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An Interpolation Method For Stream Habitat Assessments With Reference To The Crystal Darter, Kenneth Richard Sheehan
An Interpolation Method For Stream Habitat Assessments With Reference To The Crystal Darter, Kenneth Richard Sheehan
Graduate Theses, Dissertations, and Problem Reports
Crystallaria asprella spp. (Elk River crystal darter) is documented only in Elk River, West Virginia. Little life history detail is known about this lotic, benthic-dependent species. Previous studies have led to a very basic understanding of the use of depth, flow and substrate of the crystal darter (Crystallaria asprella), and less is known about the Elk River crystal darter. Due to substrate-specificity in crystal darters (which reportedly bury in sand), a study concerning benthic stream habitat modeling was undertaken. Substrate and depth modeling using >5% of an area sampled at a resolution of 0.093 m2 square spatial data in a …
The Effect Of A Diet Supplemented With Flaxseed Oil On The Lipid Content And Fatty Acid Profile Of Rainbow Trout (Oncorhynchus Mykiss) Muscle Tissue, Jason P. Nguyen
The Effect Of A Diet Supplemented With Flaxseed Oil On The Lipid Content And Fatty Acid Profile Of Rainbow Trout (Oncorhynchus Mykiss) Muscle Tissue, Jason P. Nguyen
Graduate Theses, Dissertations, and Problem Reports
This experiment examined the effect of nine diets supplemented with varied combinations of flaxseed oil and vitamin E on the total lipid content and fatty acid profile of rainbow trout over four months. Mean values were tested for significant differences between groups using one-way analyses of variance.;The most flaxseed oil supplementation, 23.5%, resulted in the highest concentration of total omega-3 fat in fillets (P<0.05). This was due to the increased (P<0.05) concentration of alpha-linolenic acid (ALA). The 23.5% flaxseed oil trout had the lowest (P<0.05) proportion of saturated fatty acids and the highest amount of total unsaturated fatty acid. Unexpectedly, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) contents significantly decreased as the experiment progressed. No significant differences were seen among total fat contents. The results indicate that feeding a diet supplemented with flaxseed oil and vitamin E produces omega-3 enhanced trout with higher ALA but lower EPA and DHA.
Connecting Wv Fee-Fishing Businesses With The Larger Tourism Market Through The Development Of Tourism Package, Zongxiang Mei
Connecting Wv Fee-Fishing Businesses With The Larger Tourism Market Through The Development Of Tourism Package, Zongxiang Mei
Graduate Theses, Dissertations, and Problem Reports
There is substantial demand for fishing packages in West Virginia. Fee-fishing businesses in West Virginia are often characterized as small businesses, and they could benefit from connecting with larger travel packages that are more likely to attract out-of-state anglers. The objectives are: (1) identify mini-market segments based on fee-fishing experiences; (2) examine how fee-fishing mini-markets can better connect with the larger outdoor recreation markets; and (3) to use this information to identify gaps in recreational offerings and develop tourism packages in a West Virginia test market. Six fee-fishing mini-markets were identified. Regression analysis results indicate that it is possible to …
Spatial Variation In Brook Trout (Salvelinus Fontinalis ) Population Dynamics And Juvenile Recruitment Potential In An Appalachian Watershed, Zachary W. Liller
Spatial Variation In Brook Trout (Salvelinus Fontinalis ) Population Dynamics And Juvenile Recruitment Potential In An Appalachian Watershed, Zachary W. Liller
Graduate Theses, Dissertations, and Problem Reports
I examined the spatial variation in brook trout population dynamics and juvenile recruitment potential in the upper Shavers Fork watershed, West Virginia. The objectives of my research were to (1) identify physico-chemical factors contributing to the spatial variation in the abundance of juvenile brook trout within small basin area stream reaches, (2) quantify patterns of brook trout distribution, movement, and post reproductive demographic parameters across multiple spatial scales, and (3) place the upper Shavers Fork watershed brook trout population along the continuum of watershed-scale metapopulation models. I sampled brook trout population size structure, physical habitat, and water chemistry at the …
Effects Of Environmental Factors On The Paternal Brood Pouch And Sound Production In Two Sympatric Pipefish Species From The Chincoteague Bay, Virginia, Jennifer L. Ripley
Effects Of Environmental Factors On The Paternal Brood Pouch And Sound Production In Two Sympatric Pipefish Species From The Chincoteague Bay, Virginia, Jennifer L. Ripley
Graduate Theses, Dissertations, and Problem Reports
Pipefishes and seahorses of the family Syngnathidae are important inhabitants of diminishing grass beds threatened by excessive nutrient loads, sedimentation, and chemical contaminants. This research examined the influence of these environmental factors on two sympatric pipefishes from the Chincoteague Bay, Virginia. Syngnathids are characterized by a unique mode of reproduction in which the male carries developing embryos in a placenta-like ventral brood pouch until the fry are free-swimming. Interspecific comparisons revealed differences in parental nutrient allocation to embryos. In Syngnathus fuscus, females produce nutritionally poor eggs and males implant developing embryos adjacent to blood vessels. The loose connection between eggs …
Genetic Analysis Of Rainbow Trout (Oncorhynchus Mykiss): Strain Identification Via Microsatellites And Analysis Of Expressed Sequence Tags In Intestine, Liver, Kidney, And Ovary, Amanda B. Stewart
Graduate Theses, Dissertations, and Problem Reports
Implementation of modern fishing techniques and hatchery technologies necessitates use of genetics in management of fishery stocks. Genetic analysis of rainbow trout, Oncorhynchus mykiss, will assist development of superior strains of a valuable aquacultured species. This study was to (1) develop polymorphic microsatellite markers to examine for variation among rainbow trout strains and develop an identification panel of microsatellites to distinguish individual strains, and (2) to identify novel genes and estimate relative gene expression profiles (expressed sequence tags from rainbow trout liver, intestine, kidney, and ovary non-normalized libraries). Thirty-seven microsatellites were identified by screening 576 clones from TAGA and ATG-repeat …
Model And Software Development For Predicting Fish Growth In Trout Raceways, Yin-Han Wang
Model And Software Development For Predicting Fish Growth In Trout Raceways, Yin-Han Wang
Graduate Theses, Dissertations, and Problem Reports
A software program was built using Visual Basic for Applications (VBA) in MicrosoftRTM Excel. The purpose of the software is to allow users to manage their raceways more efficiently by providing a tool to simulate the performance of an existing raceway or to predict the behavior of a raceway under a wide variety of operating scenarios. The program considers the behavior of a system of multiple raceways arranged both in series and parallel configurations, and allows for the addition, removal and combination of different cohorts at different times in different raceways. Input data required include properties of the incoming water …