Mitochondria-rich Cells in Gill Epithelium of Coho Salmon Oncorhynchus Kisutch During Seawater Adaptation by : David Hung Yu Lin
Download or read book Development of Mitochondria-rich Cells in Gill Epithelium of Coho Salmon Oncorhynchus Kisutch During Seawater Adaptation written by David Hung Yu Lin and published by . This book was released on 1966 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study on the cellular differentiation of the gill structure in juvenile coho salmon (O. kisutch) with emphasis on the excretion of monovalent ions was performed upon animals maintained under both seawater and freshwater environments. 1. The excretion rate of sodium-24 was observed to be higher for animals adapted to sea water than for fresh water. 2. The rate of cellular renewal in the gill tissue determined through the utilization of tritiated thymidine that was incorporated into newly synthesized deoxyribonucleic acid. Animals adapted to seawater exhibited a greater rate of incorporation and turnover of labeled deoxyribonucleic acid than the freshwater animals. 3. Isolation and assay of enzymatic activity of gill mitochondria obtained from animals of the two different salinities suggested that seawater animals had a greater mitochondrial activity. 4. These experimental findings support the concept that during the adaptation to a hyperosmotic environment, the rise in the osmotic and ionic properties of the internal body fluids causes an acceleration of cellular differentiation within the gill filamental epithelium. This could result in either the formation of new cells laden with mitochondria and /or increased mitochondrial activity in the existing mitochondria-rich cells.
Book Synopsis Effects of selected herbicides on smolting of coho salmon by : Corvallis Environmental Research Laboratory
Download or read book Effects of selected herbicides on smolting of coho salmon written by Corvallis Environmental Research Laboratory and published by . This book was released on 1979 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seawater-acclimation and the Thyroidal Response to Thyrotropin in Juvenile Coho Salmon (Oncorhynchus Kisutch) by : Jennifer Lee Specker
Download or read book Seawater-acclimation and the Thyroidal Response to Thyrotropin in Juvenile Coho Salmon (Oncorhynchus Kisutch) written by Jennifer Lee Specker and published by . This book was released on 1987 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Survival, Preference, Blood Ion Regulation and Growth of Freshwater-adapted Pre-smolt Coho Salmon (Oncorhynchus Kisutch) Exposed to Various Salinites by : Robert George Otto
Download or read book Survival, Preference, Blood Ion Regulation and Growth of Freshwater-adapted Pre-smolt Coho Salmon (Oncorhynchus Kisutch) Exposed to Various Salinites written by Robert George Otto and published by . This book was released on 1968 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Chronic Exposure to Arsenic Trioxide on Smoltification, Downstream Migration, and Seawater Adaptation of Coho Salmon (Oncorhynchus Kisutch) by : John Warren Nichols
Download or read book Effects of Chronic Exposure to Arsenic Trioxide on Smoltification, Downstream Migration, and Seawater Adaptation of Coho Salmon (Oncorhynchus Kisutch) written by John Warren Nichols and published by . This book was released on 1981 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Some Physiological Changes in Coho Salmon (Oncorhynchus Kisutch) During Smoltification and Seawater Adaptation by : Leroy C. Folmar
Download or read book Some Physiological Changes in Coho Salmon (Oncorhynchus Kisutch) During Smoltification and Seawater Adaptation written by Leroy C. Folmar and published by . This book was released on 1979 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiology of Interrenal Function in Juvenile Coho Salmon (Oncorhynchus Kisutch) and Effects of Hatchery Rearing Practices by : Reynaldo Patiño
Download or read book Physiology of Interrenal Function in Juvenile Coho Salmon (Oncorhynchus Kisutch) and Effects of Hatchery Rearing Practices written by Reynaldo Patiño and published by . This book was released on 1988 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Periodic determinations of plasma hormone levels suggested that changes in interrenal activity are unrelated to changes in thyroidal or gonadal activity during development (smoltification) of juvenile coho salmon (Oncorhynchus kisutch). Moreover, in an experiment where fish were reared under various conditions of crowding and water inflow rate, it appeared that changes of interrenal activity were also unrelated to changes in gill Na/K-ATPase activity during smoltification. This finding placed some doubt on current hypotheses regarding the significance of interrenal tissue vis-a-vis osmoregulatory organs in fresh water during smoltification, since these hypotheses require a close positive correlation between changes in their activities. Also, the relationships I observed among the experimental rearing conditions (crowding and water inflow levels), water quality (oxygen and total dissolved ammonia levels), and the physiological status of the fish (plasma cortisol, thyroxine and triiodothyronine levels, and gill Na/K-ATPase activity) suggested that crowding stress itself is an important factor by which high rearing density affects the physiology of coho salmon. Lowering the rearing density from a high to a low level two weeks before sampling affected plasma cortisol but not plasma thyroxine or gill Na/K-ATPase. The main steroid secreted by unstimulated or ACTH-stimulated interrenal cells in vitro was cortisol. However, the main plasma corticosteroids were cortisol and cortisone, and the levels of both steroids increased during stress or seawater exposure. I concluded that cortisone arises from the peripheral transformation of cortisol and that a clarification of its significance is needed for an adequate understanding of corticosteroid physiology in teleosts. An increase in extracellular osmolality or sodium levels within the physiological range slightly enhanced the spontaneous release of cortisol by interrenal cells in vitro, but it did not affect the steroidogenic response of the cells to ACTH. Potassium enhanced steroid secretion only when elevated to pharmacological levels; changes within the physiological range of this ion did not have modulatory effects on ACTH-induced steroidogenesis. Thus, in contrast to findings in other classes of vertebrates changes in the levels of plasma monovalent ions or osmotic pressure may not be important factors directly regulating interrenal function in coho salmon. Treatment of interrenal cells with forskolin enhanced cortisol secretion in vitro, and hydrolysis-resistant ATP analogs depressed the response of the cells to ACTH. Analogs of cAMP, but not of cGMP, enhanced steroid secretion. Thus, as in most other vertebrates, cAMP is a major mediator of ACTH-induced steroidogenesis in interrenal cells of coho salmon. However, in contrast to previous findings in other vertebrates, phosphatidylinositol and cholera toxin did not affect interrenal steroidogenesis in coho salmon.
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