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Reasons For Overwinter Declines In Age-1+ Brook Trout Populations (Salvelinus Fontinalis) In Appalachian Headwater Streams, Jeremy J. Webster
Reasons For Overwinter Declines In Age-1+ Brook Trout Populations (Salvelinus Fontinalis) In Appalachian Headwater Streams, Jeremy J. Webster
Graduate Theses, Dissertations, and Problem Reports
Brook trout (Salvelinus fontinalis) in the Appalachian Mountains are an important game species in West Virginia, yet angling mortality on these populations in headwater streams is poorly understood. The objectives of this study were to: (1) examine relative changes in body composition of brook trout as they fluctuate throughout the year, and to identify critical periods of survival to determine if brook trout reach critical levels of resource depletion over winter, and (2) evaluate whether angler harvest affects brook trout populations in spring in headwater streams. Body composition estimates indicated that brook trout are unlikely to reach critical levels of …
Starvation-Induced Alterations In Hepatic Lysine Metabolism In Different Families Of Rainbow Trout (Oncorhynchus Mykiss), Angela Higgins
Starvation-Induced Alterations In Hepatic Lysine Metabolism In Different Families Of Rainbow Trout (Oncorhynchus Mykiss), Angela Higgins
Graduate Theses, Dissertations, and Problem Reports
This study focused on lysine catabolism by the lysine alpha-ketoglutarate reductase (LKR) pathway in rainbow trout (RBT). Selective breeding based on feed efficiency in 2 strains (A and B) of RBT generated 2 families within each strain. Eight fish from each of the four families were randomly allotted to individual tanks. Fish were fed until satiation for 3 wks at which time four fish within each family were randomly selected for 2 wks of starvation. After the 2 wk starvation, all fish were harvested. Hepatic in-vitro LKR activity and lysine oxidation (LOX) were measured as was LKR mRNA abundance. Strain …
Examination Of Experimentally Engineered Larval Fish Habitat In The Marmet Pool, Kanawha River, West Virginia, Jonathan M. Niles
Examination Of Experimentally Engineered Larval Fish Habitat In The Marmet Pool, Kanawha River, West Virginia, Jonathan M. Niles
Graduate Theses, Dissertations, and Problem Reports
In rivers, velocity shelters are thought to serve as limiting factors in the retention and recruitment of young fish. Such shelters are formed in backwaters and tributaries, however these areas are limited in the Marmet Pool of the Kanawha River, West Virginia. In response to this concern, several structures that are thought to serve as low velocity zones were placed within the Marmet Pool. This study was conducted to evaluate the experimental rock structures (Finger and Zipper Dikes) as potential mitigation for navigational impact and to determine which sampling gears are best to sample these shallow, structurally diverse areas. The …
Stream Ecosystem Response To Mitigative Limestone Treatment In Acid-Impaired, Central Appalachian Streams, Sarah Elizabeth Mcclurg
Stream Ecosystem Response To Mitigative Limestone Treatment In Acid-Impaired, Central Appalachian Streams, Sarah Elizabeth Mcclurg
Graduate Theses, Dissertations, and Problem Reports
We quantified water chemistry, primary production, and benthic macroinvertebrate and fish community structure in 20 Central Appalachian streams: 4 acidic streams, 8 naturally circumneutral streams, and 8 historically acidic streams treated annually with limestone sand over varying lengths of time. The objective was to determine the extent of chemical and biological recovery and temporal trends in the recovery process of limestone treated streams compared to circumneutral reference conditions in Central Appalachia. Results indicate that the application of limestone sand to acidic streams is effective in fully and immediately recovering some of the chemical and biological characteristics of naturally functioning stream …
Spatial And Seasonal Variation In Brook Trout Diet, Growth, And Consumption In A Complex Appalachian Watershed, David W. Thorne
Spatial And Seasonal Variation In Brook Trout Diet, Growth, And Consumption In A Complex Appalachian Watershed, David W. Thorne
Graduate Theses, Dissertations, and Problem Reports
I quantified brook trout diet, growth, and consumption in the upper Shavers Fork watershed from May 2002--October 2003. Seven study sites were selected to represent small tributary, large tributary, and mainstem habitats within the watershed. The objectives of the study were to determine if diet, growth, and consumption in brook trout were dependent on fish size, season, and location within the watershed. Fish diets were sampled and categorized into six prey type groups to determine variability in prey composition and diet mass. Mark-recapture was used to measure growth in individual fish between sampling seasons and the growth information was then …
Sources And Ecological Consequences Of Deposited And Suspended Sediments In Small Tributaries Of The Upper Elk River Watershed, West Virginia, Cynthia Louise Sanders
Sources And Ecological Consequences Of Deposited And Suspended Sediments In Small Tributaries Of The Upper Elk River Watershed, West Virginia, Cynthia Louise Sanders
Graduate Theses, Dissertations, and Problem Reports
