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Showing 1 to 20 of 36 for “"walleyes"”.
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Production and Flow Cytometric Identification of Triploid Walleyes
… attempt to rear them to the fingerling size. No walleyes survived to a size that would allow blood sampling, therefore no triploid assessment was made. In 1988, six heat-shock treatments and three control treatments were conducted The water temperature of the heat shocks was 29oC or 31 CC, the …
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Food Habits of Walleyes in Lake Oahe, South Dakota
Food habits of young-of-the-year (YOY} walleyes were determined in Okobojo Bay of Lake Oahe, South Dakota, from June through September, 1991. Walleyes initially fed on zooplankton. Copepods, Diaptomus and Cyclops, were initially important for zooplanktivorous walleyes with Diaptomus being elected …
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Utility of Walleyes and Saugeyes as Secondary Predators in Small South Dakota Impoundments
… (mean total length and relative growth) between walleyes and saugeyes were compared within and among water bodies. Visceral-somatic index (VSI), liversomatic index (LSI) and mesenteric fat index (MFI) were calculated for both species to further compare fish condition. Changes in panfish …
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First Year Growth and Survival of Walleyes in Power Plant Evaporation and Holding Reservoirs
<p>Walleyes (Stizostedion vitreum) were stocked at a rate of 88 fish/hectare in two South Dakota power plant reservoirs and their growth and survival were monitored for one year. Length, weight, and survival of walleyes were significantly (P < 0.05) different between the two reservoirs. The …
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Gizzard Shad Reproductive Biology and Predator-Prey Relations with Walleyes in Western South Dakota Reservoirs
Gizzard shad Dorosoma cepedianum were introduced into Angostura, Orman, and Shadehill reservoirs during the 1990s to potentially provide increased prey resources for walleye Sander vitreus. The objectives of this study were to assess gizzard shad reproductive biology and determine the extent to …
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Survival, Growth, Food Selection, and Alimentary Canal Development of Intensively Reared Walleyes and Yellow Perch
… sewage lagoon, were fed to newly hatched larval walleyes, (Stizostedion vitreun vitreun), and yellow perch, (Perca flavescens), to document survival, growth, food selection, and alimentary canal development of these fishes. Mean survival of walleyes for the 18 day period after hatching was 14.1%: …
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Food Habits, Growth, and Production of Young-of-the-Year Walleyes, Stizostedion vitreum vitreum (Mitchell), in a South Dakota Pond
… (Mitichell), fingerling on 13 June, 1973. Walleyes were monitored for growth rate and food habits until 13 September, 1973. Walleyes were removed from the pond using various methods in order to evaluate the efficiency of removal methods. The average total length and average weight of …
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Electrophoretic, Morphometric, and Meristic Comparisons of Walleye Broodstock in South Dakota
… and morphological variability among walleyes collected from three upper Missouri River tributaries and a glacial lake in South Dakota was investigated, and an upper Mississippi River stock was electrophoretically compared to the South Dakota stocks. Allele frequencies of two (MDH-3, …
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Bioenergetics of Walleye in Lake Oahe, South Dakota
… growth to determine the trophic interactions of walleyes in Lake Oahe, South Dakota. Monofilament gill nets were set at three depths in the water column (bottom, suspended, and surface) from May through September, 1994 to determine the effect of gill net placement on catch rates of walleyes. …
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Genetic evaluation of walleye (Stizostedion vitreum vitreum) stock structure and recruitment in Claytor Lake, Virginia
Walleyes from several geographic areas have been stocked in Claytor Lake since 1940. Fish presently in the reservoir may have originated from the stocking of Kansas, Nebraska, or Pennsylvania walleyes, or may possibly be descended from a native New River walleye strain. Recent stockings (1974, …
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Evaluation of Walleye X Sauger Hybrid Introductions in South Dakota Waters
… between small (length) age-o and age-1 walleyes Stizostedion vitreum and saugeyes (walleye X sauger Stizostedion canadense hybrids) collected from South Dakota lakes. Fishes were collected in early fall by electrofishing in both 1992 and 1993. Walleyes and saugeyes were identified using …
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Food Habits and Consumption Estimates of Walleyes Stocked as a Tool to Suppress Fathead Minnow Populations in West-Central Minnesota Wetlands
… were stocked in mid-May 2001 with 5.6 kg/ha of walleyes (~3.4 kg/ha age-2 walleyes and ~2.2 kg/ha age-3 walleyes) and walleye food habits were determined monthly from mid-May through mid-September 2002. Prey fishes composed greater than 82% of walleye diets on all sample dates at each wetland …
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A Comparison of Adult and Sub-Adult Walleye Movements and Distribution in Lakes Having Simple and Complex Morphometry
… during the spring at Lake Kampeska for walleyes Stizostedion vitreum, yellow perch Perea flavescens , and white suckers Catostomus commersoni. At Lake Enemy Swim, significant differences between littoral and limnetic sites occurred for yellow perch (spring and autumn) and rock bass …
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Relative Survival and Growth of Walleye and Saugeye Fingerlings Stocked in South Dakota Small Impoundments
… and growth (mean total length) between walleyes and saugeyes were compared across water bodies. For the 1997 year class, walleyes survived significantly better Cr= 0. 05) than saugeyes in Bode Pond and Jones Lake. Walleye survival also appeared slightly higher in Hanson Lake. Saugeyes …
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Evaluation of Walleye Fingerling Plants in Lake Darling, North Dakota
… (1929), however do not list the taking of walleyes in the Souris River which in 1938 was impounded to form Lake Darling. It is, therefore, questionable whether this species is native to this watershed. The effect of artificial propagation on the abundance of walleyes has received much …
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Limonology of Shadehill Reservoir, SD and Food Habit of Analysis of its Walleye Fishery
… production (19,031.5 mg DW/m2). Walleyes were captured at night in September, 1994 and May through September, 1995 by electrofishing and gillnetting. Of 201 walleye stomachs examined, 1 14 contained food. The relative importance (RI) index was used to evaluate the contribution of …
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Distribution, Movement, and Temperature Selection of Adult Walleye and Muskellunge in a Power Plant Cooling Reservoir
… and habitat selection of five adult walleyes (Stizostedion vitreum vitreum) and one adult muskellunge (Esox masquinongy), in a power plant cooling reservoir, were determined using temperature-sensitive ultrasonic transmitters, A total of 342 locations were obtained during the …
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Food Habits of Walleye and Sauger in Lake Sakakawea, North Dakota
Walleyes Stizostedion vitreum and saugers S. canadense were collected from White Earth Bay, Van Hook Arm, and Snake Creek Bay of Lake Sakakawea, North Dakota, from May to October, 1991. Food habits were determined and compared among sites within species and compared between species within sites. …
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Evaluation of a Power Plant Reservoir as a Fingerling Walleye Rearing Facility
… 1987 as a potential rearing site for fingerling walleyes (Stizostedion vitreum vitreum). Percent of stocked fish harvested was 0.21% (1,874 fish) in 1986 and 0.02% (129 fish) in 1987. Harvest was low because winterkill did not eliminate fish predators from the evaporation pond. Harvested …
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Development, Growth, and Behavioral Ecology of Walleye as Influenced by Sublethal Exposure to Dietary Selenium
… hatchability of eggs produced from broodstock walleyes. It has been documented that concentrations of dissolved selenium in the Cheyenne River have been higher than in other tributaries used for walleye broodstock collection the last 15 years. To determine whether selenium contributes to …
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