Download or read book An Evaluation of Sympatric Populations of Brown and Brook Trout in Four Virginia Streams written by William E. Neal and published by . This book was released on 1985 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Brook Trout Salvelinus Fontinalis written by Michael Isel (III.) and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Approximately 100 brook trout were transplanted into each of four Virginia streams in September 2008. Garth Run and Kinsey Run were re-introductions, and Wildcat Hollow and Sweet Run were new introductions. Single pass electrofishing (EF) surveys were conducted with a backpack electrofisher five times during the study. Selected trout> 70 mm but 100 mm and all trout 100 mm received a Biomark® 134.2 kHz passive integrated transponder (PIT) tag to identify individual fish upon recapture. Trout were present in all streams almost three years post introductions. Catches decreased across the first four surveys. Young of year catch rates severely decreased from June 2009 (n = 77) to June 2010 (n = 7). Adult refuge under low flow conditions and environmental factors such as elevated stream temperatures and drought were determined to be potential limiting factors of brook trout success. Future monitoring is needed to further assess the populations.
Download or read book A Comparison of Life Histories of Brook Trout in Allopatric and Sympatric Populations in a Western North Carolina Stream written by Richard Scott Urwick and published by . This book was released on 1986 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of Brook Trout Populations and Habitat Parameters Between Eastern Kentucky Stocked Streams and Native Virginia Streams written by Grayson Richard Patton and published by . This book was released on 2010 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1968, the United States Fish and Wildlife Service stocked two streams, located in Wolfe County, Kentucky with brook trout (Salvelinus fontinalis) with hopes of establishing naturally reproducing populations. Shortly thereafter, four other brook trout populations were established. Very little is known about these populations and some biologists are skeptical to their contemporary existence. This study assessed Kentucky's introduced brook trout to determine their present day distribution and abundance, and then determined how each stream and population compares to two reference streams with native populations of brook trout located in Grayson County, Virginia. Brook trout were captured at each stream using a backpack electrofisher, and total lengths and weights were measured. Water temperature was collected using data loggers placed in each stream and riparian canopy cover was estimated using a vertical densiometer. In addition, air temperature and rainfall data were gathered from local weather stations. Brook trout were located in three out of five surveyed Kentucky streams, including young-of-the-year individuals, which provided evidence for natural reproduction. Virginia reference streams tended to have higher abundances (VA Catch per unit effort (CPUE) 38 and 41 brook trout/hour; KY CPUE's 6, 19 and 12 brook trout/hour) and relative weights (F=5.1316, P
Download or read book Assessing Populations of Eastern Brook Trout Salvelinus Fontinalis Above and Below Waterfalls in Mountain Streams of Virginia written by and published by . This book was released on 2019 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anthropogenically driven factors, such as increasing temperature and sediment in valley streams, acidification of mountain streams, and the introduction of non-native trout, are restricting habitat suitable for healthy populations of eastern brook trout (Salvelinus fontinalis) throughout their native Appalachian range. Brook trout are important as predators of insects in mountain streams and as a favorite of anglers. It is crucial that remaining populations in sustainable habitats be identified and preserved. Waterfalls are geologic knickpoints preventing base-level lowering that create unique, stable landscapes above them, which may alleviate the temperature-productivity/acidity "habitat squeeze" for populations of brook trout and could serve as potentially ideal targets for conservation efforts despite being isolated. This study investigates brook trout occurrence above waterfalls in Virginia and compares brook trout populations found above waterfalls to those below them. One-hundred meter reaches above and below seven waterfalls in Virginia's George Washington and Jefferson National Forest were sampled for brook trout via 3-pass, block-netted, backpack electrofishing depletions. All brook trout were counted, weighed, and measured for fork length. The response variables are differences in 1) percent dominance, 2) population size, 3) biomass, and 4) length-weight index (Fulton's Condition Factor) between brook trout above and below waterfalls. Brook trout dominance (100 vs. 36.9%) is greater above than below waterfalls, but not significantly (p = 0.1003). We found abundance (26 vs.12 individuals per 100m) and overall biomass (885.3 vs 284.6 grams per 100m) of brook trout populations above waterfalls to be significantly greater than their below waterfall counterparts (p = 0.078 for both). We also found brook trout above waterfalls to have a higher condition factor (1.086g/cm3 vs 1.0636g/cm3) than those below waterfalls (p = 0.031). Lastly, we found populations above waterfalls where their occurrence was previously unknown. Despite being isolated, brook trout populations above waterfalls were just as if not more robust than those below and may be excellent targets for conservation.
Download or read book Sport Fishery Abstracts written by and published by . This book was released on 1976 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fish Culture in Fisheries Management written by Richard H. Stroud and published by Fish Culture Section and Fisheries Management Section of Ame. This book was released on 1986 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stocking warm-water species to restore or enhance fisheries; 2) Stocking cool-water species to meet management needs; 3) Informational needs to improve stocking as a cold-water fisheries management tool; 4) Stocking anadromous species to restore or enhance fisheries; 5) Stocking to restore or enhance marine fisheries; 6) Coping with future shock: matching predator stocking programs to prey abundance; 7) Evaluation of hatchery reared lake trout for reestablishment of populations in the Apostle Islands region of Lake Superior, 1960-84; 8) Considerations in reprogramming hatchery production to improve harvest management: a case study in the Pacific Northwest; 9) Mariculture and fisheries management - a future cooperative approach; 10) Hatcheries and wild trout management; 11) Stocking criteria and goals for restoration and enhancement of warm-water and cool-water fisheries; 12) Stocking goals and criteria for restoration and enhancement of cold-water fisheries; 13) Use of cultured striped bass in restoration and enhancement programs; 14) Sustaining optimum population size through stocking; 15) A model for selecting harvest fraction for aggregate populations of hatchery and wild anadromous salmonids; 16) Management problems with recycling of adult summer steelhead trout at Foster Reservoir, Oregon; 17) Latitudinal influences upon largemouth bass and bluegill interactions in small impoundments; 18) Trout broodstocks used in management of national fisheries; 19) Improving strains and species genetically for higher production, faster growth, and increased survival; 20) Engineering advances related to new production capabilities; 21) Physical and biological factors influencing growth and survival of stocked fish; 22) Role of private industry in increasing production capabilities; 23) Marine finfish culture in Texas: a model for the future; 24) Impact of an artificial spawning operation on the walleye population of Escanaba Lake, Wisconsin; 25) The role of hatcheries in the management and recovery of threatened and endangered fishes; 26) Net-pen aquaculture in Bull Shoals Reservoir; 27) Strategies for evaluating fresh-water stocking programs: past practices and future needs; 28) Important parameters for assessing anadromous fish stocking programs; 29) Techniques for identification and conservation of fish stocks; 30) Impacts of hatchery stocks on wild fish populations; 31) Management considerations in the stocking of diseased or carrier fish; 32) Economic benefits and costs associated with stocking fish; 33) Requirements for integrating natural and artificial production of anadromous salmonids in the Pacific Northwest; 34) Use of yearling largemouth bass for initial stocking of small impoundments; 35) Post-stocking survival of walleye fingerlings in Canadarago Lake, New York; 36) Parameters for assessing Hudson River striped bass stocking; 37) Exotic fishes in North American fisheries management; 38) The Frankenstein Effect: impact of introduced fishes on.
Download or read book Journal of Ichthyology written by and published by . This book was released on 1984 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Otolith Microstructure Examination and Analysis written by David K. Stevenson and published by McClain Printing Company. This book was released on 1992 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of otolith microstructure research has experienced phenomenal growth since the early 1970s and now forms the basis for hundreds of studies in early life history, age, growth, recruitment, migration, mortality and stock structure. This book represents the first effort to compile and summarize the many techniques and procedures associated with studies of otolith microstructure. The complete sequence of events, from sample collection to data analysis, is covered comprehensively, so as to be applicable to most species and situations. The various chapters include both published and unpublished procedures.
Download or read book Field Guide to Freshwater Fishes of Virginia written by Paul E. Bugas Jr. and published by Johns Hopkins University Press. This book was released on 2019-09-24 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A beautifully illustrated guide to the diverse and numerous freshwater fish species in Virginia. In Field Guide to Freshwater Fishes of Virginia, the foremost experts on Commonwealth fishes bring their decades of field experience to readers, offering a complete reference to the fishes of the entire state of Virginia. Gathering information that until now could only be found scattered across numerous reference works and online databases, this book provides everything you need to know to identify fish families and species in the Virginia region. Covering how to collect, handle, observe, conserve, and protect these unique fishes, the book's key features include • more than 175 vibrant, full-color illustrations, set side by side with descriptions of each fish • helpful line drawings that depict the most reliable diagnostic characteristics for field identifications (e.g., snout shape, pigment patterns, mouth morphology) • descriptions of Virginia's freshwater habitats • examples of incredible fish spawning and feeding behavior • tips on observing fish in the wild and in captivity • a chapter on the taxonomy of family and common names of the fish species most common throughout Virginia • up-to-date fish distribution maps • a complete glossary of terms Providing a fascinating foray into the wonders of the Commonwealth's swimmers, Field Guide to Freshwater Fishes of Virginia will appeal to scientists, naturalists, teachers, native fish aquarists, students, anglers, and fish collectors.
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2013 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Production of Juvenile Atlantic Salmon Salmo Salar in Natural Waters written by National Research Council Canada and published by NRC Research Press. This book was released on 1993 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Up-to-date information, knowledge and research in progress in scientific fields related to natural production of juvenile Atlantic salmon and some other ecologically similar fluvial salmonids is contained in the 25 papers and 12 abstracts contained in this publication, which were prepared for an international symposium held in St. John's, Newfoundland. Studies relate to stream ecology, invertebrates and predators, habitat improvement, competitive effects, behaviour and dispersal, habitat and production of juvenile salmon, population dynamics and relationships of juvenile salmon estimates to smolt yields. A list of participants at the conference is also provided.
Download or read book Wild Trout and Planted Trout written by and published by . This book was released on 1994 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brown Trout written by Javier Lobón-Cerviá and published by John Wiley & Sons. This book was released on 2017-12-18 with total page 821 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brown Trout: Biology, Ecology and Management A comprehensive guide to the most current research, history, genetics and ecology of the brown trout including challenging environmental problems The brown trout is an iconic species across its natural European distribution and has been introduced throughout the World. Brown Trout offers a comprehensive review of the scientific information and current research on this major fish species. While the brown trout is the most sought species by anglers, its introduction to various waters around the world is causing serious environmental problems. At the same time, introduction of exogenous brown trout lineages threats conservation of native gene pools of populations in many regions. The authors summarize the important aspects of the brown trout’s life history and ecology and focus on the impact caused by the species. The text explores potential management strategies in order to maintain numerous damaged populations within its natural distributional range and to ameliorate its impacts in exotic environments. The authors include information on a wide-range of topics such as recent updates in population genetics, evolutionary history, reproductive traits and early ontogeny, life history plasticity in anadromous brown trout and life history of the adfluvial brown trout and much more. This vital resource: Contains the latest research on the biology and ecology of brown trout Includes information on phylogeography, genetics, population dynamics and stock management Spotlights the brown trout’s introduction to regions around the world and the serious environmental impacts Offers a comprehensive review of conservation and management techniques Written for salmonid scientists and researchers, fishery and environmental managers, and students of population genetics, ecology and population dynamics, Brown Trout explores the most recent findings on the history, ecology and sustainability of this much-researched species.
Download or read book Ecology Abstracts written by and published by . This book was released on 1999 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.
Download or read book Current References in Fish Research written by and published by . This book was released on 1988 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diadromy in Fishes written by Robert Montgomery McDowall and published by Timber Press (OR). This book was released on 1988 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the fish which exhibit diadromy, their life history strategies and the implications for fisheries. The book should therefore represent an important volume for workers in fish biology, animal physiology and behaviour, and fisheries.