Deposited and suspended sediments were sampled in small tributaries of the upper Elk River watershed to determine if differences exist in sediment transport and deposition based on land management activities of low disturbance, development, or timber harvesting. Brook trout (Salvelinus fontinalis ) were sampled to determine if a negative relationship existed between populations and deposited or suspended sediments. There were no significant relationships in deposited sediments among land use yet timber harvest and developed lands had significantly higher transported sediments than low disturbance lands. There were no significant relationships between brook trout populations and deposited sediments. However, a slight negative …
Honeycomb Fiber-Reinforced Polymer Sandwich Composites For Development Of Aquaculture Raceway Systems, Avinash Vantaram
Honeycomb Fiber-Reinforced Polymer Sandwich Composites For Development Of Aquaculture Raceway Systems, Avinash Vantaram
Graduate Theses, Dissertations, and Problem Reports
It is argued that the utilization of impaired mine waters abundant in WV and other mid-Appalachian states for fish culture can substantially increase aquaculture economic development. The primary limitation to the effective utilization of discharged waters is the lack of suitable fish culture tanks that can be easily installed in rugged terrains surrounding mine water treatment plants, where cast-in-place concrete tanks cannot be constructed. Therefore, Fiber-Reinforced Polymer (FRP) sandwich materials offer an economical option for production of light, transportable and durable fish culture raceway systems. This study is concerned with the development and evaluation of prototype fish culture tanks using …
Local And Regional Impairment Of Fish Assemblages In A Mined Appalachian Watershed, Jason Gregory Freund
Local And Regional Impairment Of Fish Assemblages In A Mined Appalachian Watershed, Jason Gregory Freund
Graduate Theses, Dissertations, and Problem Reports
I used the Cheat River watershed, West Virginia, as a model system to examine the regional impacts of extensive localized stream impairment. Acid mine drainage (AMD) in the Cheat River watershed provided a unique opportunity to test the hypothesis that regional biological condition can be impacted through multiple local sources of degradation. Acid mine drainage is the result of the interaction among pyrite-rich coal, oxygen, and water. This interaction produces a solution that is generally low in pH and buffering capacity and high in heavy metals and sulfate and is toxic to aquatic life. Acid mine drainage also has the …
Fish Use Of Artificial Dyke Structures In The Kanawha River, West Virginia, Jennifer L. Titus
Fish Use Of Artificial Dyke Structures In The Kanawha River, West Virginia, Jennifer L. Titus
Graduate Theses, Dissertations, and Problem Reports
Artificial structures have been used in the past to potentially increase fish production by providing cover, feeding grounds and spawning areas. In some areas the US Army Corp of Engineers has constructed dykes to provide additional habitat for river fishes and to mitigate against navigable related impacts. This study is designed to test whether such structures really function as viable habitats as evidenced by increased abundances relative to natural reference areas lacking structures. Five sets of structures in the Kanawha River, West Virginia were sampled via boat electrofishing using point-abundance sampling twice monthly from June through October 2002 and 2003. …
Brook Trout Bioenergetics And The Use Of Bioelectrical Impedance Analysis For Proximate Composition, Marlin Keith Cox Ii
Brook Trout Bioenergetics And The Use Of Bioelectrical Impedance Analysis For Proximate Composition, Marlin Keith Cox Ii
Graduate Theses, Dissertations, and Problem Reports
Three aspects of a bioenergetics model were examined for brook trout (Salvelinus fontinalis) in the laboratory: (1) refinement of the metabolism parameter estimations, (2) calculation of activity rates and (3) subsequent validation of the brook trout model. An integral part of bioenergetics modeling is the initial inputs of predator and prey energy density from body composition estimations. We present bioelectrical impedance analysis (BIA) as a means of rapidly estimating body composition in fish and then adjusted variables that may affect these predictions. We also used this tool and applied it to a compensatory growth study. Brook trout (Salvelinus fontinalis) were …
Post-Flood Recovery And Distributions Of Fishes In The New River Gorge National River, West Virginia, David I. Wellman Jr.
Post-Flood Recovery And Distributions Of Fishes In The New River Gorge National River, West Virginia, David I. Wellman Jr.
Graduate Theses, Dissertations, and Problem Reports
The following thesis contains three chapters. The first chapter introduces and reviews literature on disturbances in streams (e.g. flood and drought), recovery of impacted lotic systems, introduced species and New River fish distributions. Chapter 2 provides a synthesis of native and nonnative fish distribution data of the New River Gorge National River (NRGNR). Sixty-two species were documented within or near the NRGNR. Thirty-one (50%) are considered nonnative. The third chapter consists of a study that estimated seasonal abundances of native and nonnative fishes in small tributaries of NRGNR during a 20 month time period following July 2001 floods, and examined …