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Movement Distribution And Habitat Use Of A Riverine Walleye Sander Vitreus
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Book Synopsis Movement, Distribution and Habitat Use of a Riverine Walleye (Sander Vitreus) by : William Edward Chapman (II.)
Download or read book Movement, Distribution and Habitat Use of a Riverine Walleye (Sander Vitreus) written by William Edward Chapman (II.) and published by . This book was released on 2005 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1995, Kentucky Department of Fish and Wildlife Resources (KDFWR) biologists discovered the presence of what was once thought to have been a lost native river run walleye (Sander vitreus). The native population was thought to have been extirpated due to dams and stocking of Lake Erie walleye (since 1973) into Lake Cumberland, but KDFWR and collaborating geneticists confirmed the strain persisted in the Rockcastle River. The purpose of this study was to determine how the natives remained reproductively isolated from the introduced Lake Erie strain. Radio telemetry was used to determine home range, seasonal movement patterns, and spawning locations, as well as habitat characteristics for these natives in the Rockcastle River. Efforts were made to implant transmitters in 40 native and 20 Lake Erie walleye, but genetic analysis of fin clips revealed that all walleye captured were native. Thus, data collected from fall 2003 to the end of spring 2005 were for 60 native individuals. Movements indicated upstream spawning from March through early April; and widely varying downstream post-spawning movements. Seasonally, high water discharges in February and March were cues for upstream movements to pool areas below spawning sites at shallow gravel riffles. Twenty-four hour monitoring revealed fish to be most active during the night with peak activity at sunrise and sunset. Movement patterns resembled that of other studies, with respect to spawning migrations, limited summer activity, and increased activity in the fall, late winter, and spring seasons. In total, approximately 370 walleye were captured during this study, and all but one small individual (collected in the lower Rockcastle River) were confirmed as natives through genetic analysis. Based on these collecting efforts, it is likely there is negligible interaction between native and Lake Erie walleye. In addition, the native walleye tend to migrate farther upstream to spawn, thus, further reducing the chances for hybridization between the two strains. In conclusion, this study will aid the KDFWR in their preservation efforts of the native walleye in the Rockcastle River by suggesting better places to stock and identifying key river sections as walleye spawning sites that should remain undisturbed.
Book Synopsis Movement, Distribution, and Habitat Use of Walleye (Stizostedion Vitreum) in Laurel River Lake, Kentucky by : John D. Williams
Download or read book Movement, Distribution, and Habitat Use of Walleye (Stizostedion Vitreum) in Laurel River Lake, Kentucky written by John D. Williams and published by . This book was released on 1998 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Movement, distribution, and habitat use of walleye (Stizostedion vitreum) in Laurel River Lake, Kentucky were determined by radio-tracking 35 walleye for 605 days (mean = 249 days) from March 1994 through November 1995. The goal of this study was to increase the angler utilization of walleye in Laurel River Lake by educating anglers on walleye movement patterns, habitat usage, and distribution within the lake.
