Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"fish diets"”.
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Trophic Interactions And The Efficacy Of Milfoil Weevils For Biocontrol Of Eurasian Watermilfoil In Wisconsin Lakes
… communities, serves as poor-quality habitat for fish and macroinvertebrates, impacts recreation, and can clog water supply infrastructure. The milfoil weevil (Euhrychiopsis lecontei Dietz) has been associated with EWM declines in several states, though natural weevil densities are generally too …
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TROPHIC DYNAMICS OF THE LAKE SUPERIOR FISH COMMUNITY
… and ecological requirements of the entire fish community, including predators and prey fishes, has not been assessed on a whole-lake scale in over a decade. Here, I investigated the trophic dynamics across multiple regions of the lake, and estimated the consumptive effect of lean lake charr …
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AMPHIPODS ARE STRONG INTERACTORS IN THE FOOD WEB OF A BROWN-WATER SALMON RIVER
… salmonids, especially during the summer when fish diets reached a peak of 88.7% (SE=6.0%) amphipods in 2005, and 68% (SE=18%) amphipods in 2006. The condition factor of salmonid juveniles (K) increased from spring to summer, particularly in juvenile chum, whose spring diet was 76.83% (SE 0.05) …
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AMPHIPODS ARE STRONG INTERACTORS IN THE FOOD WEB OF A BROWN-WATER SALMON RIVER
… salmonids, especially during the summer when fish diets reached a peak of 88.7% (SE=6.0%) amphipods in 2005, and 68% (SE=18%) amphipods in 2006. The condition factor of salmonid juveniles (K) increased from spring to summer, particularly in juvenile chum, whose spring diet was 76.83% (SE 0.05) …
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The development of a modular integrated recirculating aquaculture system using Porphyra (nori) for the bioremediation of marine finfish effluent
<p>It is crucial for the development of the fish aquaculture industry to be managed in a way that provides a reliable, long term source of products without negatively impacting the environment. The simplest form of integrated multi-tropic aquaculture (IMTA) uses a fed component (e.g. finfish) and …
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The relationship between Protein Source and Nitrogen Metabolism in the Trout
… with the use of novel proteins (SCP's) in fish diets are described. In the first series of experiments classical nitrogen balance techniques were used. From these, MFN was found to be 175 mg N/100g diet and EUN 12.37 mg N/100g fish/day. Using this data, true NPU's were determined at various …
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The Effects of a Dietary Bacterial Protein on Mineral Balance in Rainbow Trout (S. gairdneri Rich.)
… protein (I.C.I.'s "Pruteen") was tested in diets for rainbow trout, to investigate the effects of the new feedstuff on the mineral balance of the fish as expressed by the carcass and tissue mineral levels. Supplements of the major and trace elements were added to trout diets in various …
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Influence of riparian forest and agricultural land use on community structure and ecosystem function in headwater streams
… greater abundances of macroinvertebrates and fish in streams with low forest buffer, assemblages were dominated by pollution tolerant taxa. In contrast, streams with high percent forest buffer and low watershed agriculture had the best biotic integrity. Greater proportions of piscivores in …
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Field and laboratory studies suggest that recruitment of the invasive common carp is controlled by native fish in Stable Lakes of the Upper Mississippi Basin.
… an ecological disturbance that alters the fish community. It has been hypothesized that recruitment of carp is limited by native predatory fish and that carp are only able to recruit in habitats where these native species have been excluded due to winter hypoxia. We tested this hypothesis …
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Bioenergetics and Life History of Rainbow Smelt in Lake Oahe, South Dakota
… species as well as a reduction in the number of fish species in the river (Duffy 1988). Little work has been conducted studying the trophic status of Lake Oahe since its impoundment twenty-five years ago. The effect of reservoir aging on the growth and population dynamics of fish species and …
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The Effect of Walnuts Compared to Fatty Fish on Plasma and Erythrocyte Fatty Acid Composition, Lymphocyte Subsets and Inflammatory Mediators
… was to compare the effects of walnuts vs. fatty fish on circulating inflammatory markers, on lymphocyte subsets, on plasma concentrations of eicosanoids precursor polyunsaturated fatty acid and on erythrocyte membrane fatty acid composition. Under controlled metabolic feeding conditions and …
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Comparison of polychlorinated biphenyl profiles in rat, fish and human tissues; the effects of consuming Great Lakes fish
… the consumption of contaminated Great Lakes fish. Fish from Lake Superior (LS), Lake Michigan (LM), and Lake Huron (LH) were examined for either total PCB or specific congener concentrations. Total PCBs were highest in carp, lake trout and siscowet lake trout compared to walleye, whitefish, …
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An Ecological Approach to Feed Management in Fish Rearing Ponds
Channel catfish (Ictalurus punctatus) has been the most important cultured fish in the United States by yield and commercial value for the past 60 years, and at least 31 states stock this species into lakes and reservoirs as a sportfish. Catfish culturists have historically used a “black box” …
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DEVELOPMENT OF A NEXT-GENERATION IN VITRO PLATFORM FOR IN-DEPTH EVALUATION OF ALTERNATIVE SUSTAINABLE FISH FEED FORMULATIONS
Intensive farming of commonly consumed fish species has continuously increased to meet the growing global demand and to relieve marine fish stock that has reached its production plateau . However, many fish intended for human consumption are carnivorous species and therefore fed using fishmeal and …