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.
Results
Showing 1 to 20 of 32 for “"Sander vitreus"”.
-
Interactions between Walleye Sander vitreus and Smallmouth Bass Micropterus dolomieu in Missouri River reservoirs
Walleye Sander vitreus is a popular sportfish economically beneficial to the fisheries they inhabit but have experienced recent declines throughout their range. As a result, supplemental stocking is common. Smallmouth Bass Micropterus dolomieu have been introduced to many waterbodies outside of its …
-
Mimicking Nature: How water level management on a large reservoir affects walleye (Sander vitreus) spawning habitat
The Namakan Reservoir, located on the Minnesota-Ontario border, has been successively managed under two water-level management policies (‘rule curves’) in recent decades. To compare the effects of the rule curves on walleye spawning, I modeled wave energy, ice scour, and habitat availability at 44 …
-
Quantification of Variability, Abundance, and Mortality of Maumee River Larval Walleye (Sander vitreus) Using Bayesian Hierarchical Models
The estimation of abundance is complicated by factors contributing to spatial and temporal variability. Many organisms are highly variable across both of these scales, thereby violating assumptions of conventional abundance estimation methods. Larval walleye in the Maumee River are extremely …
-
Assessment of the Effects of Habitat, Harvest and Community Interactions on the Abundance of Walleye Sander Vitreus in Inland Lakes Throughout Ontario
Walleye (Sander vitreus) is an important species to the recreational fishery throughout Ontario. Fish community interactions between walleye and other species are rarely considered when establishing management targets which may lead to the creation of conflicting management objectives. Other …
-
Walleye (Sander vitreus) do not exhibit an aggregative predatory response to larval White Sturgeon (Acipenser transmontanus) in the Upper Columbia River in Lake Roosevelt, Washington
… This project aimed to determine whether Walleye (Sander vitreus) exhibit an aggregative predation response to larval White Sturgeon (Acipenser transmontanus) drifts in the Lake Roosevelt system which is a reservoir of the Columbia River in Washington State. Populations of sturgeon are threatened …
-
Evaluating the effects of rainbow smelt on native piscivores in freshwater systems with a special focus on walleye recruitment and larval bioenergetics
… lake trout (salvelinus namaycush) and walleye (Sander vitreus). Differences in larval rearing strategies were indentified as the most important factor in determining the nature of effects of rainbow smelt.In particular, larval walleye experience high levels of mortality after rainbow smelt …
-
Estimating Trophic Position of Lake Oahe Walleye Using Stable Isotope Analysis
… has important implications for walleye Sander vitreus growth and condition in Lake Oahe, South Dakota. In recent years, the rainbow smelt population has decreased appreciably in Lake Oahe. This decline, combined with strong (successive) year classes of walleye, has resulted in reduced …
-
EVALUATING EMBRYO SURVIVAL OF SURROGATE FISH SPECIES USING MULTIPLE INCUBATORS: CONTINUING EFFORTS TOWARDS REINTRODUCING ARCTIC GRAYLING (THYMALLUS ARCTICUS) INTO LOWER MICHIGAN STREAMS
… <em>Salvelinus fontinalis</em>, and Walleye <em>Sander vitreus</em> (as Arctic Grayling surrogates) between RSI and FBI in stream and hatchery environments. In addition, I assessed how abiotic and biotic factors influenced survival for rainbow trout within FBIs among three natural streams. …
-
The Consequences of Non-Native Species Invasions on the Contemporary and Historic Trophic Ecology of Native Sport Fish in a Lake Michigan Embayment
… fish community and historic walleye (<em>Sander vitreus</em>) population of Lake Michigan’s Little Bay de Noc. We found species-specific differences in the δ<sup>15</sup>N and δ<sup>13</sup>C values for 14 fish species. High degrees of niche overlap between walleye, northern pike (<em>Esox …
-
Characterizing a Hidden Fishery: Setline Fishing in the New River, Virginia
