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 416 for “"trout"”.
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Interactions between Lake Trout and Bull Trout in the Priest Lake system, Idaho
… directional movements, and distributions of Bull Trout and Lake Trout between Priest Lake and Upper Priest Lake, Idaho, were studied from May 2015 to April 2017. Lake Trout (n=220) and Bull Trout (n=40) movements were monitored using Lotek JSATS transmitters and hydrophones both passively, using …
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Ecology of Lake Ontario Brown Trout
… behavior, and habitat preferences of brown trout (Salmo trutta) in Lake Ontario. During fall 1980 and spring and fall 1981, the activities of 36 radiotagged brown trout were monitored near the southern shore of Lake Ontario between Port Bay and Point Breeze (Fig. 1). Underwater radio …
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Environmental factors related to the abundance and distribution of brook trout (Salvelinus fontinalis) and brown trout (Salmo trutta) and seasonal movements of brown trout in selected Virginia streams
The relationships between brook trout (Salvelinus fontinalis), brown trout (Salmo trutta), non-game fish populations and selected physical and chemical parameters were investigated in four streams draining the Blue Ridge Mountains in north-central Virginia during low flow conditions in August, 1981 …
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Cormorants and the Loch Leven trout fishery
… conservation and a famous commercial brown trout Salmo trutta fishery, where Great Cormorants Phalacrocorax carbo have been shot in large numbers. This thesis describes the foraging behaviour of cormorants wintering on Loch Leven. It summarises changes in wintering numbers over a 32 year …
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Benthic Macroinvertebrate Susceptibility to Trout Farm Effluents
The direct effects of a Virginia trout farm on benthic macroinvertebrates were examined using multiple approaches. Static laboratory tests with the amphipod, Hyallela azteca, were conducted with exposures to water taken from a spring, effluent above a sedimentation basin, and effluent below a …
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MANAGEMENT AND LIFE HISTORY CONSEQUENCES OF HYBRIDIZATION BETWEEN WESTSLOPE CUTTHROAT TROUT (ONCORHYNCHUS CLARKII LEWISI) AND RAINBOW TROUT (ONCORHYNCHUS MYKISS)
… fishes cannot be overstated. Westslope cutthroat trout (<italic>Oncorhynchus clarkii lewisi</italic>, WCT) are a salmonid native to the northern Rocky Mountains. These trout hybridize with rainbow trout (<italic>O. mykiss, RBT</italic>) where they are sympatric; however, in portions of the WCT …
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MANAGEMENT AND LIFE HISTORY CONSEQUENCES OF HYBRIDIZATION BETWEEN WESTSLOPE CUTTHROAT TROUT (ONCORHYNCHUS CLARKII LEWISI) AND RAINBOW TROUT (ONCORHYNCHUS MYKISS)
… fishes cannot be overstated. Westslope cutthroat trout (<italic>Oncorhynchus clarkii lewisi</italic>, WCT) are a salmonid native to the northern Rocky Mountains. These trout hybridize with rainbow trout (<italic>O. mykiss, RBT</italic>) where they are sympatric; however, in portions of the WCT …
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Factors Influencing the Distribution of Bull Trout and Westslope Cutthroat Trout West of the Continental Divide in Glacier National Park
The reported decline of native bull trout Salvelinus confluentus and westslope cutthroat trout Oncorhynchus clarkii lewisi populations west of the Continental Divide in Glacier National Park (GNP) prompted research to identify critical habitats and investigate factors influencing their distribution …
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Factors Influencing the Distribution of Bull Trout and Westslope Cutthroat Trout West of the Continental Divide in Glacier National Park
The reported decline of native bull trout Salvelinus confluentus and westslope cutthroat trout Oncorhynchus clarkii lewisi populations west of the Continental Divide in Glacier National Park (GNP) prompted research to identify critical habitats and investigate factors influencing their distribution …
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Effects of Culverts on Brook Trout Genetic Diversity
Brook trout (Salvelinus fontinalis) are a species of concern within their native range due to a historical loss of habitat, overfishing, and stocking of non-native salmonids. Road culverts have been recognized as an additional impediment to population persistence as movement between diverse habitat …
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The fluvial biology of Lake Taupo rainbow trout
… riverine biology of adfluvial-lacustrine rainbow trout (Oncorhynchus mykiss, previously Salmo gairdneri) from the Waimarino, Tokaanu, and Hinemaiaia Rivers was investigated. These three streams are important spawning and rearing habitats for rainbow trout recruiting to an economically important …
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New product development in the UK trout industry
The collaborators, a trout farming and processing company, experienced poor utilisation of non-retail grades of rainbow trout. New products were required to utilise this resource and realise the growth opportunities in the multiple retail market. Factors influencing the subsequent developments …
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Periphyton production in an Appalachian mountain trout stream
… was measured in a second order, western Virginia trout stream and two of its tributaries. Measurements were taken about three times monthly from April 1977 through April 1978 excluding 74 days of inaccessibility due to snow. Primary production rates were estimated in situ using ¹⁴C assimilation in …
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Bull trout (Salvelinus confluentus) population structure and extent of hybridization with brook trout (S. fontinalis) across Alberta's Eastern Slopes
… our understanding of species conservation. Bull trout (Salvelinus confluentus), a charr native to northwestern North America, face population declines and require protection to ensure their persistence and survival. In my thesis, I used genetic loci known as Single Nucleotide Polymorphisms (SNPs) …
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Bioenergetics of Rainbow Trout in Lake Oahe, South Dakota
Rainbow trout Oncorhynchus mykiss have been stocked in Lake Oahe, South Dakota for the past 25 years. In recent years spawning runs of rainbow trout have increased, providing South Dakota Department of Game, Fish and Parks biologist the opportunity to substantially increase stocking rates. Concern …
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RELATING METABOLIC PHENOTYPES TO MOVEMENT BEHAVIOR IN BROOK TROUT
<p>Brook trout movement-related life history strategies vary considerably and range from individuals that stay within the same 100 meters their entire life to individuals that are potamodromous or anadromous. Potential drivers of movement life histories have been the subject of much research in …
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