Walleye (Sander Vitreus) Movement Ecology in Lake Winnipeg, Canada

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Book Rating : 4.:/5 (128 download)

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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.

Intraspecific Variation of Walleye (Sander Vitreus) in Ontario, Canada and Lake Winnebago, WI

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ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.:/5 (815 download)

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Book Synopsis Intraspecific Variation of Walleye (Sander Vitreus) in Ontario, Canada and Lake Winnebago, WI by : Mark H. Schmitz

Download or read book Intraspecific Variation of Walleye (Sander Vitreus) in Ontario, Canada and Lake Winnebago, WI written by Mark H. Schmitz and published by . This book was released on 2011 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Behavioral Ecology of Walleye (Sander Vitreus)

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ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.:/5 (131 download)

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Book Synopsis The Behavioral Ecology of Walleye (Sander Vitreus) by : Andrew Peter Bade

Download or read book The Behavioral Ecology of Walleye (Sander Vitreus) written by Andrew Peter Bade and published by . This book was released on 2021 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many migratory animals time reproduction using environmental cues (e.g., photoperiod) that signal favorable conditions for offspring (e.g., food availability). However, environmental change can decouple these cues from the conditions relevant to offspring success. In turn, variation in reproductive behaviors may be critical to population persistence in a changing environment. For example, while natal homing can lead to valuable local adaptations in a stable environment, straying to new breeding sites can buffer against environmental change. Among exploited species, knowledge of reproductive behavior, such as spawn timing (phenology) and spawning site selection, has proven useful to fisheries management by influencing angling dynamics, estimates of biological reference points, and stock delineations. Thus, a well-developed understanding of reproductive phenology, breeding site selection, and fishery dynamics could help agencies effectively conserve and manage fisheries in ecosystems experiencing environmental change. Accordingly, my dissertation research sought to better understand the reproductive behaviors and angling dynamics of Lake Erie’s walleye population. In collaboration with other researchers and agency biologists, I used acoustic telemetry, creel surveys, environmental monitoring data, and quantitative techniques to discern the spawning behaviors and angling dynamics of this population. We assessed the timing of residency in spawning sites, focusing on how environmental cues and individual characteristics drive observed variation (Chapter 2), developed a quantitative framework to estimate the frequencies of each potential spawning site selection strategy (Chapter 3), demonstrated sex based-differences in spawning behavior and male-biased walleye harvest during the spawning season (Chapter 4), and modeled the impact of fishery characteristics and angler behaviors on recreational catch outcomes (Chapter 5). Each chapter generated new insights to the benefit of fisheries management through advances in our understanding of reproductive ecology and angling dynamics. In Chapter 2, we found that the timing of residency in spawning sites differed between sexes and among spawning locations and was controlled by photoperiod and temperature. The varying responses to warming suggest that reproductive resilience is promoted by conserving local spawning populations and a broad age structure. The findings from Chapter 3 demonstrated that, although spawning site fidelity and annual spawning are common, apparent skipped spawning also occurs (~ 14% of observations). Accounting for this potential skipped spawning led to revised biological reference points, owing to adjusted estimates of spawning stock biomass. Additionally, although few walleye strayed, the pattern of straying indicated that some stocks mix heavily. In Chapter 4, we found strong evidence for sex-specific spawning behaviors, with males occupying spawning grounds longer than females, which helped explain male-biased walleye harvest on the spawning grounds. Lastly, in Chapter 5, modeling creel survey data showed that angler decisions influenced catch outcomes more than abundance of the targeted walleye population. The findings from this chapter can help anglers maximize their probability of fishing success, given desired catch outcomes. The improved understanding of Lake Erie walleye reproductive behavior, angling dynamics, and the relationships between them, should help agencies worldwide keep their valued fish populations sustainable in the face of continued environmental change.

Variable Movements After Catch-and-release Angling and Isotope Niches of Walleye (Sander Vitreus) and Sauger (S. Canadensis).

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)

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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.

Movement, Distribution and Habitat Use of a Riverine Walleye (Sander Vitreus)

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ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (617 download)

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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.

