Biologie/Zoologie

Angebot aus dem Sortiment Biologie/Zoologie

Artikel der Kategorie Biologie/Zoologie

  • Chimpanzee Behavior in the Wild

    Chimpanzee Behavior in the Wild

    ab 245,03 €

    Presents the first comprehensive list of behavior patterns of chimpanzees with more than 1,000 entriesProvides color photos and drawings to supplement the descriptions

  • Galling Arthropods and Their Associates

    Galling Arthropods and Their Associates

    ab 249,99 €

    Represents an important contribution to the knowledge of galling arthropods Explores the highly intricate and dynamic interactions between galling arthropods and their specialized host plants Discusses biodiversity and distribution patterns of gall-inducing arthropods Covers biological control of invasive species

  • Cognitive Development in Chimpanzees

    Cognitive Development in Chimpanzees

    ab 199,99 €

    From an evolutionary perspective, understanding chimpanzees offers a way of understanding the basis of human nature. This book on cognitive development in chimpanzees is the first of its kind to focus on infants reared by their own mothers within a natural setting, illustrating various aspects of chimpanzee cognition and the developmental changes accompanying them. The phenomena observed include face recognition, concept formation, object manipulation, tool manufacture and use, decision making, communication, self-awareness, and many other characteristics we associate with ourselves. Unique approaches both in the field and in the laboratory help to illustrate the cognitive world of our closest living evolutionary relatives. The subjects are chimpanzees of three generations inhabiting an enriched environment, as well as a wild community in West Africa. There is a foreword by Jane Goodall and 26 color photos of chimpanzees in the laboratory and in the field in West Africa are included.