… for catching catfish but caught few walleye Sander vitreus, smallmouth bass Micropterus dolomieu, and muskellunge Esox masquinongy. Estimated by-catch of these species by setline fishers is small compared to catch by hook-and-line anglers, though walleye experienced high setline hooking …
-
Investigating ecosystem-level effects of gillnet bycatch in Lake Erie: implications for commercial fisheries management
… commercial and recreational species, walleye (Sander vitreus) and yellow perch (Perca flavescens); an invasive species, white perch (Morone americana); and an endangered species, lake sturgeon (Acipenser fulvescens). The analyses were based on two datasets, the Partnership Index Fishing Survey …
-
Genetic Marker-Assisted Management of Virginia Sport Fishes
… Striped Bass Morone saxatilis, and Walleye Sander vitreus, are widely sought gamefishes in the Commonwealth of Virginia. Striped Bass along the Atlantic Coast and within the Roanoke River drainage exhibit low genetic variation. Screening 12 microsatellite DNA markers across the range to …
-
Predation, turbidity, and other factors influencing juvenile Salmonid survival in the lower Snake River
… smallmouth bass (Micropterus dolomieu), walleye (Sander vitreus) and channel catfish (Ictalurus punctatus). Consumption information is crucial because the construction of the Snake River hydrosystem has created a series of reservoirs, which have altered the river 's flow regimes, riparian …
-
Walleye dermal sarcoma virus Orf C: a potential oncolytic therapy
… of multifocal, cutaneous tumors in walleye fish (Sander vitreus vitreus). These virus-induced tumors spontaneously regress on a seasonal basis. The WDSV genome encodes three accessory proteins (rv-cyclin, Orf B, and Orf C) that are necessary for regulation of virus expression, tumor formation, and …
-
Influence of Food Web Structure and Environmental Conditions on Walleye Stocking Success in Two South Dakota Impoundments
Demand for Walleye Sander vitreus throughout North America has resulted in increased stocking efforts and management of Walleye populations. Despite annual stockings, Walleye abundance in Mina Lake, South Dakota has remained low. Previous research at Mina Lake has shown increased trophic state, …
-
Benthic invertebrate management in plastic-lined fish culture ponds
… Iowa. In both years of the study, walleye (Sander vitreus) were stocked into six 0.04-ha ponds. In 2002, effects of organic fertilization on the benthic community and fish production were determined. It was found that benthic communities were not significantly (P<0.10) affected by the …
-
Mercury concentration and aquatic food web alterations associated with zebra mussel invasion in Minnesota lakes
… sized northern pike (Esox Lucius) and walleye (Sander vitreus) ranged from 60%-70%, with zebra mussel lakes having an increased chance. Specifically, mercury concentrations analyzed using Before-After Control-Impact (BACI) study design increased by 8.2% in northern pike and 15.4% in walleye for …
-
Space Use by Piscivorous Birds, Fish, and Humans on a Multi-Use Lake in Southern Saskatchewan
… how economically important fish species (walleye Sander vitreus; northern pike Esox Lucius; and burbot Lota lota) use lakes and identify key areas for protection and management efforts. Conflicts between humans and fish-eating birds over fisheries resources have also emerged and may be exacerbated …
-
Understanding links between flow regime and fish populations in the Saskatchewan River Delta
… of economic and cultural importance (Walleye Sander vitreus and Lake Sturgeon Acipenser fulvescens) in the Saskatchewan River Delta. To estimate the annual recruitment of Walleye, aging structures were removed from fish sampled from the commercial fishery at Cumberland Lake, Saskatchewan. …
-
Consequences of short-term water temperature variability to fish: Current and future climate change impacts
… growth in physiologically similar walleye (<em>Sander vitreus</em>) but did not induce additional stress responses. Experiments examining early life stages of fathead minnows (<em>Pimephales promelas</em>) revealed that survival and developmental rates were not affected by sub-daily temperature …
Page 1 of 2