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 20 of 24 for “"Fish Health"”.
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Bioelectrical impedance analysis as a predictor of fish health and energy content in juvenile rainbow trout (Oncorhynchus mykiss)
Assessing the health of a fish is an essential part to aquaculture and fish research. This is traditionally done by measuring body content using bomb calorimetry or proximate composition analysis; however, both of these methods necessitate sacrificing the fish in order to obtain accurate data. This …
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Assessment of the Efficacy of a Constructed Wetland to Reduce or Remove Wastewater Effluent Estrogenicity and Toxicity Using Biomarkers in Male Fathead Minnows (Pimephales Promelas Rafinesque, 1820)
… Biological indicators used to assess general fish health included hematocrit and condition factors. The estrogenic nature of the effluent was screened, concurrent with fish exposure, with GC/MS analysis for target estrogenic compounds including: 17-b estradiol, estrone, ethynylestradiol, …
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Establishment and Utilization of Tools for Enhancing Foodfish Health
… assist the human demands for seafood so that foodfish supplies can remain sustainable and consistent. Although the fish-farming industry has seen dramatic growth and intensification in recent years, the latter has led to an increase in bacterial diseases and fish health management problems, …
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Vitellogenin induction in male Japanese medaka exposed to the chemotherapeutics: oxytetracycline, Romet-30, and copper sulfate
… through aquaria water in a third experiment. All fish were exposed to solvent controls (50/50 PBS/ethanol, or 59/41 PBS/ ethanol) proportional to the volume of estradiol solvent used. Experiment 1 was terminated due to a decrease in fish health and unexpected mortalities. Experiment 2 was …
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Effects And Interactions Of Antibiotic, Butyrate, And Temperature On Sailfin Molly (Poecilia Latipinna) Metabolism And Gut Microbiota
… microbiome dynamics is crucial for optimizing fish health and growth, particularly in aquaculture settings. This study examines the effects of antibiotic, butyrate, and temperature treatments on the metabolism and gut microbiota of sailfin molly (Poecilia latipinna) alone and in combination. …
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Novel Aquafeed Towards A Sustainable Aquaculture
With World Health Organization estimation of population increase to over 9 billion by 2050, malnutrition and food insecurity are predicated to be two of the main challenges facing the world in the future. Fish is a source of protein that can have a significant contribution for solving the global …
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Molecular assessment of parasite infection within socioeconomically important UK salmonid populations
… to the United Kingdom. The economy generated via fish farming and eco-tourism has aided isolated communities in job creation and tourism income. It is particular true in highland communities in Scotland, where parasite infection has threatened the health of Scottish salmonids. The work presented …
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Potential influences of climate change and tournament angling on lake ecosystems with a focus on largemouth bass
… negatively influence populations of popular sportfish, as fish are often removed from nesting grounds during the spawning season. While angled individuals often have limited reproductive success, the impact that these tournaments have on population-level recruitment and juvenile size structure is …
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The Gut Microbiome and its Relationship to Migratory Behaviour and Fate in Wild Fishes
… physiological processes that contribute to host health and fitness. Wild, migratory species offer a unique opportunity to examine the gut microbiome under an additional layer of complexity. Changing external environments, compounded by migration-associated physiological changes in the host, may …
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The effects of natural and anthropogenic stressors on the stress response and tissue-level response in teleost fish
… that exogenous stressors may have on organismal health. Laboratory studies are useful in studying the effects of a single or multiple stressor interactions in a controlled environment, although field-based studies allow for the understanding of how fish are affected in situ, where multiple …
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Evaluating the efficacy of brewers’ yeast-derived functional feed additives in mitigating soybean meal-induced enteritis in Atlantic salmon
… new challenges including the need to replace fishmeal with plant-based ingredients without compromising intestinal health. In Atlantic salmon aquaculture, one of the main constraints to plant protein inclusion is soybean meal-induced enteritis (SBMIE), a diet-related inflammatory condition …
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Impact of dietary functional yeast additives on growth performance and health of selected key aquaculture species
… challenges, including the need to meet growing fish demand while minimising environmental impacts and managing disease prevalence. Functional feed additives (FFAs) have emerged as sustainable solutions to enhance fish health and performance. Among these, yeast-derived additives have garnered …
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Biosecurity in the Recirculation Sector of Finfish Aquaculture in the United States and Canada
… used to prevent or control the spread of fish disease. The focus of this research was the practice of biosecurity in the recirculation sector of finfish aquaculture in the United States and Canada. Specifically, this research: 1) identified and characterized finfish recirculation …
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Enabling the Development of Sustainable Aquaculture in Qatar
… well-preserved histoarchitecture consistent with healthy teleost anatomy, with some tissue-specific characteristics likely reflecting adaptation to the high-salinity environment. The safi gills showed epithelial lifting, while the hamour kidney exhibited multi-glomerular arrangements. Pathogen …
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Dietary Selenium in Cultured Hybrid Striped Bass
… proportion of the worlds growing population, fish producers have been pressured to increase overall production. However, associated with elevated production is greater stress due to crowding, reduced water quality, and other factors. These stressors impact the health and welfare of the farmed …
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ALTERNATIVE LIPIDS IN NUTRITION OF MARINE FINFISH
Fish oil sparing and replacement is a major focus in the fields of aquaculture and aquaculture nutrition. Most of the commercial fish oil production is consumed by the aquafeed industry due to its highly digestible energy and elevated content of long-chain polyunsaturated fatty acids (LC-PUFAs; ARA …
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Inclusion of lupin meal and effect of a commercial feed supplement (Synergen™) in diets for carp, Cyprinus carpio
… the use of plant protein concentrates in fish feeds. To address this limitation, one option is to use an exogenous (mixed- enzyme containing, solid state fermentation, SSF) dietary supplement. Two nutritional trials were conducted in order to assess the incorporation of extruded white …
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Enabling the Development of Sustainable Aquaculture in Qatar
… well-preserved histoarchitecture consistent with healthy teleost anatomy, with</p><p dir="ltr">some tissue-specific characteristics likely reflecting adaptation to the high-salinity</p><p dir="ltr">environment. The safi gills showed epithelial lifting, while the hamour kidney exhibited</p><p …
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Advanced Largemouth Bass Production and Stock Contribution to Small South Dakota Impoundment Fisheries
… valued as a top predator to maintain quality panfish fisheries. Managers use largemouth bass to manipulate the size structure and growth rates of panfish in small impoundments by reducing the number of small individuals through predation. Largemouth bass are also a highly sought‐after sport fish …
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