Download or read book Phenotypic and Genetic Variation Within and Among Seven Populations six Endangered of Maine Atlantic Salmon Salmo Salar written by Nathan F. Wilke and published by . This book was released on 2006 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Status of Atlantic Salmon in Maine written by National Research Council and published by National Academies Press. This book was released on 2002-03-22 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlantic salmon in Maine, once abundant but now seriously depleted, were listed as endangered under the federal Endangered Species Act (ESA) in November 2000. The listing covers the wild fish in eight Maine rivers as a single "distinct population segment." The controversy in Maine that accompanied the listing led Congress to request the National Research Council's (NRC's) advice on the science relevant to understanding and reversing the declines in Maine's salmon populations. The charge to the NRC's Committee on Atlantic Salmon in Maine included an interim report focusing on the genetic makeup of Maine Atlantic salmon populations. This is the interim report. Understanding the genetic makeup of Maine's salmon is important for recovery efforts, because the degree to which populations in Maine differ from adjacent populations in Canada and the degree to which populations in different Maine rivers and tributaries differ from each other affect the choice of recovery options that are most likely to be effective. This report focuses only on questions of genetic distinctiveness. The committee's final report will address the broader issues, such as the factors that have caused Maine's salmon populations to decline and the options for helping them to recover.
Download or read book Atlantic Salmon in Maine written by National Research Council and published by National Academies Press. This book was released on 2004-10-07 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the pervasive and substantial decline of Atlantic salmon populations in Maine over the past 150 years, and because they are close to extinction, a comprehensive statewide action should be taken now to ensure their survival. The populations of Atlantic salmon have declined drastically, from an estimated half million adult salmon returning to U.S. rivers each year in the early 1800s to perhaps as few as 1,000 in 2001. The report recommends implementing a formalized decision-making approach to establish priorities, evaluate options and coordinate plans for conserving and restoring the salmon.
Download or read book Genetic Status of Atlantic Salmon in Maine written by Committee on Atlantic Salmon in Maine and published by National Academies Press. This book was released on 2002-04-05 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlantic salmon in Maine, once abundant but now seriously depleted, were listed as endangered under the federal Endangered Species Act (ESA) in November 2000. The listing covers the wild fish in eight Maine rivers as a single "distinct population segment." The controversy in Maine that accompanied the listing led Congress to request the National Research Council's (NRC's) advice on the science relevant to understanding and reversing the declines in Maine's salmon populations. The charge to the NRC's Committee on Atlantic Salmon in Maine included an interim report focusing on the genetic makeup of Maine Atlantic salmon populations. This is the interim report. Understanding the genetic makeup of Maine's salmon is important for recovery efforts, because the degree to which populations in Maine differ from adjacent populations in Canada and the degree to which populations in different Maine rivers and tributaries differ from each other affect the choice of recovery options that are most likely to be effective. This report focuses only on questions of genetic distinctiveness. The committee's final report will address the broader issues, such as the factors that have caused Maine's salmon populations to decline and the options for helping them to recover.
Download or read book The Atlantic Salmon written by Eric Verspoor and published by John Wiley & Sons. This book was released on 2007-05-21 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlantic Salmon is a cultural icon throughout its North Atlantic range; it is the focus of probably the World’s highest profile recreational fishery and is the basis for one of the World’s largest aquaculture industries. Despite this, many wild stocks of salmon are in decline and underpinning this is a dearth of information on the nature and extent of population structuring and adaptive population differentiation, and its implications for species conservation. This important new book will go a long way to rectify this situation by providing a thorough review of the genetics of Atlantic salmon. Sponsored by the European Union and the Atlantic Salmon Trust, this book comprises the work of an international team of scientists, carefully integrated and edited to provide a landmark book of vital interest to all those working with Atlantic salmon.
