Virtually every area of research associated with sharks and their relatives has been strongly impacted by the revolutionary growth in technology. The questions we can now ask are very different than those reported even two decades ago. Modern immunological and genetic techniques, satellite telemetry and archival tagging, modern phylogenetic analysis, GIS, and bomb dating, are just a few of the techniques and procedures that have become a part of our investigative lexicon. A modern synthesis of the biology of Chondrichthyans, Biology of Sharks and Their Relatives, Second Edition discusses significant advances in the development and application of new molecular techniques to the understanding of the phylogenetic relationships among and between these groups. The book considers the effect of global changes on the status of sharks and their relatives, and how advances in technology and analytical techniques have changed not only how we approach problem solving and scientific investigations, but how we formulate questions. The book also introduces applications of new and novel laboratory devices, techniques, and field instruments. This second edition of the award winning and groundbreaking original exploration of the fundamental elements of the taxonomy, systematics, physiology, and ecology of sharks, skates, rays, and chimera, presents cohesive and integrated coverage of key topics and discusses technological advances used in modern shark research. Offering a well-rounded picture for students and researchers, and far above competitors in scope and research, this new volume holds a wealth of data on the current status of Chondrichthyan research and provides the basis and springboard for original research. Cover photo by Justin Gilligan
Immunity studies in sharks over the past three decades have produced some remarkable discoveries. If one message rings true, it is that alternative animal model systems, such as sharks and their relatives, have contributed very substantially to a better understanding of the development evolution of our own immune system. Immunobiology of the Shark describes the cellular, genetic, and molecular specifics of immune systems in sharks. Diverse approaches were employed to study the immunobiology of the shark from basic microscopic observations to detailed genome annotation. The book also raises a series of fascinating questions, which can be addressed experimentally using today’s technology. This book will be a valuable resource for mainstream immunologists, comparative immunologists, geneticists, ecologists, evolutionary biologists, and investigators engaged in shark research. The book also aims to illustrate the magnificence of these animals as model systems and underscores the importance of their study to further understand their complex, and often enigmatic, biology.
Over the last decade, the study of shark biology has benefited from the development, refinement, and rapid expansion of novel techniques and advances in technology. These have given new insight into the fields of shark genetics, feeding, foraging, bioenergetics, imaging, age and growth, movement, migration, habitat preference, and habitat use. This pioneering book, written by experts in shark biology, examines technologies such as autonomous vehicle tracking, underwater video approaches, molecular genetics techniques, and accelerometry, among many others. Each detailed chapter offers new insights and promises for future studies of elasmobranch biology, provides an overview of appropriate uses of each technique, and can be readily extended to other aquatic fish and marine mammals and reptiles.
Krone der Schöpfung? Vor 100 000 Jahren war der Homo sapiens noch ein unbedeutendes Tier, das unauffällig in einem abgelegenen Winkel des afrikanischen Kontinents lebte. Unsere Vorfahren teilten sich den Planeten mit mindestens fünf weiteren menschlichen Spezies, und die Rolle, die sie im Ökosystem spielten, war nicht größer als die von Gorillas, Libellen oder Quallen. Vor 70 000 Jahren dann vollzog sich ein mysteriöser und rascher Wandel mit dem Homo sapiens, und es war vor allem die Beschaffenheit seines Gehirns, die ihn zum Herren des Planeten und zum Schrecken des Ökosystems werden ließ. Bis heute hat sich diese Vorherrschaft stetig zugespitzt: Der Mensch hat die Fähigkeit zu schöpferischem und zu zerstörerischem Handeln wie kein anderes Lebewesen. Anschaulich, unterhaltsam und stellenweise hochkomisch zeichnet Yuval Harari die Geschichte des Menschen nach und zeigt alle großen, aber auch alle ambivalenten Momente unserer Menschwerdung.
The essential book for everyone interested in sharks, from the expert requiring a major reference work, to the layperson fascinated by their beauty, biology and diversity. Packed with unique colour illustrations, line drawings and photographs, the book is well-presented and easy to use. It is currently the only single guide to cover over 500 of the world's shark species. It incorporates the most recent taxonomic revisions of many shark families, featuring not only many species that were only described in recent years, but several more that are still awaiting their scientific names. Its production is timely. Overfishing and the shark fin trade have pushed sharks into the most threatened categories of marine animals. Their depletion has serious implications for the stability of marine ecosystems. Some species are now listed in international environmental agreements, including the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), and they are becoming a management priority for many regional fisheries management organisations. Implementation of conservation and fisheries management measures, and international trade regulation is impossible without a good identification guide.
