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Author : Johan Hammar
Publisher :
ISBN 13 : 9789155443429
Total Pages : 31 pages
Book Rating : 4.4/5 (434 download)
Download or read book Evolutionary Ecology of Arctic Char (Salvelinus Alpinus (L.)) written by Johan Hammar and published by . This book was released on 1998 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Johan Hammar
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (116 download)
Download or read book Evolutionary ecology of arctic char (Salvelinus alpinus (L.)) written by Johan Hammar and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pierre Magnan
Publisher : Springer Science & Business Media
ISBN 13 : 9401713529
Total Pages : 345 pages
Book Rating : 4.4/5 (17 download)
Download or read book Ecology, behaviour and conservation of the charrs, genus Salvelinus written by Pierre Magnan and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Salvelinus species are one of the most thoroughly studied groups of fishes. Many reasons explain this intense interest in charr biology. Charrs have a Holarctic distribution encompassing many Asian, North American, and European countries and occupy diverse marine and freshwater environments. Furthermore, the current distribution of charr includes areas that were directly influenced by climate and topographic change associated with the many Pleistocene glaciations. Undoubtedly, these conditions have promoted much of the tremendous morphological, ecological, and genetic variability and plasticity within Salvelinus species and they make charr very good models to study evolutionary processes 'in action'. Many charr species also exhibit demographic characteristics such as slow growth, late maturity, and life in extreme environments, that may increase their susceptibility to extinction from habitat changes and overexploitation, especially in depauperate aquatic habitats. This vulnerability makes understanding their biology of great relevance to biodiversity and conservation. Finally, charr are of great cultural, commercial, and recreational significance to many communities, and their intimate linkage with human societies has stimulated much interest in this enigmatic genus. This volume comprises a selection of papers presented at the fourth International Charr Symposium held in Trois-Rivières (Québec, Canada), from 26 June to 1 July 2000. It includes 31 papers on ecological interactions and behaviour, trophic polymorphism, movement and migration, ecophysiology and evolutionary genetics, ecological parasitology, environmental stress and conservation. These studies cannot cover all recent developments in the ecology, behaviour and conservation of Salvelinus species, but collecting them into a special volume should bring attention to current research on this important genus and stimulate further work on Salvelinus species.
Author : B. Streit
Publisher : Birkhäuser
ISBN 13 : 3034888805
Total Pages : 373 pages
Book Rating : 4.0/5 (348 download)
Download or read book Evolutionary Ecology of Freshwater Animals written by B. Streit and published by Birkhäuser. This book was released on 2013-03-11 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolutionary ecology includes aspects of community structure, trophic interactions, life-history tactics, and reproductive modes, analyzed from an evolutionary perspective. Freshwater environments often impose spatial structure on populations, e.g. within large lakes or among habitat patches, facilitating genetic and phenotypic divergence. Traditionally, freshwater systems have featured prominently in ecological research and population biology. This book brings together information on diverse freshwater taxa, with a mix of critical review, synthesis, and case studies. Using examples from bryozoans, rotifers, cladocerans, molluscs, teleosts and others, the authors cover current conceptual issues of evolutionary ecology in considerable depth. The book can serve as a source of critically evaluated ideas, detailed case studies, and open problems in the field of evolutionary ecology. It is recommended for students and researchers in ecology, limnology, population biology, and evolutionary biology.
Author : Robert Poulin
Publisher : Princeton University Press
ISBN 13 : 1400840805
Total Pages : 343 pages
Book Rating : 4.4/5 (8 download)
Download or read book Evolutionary Ecology of Parasites written by Robert Poulin and published by Princeton University Press. This book was released on 2011-06-27 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parasites have evolved independently in numerous animal lineages, and they now make up a considerable proportion of the biodiversity of life. Not only do they impact humans and other animals in fundamental ways, but in recent years they have become a powerful model system for the study of ecology and evolution, with practical applications in disease prevention. Here, in a thoroughly revised and updated edition of his influential earlier work, Robert Poulin provides an evolutionary ecologist's view of the biology of parasites. He sets forth a comprehensive synthesis of parasite evolutionary ecology, integrating information across scales from the features of individual parasites to the dynamics of parasite populations and the structuring of parasite communities. Evolutionary Ecology of Parasites presents an evolutionary framework for the study of parasite biology, combining theory with empirical examples for a broader understanding of why parasites are as they are and do what they do. An up-to-date synthesis of the field, the book is an ideal teaching tool for advanced courses on the subject. Pointing toward promising directions and setting a research agenda, it will also be an invaluable reference for researchers who seek to extend our knowledge of parasite ecology and evolution.
