Download or read book An Evaluation of the Lower Ohio River Channel Blue and Flathead Catfish Fishery written by Devon C. Oliver and published by . This book was released on 2021 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2015, Illinois changed size and harvest limits for catfishes (blue catfish Ictalurus furcatus, flathead catfish Pylodictis olivaris, and channel catfish Ictalurus punctatus) in the Ohio River to match those of neighboring states in order to provide continuity of the regulations and promote a trophy catfish fishery. Regulations imposed a daily limit of one blue catfish or flathead catfish ≥ 35 inches (88.9 cm) and one channel catfish ≥ 28 inches (71.1 cm) per fisher and a 13 inch (33.0 cm) minimum length limit for all species with no bag limit. Although management regulations were implemented, potential efficacy of the implemented regulations and appropriate (i.e. most precise or accurate with fewest samples) monitoring protocols were unknown. Furthermore, there was general lack of understanding of early life movements, natal dispersal timing and principal recruitment sources that aide in determining appropriate spatial scale for monitoring and managing lower Ohio River catfish stocks. To fill these knowledge gaps the following methods were employed: 1) simulation modeling was used to evaluate precision in estimating catch and size distribution metrics for monitoring population trends with increasing sample size (i.e., sampling events), 2) N-mixture modeling was used to estimate size selectivity of multiple gears using detection probability as a robust alternative to size-specific catchability coefficients, 3) otolith microchemistry (Sr:Ca and Ba:Ca) was employed to determine principal recruitment sources, early life movement patterns, and provide fisheries managers with a better understanding of the spatial extent to which management actions should be implemented, 4) Bayesian modeling was used to estimate growth and mortality, 5) Yield-per-recruit modeling was used to estimate and evaluate fishing mortality rates that would result in growth overfishing (FMAX) and yield at FMAX (YPRMAX) for three management scenarios (no regulation, minimum length limit [33.0 cm or greater] and a permissive slot limit [33.0 cm-88.9 cm; blue catfish and flathead catfish]). The simulation models presented account for the uncertainty associated with heterogeneous selectivity of a gear, and minimize the impact of rare or extreme catch values. Trotlines and low pulse (15-pps) electrofishing generally required the fewer samples to achieve stable values of catch per unit of effort (CPUE), proportional size distribution (quality; PSDQ), and coefficient of variation (CV) than other gears based on simulation modeling. Abundance and detection probabilities were estimated separately for each species of catfish by length category within and across gears, producing a species-gear-size correction for catch bias used in estimating Proportional Size Distribution-Quality (PSDQ). Corrected (i.e., accounting for detection) PSDQ values were lower than uncorrected estimates suggesting a positive bias for larger fish across the entire sampling regime. Managers should use a combination of low pulse electrofishing, trotlines, and high pulse (60-pps) electrofishing in their monitoring efforts for all three species. Based on microchemistry, ictalurid catfishes in the lower Ohio River appear to recruit from multiple sources and make movements across a broad geographic scale. Additionally, some catfish may be originating from outside the portion of the Ohio River that is managed by Illinois (lower 214 km). Fisheries managers should take this into account when implementing management actions. However, most ictalurid catfishes originated from riverine (e.g., Ohio and Mississippi River) natal environments and not from smaller tributaries, and managers should not expect tributaries to compensate for weak year-classes within the river. Based on yield per recruit modeling, catfish stocks are unlikely to benefit from current regulations or a theoretical minimum size limit given the near complete overlap of YPRMAX confidence intervals for all estimable scenarios and the small statistical difference (1-3%) based on FMAX between the most permissive and most restrictive scenarios. While statistical differences in FMAX exist, they are likely biologically irrelevant, exceeding the precision of estimation methods for F. While there is some indication that alignment and continuity of management regulations is warranted based on microchemistry, the efficacy of the current permissive slot regulations is questionable based on the models presented and the life history of these fishes. There is no advantage to implementing any of the modeled regulations in terms of increasing FMAX or YPRMAX.
