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Showing 1 to 20 of 28 for “"northern pike"”.
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Biotic Integrity and Northern Pike Ecology in Eastern South Dakota
… Documenting stream health is important in the Northern Glaciated Plains (NGP) Ecoregion, which is undergoing rapid landscape alterations because of increased agricultural production. Understanding sport fish ecology in prairie streams, garners important public support for protecting stream …
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An Assessment of Northern Pike Populations in Small South Dakota Impoundments
Populations of northern pike Esox lucius and largemouth bass MIcropterus salmoides in combination with yellow perch Perca flavescens and/or bluegill Lepomis machrochirus were studied in three small South Dakota impoundments to determine predator-prey relationships. Densities (number of fish ≥ stock …
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Evaluating Alberta’s Fall Index Netting Protocol for Assessing Northern Pike (Esox lucius) Populations
… of Fall Index Netting (FIN) for monitoring Northern Pike (Esox lucius) populations, we tested five hypotheses relating FIN catches to independently measured abundance and sizes of Northern Pike, including testing the economic effectiveness of FIN monitoring. These tests used fisheries survey …
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Annual Food Habits of Northern Pike in an Eastern South Dakota Natural Lake
Food habits of northern pike Esox lucius were documented in Lake Thompson, a shallow, windswept, eutrophic lake in eastern South Dakota. The main food items, assessed with the Relative Importance Index, eaten by northern pike in Lake Thompson were common carp Cyprinus carpio, black crappies …
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Growth, Distribution, and Movement of Northern Pike in a South Dakota Natural Lake, With Sampling Considerations
A total of 702 northern pike Esox lucius was collected monthly on 17 occasions from July 1991 to June 1993 from Lake Thompson, South Dakota to assess seasonal variations in growth and sampling data. Mean length of male northern pike from the 1990 year class increased during the spring and autumn of …
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Trophic Ecology of Largemouth Bass and Northern Pike in Allopatric and Sympatric Assemblages of Voyageurs National Park, Minnesota
… of largemouth bass Micropten1s salmoides and northern pike Esox lucius from allopatric and sympatric assemblages in Voyageurs National Park (VNP), Minnesota. The study lakes were characterized as long and narrow with few coves or bays present. Littoral areas were limited in the study lakes, …
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Diet, growth and bioenergetics of Northern Pike (Esox lucius Linnaeus, 1758) in Box Canyon Reservoir, Pend Oreille River, Washington
… of this study were to describe the growth of northern pike, describe the food habits of northern pike and using bioenergetics modeling assess the mass and total numbers of each species of forage fish the northern pike population consumed in Box Canyon Reservoir,Pend Orielle River, Washington. …
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Predator-prey Interactions of Fishes in Two Nebraska Sandhill Lakes
… largemouth bass Micropterus salmoides and northern pike Esox Lucius food habit studies have been undertaken extensively throughout the United States and Europe, none have been completed for fish communities in the Nebraska Sandhill lakes. Additionally, little information exists on the …
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Movement and Distribution of Esocids and Forage Fishes In A Power Plant Cooling Reservoir
One Muskellunge (Esox masquinongy) and 2 northern pike (E. Lucius) were surgically implanted with untrasonic transmitters and tracked in a South Dakota cooling reservoir from June 1979 to June 1980. The fishes inhabited the intake area of the reservoir during the summer (temperature range, 27.5 – …
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Assessing the Sustainability of Fish Communities in Glacial Lakes: Habitat Inventories and Relationships Between Lake Attributes and Fish Communities
… perch proportional stock density (PSD), and northern pike Esox lucius PSD. Lake basin ruggedness was negatively correlated with black crappie Pomoxis nigromaculatus PSD, northern pike Wr, and walleye Stizostedion vitreum Wr. Lake surface area was positively correlated with walleye Wr, walleye …
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Growth, survival, and vulnerability to predation of stocked walleye (Stizostedion vitreum) fingerlings
… largemouth bass (Micropterus salmoides) and northern pike (Esox Lucius consumed fathead minnows (Pimephales promelas) 2.6 times more frequently than walleye (Stizostedion vitreum) and 5.7 times more than lepomids. Prey were more vulnerable in circular than rectangular tanks. In field studies, …
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Mercury concentration and aquatic food web alterations associated with zebra mussel invasion in Minnesota lakes
… safe threshold for safe eating of average 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% …
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The Consequences of Non-Native Species Invasions on the Contemporary and Historic Trophic Ecology of Native Sport Fish in a Lake Michigan Embayment
… High degrees of niche overlap between walleye, northern pike (<em>Esox lucius</em>), smallmouth bass (<em>Micropterus dolomieu</em>) and yellow perch (<em>Perca flavescens</em>) indicating shared use of common prey items including round goby (<em>Neogobius melanostomus</em>)]. As length …
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Space Use by Piscivorous Birds, Fish, and Humans on a Multi-Use Lake in Southern Saskatchewan
… 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 by the limited …
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Indexing Walleye Recruitment in Eastern South Dakota Natural Lakes
… model selection results supported adult Northern Pike Esox lucius relative abundance and reduced models that included winter severity. Although relationships were weak, lower Walleye recruitment was generally associated with higher Northern Pike relative abundance and increased winter …
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Ecology of Fish Communities in Nebraska Sandhill Lakes
… were typically high among all lakes. However, northern pike Esox Lucius exhibited relatively low condition when compared to other fish species. Quality bluegill and yellow perch populations were influenced by their environment; however, predation by largemouth bass Micropterus salmoides and …
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The Effect of Grass Carp Introduction on Aquatic Vegetation and Existing Fish Populations in Two Small Prairie Lakes
… macrochirus), respectively. The biomass of northern pike (Esox lucius) was also high at 13.8 kg/hectare. A Proportional Stock Density (PSD) of 11 and Relative Weight (WK) of 117 indicated a relatively healthy bluegill population in East Lake Eureka. However, the PSD value for black bullheads …
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A Comparison of Adult and Sub-Adult Walleye Movements and Distribution in Lakes Having Simple and Complex Morphometry
… examined at Lake Kampeska and from walleyes and northern pike Esox lucius at Lake Enemy Swim. At Lake Kampeska, 126 walleyes and 85 white bass stomachs contained food. Walleyes consumed fishes dunng all seasons: generally invertebrates were consumed only in the spring. Zooplankton, fishes, and …
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Emulating the fast-start swimming performance of the chain pickerel (Esox niger) using a mechanical fish design
… achieved by the fast-start specialist, northern pike, are reported at 120 ms-2 and 4 ms-1, respectively (Harper and Blake, 1990). In this thesis, a simple mechanical system was created to closely mimic the startle response that produces these extreme acceleration events. The system …
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