Ein Besuch der Apnoe-Weltmeisterschaft wird für James Nestor zum Beginn eines persönlichen Abenteuers: Fasziniert von der Kompromisslosigkeit dieses Sports, erlernt er selbst das Freitauchen. Und fortan zieht es ihn immer tiefer in die verborgene Welt der Ozeane hinab: Er besucht eine Forschungsstation 20 Meter unter der Meeresoberfläche, trifft renommierten Meeresbiologen bei ihrer Arbeit, schwimmt mit Walen und geht im U-Boot auf Tauchstation. Dabei entdeckt er einen unfassbar reichen Lebensraum, mit telepathischen Korallen, leuchtenden Fischen und rätselhaften Riesenkraken. Bis er schließlich den tiefsten Punkt der Erde erreicht – die absolute Grenze für Mensch und Technik. Eine grandiose Entdeckungsreise, die zugleich unseren Wurzeln nachspürt.
Schauen Sie hinter die Kulissen von Mutter Natur. Tauchen Sie ein in die faszinierende Welt der Pflanzen, Tiere, Bakterien und Co. Erfahren Sie von Rene Fester Kratz und Donna Rae Siegfried, wie die Photosynthese abluft, was bei der Zellteilung passiert, wie ein kosystem funktioniert und vieles mehr. Lassen Sie sich die Grundlagen der Genetik und Evolutionslehre erklren und bestaunen Sie die wichtigsten Entdeckungen in der Biologie. Sie werden sehen: Die Wissenschaft des Lebens ist eine spannende Sache!
A must-have reference for marine biologists; fishery scientists; oceanographers; and marine, zoo, and aquarium veterinarians, this volume brings readers up to speed on significant changes in the study of sharks.
Zoo Animal and Wildlife Immobilization and Anesthesia, SecondEdition is a fully updated and revised version of the firstcomprehensive reference on anesthetic techniques in captive andfree-ranging wildlife. Now including expanded coverage ofavian and aquatic species, this exhaustive resource presentsinformation on the full range of zoo and wildlife species. Coveringtopics ranging from monitoring and field anesthesia to CPR andeuthanasia, the heart of the book is devoted to 53 species-specificchapters providing a wealth of information on little-known andcommon zoo and wildlife animals alike. In addition to new species chapters, the new edition brings a newfocus on pain management, including chronic pain, and moreinformation on species-specific physiology. Chapters on airwaymanagement, monitoring, emergency therapeutics, and fieldprocedures are all significantly expanded as well. This update toZoo Animal and Wildlife Immobilization and Anesthesia is aninvaluable addition to the library of all zoo and wildlifeveterinarians.
The large amount of information on fish reproduction available is not always readily accessible to all interested parties. Written to appeal to aquaculturalists, conservation managers, and scientific researchers, Methods in Reproductive Aquaculture provides an overview of available techniques and addresses ways to improve depleted stocks of endangered fish and other species. The book focuses on gamete quality and management, exploring new objectives and areas of application and research, and new tools to deal with some aspects in reproduction of aquatic species. It begins with an examination of basic methods and techniques for gamete extraction, mainly sperm collection and egg stripping in different species, then describes techniques of spawning stimulation in males and females. The volume then highlights sperm and egg quality evaluation and considers sperm analysis from a practical broodstock management point of view and in the selection of appropriate breeders. The book goes on to discuss techniques used for artificial fertilization and the procedures for obtaining modified offspring. It introduces cryopreservation procedures for sperm, oocytes, and embryos, then discusses the materials and facilities required for gamete preparation and freezing-thawing procedures. The book concludes with an extensive section detailing sperm cryopreservation protocols for fifty-six marine and freshwater species. Unique in its focus on both marine and freshwater aquaculture of fishes, the book provides information on endangered, highly profitable species for aquaculture or fisheries and species with high potential in laboratory research. Presenting the available information in an easily understandable way, this is not merely a techniques book, but also a complete guide to fish reproduction, gamete quality, and management.
The waters around Australia, the worldâe(tm)s smallest continent, are home to the greatest diversity of sharks and rays on Earth. Fully 100 of these sea creatures (along with their little-known relatives, the chimaerids) have been named or described since the first edition of this bookâe"the biggest revision of the Class Chondrichthyes since the time of Linneaus. This second edition of Sharks and Rays of Australia brings more than 300 of these species to life in newly commissioned, full-color illustrations. Here, in precisely painted detail, are the weird silvery ghost shark and the remarkably camouflaged ornate wobbegong; spurdogs and swell sharks; the primitive frilled shark and the blacktip, a fast swimmer capable of leaping out of the water like a dolphin. Peter Last and John Stevens review the major shake-ups in the elasmobranch family treeâe"sorting out, for instance, dogfishes and skatesâe"and include updated family keys, the latest information about species ranges, and new distribution maps. Extensively revised species descriptions reflect additional fisheries and newly gleaned life history and biological informationâe"all essential to conservation efforts as sharks die in commercial bycatches and end up on restaurant menus. An essential tool for conservation biologists trying to save threatened sharks, now under siege worldwide, this marvelous volume will also appeal to fish biologists, divers, naturalists, commercial and recreational fishermen, and anyone with an appreciation for these ancient evolutionary survivors.

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