Book Synopsis Habitat Suitability Information by : Thomas E. McMahon
Download or read book Habitat Suitability Information written by Thomas E. McMahon and published by . This book was released on 1984 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Walleye Spawning, Movements, and Habitat Usage in Tombigbee River Drainages by : Roger William Kingery
Download or read book Walleye Spawning, Movements, and Habitat Usage in Tombigbee River Drainages written by Roger William Kingery and published by . This book was released on 1988 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Walleye (Sander Vitreus) Movement Ecology in Lake Winnipeg, Canada by : Nicole Turner
Download or read book Walleye (Sander Vitreus) Movement Ecology in Lake Winnipeg, Canada written by Nicole Turner and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Identifying differences in movement behaviour and the variance in behavioural strategies that may exist across a single species occupying a heterogeneous landscape can provide valuable ecological and evolutionary insights; taking movement heterogeneity into account in management and conservation efforts may ultimately improve the sustainability of species with significant economic and ecological value, such as walleye (Sander vitreus). Lake Winnipeg (Manitoba, Canada) supports the second largest commercial fishery for walleye in North America. The lake is divided into two relatively separate basins connected by an intermediate channel, which differ dramatically in both abiotic and biotic features. Despite this, little is known about whether (or how) walleye move or use variable habitats throughout the lake. Historical mark-recapture models from tagged walleye revealed low but measurable rates (0.3-1.2%) of movement annually between the north and south basins of Lake Winnipeg. Contemporary estimates using acoustic telemetry data detected a greater but comparably low rate of transition between the basins annually for walleye (7-8.5%). Both historical and current models revealed that movement was more likely to occur in a south to north direction. Additionally, annual survival across both basins of the lake was higher historically (54%) then it is currently (37%). To further investigate contemporary patterns of inter-basin movement, I assessed female walleye tagged across the south. I uncovered repeatable patterns of individual fish movement, where migratory walleye consistently travelled into the north basin for a period of time, and resident walleye remained within the south basin. I found that migrants significantly increased home (95%) and core (50%) ranges during the summer and fall associated with a northern shift in latitudinal distribution. Finally, putative repeat spawning in the year following tagging appeared to be greater for migrants (65%) compared to residents (40%). This thesis describes the first formal description of walleye movement in Lake Winnipeg, and suggests connections between movement patterns (i.e., migrants and residents) to potential differences in life history (i.e., differential probability of repeat spawning). Direct movement results presented here should prove useful to fisheries management and policy for both commercial and recreational activities across the separately managed basins of Lake Winnipeg.
Book Synopsis Seasonal Movements, Habitat Use, and Spawning Areas of Walleye, Stizostedion Vitreum, and Sauger, S. Canadense, in Pool 2 of the Upper Mississippi River by : R. Scott Gangl
Download or read book Seasonal Movements, Habitat Use, and Spawning Areas of Walleye, Stizostedion Vitreum, and Sauger, S. Canadense, in Pool 2 of the Upper Mississippi River written by R. Scott Gangl and published by . This book was released on 2000 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seasonal distribution, Habitat Use, and Spawning locations of Walleye Stizostedion Vitreum and Sauger S. Canadese in Pool 4 of the upper Mississippi River, with special emphasis on winter distribution related to a thermally altered environment by :
Download or read book Seasonal distribution, Habitat Use, and Spawning locations of Walleye Stizostedion Vitreum and Sauger S. Canadese in Pool 4 of the upper Mississippi River, with special emphasis on winter distribution related to a thermally altered environment written by and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seasonal Distribution, Habitat Use, and Spawning Locations of Walleye, Stizostedion Vitreum, and Sauger, S. Canadense, in Pool 4 of the Upper Mississippi River, with Special Emphasis on Winter Distribution Related to Thermally Altered Environment by : Brian S. Ickes
Download or read book Seasonal Distribution, Habitat Use, and Spawning Locations of Walleye, Stizostedion Vitreum, and Sauger, S. Canadense, in Pool 4 of the Upper Mississippi River, with Special Emphasis on Winter Distribution Related to Thermally Altered Environment written by Brian S. Ickes and published by . This book was released on 2000 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Movement Patterns and Habitat Utilization of Walleye by : Clinton B. Hall
Download or read book Movement Patterns and Habitat Utilization of Walleye written by Clinton B. Hall and published by . This book was released on 1982 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biology, Management, and Culture of Walleye and Sauger by : Bruce A. Barton
Download or read book Biology, Management, and Culture of Walleye and Sauger written by Bruce A. Barton and published by . This book was released on 2011-01-01 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Variable Movements After Catch-and-release Angling and Isotope Niches of Walleye (Sander Vitreus) and Sauger (S. Canadensis). by : Jessica Carroll Butt
