Download or read book Identifying White Bass Natal Origins and Quantifying Walleye and White Bass Stock Contribution in Lake McConaughy Nebraska written by Garrett Rowles and published by . This book was released on 2019 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake McConaughy is a socioeconomically important reservoir in Nebraska that provides a diversity of sport fishing opportunities. Stocking of White Bass and Walleye has occurred in Lake McConaughy since 1993 and 1943, respectively. Despite stocking efforts, White Bass relative abundances have been consistently below desired sampling levels and relative abundances of Walleye have declined but remain above the desired sampling objective. This study was designed to identify natal origins and quantify the contribution of hatchery-produced White Bass using otolith microchemistry and to quantify the contribution of hatchery-produced Walleye to the age-0 population. The first objective of this study was to identify spatially distinct and temporally stable microelements in Lake McConaughy, the North Platte River, and a tributary of the North Platte River to later us in identifying natal origins of White Bass. Elemental ratios of Sr:Ca, Ba:Ca, Mg:Ca, and Mn:Ca were found to be spatially distinct between types of location (i.e. "river," "tributary," or "reservoir"), but not between individual sites. All elemental ratios except for Mg:Ca were found to be temporally stable. The second objective was to quantify the contribution of hatchery-produced White Bass and identify natal origins of White Bass. White Bass were collected from the North Platte state fish hatchery and from cages placed in Lake McConaughy and the North Platte River to obtain known location elemental signatures. K nearest neighbor analysis identified 60 and 76% of collected age-0 White Bass as naturally-produced in 2017 and 2018, respectively. Finally, this study aimed to quantify the contribution of hatchery-produced Walleye in Lake McConaughy. Age-0 Walleye were collected from Lake McConaughy from 2016 - 2018 and otoliths were examined for OTC marks. Hatchery-produced age-0 Walleye comprised 88 - 96% of all age-0 Walleye collected each year. Additionally, mean total length of hatchery-produced age-0 Walleye was larger than that of naturally-produced age-0 Walleye.
Download or read book Early Life history Characteristics of Juvenile Fishes in Lake McConaughy Nebraska written by Matthew Perrion and published by . This book was released on 2016 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial Distribution of Fishes and Population Dynamics of Sportfish in Lake McConaughy Nebraska written by Benjamin J. Schall and published by . This book was released on 2016 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparing White Bass Recruitment Sources and Population Demographics Among the Large Rivers of Illinois written by Kennan Francis Bruening and published by . This book was released on 2021 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: White Bass Morone chrysops is a native, migratory sportfish that is found throughout the central United States in large rivers and riverine impoundments. White Bass migrate into tributaries and riverine portions of reservoirs to spawn during spring. These spawning migrations concentrate fish and may make them more susceptible to angling pressure. White Bass have been well studied in reservoirs throughout the central United States since the early 2000's when fisheries management practices shifted from population management to fish assemblage management. However, despite the increase in White Bass research in reservoirs, large river populations remain understudied. My thesis research used otolith microchemistry to assess the role of tributaries in supporting White Bass populations in the Ohio, Wabash, Middle Mississippi, Upper Mississippi and Illinois rivers and to compare population demographics (recruitment, growth, and mortality) among rivers. Water samples were collected from each of the five rivers and their tributaries and analyzed for strontium, barium, and calcium concentrations to calculate molar elemental ratios (Sr:Ca, Ba:Ca) and determine if differences in water Sr:Ca and Ba:Ca observed in prior studies persisted among large rivers and their tributaries. Otoliths from White Bass collected from locations where their movement was constrained (e.g., impoundments where dam passage is not possible) were analyzed to characterize relationships between water chemistry (Sr:Ca and Ba:Ca) and White Bass otolith chemistry. I then applied these regression relationships in conjunction with water chemistry data from each of the five large rivers and tributaries in the study area to estimate ranges of otolith Sr:Ca and Ba:Ca for White Bass in each of the rivers and tributaries. Otolith core Sr:Ca and Ba:Ca from White Bass collected from the Ohio, Wabash, Middle Mississippi, Upper Mississippi, and Illinois rivers were compared with predicted river-specific ranges of otolith Sr:Ca and Ba:Ca to identify natal river for each fish. All fish utilized for microchemistry were aged and used to create an age-at-length key from which vital rate parameters were calculated. Microchemistry results indicated that White Bass origin proportions differed among rivers. In rivers with more prominent differences in water Sr:Ca compared to their tributaries and upstream river segments, natal river assignments were more definitive and indicated that large river White Bass stocks are being strongly supplemented by tributaries and other upriver locations. In areas with small differences in water chemistry among potential natal rivers, origin designations were less definitive due to partially overlapping ranges of Sr:Ca and Ba:Ca among locations. A study using genetics to assess natal river fidelity in spawning White Bass should be conducted to better assess stocks and population structure in the large rivers. White Bass populations were dominated by age 0 fish (young of the year). Vital rate parameters were consistent with those of reservoir populations in the central United States, with riverine White Bass exhibiting fast growth, high mortality, and variable recruitment. My results indicated that a holistic approach to large river management should be considered when managing White Bass. Management regulations should reflect those in well studied reservoir populations based upon my findings, but future projects should expand upon our data and focus on population modeling of White Bass in these systems to better understand fishing and natural mortality, especially in areas of concentrated fish during the spawning season.