Download or read book Flatheads and Spooneys written by Jens Lund and published by University Press of Kentucky. This book was released on 2021-10-21 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the early 1800s, people have made a living fishing and harvesting mussels in the lower Ohio Valley. These river folk are conscious of an occupational and social identity separate from those who earn their living from the land. Sustained by a shared love of the river, deriving joy from the beauty of their chosen environment, and feeling great pride in their ability to subsist on its wild resources and to master the skills required to make a living from it, many still identify with the nomadic houseboat-dwelling subculture that flourished on the river from the early nineteenth century to the 1950s. Today's community of fisherfolk is small and economically marginal, but their activities sustain a complex set of traditional skills and a body of verbal folklore associated with river life. In Flatheads and Spoonies, Jens Lund describes the activities, boats, gear, verbal lore, and sense of identity of the fisher folk of the lower Ohio River Valley and provides historical and ethnobiological background for their way of life. Lund connects the importance of river fish in the diet of inhabitants of the valley to local fishing activities and explores the relationship between river people and those whose culture is primarily land-based, painting a colorful portrait of river fishing and river life. This book offers a look—historical and ethnographic—at a little-known aspect of traditional life in the American Midwest, still surviving today despite immense changes in environment, resources, and economic base.
Download or read book Growth of Blue Catfish Channel Catfish and Flathead Catfish Relative to Latitude and Physical Characteristics of the Lower Mississippi River written by Robert Murrah Mayo and published by . This book was released on 1999 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth of Blue Channel and Flathead Catfish in Selected Habitats of the Lower Mississippi River written by Danny C. Lee and published by . This book was released on 1983 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Biological Characteristics of a Channel Catfish Population in the Lower Des Moines River with an Evaluation of Potential Commercial Harvest written by James Mayhew and published by . This book was released on 1972 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reproductive Biology and Early Life History of Fishes in the Ohio River Drainage written by Thomas P. Simon and published by CRC Press. This book was released on 2003-12-29 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series fills immense gaps in knowledge of issues related to early life development of fishes in the Ohio basin. Volume I includes familes Acipenseridae to Esocidae, Volume II includes the Catostomidae, while Volume III addresses the developmental and morphological issues of catfish and madtoms. This volume describes the characteristics of the
Download or read book Fisheries Review written by and published by . This book was released on 1995 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Hoosier Shawnee ecological assessment written by and published by . This book was released on 2004 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A review of major river basins and large lakes relevant to inland fisheries written by Ainsworth, R., Cowx, I.G., Funge-Smith, S.J. and published by Food & Agriculture Org.. This book was released on 2021-01-21 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: This review presents summary information on 45 river and great lake basins of the world, which support inland fisheries. The information presented is drawn from published information in peer-reviewed journals as well as grey literature. Each basin summary is presented in a common format, covering the description of the fishery, estimates of catch and numbers of people engaged in the fishery, important biodiversity features and threats to the fishery. An analysis of the replacement costs of inland fish of the basin is also presented. This is expressed in terms of the water, land and greenhouse gas footprint that would arise if the inland fish that are currently produced had to be replaced with other forms of food (such as aquaculture fish, livestock or field crops).
Download or read book Fisheries Bulletin of the Kentucky Department of Fish and Wildlife Resources written by and published by . This book was released on 1995 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report NC written by and published by . This book was released on 1981 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics and Growth of Commercially Exploited Catfish Populations in the Lower Missouri River written by Daniel "V." Ragland and published by . This book was released on 1972 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report written by Ohio River Valley Water Sanitation Commission and published by . This book was released on 1959 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Freshwater Fishes of North America written by Melvin L. Warren, Jr. and published by Johns Hopkins University Press. This book was released on 2020-07-14 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt: H. Wilson
Download or read book Catfish 2000 written by Elise R. Irwin and published by . This book was released on 1999 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fisheries Bulletin of the Kentucky Department of Fish and Wildlife Resources written by Kentucky. Dept. of Fish and Wildlife Resources and published by . This book was released on 1995 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishes of Arkansas written by Henry W. Robison and published by . This book was released on 2020-03-11 with total page 995 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Fishes of Arkansas, in development for more than a decade, is an extensive revision and expansion of the first edition, including reclassifications, taxonomic changes, and descriptions of more than thirty new species. An invaluable reference for anyone interested in the state's fish population--from professional ichthyologists, fisheries biologists, and managers of aquatic resources, to amateur naturalists and anglers--this new edition provides updated taxonomic keys as well as detailed descriptions, photographs, and line drawings to aid identification of the state's 241 fish species. There is also much information on the distribution and biology of each species, including descriptions of habitat, foods eaten, reproductive biology, and conservation status. This project and the preparation of this publication was funded in part by a grant from the Arkansas Game and Fish Commission.
