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Showing 1 to 20 of 89 for “"walleye"”.
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Bioenergetics of Walleye in Lake Oahe, South Dakota
… caloric density, and population dynamics of walleye Stizostedion vitreum were determined in 1993 and 1994 and combined with information on energetics and growth to determine the trophic interactions of walleyes in Lake Oahe, South Dakota. Monofilament gill nets were set at three depths in the …
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Indexing Walleye Recruitment in Eastern South Dakota Natural Lakes
<p>Because of the popularity of Walleyes and the need for recurrent supplemental stockings, substantial resources are allocated to their management in eastern South Dakota. For nearly 20 years, fall night electrofishing has been used to monitor age-0 Walleye population parameters, and index future …
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Walleye dermal sarcoma virus Orf C: a potential oncolytic therapy
… hypothesis of the included species is presented. Walleye dermal sarcoma virus (WDSV) is a complex retrovirus that causes the growth of multifocal, cutaneous tumors in walleye fish (Sander vitreus vitreus). These virus-induced tumors spontaneously regress on a seasonal basis. The WDSV genome …
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Evaluation of Walleye Fingerling Plants in Lake Darling, North Dakota
The walleye, Stizostadion vitreum vitreum (Mitchell) is the largest American member of the perch family (Peraidae); it represents the subfamily Luciopercinae in our waters. The walleye has a wide range of distribution which, according to hubs and lagler (1949), extends “From Great Slave Lake, 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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Exploring Interactions Between Walleye and Smallmouth Bass in South Dakota Waters
Walleye Sander vitreus are the most popular fish among South Dakota anglers, but smallmouth bass Micropterus dolomieu were introduced to provide new angling opportunities. Some walleye anglers reported subsequent reductions in the quality of walleye fisheries since the introduction of smallmouth …
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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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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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Intensive Culture of Largemouth Bass and Walleye Fry in Experimental Systems
… daily length increase was 0.93 mm. Newly hatched walleye (Stizostedion vitreum vitreum) fry were intensively cultured on a diet of live zooplankton under three conditions for 48 days. The fry were reared in tanks under constant illumination (375 lux), in tanks under reduced illumination (105 lux), …
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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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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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Growth, survival, and vulnerability to predation of stocked walleye (Stizostedion vitreum) fingerlings
… 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, walleye fingerlings averaging 35 mm and 53 mm (mean total length) were stocked in two ponds (3- and 7- …
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Toxicity of chlorpyrifos adsorbed on clay and humic acid to larval walleye
… (2) determine the most sensitive life stage of walleye exposed to chlorpyrifos, (3) evaluate the bioavailability of chlorpyrifos adsorbed on humic acid (HA) and Panther Creek (PC) clay to larval walleye (Stizostedion vitreum), and (4) determine the toxicity of Cedar River sediments and water to …
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Scientific Acoustic Data from Commercial Fishing Vessels: Eastern Bering Sea Walleye Pollock (Theragra chalcogramma)
… operating in the winter Eastern Bering Sea (EBS) walleye pollock (Theragra chalcogramma) fishery. The spatial and temporal attributes of winter EBS pollock aggregations are not well understood due to the inaccessibility of the area to research vessels during harsh winter months. With their high …
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Effects of landlocked alewife introduction on white bass and walleye populations, Claytor Lake, Virginia
… alewife introduction on the white bass and walleye populations were evaluated. Only white bass in age classes III and IV clearly exhibited an increase in total length following the introduction of landlocked alewives. Age and growth analysis for walleye, white bass, and alewives are given. …
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Factors Regulating Walleye Early Survival and Cohort Strength in Eastern South Dakota Glacial Lakes
Walleye Sander vitreus is an important ecological component of glacial lake aquatic communities in eastern South Dakota, and the most popular sport fish in the region. Walleye populations in this region exhibit consistently poor or annually-variable reproductive success and are regularly stocked in …
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Population Characteristics and Habitat Selection of Walleye in the Big Sioux River, South Dakota
Walleye were collected from the middle Big Siou.x River to assess the status of the population and detennine use of the habitat during winter. Eleven of 246 (4.5%) tagged walleye were caught by anglers over 250 km of the upper river. Analysis of scales from 322 fish yielded mean length (mm) at each …
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Limonology of Shadehill Reservoir, SD and Food Habit of Analysis of its Walleye Fishery
… an observed slow growth rate of the reservoir's walleye Stiostedion vitreum population. In addition, the food habits of the walleye population were examined to determine the trophic interactions of walleye in Shadehill Reservoir. Lirnnological parameters were collected from May, 1994 through May, …
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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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Development, Growth, and Behavioral Ecology of Walleye as Influenced by Sublethal Exposure to Dietary Selenium
A decline in the walleye Stizostedion vitreum sport fishery in lower Lake Oahe, South Dakota, was documented in the early l 980's and has since been attributed to poor natural reproduction and/or recruitment. Contaminants are highly suspected in lower Lake Oahe because of the low natural …
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