Download or read book A Test of Outbreeding Depression Between Populations of the Cowpea Weevil Callosobruchus Maculatus Envolved in the Same Environment written by Jonas Bieri and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Test for Outbreeding Depression written by Gerard B. Caddick and published by . This book was released on 1994 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Management of Fragmented Animal and Plant Populations written by Richard Frankham and published by Oxford University Press. This book was released on 2017 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the greatest unmet challenges in conservation biology is the genetic management of fragmented populations of threatened animal and plant species. More than a million small, isolated, population fragments of threatened species are likely suffering inbreeding depression and loss of evolutionary potential, resulting in elevated extinction risks. Although these effects can often be reversed by re-establishing gene flow between population fragments, managers very rarely do this. On the contrary, genetic methods are used mainly to document genetic differentiation among populations, with most studies concluding that genetically differentiated populations should be managed separately, thereby isolating them yet further and dooming many to eventual extinction Many small population fragments are going extinct principally for genetic reasons. Although the rapidly advancing field of molecular genetics is continually providing new tools to measure the extent of population fragmentation and its genetic consequences, adequate guidance on how to use these data for effective conservation is still lacking. This accessible, authoritative text is aimed at senior undergraduate and graduate students interested in conservation biology, conservation genetics, and wildlife management. It will also be of particular relevance to conservation practitioners and natural resource managers, as well as a broader academic audience of conservation biologists and evolutionary ecologists.
Download or read book The Natural History of Inbreeding and Outbreeding written by Nancy Wilmsen Thornhill and published by University of Chicago Press. This book was released on 1993-08-15 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inbreeding, the mating of close kin, and outbreeding, the mating of distant relatives or unrelated organisms, have long been important subjects to evolutionary biologists. Inbreeding reduces genetic diversity in a population, increasing the likelihood that genetic defects will become widespread and deprive a population of the diversity it may need to cope with its environment. Most plants and animals have evolved behavioral and morphological mechanisms to avoid inbreeding. However, today many endangered species exist only in small, very isolated populations where inbreeding is unavoidable, so it has become a concern for conservationists. In this volume, twenty-six experts in evolution, behavior, and genetics examine the causes and consequences of inbreeding. The authors ask whether inbreeding is as problematic as biologists have thought, under what ecological conditions inbreeding occurs, and whether organisms that inbreed have mechanisms to dampen the anticipated problems of reduced genetic variation. The studies, including theoretical and empirical work on wild and captive populations, demonstrate that many plants and animals inbreed to a greater extent than biologists have thought, with variable effects on individual fitness. Graduate students and researchers in evolutionary biology, animal behavior, ecology, and conservation biology will welcome this wide-ranging collection.
Download or read book Methods for Risk Assessment of Transgenic Plants written by Gösta Kjellsson and published by Birkhäuser. This book was released on 2012-12-06 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present work is a continuation of the work initiated in Autumn 1991, which resulted in the book, published by Birkhauser Verlag in 1994, entitled: Methods for Risk Assessment of Transgenic Plants. I. Competition, Establishment and Ecosystem Effects. Already when the work on volume 1 started, it was obvious to the authors, that not only the physical establishment of a transgenic plant outside the cultivated area was important for risk assessment, but also the possible gene-transfer from transgenic plants to other plants had to be considered. It was then decided to write a second volume on test methods, as a complement to the first, covering the main topics: Pollination, gene-transfer and population impacts. The main user groups for this volume are scientists and students working with plant population genetics and risk assessment and administrators with responsibility for legislation of transgenic plants. In order to cover such a broad range of topics, specialist knowledge was required. Therefore, colleagues in Denmark and Switzerland, working in these fields in relation to the concerns of using transgenic plants, were asked to participate. The result was a Danish-Swiss cooperation. A list of contributors to the book and their addresses is shown on p. VII. Financial support, which made the work possible, was given by: The National Environmental Research Institute, Denmark, the Federal Office of Environment, Forest and Landscape, Switzerland, the National Forest and Nature Agency, Denmark, the Danish Environmental Protection Agency and the European Commission, DC XI.