  • Oxidative Stress and Hormesis in Evolutionary Ecology and Physiology

    Oxidative Stress and Hormesis in Evolutionary Ecology and Physiology

    ab 176,54 €

    Costantini, David. Chapter 1: Historical and Contemporary Issues of Oxidative Stress, Hormesis and Life History Evolution1.1 The Great Oxidation Event: From a Reducing to an Oxidising World1.2 Reactive Species, Antioxidants and Oxidative Stress1.2.1 On the Nature of Free Radicals and of Other Reactive Species1.2.2 Antioxidant Mechanisms1.2.3 Oxidative Stress1.2.4 Biochemical Integration and Modularity of Redox Systems1.3 Hormesis1.3.1 Historical Scenario: on the Birth, Death and Resurgence of Hormesis1.3.2 Types of Hormesis1.3.3 Quantitative Features of Hormesis and Problems with its Detection1.3.4 Hormesis and Evolutionary Fitness1.4 Life History EvolutionReferences Chapter 2: Early Life Hormesis and Oxidative Experiences Fine-Tune the Adult Phenotype2.1 Early Environment and Phenotypic Development2.2 Pre-Natal Maternal Effects: How Mothers Use Hormones to Shape their Offspring2.2.1 Organisational Effects of Androgens: Examples from Birds2.2.2 Stress Hormones and the Developmental Programming Hypothesis 2.3 Epigenetic and Transgenerational Hormetic Effects2.4 Post-Natal Hormetic Priming of Organism to Withstand Stress Later in Life2.4.1 Plants2.4.2 Invertebrates2.4.3 Birds2.4.4 Mammals2.5 The Compensatory Growth Paradigm2.6 ConclusionsReferences Chapter 3: Variation in Oxidative Stress Threats and Hormesis Across Environments3.1 The Struggle of Living in Oxidising Environments3.2 Coping with Thermal Challenges3.2.1 Thermal Relations of Organisms with their Environments3.2.2 The Good and the Bad of Cold and Heat Stress3.2.3 Thermal Stress and Body Colourations3.3 Solar Radiation: the Threat Comes from Above3.4 Partial Pressure of Oxygen3.4.11f7c Coping with Drastic Changes in Oxygen Concentration3.4.2 The Curious Case of Symbiotic Species3.5 Partial Pressure of Carbon Dioxide3.6 Coping with Multiple Environmental Stressors3.7 Environmentally Induced Variation in Redox State Regulation Within and Among Species3.7.1 Invertebrates3.7.2 Fish3.7.3 Birds3.8 ConclusionsReferences Chapter 4: Nutritional Ecology, Foraging Strategies and Food Selection 4.1 The Pervasive Nature of Food in Life4.2 The Oxidative Costs of Foraging4.3 Food Selection: Looking for Antioxidant Rewards4.4 Effects of Diet on Oxidant and Antioxidant Status4.4.1 Food Quality4.4.2 Food Restriction4.5 Antioxidants and Nutrients as Maternal Programming Tools of Offspring Oxidative Balance4.5.1 Dietary Antioxidants4.5.2 Nutrients4.6 On Nutrients, Toxins, Nutritional Hormesis, Essentiality and the Bertrand's Rule4.7 ConclusionsReferences Chapter 5: Coping with Physical Activity and Inactivity 5.1 Redox Biology of Physical Activity5.2 Physical Effort, Oxidative Stress and Hormesis5.3 Costs of Migration and Strategies to Mitigate Them5.3.1 Long-Distance Migrations5.3.2 Vertical Migration5.4 Quarrelsome Families: Competition Among Siblings5.5 Oxidative Stress Risks Through the Transitions From Dormancy to Arousal and Back 5.6 ConclusionsReferences Chapter 6: The Costs of Makeup in Sexual Selection and Social Signalling6.1 Visual Sexual Signalling in Males6.1.1 Carotenoid-Dependent Secondary Sexual Traits6.1.2 Melanin-Dependent Secondary Sexual Traits6.1.3 Testosterone and Ornaments 6.1.4 Achromatic Morphological Sexual Signals6.2 Visual Sexual Signalling in Females6.2.1 Body Colourations6.2.2 Egg Pigmentation and the Extended Phenotype6.3 Beyond Sex: Signalling in Social Contexts6.3.1 Signalling in Females6.3.2 Signalling in Young6.4 Warning Signals6.5 ConclusionsReferences Chapter 7: The Role of Oxidative Stress and Hormesis in Shaping Reproductive Strategies from Mating Systems to Parental Care7.1 Reproduction is a Time of Tradeoffs7.2 Mating Systems, Reproductive Tactics and Social Stress7.2.1 Courtship Displays7.2.2 The Waiting Male and The Fighting Female7.2.3 Cooperative Breeding7.2.4 Hierarchical Societies7.2.5 Two Sexes, but Many Morphs7.2.6 Polyandry and Sperm Competition7.2.7 Socially Monogamous, but Genetically Polygamous7.3 Male Fertility7.4 Egg Production7.5 Colostrum and Milk Production7.6 Offspring Rearing Effort7.7 Hormesis and Reproduction7.8 ConclusionsReferences Chapter 8: Combating Parasites: Immune Response and Inflammation8.1 Ecoimmunology and the Arms Race8.2 Oxidative Stress and Immune Response8.2.1 Immune Cells as Generators of Reactive Species8.2.2 Immune Response and Oxidative Stress In Vivo8.2.3 Inflammation from the Parasite’s Viewpoint8.3 Environmental Stress, Viruses Outbreaks and Oxidative Stress8.4 Hormesis and Immunology8.5 Glucocorticoids and Inflammation8.6 ConclusionsReferences Chapter 9: Variation Within and Among Species in Resistance to Oxidative Stress and Hormetic Responses9.1 The Essence of Biology: Variation          9.2 Early Life Experiences9.3 Styles of Coping with Stressful Situations9.4 Population Differentiation in Oxidative Stress Physiology9.5 Oxidative Profiles in Specific Ecological Circumstances9.5.1 Predation Risk9.5.2 Habitat Quality9.5.3 Daily and Seasonal Variation9.6 Environmental, Maternal and Genetic Contributions to Oxidative Balance9.7 Among Species Variation in Oxidative Damage and Antioxidant Defences9.8 Among Species Variation in Hormetic Responses9.9 Is Hormesis a Target of Natural Selection?9.10 ConclusionsReferences Chapter 10: Integrating Oxidative Stress and Hormesis into Research on Senescence and Survival Perspectives10.1 The Secret Nature of Longevity10.2 Mechanistic Hypotheses of Ageing10.2.1 From the Rate of Living to the Oxidative Stress Hypothesis of Ageing10.2.2 The Homeoviscous-Longevity Adaptation and the Membrane-Pacemaker Hypotheses of Ageing10.2.3 The Uncoupling to Survive Hypothesis of Ageing10.2.4 The Cell Senescence-Telomere Hypothesis of Ageing10.2.5 The Redox Stress Hypothesis of Ageing          10.3 Evolutionary Hypotheses of Ageing: Antagonistic Pleiotropy and Disposable Soma10.4 Antioxidant Mechanisms and Longevity in a Comparative Framework10.4.1 Correlative Evidence10.4.2 In Vitro Evidence10.5 Does Oxidative Stress Level Predict Survival in Wild Animals?10.6 Hormesis Promotes Longevity10.7 Sex Differences in Lifespan, Ageing and Hormesis10.8 Univariate and Multivariate Systems in the Study of Ageing10.9 ConclusionsReferences Index

