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Changes In The Food Habits Of Various Game Fishes After Stocking Rainbow Trout Salmo Gairdneri Richardson In The Cordell Hull Section Of The Cumberland River
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Book Synopsis Changes in the Food Habits of Various Game Fishes After Stocking Rainbow Trout, Salmo Gairdneri (Richardson) in the Cordell Hull Section of the Cumberland River by : Carl Thomas Swor
Download or read book Changes in the Food Habits of Various Game Fishes After Stocking Rainbow Trout, Salmo Gairdneri (Richardson) in the Cordell Hull Section of the Cumberland River written by Carl Thomas Swor and published by . This book was released on 1973 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Food Habits of Introduced Rainbow Trout, Salmo Gairdneri Richardson in Dale Hollow Reservoir, Tennessee by : Robert D. Ross
Download or read book Food Habits of Introduced Rainbow Trout, Salmo Gairdneri Richardson in Dale Hollow Reservoir, Tennessee written by Robert D. Ross and published by . This book was released on 1968 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Food Habits, Feeding Selectivity, Gastric Digestion Rates and Daily Ration of Rainbow Trout, Salmo Gairdneri Richardson, in Western Manitoba Winterkill Lakes by : Claude C. Holmstrom
Download or read book Food Habits, Feeding Selectivity, Gastric Digestion Rates and Daily Ration of Rainbow Trout, Salmo Gairdneri Richardson, in Western Manitoba Winterkill Lakes written by Claude C. Holmstrom and published by 1972.. This book was released on 1972 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food habits, feeding selectivity, digestion rates, and daily rations were determined for stocked rainbow trout in a Western Manitoba winterkill lake. Amphipods, cladocerans, and chironomid larvae were the most important food items with amphipods comprising more than 90% by weight of the food consumed from August to October in 1970 and 1971. Rainbow trout were diurnal in their feeding habits and fed more or less continuously throughout the day and early evening. Peak stomach fullness occurred in late afternoon. Food consumption was reduced or absent from about midnight to 6:00 a.m. The type of food organisms eaten at different times of the day did not change appreciably. Evidence suggested that feeding was limited primarily to the limnetic zone. Laboratory and field experiments on feeding selectivity indicated that prey availability was the most important factor in determining which foods were eaten while predator preference was of minor significance. Chironomid larvae, although apparently preferred by the trout, were negatively selected because of their inaccessibility. The more easily captured amphipods were positively selected. Terrestrial invertebrates, plant material, and many littoral organisms were avoided entirely. The relationship between state of digestion and time approximated a negative exponential. The number of hours required for 95% digestion at 5, 12, 17, and 22C was 54, 16, 14, and 9 respectively. Digestion rates were independent of meal size, food type, and fish size for the range of food items and fish weights used in the experiments. Several methods of determining daily ration were evaluated. Estimates based on the balanced equation of Winberg (1956) were considerably higher than those derived from data on digestion rates and diel feeding intensities. Food consumption rates of 3.8% to 5.9% of body weight per day were calculated by the former method for July, August, September, 1971.
Book Synopsis Food Habits, Feeding Selectivity, Gastric Digestion Rates and Daily by : Claude C. Holmstrom
Download or read book Food Habits, Feeding Selectivity, Gastric Digestion Rates and Daily written by Claude C. Holmstrom and published by . This book was released on 1972 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Food habits, feeding selectivity, digestion rates, and daily rations were determined for stocked rainbow trout in a Western Manitoba winterkill lake. Amphipods, cladocerans, and chironomid larvae were the most important food items with amphipods comprising more than 90% by weight of the food consumed from August to October in 1970 and 1971. Rainbow trout were diurnal in their feeding habits and fed more or less continuously throughout the day and early evening. Peak stomach fullness occurred in late afternoon. Food consumption was reduced or absent from about midnight to 6:00 a.m. The type of food organisms eaten at different times of the day did not change appreciably. Evidence suggested that feeding was limited primarily to the limnetic zone. Laboratory and field experiments on feeding selectivity indicated that prey availability was the most important factor in determining which foods were eaten while predator preference was of minor significance. Chironomid larvae, although apparently preferred by the trout, were negatively selected because of their inaccessibility. The more easily captured amphipods were positively selected. Terrestrial invertebrates, plant material, and many littoral organisms were avoided entirely. The relationship between state of digestion and time approximated a negative exponential. The number of hours required for 95% digestion at 5, 12, 17, and 22C was 54, 16, 14, and 9 respectively. Digestion rates were independent of meal size, food type, and fish size for the range of food items and fish weights used in the experiments. Several methods of determining daily ration were evaluated. Estimates based on the balanced equation of Winberg (1956) were considerably higher than those derived from data on digestion rates and diel feeding intensities. Food consumption rates of 3.8% to 5.9% of body weight per day were calculated by the former method for July, August, September, 1971.