Download or read book Environmental Risk Assessment of Genetically Modified Organisms written by K.R. Hayes and published by CABI. This book was released on 2007 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: The decline of many individual and wild fish stocks has commanded an increase in aquaculture production to meet the protein demands of a growing population. Alongside selective breeding schemes and expanding facilities, transgenic methods have received increasing attention as a potential factor in meeting these demands. With a focus on developing countries, this third text in the series provides detailed information on environmental biosafety policy and regulation and presents methodologies for assessing ecological risks associated with transgenic fish --Publisher website, http://www.cabi.org/bk_BookDisplay.asp?PID=2054, viewed 6 December, 2007.
Download or read book Genetics Demography and Viability of Fragmented Populations written by Andrew G. Young and published by Cambridge University Press. This book was released on 2000-10-12 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed introduction to the genetic and demographic issues relevant to the conservation of fragmented populations.
Download or read book Encyclopedia of Ocean Sciences written by John H. Steele and published by Academic Press. This book was released on 2001-09-20 with total page 3399 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of Ocean Sciences is the most current, authoritative, and comprehensive resource on the science of the oceans. This ambitious work includes contributions from leading scientists around the world on the physical processes that drive the oceans and the chemical, biological, and geological disciplines. The Encyclopedia also covers ancillary topics such as ocean technology, law of the oceans, global programs, marine policy, the use of the oceans for food and energy, and the impact of pollution and climate changes. The many different methods used to study the oceans are covered, from ship-based systems to satellite remote sensing. Users will enjoy easy access to more than 400 articles, each approximately 3000-4000 words in length with further reading lists and extensive cross referencing. Each article provides comprehensive coverage of a particular topic, and is designed for a wide audience of students, academics, researchers, and professionals. The articles are written at a level that allows undergraduate students to understand the material, while providing active researchers with the latest technical information. Also available online on ScienceDirect. For online version information, please visit http://www.info.sciencedirect.com/reference_works Presents 402 original articles covering all the physical, chemical and biological aspects of ocean science Brings together classic scientific theories with the newest discoveries, technologies, and applications Written by the world's leading researchers and developed by a prestigious editorial board Makes information easy to find with an intuitive format, extensive cross references, further reading lists, and complete index Illustrated with more than 1900 figures and full color throughout Developed alongside each other, the Encyclopedia of Ocean Sciences together with the Encyclopedia of Atmospheric Sciences provide readers a with comprehensive resource, and a link between these two fields.
Download or read book Induced Fish Breeding written by Nihar Ranjan Chattopadhyay and published by Academic Press. This book was released on 2016-10-19 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Induced Fish Breeding: A Practical Guide for Hatcheries takes a successive approach to explaining the use of breeding technology with proven scientific methods. It provides real-life examples for the purpose of maximizing fish and seed production to support overall sustainability in aquaculture. It is a concise reference to understanding the latest developments in the field, useful for anyone who is involved in fisheries or hatchery management as well as researchers and students who need to understand the technology. A practice originally developed to produce quality seed in captivity, induced breeding has made great strides in fish populations for India. The book offers a practical and succinct overview—from existing methods and operations to recent trends and their impacts on aquaculture for the future. Provides detailed information about empirical breeding practices like mixed spawning and indiscriminate hybridization Presents the environmental and hormonal influence on maturation and spawning of fish with real-life fish breeding examples from around the world Includes step-by-step scientific measures to help solve problems arising from common fish-farming mistakes Provides real-life examples for the purpose of maximizing fish and seed production to support overall sustainability in aquaculture
Download or read book Advances in Aquaculture Hatchery Technology written by Geoff Allan and published by Elsevier. This book was released on 2013-02-19 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquaculture is the fastest-growing food production sector in the world. With demand for seafood increasing at astonishing rates, the optimization of production methods is vital. One of the primary restrictions to continued growth is the supply of juveniles from hatcheries. Addressing these constraints, Advances in aquaculture hatchery technology provides a comprehensive, systematic guide to the use of current and emerging technologies in enhancing hatchery production.Part one reviews reproduction and larval rearing. Aquaculture hatchery water supply and treatment systems, principles of finfish broodstock management, genome preservation, and varied aspects of nutrition and feeding are discussed in addition to larval health management and microbial management for bacterial pathogen control. Closing the life-cycle and overcoming challenges in hatchery production for selected invertebrate species are the focus of part two, and advances in hatchery technology for spiny lobsters, shrimp, blue mussel, sea cucumbers and cephalopods are all discussed. Part three concentrates on challenges and successes in closing the life-cycle and hatchery production for selected fish species, including tuna, striped catfish, meagre, and yellowtail kingfish. Finally, part four explores aquaculture hatcheries for conservation and education.With its distinguished editors and international team of expert contributors, Advances in aquaculture hatchery technology is an authoritative review of the field for hatchery operators, scientists, marine conservators and educators. Provides a comprehensive guide to the use of technologies in enhancing hatchery production Examines reproduction and larval rearing, including genetic improvement and microdiets Discusses challenges in hatchery production of specific species