Download or read book Variable Movements After Catch-and-release Angling and Isotope Niches of Walleye (Sander Vitreus) and Sauger (S. Canadensis). written by Jessica Carroll Butt and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Walleye (Sander vitreus) and sauger (S. canadensis) are closely related freshwater species that are ecologically and economically important throughout North America. These two species are sympatric in many areas, and are often regulated as a single entity. However, the important similarities and differences that exist between these species in the context of various management issues remain uncertain. The first chapter of my thesis addresses the effects of catch-and-release fishing that is part of angling tournaments on walleye and sauger. Catch-and-release tournaments are popular in Saskatchewan and other areas, but frequently prompt management concerns regarding fish health and mortality. Potential sub-lethal effects on movement and habitat use are particularly poorly studied. I tracked both walleye and sauger after catch-and-release using telemetry following four 2015 tournaments. My objectives were to: (1) describe post-release movements; and (2) evaluate factors that may affect postrelease behaviour. The initial movements I observed were highly variable; for example, some fish moved less than 1 km, whereas others moved long distances, the maximum recorded being 31 km. All large movements I observed were made by walleye, while the farthest a sauger moved was 2 km. Fish exited the release area (500 m) faster (2.6±1.1 days versus 3.9±1.6 - 4.4±1.7 days) and moved farther in the first 48 hours (3,712.8±4,427.9 m versus 608.1±392.1 - 1065.3±687.8 m) at one tournament compared to the other three. Stress scores were significantly lower at this tournament (3.50±0.73 versus 4.60±1.17 - 4.75±1.48), and an important negative predictor of fish movement. However, there were few common predictors of movement among tournaments. I confirmed delayed mortality of tagged fish at only one tournament, which was high (45%) and mostly due to avian predation. I conclude that walleye and sauger behaviour after tournaments varies widely, likely due to varying tournament and environmental conditions. The understanding of factors that modify fish behaviour remains limited and warrants further study. The second chapter of my thesis assesses the ecological relationship between walleye and sauger when they co-exist. Limited information is available regarding potential niche partitioning across different time scales by these sympatric congeners, though I expected niche overlap to be high during early ages and lower later in life. I used multi-tissue (liver, muscle, and bone layers) isotopic niche analysis to quantify overlap by these species in two large reservoirs in Saskatchewan. Population niche size was larger for sauger (1.73 - 3.60 ‰2) than walleye (0.51 - 2.61 ‰2) in Lake Diefenbaker, but this trend was reversed in Tobin Lake (sauger = 0.54 - 2.57 ‰2; walleye = 1.30 - 2.94 ‰2). Inter-species niche overlap at the population level also varied by site (Diefenbaker = 3- 19%, Tobin = 9-31%), and niche partitioning was evident in both systems at all time scales. The niche size of individual fish and levels of intra- and inter-specific overlap were highly variable by site. Walleye and sauger appear to use different resources but the factors influencing variation in niche size and overlap are currently unclear. My findings indicate there is considerable variation in the response of walleye and sauger to catch-and-release angling, as well as in their resource use and niche overlap. The important differences I describe between these species suggest that a re-evaluation of regulating them as one entity may be warranted.
Book Synopsis Seasonal movements, Habitat Use, and Spawning areas of Walleye Stizostedion Vitreum and Sauger S. Canadese in Pool 2 of the upper Mississippi River by :
Download or read book Seasonal movements, Habitat Use, and Spawning areas of Walleye Stizostedion Vitreum and Sauger S. Canadese in Pool 2 of the upper Mississippi River written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Walleye Habitat Use, Spawning Behavior, and Egg Deposition in Sandusky Bay, Lake Erie by : Adam L. Thompson
Download or read book Walleye Habitat Use, Spawning Behavior, and Egg Deposition in Sandusky Bay, Lake Erie written by Adam L. Thompson and published by . This book was released on 2009 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Understanding habitat selection in fish can reveal areas critical for a population's continuation in the ecosystem. In systems experiencing habitat alterations or reductions in population sizes, identifying habitat use takes on increased importance. To facilitate our understanding of potential factors limiting the success of walleye (Sander vitreus) in Sandusky Bay, Lake Erie, we combined walleye locations determined from radio telemetry with habitat predictor variables to model habitat use and reveal sex-specific patterns of habitat use throughout the spawning season (Chapter 2). Models revealed that the presence of preferred walleye spawning substrate, gravel and cobble, was an important predictor of walleye locations during the entire spawning season, and depth and distance from shore were important particularly prior to the spawn. In examining sex-specific patterns of habitat use, we discovered that males were more likely to occur over gravel and cobble substrates than females. We hypothesize that males establish position in these areas in anticipation of spawning females. Only a small proportion of walleye tagged in Sandusky Bay migrated to upstream spawning grounds (2 of 197; 1%). To confirm whether walleye spawning occurs in Sandusky Bay and to analyze how spawning substrate might affect egg deposition rates and viability, we compared eggs collected using spawning mats from gravel/cobble and sand/silt substrates (Chapter 3). Egg deposition and egg viability were not significantly different between substrates, and the majority of walleye eggs were collected from one site that contained gravel and cobble. The combined results of this investigation reveal that the Sandusky Bay is a spawning ground for walleye and that preferred spawning substrate is an important factor predicting the location of walleye during the spawn. Because the amount of spawning habitat in this system has declined by an estimated 92% during the past century, we recommend that conservation and restoration steps be taken to preserve this walleye spawning population.
