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Showing 1 to 20 of 30 for “"walleye (Sander vitreus)"”.
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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 …
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Mimicking Nature: How water level management on a large reservoir affects walleye (Sander vitreus) spawning habitat
… To compare the effects of the rule curves on walleye spawning, I modeled wave energy, ice scour, and habitat availability at 44 spawning locations. Wave energy increased (18% for observed water levels, 6% for modeled water levels) and ice scour decreased 11% (both P < 0.01) over spawning …
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Quantification of Variability, Abundance, and Mortality of Maumee River Larval Walleye (Sander vitreus) Using Bayesian Hierarchical Models
… abundance estimation methods. Larval walleye in the Maumee River are extremely variable; however estimates of abundance and mortality are important in understanding anthropogenic impacts on this spawning group and their role in Lake Erie walleye recruitment. Bayesian hierarchical …
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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 …
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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
… density. 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 …
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A genetics-based approach for the determination of Phalacrocorax auritus diet on Lake Nipissing
The decline in Sander vitreus population on Lake Nipissing (LN) has become an increasing cause for concern for the city of North Bay and the surrounding communities. Double-crested cormorants (Phalacrocorax auritus) have been suggested as a possible cause for the decline of these fish stocks. Using …
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Evaluating the effects of rainbow smelt on native piscivores in freshwater systems with a special focus on walleye recruitment and larval bioenergetics
… salar), 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 …
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Estimating Trophic Position of Lake Oahe Walleye Using Stable Isotope Analysis
… recruitment 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 …
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Characterizing a Hidden Fishery: Setline Fishing in the New River, Virginia
… method 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 …
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Investigating ecosystem-level effects of gillnet bycatch in Lake Erie: implications for commercial fisheries management
… two major 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 …
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Genetic Marker-Assisted Management of Virginia Sport Fishes
… a system. 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 …
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Predation, turbidity, and other factors influencing juvenile Salmonid survival in the lower Snake River
… species, 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 …
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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, …
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Benthic invertebrate management in plastic-lined fish culture ponds
… Moravia, 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 …
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Mercury concentration and aquatic food web alterations associated with zebra mussel invasion in Minnesota lakes
… lakes, with 231 of those lakes managed as walleye fisheries. Many ecological changes are associated with zebra mussel invasion, including increased water clarity, depleted pelagic energy resources, expanded littoral zones, deposition of benthic organic matter causing anoxic sediments, and …
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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 …
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Understanding links between flow regime and fish populations in the Saskatchewan River Delta
… two species 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, …
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Combined effects of maternal traits and spring warming patterns on spawning success of walleye
… variability in many fishes. Previous research on walleye (Sander vitreus) has suggested that early life survival and subsequent year-class strength may be related to the age composition of spawners through maternal influences on egg quality, as well as environmental conditions during spawning and …
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Influence of Gizzard Shad on Fish Community Ecology in Northeastern South Dakota Glacial Lakes
<p>Walleye Sander vitreus are the most popular sport fish in South Dakota, while yellow perch Perca flavescens are important both ecologically as prey for walleye and economically as an important sport fish themselves. Gizzard shad Dorosoma cepedianum are also an ecologically important species in …
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The Contribution of Missouri River Reservoir Side-Channel and Floodplain Habitats to Mainstem Fish Populations: The Effects of Losing Connectivity Between Hipple Lake and Lake Sharpe
… Framboise, was important for White Bass, Sauger (Sander canadensis), and Walleye (Sander vitreus) natal recruitment and adult use, as well as adult use for Bluegill, Yellow Perch (Perca flavescens), and Largemouth Bass. A stilling basin was important for Yellow Perch and Gizzard Shad. The main …
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