Download or read book Conservation Genetics and Metapopulation Structure of Book 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 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 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 Demographic and Habitat Requirements for Conservation of Bull Trout written by Bruce E. Rieman and published by . This book was released on 1993 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Understanding Complexity and Variability in Migratory Systems Using Brook Trout in Lake Superior written by Melissa M. Robillard and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigating the Conservation Genetics Small Population Paradigm Using the Brook Trout Salvelinus Fontinalis written by Jacquelyn L. A. Wood and published by . This book was released on 2014 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conservation genetics small population paradigm predicts reduced quantitative genetic variation and consequently, adaptive potential, for populations which have become small and isolated due to habitat fragmentation. While these expectations are supported by laboratory studies, their generality in wild populations remain unresolved. In actuality, the evolutionary consequences of fragmentation may depend on whether environmental characteristics– and by extension, selective regimes are (1) shifted in a consistent directional manner as is widely assumed (Directional hypothesis), or (2) become more variable as population and fragment size decrease (Variable hypothesis); this latter possibility has so far received little empirical attention. Implementing field techniques, I explore these two competing hypotheses by relating variability in habitat characteristics to population size in a series of differentially abundant brook trout (Salvelinus fontinalis) populations located at Cape Race, Newfoundland. I furthermore use these hypotheses as a foundation to test the assumptions of the conservation genetic small population paradigm by investigating the relationships of population size at Cape Race to additive genetic variation (VA), trait differentiation (QST), and phenotypic plasticity in common garden analyses, and to the extent of natural selection in a meta-analysis using a large number of natural populations and species. Across two years and in relation to two population size metrics, patterns of habitat characteristics among small versus large Cape Race populations supported the Variable hypothesis. However, small brook trout populations did not significantly differ from large populations in either the magnitude or variability of VA, QST, or phenotypic plasticity. Results of the meta-analysis similarly revealed little support for differences in the strength, direction, and form of selection among wild populations differing in population size. The lack of differences might be explained by long term fluctuating environmental conditions which resulted in fluctuating selective pressures and similar outcomes among small compared to large Cape Race populations, and among the species included in the meta-analysis. Overall, the results of this research contradict the assumption that small populations generally inhabit marginal environments and also dispute the major tenets of the conservation genetics small population paradigm. Taken together, they suggest that even very small populations of some species may retain the adaptive potential necessary to cope with future environmental change.

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 Population Structure and Conservation of Bull Trout in the East Fork Bitterroot River Drainage Montana written by Leslie Grace Nyce and published by . This book was released on 2011 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bull trout Salvelinus confluentus are a species of conservation interest and are currently listed as threatened by the U.S. Fish and Wildlife Service. Understanding and conserving the genetic and life history diversity of bull trout populations across their range is critical as conservation, management, and recovery plans are developed. Numerous studies in different regions have shown that local bull trout populations in close geographic proximity are typically very genetically different and evidence for dispersal among neighboring tributary populations is weak. In addition to genetic diversity, maintenance of life history diversity may increase resilience of bull trout populations. The larger migratory forms have been linked to high reproductive potential and increased population persistence in unstable environments as the distribution of adults across multiple habitats may buffer them against stochastic events. Ensuring the persistence of both genetic and life history diversity are important conservation priorities. I evaluated the genetic population structure of bull trout in the East Fork Bitterroot River, Montana and identified which tributaries produced the majority of fluvial fish using genetic assignment. My data showed that populations in tributaries are genetically distinct from each other and fish in the main stem East Fork; however, dispersal of individuals among populations was apparent suggesting a metapopulation structure. My results indicate that the scale of management for bull trout in the East Fork is the basin and that migratory fish may be important for maintaining gene flow among small populations and genetic variation within them. Given the importance of migratory fish, I examined how well we are tracking migratory bull trout populations and threats to their existence. The evaluation of the current monitoring protocol revealed that redd count surveys are not useful. Even though mark-recapture surveys are common, there are few locations where population estimates are obtained. Improving the protocols and combining approaches may improve our inference, specifically, conducting redd counts and electrofishing population estimates in areas identified as supporting migratory fish. In general, threats such as roads, grazing allotments, and wildfire have been well tracked, although future threats to river habitat conditions (e.g., temperature and degradation) and invasions of brown trout are yet to be fully evaluated.

Download or read book Microsatellite based Genetic Monitoring in Lake Superior Brook Trout Salvelinus Fontinalis Hatchery Strains written by Anne Cooper and published by . This book was released on 2004 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Survival and Growth of Matched Plantings of Lake Trout Salvelinus Namaycush Brook Trout Salvelinus Fontinalis and Lake X Brook F1 Splake Hybrids and Backcrosses in Northeastern Ontario Lakes written by Peter E. Ihssen and published by . This book was released on 1982 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Emergence and Survival of Lake Trout Salvelinus Namaycush and Brook Trout S Fontinalis from Artificial Substrates in an Acid Lake written by J. M. (John Maxwell) Gunn and published by . This book was released on 1981 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Diversity and Population Structure of Brook Trout Salvelinus Fontinalis in a Remote Adirondack Watershed written by Spencer Bruce and published by . This book was released on 2014 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Survival and Growth of Matched Plantings of Lake Trout Salvelinus Namaycush Brook Trout Salvelinus Fontinalis and Lake X Brook F 1 Splake Hybrids and Backcrosses in Northeastern Ontario Lakes written by Peter E. Ihssen and published by . This book was released on 1982 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessing Population Genetic Structure and Hatchery Introgression in Eastern Book Trout Salvelinus Fontinalis in the Beebe River Watershed written by Jared B. Lamy and published by . This book was released on 2020 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental and Genetic Factors Affecting the Physiology and Ecology of Lake Trout written by and published by . This book was released on 1990 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report examines the role of genetics, feeding ecology, habitat and spawning behaviour in the management of lake trout. Evidence for genetic difference and environmental effects among both native and hatchery stocks of lake trout are also discussed.

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 Understanding Phenotypic and Genetic Variation in Behaviours Linked to Migration in Lake Superior Brook Trout written by Nicole Wajmer and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: I investigated the relationship between personality and migration in Lake Superior Brook Trout (Salvelinus fontinalis) known to display migratory polymorphisms: a small bodied stream resident, and a larger bodied migrant. Resident and migrant Brook Trout were captured and crossed to create 26 families. Five personality metrics were quantified for offspring and tested for (i) repeatability and heritability, (ii) phenotypic and genetic correlations, and (iii) relationships with the migratory behaviour of their parents. Assays of risk-taking, general activity, social behaviour, and propensity to disperse were conducted for the 0+, 1+, and 2+ age classes. Personality metrics were repeatable and heritable across age classes. I found evidence for a behaviour syndrome involving risk-taking, activity, and propensity to disperse. However, the personality of the offspring was not related to the migratory status of their parents at any age, suggesting that personality and migratory behaviour are not controlled by a simple, proximate mechanism.