Author : Gavin Johnston
Publisher : John Wiley & Sons
ISBN 13 : 1405171502
Total Pages : 288 pages
Book Rating : 4.4/5 (51 download)
Download or read book Arctic Charr Aquaculture written by Gavin Johnston and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important book draws together, for the first time, a vastwealth of information on all major aspects of the farming of Arcticcharr, a highly prized and commercially valuable salmonid. Theauthor, Gavin Johnston who has many years' experience of farmingArctic charr, teaching about and researching the species, hasproduced a book that is a landmark publication and an essentialpurchase for all those involved with the species. The book is broadly divided into three sections. The firstsection covers Arctic charr interactions with humans and thecharr's biological requirements for culture. Section two is apractical guide to the art and science of early-rearing Arcticcharr; a hands on application of current knowledge in Arctic charraquaculture. The final section of the book focuses on thecommercial production of Arctic charr, providing cutting-edgeinformation for all those involved in the exploitation of thisvaluable species. Arctic Charr Aquaculture is an essential purchase foranyone involved in, or considering involvement in farming of thisspecies. Farm managers and other personnel in fish farms andexperimental aquaculture units, fish and aquatic biologists willfind a huge amount of useful data in this book. Libraries in alluniversity departments and research establishments whereaquaculture, fisheries and fish biology are studies and taughtshould have copies of this book on their shelves. This book bringstogether for the first time the knowledge needed to farm and marketArctic Charr. Part One is an overview of Arctic Charr aquaculturebeginning with the history and development of Charr aquaculture,the biological attributes of Arctic Charr, the physicalrequirements for growth and commercial production requirements.Other chapters are devoted to Charr health, nutrition and feeding.Part Two is a practical guide for the producer operating an ArcticCharr farm either as a vertically integrated operation or asdiscrete hatcheries and grow out farms. Part Three is devoted tothe business of commercially producing Arctic Charr, and althoughit deals specifically with Charr it also covers many businessaspects of farming relevant to any fish species under cold watercultivation. It covers farm business management, the economics andfinance of Arctic Charr farming, marketing Charr products and aclosing section on how to avoid the pitfalls which others includingthe author have experienced.
Author : E.K. Balon
Publisher : Springer
ISBN 13 :
Total Pages : 948 pages
Book Rating : 4.E/5 ( download)
Download or read book Charrs written by E.K. Balon and published by Springer. This book was released on 1980-04-30 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Montgomery McDowall
Publisher : Timber Press (OR)
ISBN 13 :
Total Pages : 330 pages
Book Rating : 4.:/5 (318 download)
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.
Author : Matthew Brachmann
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (132 download)
Download or read book The Evolution of Phenotypic Divergence in Icelandic Arctic Charr (Salvelinus Alpinus). written by Matthew Brachmann and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The process of ecological speciation involves the divergence single populations into distinct species through ecologically based divergent selection. I studied the interacting developmental, genetic, and ecological mechanisms that underlie ecological speciation in populations of Icelandic Arctic charr (Salvelinus alpinus) that vary in phenotypic divergence. Arctic charr diverged into benthic and pelagic resource-based morphs after recolonization of post-glacial lakes within the last 10,000 years from a single glacial refugium. First, I assessed the role of allometric covariation between body shape and size as a source of developmental bias. I found evidence for a common pattern of phenotypic divergence across a benthic-pelagic ecological axis, which is strongly shaped by allometric effects that may facilitate rapid evolutionary responses to selection. Second, I assessed whether the requirements for adaptive divergence as the result of ecological opportunity by testing for relationships among body shape and size, resource use, and gene flow. Significant relationships between resource use and body shape and size are consistent with the existence of performance trade-offs between benthic and pelagic environments. Benthic and pelagic morphs across populations showed similar differences in resource use likely arising from a common utilization of niche space. Resource use predicted benthic and pelagic ancestry suggesting a causal link between divergence in resource use and reductions in gene flow between morphs. Lastly, I investigated the genomic consequences of adaptive divergence between sympatric morphs and reconstructed the divergence history of populations to interpret the causes of genomic patterns. Models of sympatric divergence with continuous gene flow and allopatric divergence followed by secondary contact were both supported indicating that the evolutionary history of this species is more complex than originally thought. Phenotypic and ecological variation was associated with genomic differentiation between sympatric morphs and the formation of many narrow genomic regions of differentiation, which are related to both phenotypic and ecological variation in divergent populations. This suggests that divergent selection has resulted in the genomic differentiation of sympatric morphs. Overall, my study suggests that adaptive divergence in response to environmental heterogeneity promotes parallel phenotypic specialization on resources which may lead to genomic differentiation and ultimately ecological speciation with gene flow.
