Download Free Physiological Stress Responses Of Rio Grande Silvery Minnow Hybognathus Amarus Book in PDF and EPUB Free Download. You can read online Physiological Stress Responses Of Rio Grande Silvery Minnow Hybognathus Amarus and write the review.

"Education, arts and social sciences, natural and technical sciences in the United States and Canada".
In 1962 the Green River was poisoned and its native fishes killed so that the new Flaming Gorge Reservoir could be stocked with non-native game fishes for sportsmen. This incident was representative of water management in the West, where dams and other projects have been built to serve human needs without consideration for the effects of water diversion or depletion on the ecosystem. Indeed, it took a Supreme Court decision in 1976 to save Devils Hole pupfish from habitat destruction at the hands of developers. Nearly a third of the native fish fauna of North America lives in the arid West; this book traces their decline toward extinction as a result of human interference and the threat to their genetic diversity posed by decreases in their populations. What can be done to slow or end this tragedy? As the most comprehensive treatment ever attempted on the subject, Battle Against Extinction shows how conservation efforts have been or can be used to reverse these trends. In covering fishes in arid lands west of the Mississippi Valley, the contributors provide a species-by-species appraisal of their status and potential for recovery, bringing together in one volume nearly all of the scattered literature on western fishes to produce a monumental work in conservation biology. They also ponder ethical considerations related to the issue, ask why conservation efforts have not proceeded at a proper pace, and suggest how native fish protection relates to other aspects of biodiversity planetwide. Their insights will allow scientific and public agencies to evaluate future management of these animal populations and will offer additional guidance for those active in water rights and conservation biology. First published in 1991, Battle Against Extinction is now back in print and available as an open-access e-book thanks to the Desert Fishes Council.
Fish Conservation offers, for the first time in a single volume, a readable reference with a global approach to marine and freshwater fish diversity and fishery resource issues. Gene Helfman brings together available knowledge on the decline and restoration of freshwater and marine fishes, providing ecologically sound answers to biodiversity declines as well as to fishery management problems at the subsistence, recreational, and commercial levels. Written in an engaging and accessible style, the book: considers the value of preserving aquatic biodiversity offers an overview of imperiled fishes on a taxonomic and geographic basis presents a synthesis of common characteristics of imperiled fishes and their habitats details anthropogenic causes of decline examines human exploitation issues addresses ethical questions surrounding exploitation of fishes The final chapter integrates topics and evaluates prospects for arresting declines, emphasizing the application of evolutionary and ecological principles in light of projected trends. Throughout, Helfman provides examples, explores case studies, and synthesizes available information from a broad taxonomic, habitat, and geographic range. Fish Conservation summarizes the current state of knowledge about the degradation and restoration of diversity among fishes and the productivity of fishery resources, pointing out areas where progress has been made and where more needs to be done. Solutions focus on the application of ecological knowledge to solving practical problems, recognizing that effective biodiversity conservation depends on meeting human needs through management that focuses on long term sustainability and an ecosystem perspective.
With the aid of algorithms, this practical resource guides practitioners through selecting diagnostics, making a diagnosis, and selecting therapeutics. Features a complete list of differentials and information useful for making difficult diagnoses. Clinical signs are organized by body system for easy reference, and include an introduction to and description of the sign, plus the common causes for groups of birds. An algorithm accompanies each clinical sign to provide quick reference for recommended tests, as well as diagnostic plan and general treatments. References are listed for additional sources of information. A complete list of differential diagnoses and information aids in making difficult diagnoses. A formulary lists doses and treatment intervals for drugs commonly used in avian practice. Appendices address sources of equipment, typical weights of common pet birds, average breeding characteristics of some common psittacine species, toxic plants and plants suitable for use in aviaries, and line drawings of skeletal and visceral anatomy. Numerous illustrations throughout the text clarify important content.