Download or read book Determination of Endangered Status for the Gulf of Maine Distinct Population Segment of Atlantic Salmon Final Rule Us Fish and Wildlife Service Regulation Fws 2018 Edition written by The Law The Law Library and published by Createspace Independent Publishing Platform. This book was released on 2018-10-23 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Determination of Endangered Status for the Gulf of Maine Distinct Population Segment of Atlantic Salmon - Final Rule (US Fish and Wildlife Service Regulation) (FWS) (2018 Edition) The Law Library presents the complete text of the Determination of Endangered Status for the Gulf of Maine Distinct Population Segment of Atlantic Salmon - Final Rule (US Fish and Wildlife Service Regulation) (FWS) (2018 Edition). Updated as of May 29, 2018 We (NMFS and USFWS, collectively referred to as the Services) have determined that naturally spawned and conservation hatchery populations of anadromous Atlantic salmon (Salmo salar) whose freshwater range occurs in the watersheds from the Androscoggin River northward along the Maine coast to the Dennys River, including those that were already listed in November 2000, constitute a distinct population segment (DPS) and hence a "species" for listing. We have determined that the Gulf of Maine (GOM) DPS warrants listing as endangered under the Endangered Species Act (ESA). Critical habitat for the GOM DPS will be designated in a subsequent Federal Register notice. This book contains: - The complete text of the Determination of Endangered Status for the Gulf of Maine Distinct Population Segment of Atlantic Salmon - Final Rule (US Fish and Wildlife Service Regulation) (FWS) (2018 Edition) - A table of contents with the page number of each section
Download or read book Ecology of Atlantic Salmon and Brown Trout written by Bror Jonsson and published by Springer Science & Business Media. This book was released on 2011-05-03 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Destruction of habitat is the major cause for loss of biodiversity including variation in life history and habitat ecology. Each species and population adapts to its environment, adaptations visible in morphology, ecology, behaviour, physiology and genetics. Here, the authors present the population ecology of Atlantic salmon and brown trout and how it is influenced by the environment in terms of growth, migration, spawning and recruitment. Salmonids appeared as freshwater fish some 50 million years ago. Atlantic salmon and brown trout evolved in the Atlantic basin, Atlantic salmon in North America and Europe, brown trout in Europe, Northern Africa and Western Asia. The species live in small streams as well as large rivers, lakes, estuaries, coastal seas and oceans, with brown trout better adapted to small streams and less well adapted to feeding in the ocean than Atlantic salmon. Smolt and adult sizes and longevity are constrained by habitat conditions of populations spawning in small streams. Feeding, wintering and spawning opportunities influence migratory versus resident lifestyles, while the growth rate influences egg size and number, age at maturity, reproductive success and longevity. Further, early experiences influence later performance. For instance, juvenile behaviour influences adult homing, competition for spawning habitat, partner finding and predator avoidance. The abundance of wild Atlantic salmon populations has declined in recent years; climate change and escaped farmed salmon are major threats. The climate influences through changes in temperature and flow, while escaped farmed salmon do so through ecological competition, interbreeding and the spreading of contagious diseases. The authors pinpoint essential problems and offer suggestions as to how they can be reduced. In this context, population enhancement, habitat restoration and management are also discussed. The text closes with a presentation of what the authors view as major scientific challenges in ecological research on these species.
Download or read book Evolutionary Biology of the Atlantic Salmon written by Tomislav Vladić and published by CRC Press. This book was released on 2015-08-10 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlantic salmon (Salmo salar, L) is an anadromous species contributing to major fishery catches and comprising a significant part of the aquaculturally produced fish for human consumption. The aim of this book is to incite the interest in the field of knowledge gathered from a broad scope of disciplines that have investigated this fish species. Und
Download or read book Salmon PVA a Population Viability Analysis Model for Atlantic Salmon in the Maine Distinct Population Segment written by Christopher M. Legault and published by . This book was released on 2004 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A population viability analysis (PVA) model has been developed for Atlantic salmon (Salmo salar) in Maine. This model incorporates uncertainty in juvenile and adult survival rates, direct and indirect linkages among populations in different rivers, and accounts for a number of sources of potential human removals or stocking in a flexible, modular Fortran program named SalmonPVA. The structure of the model is based on a state-space approach with a detailed life history cycle. Multiple cohorts in multiple rivers progress through their life history based on stage-specific survival rates and fecundity, with limits imposed by riverine habitat capacity. The model projects the populations forward in time (usually 100 years) numerous times, with stochastic variables selected based on a Monte Carlo approach to calculate the probability of extinction. This model is being developed with input from scientists and policy makers from NOAA Fisheries, US Fish and Wildlife Service, Atlantic Salmon Commission, and the University of Maine. Results from this model will form the basis for informing the selection of delisting criteria in the Recovery Plan for the Maine Distinct Population Segment, which was listed as endangered in 1999"--Executive summary.
Download or read book Within and Among Population Genetic Variation in Eastern Cape Breton Atlantic Salmon and the Prioritization of Populations for Conservation Salmo Salar L written by Patrick O'Reilly and published by . This book was released on 2013 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: East Cape Breton (ECB) Atlantic salmon include those that, as juveniles, inhabit streams and rivers that drain into Atlantic waters along the northeast, southeast, and south coasts of Cape Breton Island, as well as those inhabiting streams and rivers that empty into the Bras d'Or Lakes. Genetic variation is surveyed at a large number of nuclear microsatellite loci (15) across 798 individuals obtained from 13 rivers, including seven from ECB, two from nearby rivers on the West Coast of Cape Breton (WCCB) in the neighbouring Gaspé-Southern Gulf of St. Lawrence (GSG) DU, one from a nearby river in the neighboring Southern Upland (SU) DU, and three more distant locations that vary in size and levels of within-population genetic variation. The objectives of these analyses are (1) to report and interpret levels of within-population genetic variation in ECB populations surveyed, (2) to quantify the extent and pattern of present-day among-population genetic structuring within the ECB DU, and (3) to prioritize populations for conservation measures based on 1 and 2 above.--Document.