Download or read book EXAMINATION OF SPAWNING STOCK SPECIFIC RECRUITMENT AND MIGRATION DYNAMICS IN LAKE ERIE WHITE BASS written by Jeremiah J. Davis and published by . This book was released on 2013 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Differential and annually varying recruitment contributions by different spawning-stocks under varying abiotic conditions may be an underlying factor in high inter-annual recruitment variability in Lake Erie fish populations. The 2011 spawning season was characterized by very high discharge conditions. To investigate recruitment contributions from different spawning-stocks during 2011 I utilized otolith micro-chemical analyses to determine the natal origins of young of the year white bass (Morone chrysops) that composed the Lake Erie Central Basin population during August 2011. The otoliths of fishes have unique properties that allow them to act as reliable recorders of environmental history. Under the abiotic conditions that characterized the 2011 season, >80% of the successful recruits to the population were produced by the Sandusky River spawning-stock. Other spawning-stocks made limited contributions. To examine causative factors behind these differential recruitment contributions the otolith micro-chemistry dataset was spatially linked with the physical structure of the otolith to estimate the length at which individuals emigrated from near shore nursery habitats. Results of this study showed that surviving individuals from the Sandusky spawning-stock were retained in nursery habitats to significantly larger sizes before emigration to the Central Basin than individuals from the Maumee spawning-stock. Thus, during spawning seasons characterized by high discharge, the Sandusky River spawning-stock provides the Lake Erie white bass population with substantial contributions to year classes because the Sandusky system has the propensity for retention of early life stages of fishes within productive nursery habitat.
Download or read book Habitat Selection by Spawning Walleye and White Bass in Irrigation Reservoirs of the Republican River Basin Nebraska written by Dustin R. Martin and published by . This book was released on 2008 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Proposed Standardized Sampling Approach for Juvenile Walleye Sander Vitreus and White Bass Morone Chrysops Using Gear and season specific Catch Rates written by Brett T. Miller and published by . This book was released on 2017 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Walleye and White Bass Recruitment in Southwest Nebraska Irrigation Reservoirs written by Jason Andrew DeBoer and published by . This book was released on 2013 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: Walleye Sander vitreus and white bass Morone chrysops are among the most popular sportfish in the reservoirs of the Great Plains. Despite considerable effort by the Nebraska Game and Parks Commission stocking walleye and managing reservoirs for walleye and white bass, populations of walleye and white bass in southwest Nebraska reservoirs are dynamic, as erratic recruitment has led to “boom and bust” fisheries for these two species. We investigated 1) factors regulating walleye and white bass recruitment during an 18-year period at five reservoirs, and 2) walleye spawning ecology at two reservoirs that differ in their degree of environmental variability. The variables in the candidate model sets for walleye were most-often related to water-level drawdown. The variables in the candidate model sets for white bass were most-often related to adult white bass abundance and condition, and to factors affecting over-winter mortality of juvenile white bass. Despite significant differences in female body and liver masses between reservoirs that differ in environmental variability, we found no difference in reproductive investment measured by egg size and fecundity, which is counterintuitive to life-history theory.