Book Synopsis The Effect of Water Clarity on Walleye (Stizostedion Vitreum) : Habitat and Yield by : Nigel Paul Lester
Download or read book The Effect of Water Clarity on Walleye (Stizostedion Vitreum) : Habitat and Yield written by Nigel Paul Lester and published by Percid Community Synthesis. This book was released on 2002 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Great Lakes Water Wars by : Peter Annin
Download or read book The Great Lakes Water Wars written by Peter Annin and published by Island Press. This book was released on 2009-08-25 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Great Lakes are the largest collection of fresh surface water on earth, and more than 40 million Americans and Canadians live in their basin. Will we divert water from the Great Lakes, causing them to end up like Central Asia's Aral Sea, which has lost 90 percent of its surface area and 75 percent of its volume since 1960? Or will we come to see that unregulated water withdrawals are ultimately catastrophic? Peter Annin writes a fast-paced account of the people and stories behind these upcoming battles. Destined to be the definitive story for the general public as well as policymakers, The Great Lakes Water Wars is a balanced, comprehensive look behind the scenes at the conflicts and compromises that are the past-and future-of this unique resource.
Book Synopsis Integrating Ecohydraulics in River Restoration by : José Maria Santos
Download or read book Integrating Ecohydraulics in River Restoration written by José Maria Santos and published by MDPI. This book was released on 2020-03-16 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rivers have been intensively degraded due to increasing anthropogenic impacts from a growing population in a continuously developing world. Accordingly, most rivers suffer from pressures as a result of increasing dam and weir construction, habitat degradation, flow regulation, water pollution/abstraction, and the spread of invasive species. Science-based knowledge regarding solutions to counteract the effects of river degradation, and melding principles of aquatic ecology and engineering hydraulics, is thus urgently needed to guide present and future river restoration actions. This Special Issue gathers a coherent set of studies from different geographic contexts, on fundamental and applied research regarding the integration of ecohydraulics in river restoration, ranging from field studies to laboratory experiments that can be applied to real-world challenges. It contains 13 original papers covering ecohydraulic issues such as river restoration technologies, sustainable hydropower, fish passage designs and operational criteria, and habitat modeling. All papers were reviewed by international experts in ecology, hydraulics, aquatic biology, engineering, geomorphology, and hydrology. The papers herein well represent the wide applicability of ecohydraulics in river restoration and serve as a basis to improve current knowledge and management and to reduce arguments between different interests and opinions.
Book Synopsis Assessing Potential Spawning Habitat and Barriers to Migratory Walleye on the Sandusky River, Ohio by : Madison R. Myers
Download or read book Assessing Potential Spawning Habitat and Barriers to Migratory Walleye on the Sandusky River, Ohio written by Madison R. Myers and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sandusky River, Ohio, is one of the major tributaries of Lake Erie that supports walleye (Sander vitreus) reproduction. The goal of this study was to assess spawning habitat in the Sandusky River following the removal of the Ballville Dam and to determine if walleye can access habitat that was previously unavailable by migrating past a series of ice control structures. To determine the quantity of spawning habitat, a Habitat Suitability Index was calculated from the mouth of the river in Muddy Creek Bay to the first low-head dam in Tiffin, Ohio. A fine scale model was created that encompassed the ice control structures area and swim speed comparisons were done to determine if the area was passable. This study shows that there is suitable spawning habitat for walleye upstream and downstream of the former Ballville Dam, and that walleye can migrate passed the ice control structure area during certain conditions.