Book Synopsis Food Habits of Smolt Steelhead Trout, Salmo Gairdneri Gairdneri Richardson, in the Alsea River, Oregon by : James David Messersmith
Download or read book Food Habits of Smolt Steelhead Trout, Salmo Gairdneri Gairdneri Richardson, in the Alsea River, Oregon written by James David Messersmith and published by . This book was released on 1958 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Saltwater Angler written by Wal Hardy and published by . This book was released on 1974 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sturgeon biodiversity and conservation by : Vadim J. Birstein
Download or read book Sturgeon biodiversity and conservation written by Vadim J. Birstein and published by Springer Science & Business Media. This book was released on 1997-05-31 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a synthesis of basic biological and conservation data for more than 30 species of sturgeons (Acipenseridae), paddlefishes (Polyodontidae) and their fossil allies in the order Acipenseriformes. Since the Jurassic, the four families of sturgeon-like fish have been restricted to the Holarctic, where until very recently they flourished in most major river systems. Today, however, virtually all species of sturgeons and paddlefishes face difficult conservation issues. Papers in the first section of this volume examine paleontology, systematics, evolution and basic biology of Acipenseriformes. The second section of this volume details current conservation status for most of the world's living species of Acipenseriformes. These papers mark the first attempt to make such a global review of recent data from across the northern hemisphere. The emerging picture is discouraging, for negative anthropogenic impacts range from overfishing to water pollution, to dams and water diversion projects, and all species are threatened to some degree. The third section of the volume considers specific human impacts and responses to conservation issues. These include: the Aral Sea ecological disaster and its impact on native sturgeons; a review of methods for restoring sturgeon populations; the use of molecular techniques in developing conservation strategies; the extreme sensitivity of sturgeons and paddlefishes to overfishing; and the history of a recently convicted caviar poaching ring. The volume's summary reviews the status of all extant species and notes future directions for research on behavior, ecology and population biology that could lead to better co-ordinated international conservation efforts.
Book Synopsis Fish Migration and Fish Bypasses by : Mathias Jungwirth
Download or read book Fish Migration and Fish Bypasses written by Mathias Jungwirth and published by Wiley. This book was released on 1998-09-23 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: International Conference on Fish Migration and Bypass Channels held in Vienna in September 1996. It covers the range of fish pass technologies currently in use throughout the world and attempts to develop a wider, more ecological perspective on this formerly engineering-orientated discipline. Emphasis is placed on enhancing an understanding of fish migration behaviour, and achieving optimum design to meet the behavioural requirements of all known migratory species. Additional attention is paid to comparing the European trend towards constructing nature-like bypass channels with the highly technical solutions dominant in North America.
Book Synopsis Brush Border Membranes by : Ruth Porter
Download or read book Brush Border Membranes written by Ruth Porter and published by John Wiley & Sons. This book was released on 2009-09-14 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Novartis Foundation Series is a popular collection of the proceedings from Novartis Foundation Symposia, in which groups of leading scientists from a range of topics across biology, chemistry and medicine assembled to present papers and discuss results. The Novartis Foundation, originally known as the Ciba Foundation, is well known to scientists and clinicians around the world.
Book Synopsis Upper Mississippi River Comprehensive Basin Study: Appendix A-B by : Upper Mississippi River Basin Coordinating Committee
Download or read book Upper Mississippi River Comprehensive Basin Study: Appendix A-B written by Upper Mississippi River Basin Coordinating Committee and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of Common Fishes of the Mississippi River at Keokuk by : Robert Ervin Coker
Download or read book Studies of Common Fishes of the Mississippi River at Keokuk written by Robert Ervin Coker and published by . This book was released on 1930 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin of the Bureau of Fisheries by :
Download or read book Bulletin of the Bureau of Fisheries written by and published by . This book was released on 1902 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis United Nations Water Conference by : Asit K. Biswas
Download or read book United Nations Water Conference written by Asit K. Biswas and published by Pergamon. This book was released on 1978 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