Download or read book Geographical Genetics MPB 38 written by Bryan K. Epperson and published by Princeton University Press. This book was released on 2003-08-11 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Population genetics has made great strides in applying statistical analysis and mathematical modeling to understand how genes mutate and spread through populations over time. But real populations also live in space. Streams, mountains, and other geographic features often divide populations, limit migration, or otherwise influence gene flow. This book rigorously examines the processes that determine geographic patterns of genetic variation, providing a comprehensive guide to their study and interpretation. Geographical Genetics has a unique focus on the mathematical relationships of spatial statistical measures of patterns to stochastic processes. It also develops the probability and distribution theory of various spatial statistics for analysis of population genetic data, detailing exact methods for using various spatial features to make precise inferences about migration, natural selection, and other dynamic forces. The book also reviews the experimental literature on the types of spatial patterns of genetic variation found within and among populations. And it makes an unprecedented strong connection between observed measures of spatial patterns and those predicted theoretically. Along the way, it introduces readers to the mathematics of spatial statistics, applications to specific population genetic systems, and the relationship between the mathematics of space-time processes and the formal theory of geographical genetics. Written by a leading authority, this is the first comprehensive treatment of geographical genetics. It is a much-needed guide to the theory, techniques, and applications of a field that will play an increasingly important role in population biology and ecology.
Download or read book Ascaris written by Celia Holland and published by Newnes. This book was released on 2013-05-09 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book tackles a number of different perspectives concerning the parasitic helminth Ascaris, both in animals and in humans and the disease known as ascariasis. It seeks to identify interesting, exciting and novel aspects, which will interest readers from a broad range of disciplines.Over a quarter of the world's population are infected with the human roundworm, and the equivalent in pigs is equally ubiquitous. Both contribute to insidious and chronic nutritional morbidity, and this has been quantified, in humans, as disability adjusted life years approximating 10.5 million. Ascaris larvae develop in host parenteral tissues, and the resultant pathology has been condemnation. Ascariasis, despite its staggering global prevalence and the sheer numbers of people it infects, remains a classic neglected disease. However, renewed interest in the consequences of early infection with worms from the perspective of immune modulation, co-infections and the development of allergy further enhances the relevance of these parasites. Brings together a wide range of topics and approaches and recent, comprehensive and progressive research concerning the neglected parasite Ascaris Provides a blueprint of how a single parasite entity can stimulate interest in basic biology, clinical science, veterinary science, public health and epidemiology Presents a wealth of new insights given that a book on this parasite has not been published for over 20 years 16 chapters from a range of top authors from around the world
Download or read book Incompatibility in Angiosperms written by D. de Nettancourt and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Attempting to collect, sort out, comment on and summarize from available literature the relevant information dealing with a specific problem is always a difficult task which necessarily involves sub jective choices and implies a considerable risk of errors and omis sions. The difficulty is increased when, as in the case of incompati bility in angiosperms, the subject to be treated traces its history to preDarwinian times and reflects the total sum of numerous in vestigations dealing with widely different disciplines, such as ge netics, cytology, biochemistry, systematics and physiology, which no single reviewer may pretend to master sufficiently to avoid completely the possibility of misinterpretation. Furthermore, the complexity of the task is further augmented by the fact that the student of incompatibility, confronted as he or she is with still poorly understood phenomena of genetic control and molecular recognition, often tends to be speculative and, in some instances, over-imaginative at the time of fitting research observations and experimental data into appropriate models, schemes and hypo theses. The compensation for such a state of affair is, however, a strong one and lies in the remarkable willingness and readiness of "in compatibilists" to cooperate, and to provide information, ex planations and illustrations to anyone attempting to penetrate into their universe of research and of reflection.