  • Hermann Hocke: „Die Vögel der Provinz Brandenburg“ (1910) und die Avifauna der Mark um 1900 mit Bemerkungen zur Zeit 1920–1960

    Hermann Hocke: „Die Vögel der Provinz Brandenburg“ (1910) und die Avifauna der Mark um 1900 mit Bemerkungen zur Zeit 1920–1960

    ab 19,00 €

    Alex, Uwe. H. Hockes nachgelassenes Manuskript „Die Vögel der Provinz Brandenburg“ von 1910 – hier in großen Teilen erstmals veröffentlicht – enthält die Bilanz 50-jähriger feldornithologischer Beobachtungen und Aufzeichnungen durch Hocke und seine Mitstreiter. Hockes Werk ergänzt Herman Schalows „Beiträge zur Vogelfauna der Mark Brandenburg“ mit einer Vielzahl detaillierter Informationen, die Kenntnislücken schließen und eine genauere Einschätzung seitheriger Entwicklungen ermöglichen. Zusammen ergeben die Werke Hockes und Schalows einen einzigartigen Überblick über die Vogelwelt Brandenburgs um 1900, wie er in dieser Genauigkeit für kein anderes deutsches Bundesland vorliegt. Uwe Alex hat Hockes Manuskript erschlossen und ausgewertet, seine Angaben anhand von Publikationen und Tagebuchnotizen zeitgenössischer Ornithologen kritisch überprüft sowie 30 Eiersammlungen aus Brandenburg zum Vergleich herangezogen. So entstand ein realitätsnahes Bild der Verbreitung und Fortpflanzungsbiologie brandenburgischer Vögel für 1880 bis 1920.

  • Der Einfluss der Haltungsbedingungen auf die Mutter-Kind-Beziehung bei drei Unterarten des Tigers (Panthera tigris LINNAEUS, 1758) in zoologischen Gärten

    Der Einfluss der Haltungsbedingungen auf die Mutter-Kind-Beziehung bei drei Unterarten des Tigers (Panthera tigris LINNAEUS, 1758) in zoologischen Gärten

    ab 39,80 €

    Wanker-Stempell, Stephanie. Ziel dieser Studie war es, zu untersuchen, welche Gehegeparameter auf die verschiedenen Verhaltensweisen der Mutter-Kind-Beziehung von Tigern in menschlicher Obhut wirken. Eine weitergehende Frage war, ob es möglich ist, anhand des Elternaufwandes bei Tigern in verschiedenen zoologischen Einrichtungen Gehege zu beurteilen.