Author : Lionel Johnson
Publisher :
ISBN 13 :
Total Pages : 612 pages
Book Rating : 4.:/5 (44 download)
Download or read book Biology of the Arctic Charr written by Lionel Johnson and published by . This book was released on 1984 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes papers on the following: taxonomy, habitat and species interactions, life history and bioenergetics, management and utilization, parasites, aquaculture, eutrophication and other habitat changes, and the interaction between charr and humans.
Author : Lionel Johnson
Publisher : Univ. of Manitoba Press
ISBN 13 : 0887550924
Total Pages : 573 pages
Book Rating : 4.8/5 (875 download)
Download or read book Biology of the Arctic Charr written by Lionel Johnson and published by Univ. of Manitoba Press. This book was released on 1984-01-01 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the International Symposium on Arctic charr held in Winnipeg, 4-8 May 1981, on the campus of the University of Manitoba.
Author : R.L. Lee
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (112 download)
Download or read book Ecology of the Arctic Char, Salvelinus Alpinus L., the Brook Trout, Salvelinus Fontinalis Mitchill, and the Atlantic Salmon, Salmo Salar L., in the Leaf River, Ungava written by R.L. Lee and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jeffrey L. Kershner
Publisher :
ISBN 13 : 9781934874547
Total Pages : 831 pages
Book Rating : 4.8/5 (745 download)
Download or read book Trout and Char of the World written by Jeffrey L. Kershner and published by . This book was released on 2019 with total page 831 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first comprehensive look at the taxonomy, life history, and conservation status of the world's trout and char. These are fascinating and beautiful fish that rate high for the angler as well as for tourist and recreational economies. Trout and char also play key roles in the ecology of many lake and river systems around the world. Trout and char are abundant in many regions, but most native species are on the decline. Some are classified as vulnerable, threatened, or endangered. Because of their widespread stocking in regions where they are not native, some trout and char also are the cause for threats to other native species. Loss of habitat, an expanding human population, and rapid climate change are challenging their future as streams warm and waters become more variable in their flows. This book examines trout and char from all these perspectives. Early chapters explore the unique diversity and life history aspects of trout and char and provide information on the taxonomy and systematics while also detailing some of unique life histories. New information is presented about species diversity and distributions by country. Summary chapters explore significant conservation and management challenges of broad interest to scientists, resource managers, anglers, and interested public. Trout and Char of the World end s with a series of essays exploring the future of trout and char over the next 50 years. Trout and Char of the World will be a primary resource for trout and char biologists, conservationists, and anglers in the many countries where trout and char are native or have been introduced, and a resource for anyone interested in learning more about the diversity and distribution of trout and char worldwide.--
Author : Pierre Magnan
Publisher : Springer Science & Business Media
ISBN 13 : 9781402007842
Total Pages : 368 pages
Book Rating : 4.0/5 (78 download)
Download or read book Ecology, behaviour and conservation of the charrs, genus Salvelinus written by Pierre Magnan and published by Springer Science & Business Media. This book was released on 2002-07-31 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Salvelinus species are one of the most thoroughly studied groups of fishes. Many reasons explain this intense interest in charr biology. Charrs have a Holarctic distribution encompassing many Asian, North American, and European countries and occupy diverse marine and freshwater environments. Furthermore, the current distribution of charr includes areas that were directly influenced by climate and topographic change associated with the many Pleistocene glaciations. Undoubtedly, these conditions have promoted much of the tremendous morphological, ecological, and genetic variability and plasticity within Salvelinus species and they make charr very good models to study evolutionary processes 'in action'. Many charr species also exhibit demographic characteristics such as slow growth, late maturity, and life in extreme