Download or read book Conservation and the Genetics of Populations written by Fred W. Allendorf and published by John Wiley & Sons. This book was released on 2009-03-12 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conservation and the Genetics of Populations gives acomprehensive overview of the essential background, concepts, andtools needed to understand how genetic information can be used todevelop conservation plans for species threatened withextinction. Provides a thorough understanding of the genetic basis ofbiological problems in conservation. Uses a balance of data and theory, and basic and appliedresearch, with examples taken from both the animal and plantkingdoms. An associated website contains example data sets and softwareprograms to illustrate population genetic processes and methods ofdata analysis. Discussion questions and problems are included at the end ofeach chapter to aid understanding. Features Guest Boxes written by leading people in the fieldincluding James F. Crow, Nancy FitzSimmons, Robert C. Lacy, MichaelW. Nachman, Michael E. Soule, Andrea Taylor, Loren H. Rieseberg,R.C. Vrijenhoek, Lisette Waits, Robin S. Waples and AndrewYoung. Supplementary information designed to support Conservationand the Genetics of Populations including: Downloadable sample chapter Answers to questions and problems Data sets illustrating problems from the book Data analysis software programs Website links An Instructor manual CD-ROM for this title is available. Pleasecontact our Higher Education team at ahref="mailto:[email protected]"[email protected]/afor more information.
Download or read book A Research Review of Interventions to Increase the Persistence and Resilience of Coral Reefs written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2019-04-05 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coral reef declines have been recorded for all major tropical ocean basins since the 1980s, averaging approximately 30-50% reductions in reef cover globally. These losses are a result of numerous problems, including habitat destruction, pollution, overfishing, disease, and climate change. Greenhouse gas emissions and the associated increases in ocean temperature and carbon dioxide (CO2) concentrations have been implicated in increased reports of coral bleaching, disease outbreaks, and ocean acidification (OA). For the hundreds of millions of people who depend on reefs for food or livelihoods, the thousands of communities that depend on reefs for wave protection, the people whose cultural practices are tied to reef resources, and the many economies that depend on reefs for fisheries or tourism, the health and maintenance of this major global ecosystem is crucial. A growing body of research on coral physiology, ecology, molecular biology, and responses to stress has revealed potential tools to increase coral resilience. Some of this knowledge is poised to provide practical interventions in the short-term, whereas other discoveries are poised to facilitate research that may later open the doors to additional interventions. A Research Review of Interventions to Increase the Persistence and Resilience of Coral Reefs reviews the state of science on genetic, ecological, and environmental interventions meant to enhance the persistence and resilience of coral reefs. The complex nature of corals and their associated microbiome lends itself to a wide range of possible approaches. This first report provides a summary of currently available information on the range of interventions present in the scientific literature and provides a basis for the forthcoming final report.
Download or read book Reproductive Ecology of Tropical Forest Plants written by K.S. Bawa and published by CRC Press. This book was released on 1991-01-15 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reproductive Ecology of Tropical Forest Plants reviews recent developments in the reproductive ecology of tropical forest plants and explores the implications of current findings on forest structure, function, management, and conservation. It examines how insights gained from reproductive ecology can be helpful in the management of tropical forest resources and discusses directions of future research.
Download or read book Using Science to Improve the BLM Wild Horse and Burro Program written by National Research Council and published by National Academies Press. This book was released on 2013-10-04 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using Science to Improve the BLM Wild Horse and Burro Program: A Way Forward reviews the science that underpins the Bureau of Land Management's oversight of free-ranging horses and burros on federal public lands in the western United States, concluding that constructive changes could be implemented. The Wild Horse and Burro Program has not used scientifically rigorous methods to estimate the population sizes of horses and burros, to model the effects of management actions on the animals, or to assess the availability and use of forage on rangelands. Evidence suggests that horse populations are growing by 15 to 20 percent each year, a level that is unsustainable for maintaining healthy horse populations as well as healthy ecosystems. Promising fertility-control methods are available to help limit this population growth, however. In addition, science-based methods exist for improving population estimates, predicting the effects of management practices in order to maintain genetically diverse, healthy populations, and estimating the productivity of rangelands. Greater transparency in how science-based methods are used to inform management decisions may help increase public confidence in the Wild Horse and Burro Program.