Freshwater Fisheries Ecology

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Publisher : John Wiley & Sons
ISBN 13 : 1118394402
Total Pages : 920 pages
Book Rating : 4.1/5 (183 download)

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Book Synopsis Freshwater Fisheries Ecology by : John F. Craig

Download or read book Freshwater Fisheries Ecology written by John F. Craig and published by John Wiley & Sons. This book was released on 2016-01-12 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inland fisheries are vital for the livelihoods and food resources of humans worldwide but their importance is underestimated, probably because large numbers of small, local operators are involved. Freshwater Fisheries Ecology defines what we have globally, what we are going to lose and mitigate for, and what, given the right tools, we can save. To estimate potential production, the dynamics of freshwater ecosystems (rivers, lakes and estuaries) need to be understood. These dynamics are diverse, as are the earths freshwater fisheries resources (from boreal to tropical regions), and these influence how fisheries are both utilized and abused. Three main types of fisheries are illustrated within the book: artisanal, commercial and recreational, and the tools which have evolved for fisheries governance and management, including assessment methods, are described. The book also covers in detail fisheries development, providing information on improving fisheries through environmental and habitat evaluation, enhancement and rehabilitation, aquaculture, genetically modified fishes and sustainability. The book thoroughly reviews the negative impacts on fisheries including excessive harvesting, climate change, toxicology, impoundments, barriers and abstractions, non-native species and eutrophication. Finally, key areas of future research are outlined. Freshwater Fisheries Ecology is truly a landmark publication, containing contributions from over 100 leading experts and supported by the Fisheries Society of the British Isles. The global approach makes this book essential reading for fish biologists, fisheries scientists and ecologists and upper level students in these disciplines. Libraries in all universities and research establishments where biological and fisheries sciences are studied and taught should have multiple copies of this hugely valuable resource. About the Editor John Craig is Editor-in-Chief of the Journal of Fish Biology and has an enormous range of expertise and a wealth of knowledge of freshwater fishes and their ecology, having studied them around the globe, including in Asia, North America, Africa, the Middle East and Europe. His particular interests have been in population dynamics and life history strategies. He is a Fellow of the Linnean Society of London and the Royal Society of Biology.

Seasonal Movement, Habitat Use and Spawning Activity of Walleye (Sander Vitreus) in Candle Lake, Saskatchewan as Determined by Ultrasonic Telemetry

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Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (816 download)

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Book Synopsis Seasonal Movement, Habitat Use and Spawning Activity of Walleye (Sander Vitreus) in Candle Lake, Saskatchewan as Determined by Ultrasonic Telemetry by : Saskatchewan. Department of Environment. Resource Stewardship Branch

Download or read book Seasonal Movement, Habitat Use and Spawning Activity of Walleye (Sander Vitreus) in Candle Lake, Saskatchewan as Determined by Ultrasonic Telemetry written by Saskatchewan. Department of Environment. Resource Stewardship Branch and published by . This book was released on 2003 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Spatial and Seasonal Variation in Diet, Growth and Condition of Walleye (Sander Vitreus), Sauger (Sander Canadensis) and Dwarf Walleye (Sander Vitreus) in Lake Winnipeg, Manitoba

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Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.:/5 (858 download)

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Book Synopsis Spatial and Seasonal Variation in Diet, Growth and Condition of Walleye (Sander Vitreus), Sauger (Sander Canadensis) and Dwarf Walleye (Sander Vitreus) in Lake Winnipeg, Manitoba by : Kathleen Sheppard

Download or read book Spatial and Seasonal Variation in Diet, Growth and Condition of Walleye (Sander Vitreus), Sauger (Sander Canadensis) and Dwarf Walleye (Sander Vitreus) in Lake Winnipeg, Manitoba written by Kathleen Sheppard and published by . This book was released on 2013 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Walleye Wisdom

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Publisher : Outdoor Sportsman Group
ISBN 13 : 9780960525416
Total Pages : 300 pages
Book Rating : 4.5/5 (254 download)

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Book Synopsis Walleye Wisdom by : Al Lindner

Download or read book Walleye Wisdom written by Al Lindner and published by Outdoor Sportsman Group. This book was released on 1983 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete guide to fishing walleyes anywhere from St. Lawrence to the Columbia River, and from the Canadian north to the canyon reservoirs of the Southwest.

Investigating the Genomics Underlying Fish Movement and Behaviour

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)

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Book Synopsis Investigating the Genomics Underlying Fish Movement and Behaviour by : Matthew John Thorstensen