Download or read book Fish Fact Sheets written by and published by . This book was released on 2011 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Inland Fisheries Management in North America written by Christopher C. Kohler and published by . This book was released on 1999 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The book covers fishery assessments, habitat and community manipulations, and common practices for managing stream, river, lake, and anadromous fisheries. Chapters on history; ecosystem management; management processes; communications with the public; introduced, undesirable, and endangered species; and the legal and regulatory frameworks provide the context for modern fisheries management." From fisheries.org.
Download or read book Birds as Monitors of Environmental Change written by R.W. Furness and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: Birds as Monitors of Environmental Change looks at how bird populations are affected by pollutants, water quality, and other physical changes and how this scientific knowledge can help in predicting the effects of pollutants and other physical changes in the environment.
Download or read book Buyology written by Martin Lindstrom and published by Currency. This book was released on 2010-02-02 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: NEW YORK TIMES BESTSELLER • “A fascinating look at how consumers perceive logos, ads, commercials, brands, and products.”—Time How much do we know about why we buy? What truly influences our decisions in today’s message-cluttered world? In Buyology, Martin Lindstrom presents the astonishing findings from his groundbreaking three-year, seven-million-dollar neuromarketing study—a cutting-edge experiment that peered inside the brains of 2,000 volunteers from all around the world as they encountered various ads, logos, commercials, brands, and products. His startling results shatter much of what we have long believed about what captures our interest—and drives us to buy. Among the questions he explores: • Does sex actually sell? • Does subliminal advertising still surround us? • Can “cool” brands trigger our mating instincts? • Can our other senses—smell, touch, and sound—be aroused when we see a product? Buyology is a fascinating and shocking journey into the mind of today's consumer that will captivate anyone who's been seduced—or turned off—by marketers' relentless attempts to win our loyalty, our money, and our minds.
Download or read book Alewife and Blueback Herring written by Earl L. Bozeman and published by . This book was released on 1989 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Photographic Atlas of Fish Otoliths of the Northwest Atlantic Ocean written by Steven E. Campana and published by NRC Research Press. This book was released on 2004 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This photographic atlas presents light and (or) scanning electron micrographs of 580 pairs of sagittal otoliths representing 288 species, 97 families, and 27 orders of fish from the northwest Atlantic. For most species, multiple individuals across a range of sizes are presented in order to highlight changes in otolith shape with increased size. For 72 of the families, photographs of the lapillar and asteriscal otoliths are also presented.
Download or read book Ken Schultz s Field Guide to Saltwater Fish written by Ken Schultz and published by For Dummies. This book was released on 2003-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive field guide to North American saltwater fish-from the absolute authority on sportfishing Before you head out to the open seas, listen up: Your tackle box is not complete without Ken Schultz's Field Guide to Saltwater Fish! Written by one of the foremost experts in sportfishing, this colorful reference provides anglers and fish enthusiasts of all levels an easy-to-use, indispensable guide to help you identify and learn about the most common species found off the North American coastlines-from albacore to yellowtail. Based on the award-winning reference book Ken Schultz's Fishing Encyclopedia, this handy field guide compresses the essence of its bestselling predecessor into a more manageable, compact size. Arranged alphabetically by species, each entry covers the identification, size/age, distribution, habitat, life history/behavior, and feeding habits of each fish. This fully illustrated, full-color guide makes it easy to identify what's at the end of your line. You'll learn how to distinguish an Atlantic mackerel from a Spanish mackerel, for instance; why you might mistake a cobia for a shark or a remora; how the red grouper's saddle spot will help you tell it apart from a Nassau grouper; and so much more. Written for the 16 million people who enjoy saltwater fishing, Ken Schultz's Field Guide to Saltwater Fish features: 227 of the most common saltwater fish Large, full-color illustrations to help you identify your catch Approachable organization in a compact, take-along size A comprehensive glossary that explains the terms used in the species profiles Overview and anatomy sections written in layman's terms Ken Schultz's Field Guide to Saltwater Fish is a must-have for any fan of America's favorite pastime: fishing!