environments, that may increase their susceptibility to extinction from habitat changes and overexploitation, especially in depauperate aquatic habitats. This vulnerability makes understanding their biology of great relevance to biodiversity and conservation. Finally, charr are of great cultural, commercial, and recreational significance to many communities, and their intimate linkage with human societies has stimulated much interest in this enigmatic genus. This volume comprises a selection of papers presented at the fourth International Charr Symposium held in Trois-Rivières (Québec, Canada), from 26 June to 1 July 2000. It includes 31 papers on ecological interactions and behaviour, trophic polymorphism, movement and migration, ecophysiology and evolutionary genetics, ecological parasitology, environmental stress and conservation. These studies cannot cover all recent developments in the ecology, behaviour and conservation of Salvelinus species, but collecting them into a special volume should bring attention to current research on this important genus and stimulate further work on Salvelinus species.
Author : Arctic Climate Impact Assessment
Publisher : Cambridge University Press
ISBN 13 : 0521865093
Total Pages : 1053 pages
Book Rating : 4.5/5 (218 download)
Download or read book Arctic Climate Impact Assessment - Scientific Report written by Arctic Climate Impact Assessment and published by Cambridge University Press. This book was released on 2005-11-07 with total page 1053 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arctic is now experiencing some of the most rapid and severe climate change on earth. Over the next 100 years, climate change is expected to accelerate, contributing to major physical, ecological, social, and economic changes, many of which have already begun. Changes in arctic climate will also affect the rest of the world through increased global warming and rising sea levels. Arctic Climate Impact Assessment was prepared by an international team of over 300 scientists, experts, and knowledgeable members of indigenous communities. The report has been thoroughly researched, is fully referenced, and provides the first comprehensive evaluation of arctic climate change, changes in ultraviolet radiation and their impacts for the region and for the world. It is illustrated in full color throughout. The results provided the scientific foundations for the ACIA synthesis report - Impacts of a Warming Arctic - published by Cambridge University Press in 2004.
Author : Bruce Turner
Publisher : Springer Science & Business Media
ISBN 13 : 1468446525
Total Pages : 651 pages
Book Rating : 4.4/5 (684 download)
Download or read book Evolutionary Genetics of Fishes written by Bruce Turner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 651 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is my hope that this collection of reviews can be profitably read by all who are interested in evolutionary biology. However, I would like to specifically target it for two disparate groups of biologists seldom men tioned in the same sentence, classical ichthyologists and molecular biologists. Since classical times, and perhaps even before, ichthyologists have stood in awe at the tremendous diversity of fishes. The bulk of effort in the field has always been directed toward understanding this diversity, i. e. , extracting from it a coherent picture of evolutionary processes and lineages. This effort has, in turn, always been overwhelmingly based upon morphological comparisons. The practical advantages of such compari sons, especially the ease with which morphological data can be had from preserved museum specimens, are manifold. But considered objectively (outside its context of "tradition"), morphological analysis alone is a poor tool for probing evolutionary processes or elucidating relationships. The concepts of "relationship" and of "evolution" are inherently genetic ones, and the genetic bases of morphological traits are seldom known in detail and frequently unknown entirely. Earlier in this century, several workers, notably Gordon, Kosswig, Schmidt, and, in his salad years, Carl Hubbs, pioneered the application of genetic techniques and modes of reasoning to ichthyology. While certain that most contemporary ichth yologists are familiar with this body of work, I am almost equally certain that few of them regard it as pertinent to their own efforts.
Author : Bror Jonsson
Publisher : Springer Science & Business Media
ISBN 13 : 9400711891
Total Pages : 720 pages
Book Rating : 4.4/5 (7 download)
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.