Download or read book Investigating the Genomics Underlying Fish Movement and Behaviour written by Matthew John Thorstensen and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Movement of organisms through space has large effects on population dynamics, reproduction, and persistence. Movement of genetic material can sway the evolution of populations by influencing local adaptation and population structure. Therefore, information on movement is of fundamental and conservation importance for wild organisms, including freshwater fishes that are especially vulnerable to environmental change. Movement has been connected to environmental, physiological, and genomic factors in fish, although most research has focused on anadromous species. Walleye (Sander vitreus) is an economically and culturally important obligate freshwater fish with a native range across North America, in which movement is relatively less well-understood than in anadromous fish. Lake Winnipeg walleye are the largest component of the second-largest freshwater commercial fishery in Canada, contribute to a large recreational fishery, and provide subsistence for First Nations communities around the lake. To provide a genomic context for movement studies, Lake Winnipeg walleye population structure was established using genomic variants from RNA, where a metapopulation characterized by basin-specific subpopulations was found. Gene flow was found to likely move from south to north in the lake. Gene flow between nearby Lake Manitoba and Lake Winnipeg was found to be slightly stronger going into Lake Winnipeg, but low overall (approximately 0.0027 fish per year) and only started between 550 and 1,219 years ago. Signatures of protein degradation were higher in north basin walleye of Lake Winnipeg, consistent with a possibly longer travel distance needed for those fish to reach spawning areas. Movement within Lake Winnipeg walleye was studied in the context of maximum residency, where fish that stayed in any one ecological zone were given a 1.0 residency value. Fish that spent an even proportion of time among three ecological zones (south basin, narrows, north basin) were given a 0.3"3" ̅ residency value. No genomic variants were found to strongly affect residency, but 81.6% of variation in maximum residency was explained when using a polygenic approach. These results provide information that can inform future management and demonstrate the evolutionary and biochemical signatures that interact with different perspectives of walleye movement.

The Life History of Walleye (Sander Vitreus) in Honeoye Lake, New York

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ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (689 download)

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Book Synopsis The Life History of Walleye (Sander Vitreus) in Honeoye Lake, New York by : John C. Foust

Download or read book The Life History of Walleye (Sander Vitreus) in Honeoye Lake, New York written by John C. Foust and published by . This book was released on 2005 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Seasonal Movement, Habitat Use and Spawning Activity of Walleye (Sander Vitreus) in Candle Lake, Saskatchewan as Determined by Ultrasonic Telemetry : Job Completion Report, May 2003

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Publisher : Prince Albert : Saskatchewan Environment, Resource Stewardship Branch
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (569 download)

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Book Synopsis Seasonal Movement, Habitat Use and Spawning Activity of Walleye (Sander Vitreus) in Candle Lake, Saskatchewan as Determined by Ultrasonic Telemetry : Job Completion Report, May 2003 by : Koob, Murray

Download or read book Seasonal Movement, Habitat Use and Spawning Activity of Walleye (Sander Vitreus) in Candle Lake, Saskatchewan as Determined by Ultrasonic Telemetry : Job Completion Report, May 2003 written by Koob, Murray and published by Prince Albert : Saskatchewan Environment, Resource Stewardship Branch. This book was released on 2004 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Using Microsatellite and Mitochondrial DNA Variation to Investigate Population Structure of Walleye (Sander Vitreus) in Lake Winnipeg

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis Using Microsatellite and Mitochondrial DNA Variation to Investigate Population Structure of Walleye (Sander Vitreus) in Lake Winnipeg by : Stephanie Maxwell Backhouse

Download or read book Using Microsatellite and Mitochondrial DNA Variation to Investigate Population Structure of Walleye (Sander Vitreus) in Lake Winnipeg written by Stephanie Maxwell Backhouse and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Status and Ecology of Walleye (Sander Vitreus) and Sauger (Sander Canadense) in the Wabash River, Indiana

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Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (556 download)

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Book Synopsis Status and Ecology of Walleye (Sander Vitreus) and Sauger (Sander Canadense) in the Wabash River, Indiana by : David L. Weitzel

Download or read book Status and Ecology of Walleye (Sander Vitreus) and Sauger (Sander Canadense) in the Wabash River, Indiana written by David L. Weitzel and published by . This book was released on 2004 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Great Lakes Water Wars

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Publisher : Island Press
ISBN 13 : 159726637X
Total Pages : 321 pages
Book Rating : 4.5/5 (972 download)

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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.

Biology, Management, and Culture of Walleye and Sauger

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Publisher :
ISBN 13 : 9781934874226
Total Pages : 600 pages
Book Rating : 4.8/5 (742 download)

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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:

Pre-And Post Spawning Movements of Walleye, Stizostedion Vitreum, in Southern Indian Lake, Manitoba

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ISBN 13 :
Total Pages : 35 pages
Book Rating : 4.:/5 (255 download)

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Book Synopsis Pre-And Post Spawning Movements of Walleye, Stizostedion Vitreum, in Southern Indian Lake, Manitoba by : R. A. Bodaly

Download or read book Pre-And Post Spawning Movements of Walleye, Stizostedion Vitreum, in Southern Indian Lake, Manitoba written by R. A. Bodaly and published by . This book was released on 1980 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: