Download or read book Among Headwaters Conservation Genetics of Brook Trout written by Jason Vokoun and published by . This book was released on 2015 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Project to collect information about population fragmentation and gene flow among headwater brook trout populations in Connecticut.
Download or read book Brook Trout Populations in Headwater Stream Networks written by Yoichiro Kanno and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conservation Genetics of Brook Trout salvelimus Fontinalis in Shenandoah National Park written by Alicia Gail Nelson and published by . This book was released on 2009 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conservation Applications of Watershed Level Brook Trout Riverscape Genetics written by Lucas Nathan and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Contemporary Brook Trout Salvelinus fontinalis populations are often fragmented due to anthropogenic influences. Although research and conservation actions have traditionally focused at the stream-reach level, inter-stream movements may connect seemingly isolated populations to form larger metapopulations. The overall goal of my research was to use watershed-level riverscape genetics to inform Brook Trout conservation. Specifically, my objectives were to 1) present a synthesis of existing Brook Trout literature and identify future research directions, 2) evaluate Brook Trout genetic population structuring and identify gene flow barriers at the watershed level, 3) validate and modify a pre-existing Brook Trout habitat patch spatial layer that can be used to predict extant Brook Trout metapopulations, and 4) develop decision support tools to identify Brook Trout conservation opportunity areas (COAs) at watershed levels. Using empirical data, I found evidence of genetic connectivity among streams spanning 5 - 15 km of mainstem habitat. Watersheds with high levels of development were associated with increased differentiation, suggesting that development acts a barrier to gene flow at the watershed level. The pre-existing patch layer adequately predicted many genetic metapopulations, however patches with dams or high levels of development often exhibited higher levels of genetic structuring. Modifying the patches reduced evidence of genetic structuring, which suggested a better representation of existing genetic patterns. Using the set of COA tools, I identified patches and watersheds across Connecticut to target for specific conservation actions. Simulating barrier removals, I found rapid (1 - 10 years) increases in genetic diversity, however barrier severity and monitoring location strongly influenced the observed effects. Through this research, I have demonstrated that Brook Trout, despite being isolated by unsuitable mainstem habitat, exist in metapopulations at the watershed level. Such dynamics are important for long term population viability, and thus conservation actions should take watershed-level processes into consideration. Using the modified patch layer and the set of COA tools I developed as part of this research, resource managers can visualize and identify areas across broad landscapes to target for Brook Trout conservation. Doing so will promote the long-term resilience and adaptive potential of Brook Trout metapopulations.
Download or read book CONSERVATION GENETICS OF SOUTHERN APPALACHIAN BROOK TROUT Salvelinus Fontinalis written by Thomas Casey Weathers and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Many range-restricted species, particularly mountaintop species, are often the first groups in which entire species experience extinction due to range contractions and perturbations. Rear-edge, lower latitude, salmonid populations often occupy fragmented habitats and may in turn exhibit more pronounced signatures of isolation than higher latitude conspecifics. Therefore, rear-edge populations present significant conservation challenges to biologists interested in identifying and maintaining ecological and evolutionary processes within and among such populations. Brook Trout (Salvelinus fontinalis), the only endemic salmonid to southern Appalachia, are rich in ecologically and evolutionarily interesting traits such as multiple life history forms, broad latitudinal and elevational distribution, and prodigious neutral genetic differentiation. Causes of continual Brook Trout population and range declines include overharvest, acid precipitation, habitat degradation, competition with non-native species, and climate change. Such declines have led to the increased isolation of many populations of Brook Trout. In the absence of gene flow many isolated populations of Brook Trout may exhibit rapid genetic drift or inbreeding, thus resulting in subsequent losses of adaptive potential. Consequently, there is considerable demand for the implementation of restoration programs that maximize population recovery and resilience of wild Brook Trout. As such, resource managers must plan for an evolutionary future for such a trust species. While the current paradigm of conservation places emphasis on recognition and protection of irreplaceable evolutionarily distinct lineages, the precise and accurate delineation of populations must become a priority. Once populations are identified the best strategy for future conservation may be to enhance connectivity via restoration or translocation efforts rather than protecting specific genotypes. Elucidating spatial clusters of Brook Trout is critical to their conservation, particularly regarding unprecedented environmental change. Therefore, I have combined informative microsatellite data with riverscape genetics approaches to assess whether functional (meta)population assemblages exist among rear-edge populations of Brook Trout sampled across southern Appalachia in the following research chapters. My research elucidates the effects of isolation and fragmentation on Brook Trout genetic and phenotypic (i.e., morphometric and meristic) differentiation, whether neighboring populations exhibit enough gene flow to warrant being considered metapopulations, and the effect of potential barriers to gene flow upon subsequent metapopulation dynamics and genetic diversity. My research largely suggests that rear-edge populations of Brook Trout exhibit extensive neutral genetic differences and appear to be prodigiously isolated. My findings provide biologists a reference when setting management and conservation priorities and may foster more aggressive efforts focused on restoring connectivity among many populations of rear-edge Brook Trout. Further, by demarcating population and subpopulation clusters across riverscapes I provide resource managers information needed to enhance future Brook Trout conservation outcomes.I sought to document existing patterns of genetic variation within and among populations of Brook Trout and then translate my results into an approachable format for managers to access for future management and conservation decision making and to further encourage managers to implement population genetic monitoring programs. My work supports that non-native trout removals combined with habitat restorations could improve connectivity and enhance the outlook for many fragmented populations of wild, native brook trout across southern Appalachia. Moreover, it is my hope that the results from these studies can be used by Brook Trout biologists to select local restoration source stocks used to potentially bolster the effectiveness of different conservation strategies (i.e., founder translocations and genetic rescue).
Download or read book Experimental Test of Genetic Rescue in Isolated Populations of Brook Trout written by Zachary L. Robinson and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Translocations are an important aspect of the management of natural populations in an increasingly fragmented landscape. Maintaining connectivity and gene flow is beneficial for both contemporary fitness and adaptive potential in the face of environmental change. Genetic rescue (GR) can alleviate inbreeding depression, genetic load, and increase adaptive potential of populations. Here, I have translocated 10 (5 of each sex) brook trout (Salvelinus fontinalis) to four geographically proximate and environmentally similar fragmented stream-dwelling populations of brook trout in Virginia to test for genetic rescue. The translocated brook trout contributed to more families than would be expected under neutral introgression, and hybridization resulted consistently in larger full-sibling family sizes. In the cohort immediately following translocation I observed relatively high (>20%) introgression in 3 of the 4 recipient sites, and in one recipient population 57.7 % of the offspring had at least one migrant parent. During the post-translocation period favorable regional climatic conditions resulted in large cohorts across recipient sites and controls, however the percent increase in juvenile abundance scales to initial genetic diversity and patch size. I observe strong evidence of hybrid vigor through consistently larger body sizes of hybrid offspring. At this point I cannot rule out potential negative effects of translocations such as outbreeding depression with out sampling more cohorts following genetic recombination. However, I provide an empirical and replicated foundation to begin assessing the efficacy of GR-motivated translocations for headwater fish conservation, and make a substantial contribution to the growing body of GR-literature.
Download or read book Conservation Genetics of Remnant Anadromous Brook Trout Salvelinus Fontinalis Populations at the Southern Limit of Their Distribution written by Brendan J. Annett and published by . This book was released on 2005 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Brook Trout written by Nick Karas and published by Simon and Schuster. This book was released on 2015-11-03 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: North America has had a 400-year love affair with the brook trout - Salvelinus fontinalis- its great native trout. In this newly revised and updated volume, Nick Karas offers the only major profile of this most beautiful gamefish. Brook Trout is a thorough look at the history, biology, and angling possibilities of the fish most anglers affectionately call the brookie. Through the eyes of a trained ichthyologist, Karas explores the brook trout's biology and the events that led to its evolution and distribution. He unravels the controversies surrounding the two largest brook trout ever taken. But the core of this book is the fishery: its past status, current condition, and future. And because the history of brook trout fishing is inseparable from the history of American fishing, Karas follows the development of the rods, reels, lines, lures and flies that evolved as anglers pursued their fascination with this great game fish. Skyhorse Publishing is proud to publish a broad range of books for fishermen. Our books for anglers include titles that focus on fly fishing, bait fishing, fly-casting, spin casting, deep sea fishing, and surf fishing. Our books offer both practical advice on tackle, techniques, knots, and more, as well as lyrical prose on fishing for bass, trout, salmon, crappie, baitfish, catfish, and more. While not every title we publish becomes a New York Times bestseller or a national bestseller, we are committed to publishing books on subjects that are sometimes overlooked by other publishers and to authors whose work might not otherwise find a home.
Download or read book Genetics and Conservation of Bull Trout written by Naohisa Kanda and published by . This book was released on 1998 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conservation Genetics and Metapopulation Structure of Brook Trout Salvelinus Fontinalis in Nipigon Bay Lake Superior Ontario written by Silvia D'Amelio and published by . This book was released on 2002 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conservatin Genetics of Brook Trout Salvelinus Fontinalis written by Matthew William Jones and published by . This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Diversity of Wild Brook Trout Salvelinus Fontinalist Populations in New Jersey written by Patricia L. Hamilton and published by . This book was released on 2007 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Suitability Index Model for Brook Trout in Streams of the Southern Blue Ridge Province written by Christopher J. Schmitt and published by . This book was released on 1993 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Searching for Home Waters written by Michael K. Steinberg and published by University of Georgia Press. This book was released on 2023-06-15 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: The brook trout (Salvelinus fontinalis) is an iconic species among fly anglers and cold-water conservationists in eastern North America. This fish registers as a powerful symbol for its beauty and its imagery in art and literature. Its presence also tells us a great deal about the health of the larger environment. When an angler has a brook trout in hand, there is confidence that the water is close to pristine. Besides being an important indicator species, the brook trout, with its gold and reddish markings and its camouflaged green and black back, is one of the most beautiful freshwater fish in North America. And beyond the beauty of the fish itself, the environment in which it is found is also part of its past and present appeal. To fish for brook trout is often to fish in the last remote and rugged landscapes in the East, “fishscapes” that have not been polluted by stocking trucks that dump nonnative brown and rainbow trout in most of the East’s accessible cold waterways. Searching for Home Waters is part science, part environmental history, and part personal journey of the author, Michael K. Steinberg, and those he interviewed during his travels. The work takes a broad perspective that examines the status of brook trout in the eastern United States, employing a “landscape” approach. In other words, brook trout do not exist in a vacuum; they are impacted by logging, agriculture, fishing policies, suburban development, mining, air pollution, and climate change. Thus, while the book focuses specifically on the status and management of the brook trout—from Georgia to Labrador—it also tells the larger story of the status of the eastern environment. As a “pilgrimage,” this book is also a journey of the heart and contains Steinberg’s personal reflections on his relationship with the brook trout and its geography.
Download or read book Estimating the Effective Number of Breeders of Brook Trout Salvelinus Fontinalis Over Multiple Generations in Two Stream Systems written by Matthew R. Cembrola and published by . This book was released on 2014 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of genetic markers in monitoring populations has become increasingly important for conservation purposes, and can take many forms. While effective population size (Ne) is of great interest to conservation genetics, it may be much easier and more practical to estimate the effective number of breeders (Nb) per cohort as a tool for genetic monitoring of populations. Few studies have estimated Nb for the same species over long periods of time in comparison with demographic or environmental variables. I estimated Nb of the eastern brook trout, Salvelinus fontinalis, as part of long-term studies of two stream systems: West Brook (WB) in Massachusetts and Stanley Brook (SB) in Maine. I used eight microsatellite loci for all available young of the year (YOY) from each cohort in WB and a random subset of YOY distributed evenly throughout SB to obtain genetic-based estimates. I estimated adult abundance (NC) from mark-recapture data, and used seasonal stream flow as an environmental variable. I performed linear models with Nb as the response variable and family structure (number of families and variance in family size), NC, and seasonal stream flow as predictor variables. I found that both the number of families and variance in family size had a strong influence on Nb. Compared to abundance of adults and YOY, Nb was relatively stable over time.Stream flow in both autumn and spring showed a quadratic relationship with Nb in WB, suggesting that intermediate flows are optimal for maintaining a higher Nb. SB, with fewer years of data, did not show these relationships. If incorporated into monitoring programs, Nb can be a useful tool for detecting changes in population status and for informing management decisions.
Download or read book The Genetics of Native and Stocked Brook Trout Populations in East Tennessee written by Frank Joseph Kriegler and published by . This book was released on 1993 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessing Brook Trout Populations in Headwater Streams of the Adirondack Mountains Using Environmental DNA written by Barry P. Baldigo and published by . This book was released on 2016 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: DNA signatures present in the environment know as Environmental DNA or eDNA can be used to detect the presence of trout without observing the trout.