Download or read book Atlantic Salmon Ecology written by Øystein Aas and published by John Wiley & Sons. This book was released on 2011-07-05 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Atlantic salmon is one of the most prized and exploited species worldwide, being at the centre of a massive sports fishing industry and increasingly as the major farmed species in many countries worldwide. Atlantic Salmon Ecology is a landmark publication, both scientifically important and visually attractive. Comprehensively covering all major aspects of the relationship of the Atlantic salmon with its environment, chapters include details of migration and dispersal, reproduction, habitat requirements, feeding, growth rates, competition, predation, parasitsm, population dynamics, effects of landscape use, hydro power development, climate change, and exploitation. The book closes with a summary and look at possible future research directions. Backed by the Norwegian Research Council and with editors and contributors widely known and respected, Atlantic Salmon Ecology is an essential purchase for all those working with this species, including fisheries scientists and managers, fish biologists, ecologists, physiologists, environmental biologists and aquatic scientists, fish and wildlife department personnel and regulatory bodies. Libraries in all universities and research establishments where these subjects are studied and taught should have copies of this important publication. Comprehensive and up-to-date coverage of Atlantic Salmon Atlantic Salmon is one of the world's most commercially important species Backed by the Norwegian Research Council Experienced editor and internationally respected contributors
Download or read book Morphological Variation and Genetic Differentiation in Wild and Domestic Atlantic Salmon from Southern Newfoundland written by Benjamin Perriman and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive divergence is an important force structuring wild populations and directly influencing species persistence and stability. Wild Atlantic Salmon (Salmo salar) have declined across their native range in recent decades with genetic interactions with salmon aquaculture identified as a contributing cause. Improved understanding the nature of diversity in wild populations and the potential impact of interbreeding with domestic escapees is critical to conservation and management of wild Atlantic Salmon. Body shape of juvenile Atlantic Salmon in the wild may be considered adaptive and is often found to be associated with environmental and watershed conditions, or even with culture conditions in the case of domestic conspecifics. In this thesis I quantify the importance of body shape on population structuring in the wild, and then explore the impact of wilddomestic hybridization on shape of juvenile Atlantic Salmon. Geometric morphometrics were used to quantify and allow for statistical testing of variation in body shape. Geometric morphometric data were first combined with a large panel of sequenced microsatellite loci to understand the relationship between shape and population structure; and second used in conjunction with a SNP panel designed for wild-domestic hybrid identification to explore shape differences among cross types. My results suggest that variation in body shape is important to the structuring of wild populations, but that variation in climate was also significant in genetic structuring. Interestingly, shape differences between wild, domestic, and hybrids were minimal, likely reflecting both selection and phenotypic plasticity in the wild. My results suggest that phenotypic variation in body shape may be an important component of adaptive diversity among Atlantic Salmon populations, and that changes in body shape in the wild due to interbreeding with escaped farmed salmon may be minimal and masked by plasticity.
Download or read book Environmental and Genetic Sources of Geographic Variation in Populations of Atlantic Salmon Salmo Salar Linnaeus written by Brian Everett Riddell and published by . This book was released on 1979 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Species in the Spotlight written by and published by . This book was released on 2016 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In 2015, NMFS announced a new program to focus and redouble its efforts to protect some of the species that are currently among the most at risk of extinction in the near future. The effort is called the “Species in the Spotlight: Survive to Thrive” initiative, a concerted agency-wide effort to spotlight and save these highly at-risk species. This initiative includes targeted efforts vital for stabilizing their populations and preventing their extinction. The approach involves intensive efforts by us and our recovery partners to stabilize these species. Our goal is to reverse their declining trend so that the species will become a candidate for recovery in the future. The Gulf of Maine DPS of Atlantic salmon was selected as one of the eight species under this Initiative because of their current critically low abundance and a continuing declining trend in abundance. Atlantic salmon are anadromous fish, spending the first half of their life in freshwater rivers and streams in Maine and the second half maturing in the seas between Northeastern Canada and Greenland. In the United States, Atlantic salmon populations historically extended as far south as Long Island Sound. However, the southern populations have all been extirpated and today, the only remaining population of Atlantic salmon in U.S. waters exists in just a few rivers and streams in central and eastern Maine. Extinction from the United States is, therefore, a growing concern"--page 2, paragraph 1.
Download or read book Genetic Diversity in Atlantic Salmon and Salmon Management in Relation to Genetic Factors written by Dag Møller and published by New York : International Atlantic Salmon Foundation. This book was released on 1970 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Protein Variation in Atlantic Salmon written by L. Stradmeyer and published by . This book was released on 2005 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study on the Population genetic Structure of the Atlantic Salmon Salmo Salar L in Connection with Problems of Culturing written by V. I. Slynko and published by . This book was released on 1993 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