  • Acoustic Communication

    Acoustic Communication

    ab 197,94 €

    This SHAR volume discusses both the production and perception of acoustic signals that animals send and receive in order to communicate. Chapters address the information that animals communicate, how the communication is developed and learned, and how communication systems have adapted and evolved within species. The book will give examples from a variety of species.

  • Epithelial Transport

    Epithelial Transport

    ab 245,03 €

    Building from general principles, the authors clearly explain the fundamental role of epithelia in plasma electrolyte and water balance. Emphasis is placed on experimental approaches and methodology. A comprehensive glossary of terms is included.

  • Current and Future Reproductive Technologies and World Food Production

    Current and Future Reproductive Technologies and World Food Production

    ab 176,54 €

    Lamb, G. Cliff. Chapter 1. Current and future assisted reproductive technologies for mammalian farm animals.- Chapter 2. Current and future assisted reproductive technologies for avian species.- Chapter 3. Current and future assisted reproductive technologies for fish species.- Chapter 4. Incorporation of genetic technologies associated with applied reproductive technologies to enhance world food production.- Chapter 5. Impacts of Reproductive Technologies on Beef Production in the United States.- Chapter 6. Impact of Reproductive Technologies on Dairy Food Production in the Dairy Industry.- Chapter 7. Impact of swine reproductive technologies on pig and global food production.- Chapter 8. Impacts of reproductive technologies on beef production in South America.- Chapter 9. An Australasian perspective on the role of reproductive technologies in world food production.- Chapter 10. A perspective on the impact of reproductive technologies on food production in Africa.- Chapter 11. International perspectives on impacts of reproductive technologies to world food production in Asia.- Chapter 12. International perspectives on impacts of reproductive technologies to world food production in Asia associated with poultry production.- Chapter 13. Beef Cattle in the Year 2050.    

  • Primates of Western Uganda

    Primates of Western Uganda

    ab 213,99 €

    The editors of this volume are all experienced primatologists. Vernon Reynolds studied chimpanzees in the Budongo Forest, Uganda, in 1962, and wrote his first book about that experience. He subsequently returned to found the Budongo Forest Project in 1990. This highly successful project continues today. Recently Prof Reynolds published a definitive volume about the Budongo Forest chimpanzees: The Chimpanzees of the Budongo Forest, published by Oxford University Press in 2005. James Paterson had a long career as a primatologist at the University of Calgary, and specialized in the study of baboons and other monkeys. Hugh Notman studied the Sonso chimpanzees in 1996, and then again in 1999 and 2000 when he collected data on pant-hoot vocalizations for his doctoral research. Nicholas Newton-Fisher began studying chimpanzees in the Budongo Forest in 1994, his doctoral research on the relationships of adult male chimpanzees - a rather neglected area at that time. He was the first to study the chimpanzees of the Sonso region of the Budongo forest, having first to habituate them to behavioural observation at close quarters, and to being trailed through the forest. His studies of this chimpanzee society has continued to the present day and forms the foundation and framework for research conducted by others on these chimpanzees. He has published numerous articles on the behaviour and ecology of these chimpanzees, and, in collaboration with others including Vernon Reynolds, his research has provided a deep understanding of this unique community. His current interest is in the use of aggression by male chimpanzees to coerce females' mating behaviour, and the strategies used by females to counter such aggression. He has discovered vigorous retaliation by females against male aggression, including females forming coalitions to respond to males, a behaviour otherwise unreported in wild chimpanzees.

  • Der Mensch in Zahlen

    Der Mensch in Zahlen

    ab 29,99 €

    Schaal, Steffen. Wie groß? Wie schwer? Wie dick? Wie schnell? Wie viel? Wie oft? So beginnen sehr häufig Fragen in der Schule und im Studium. Als Antworten werden genaue und möglichst rekordverdächtige Struktur- und Funktionsdaten erwartet. Darüber hinaus sind es häufig Fragen zum eigenen Körper, zur Gesundheit oder zu gesellschaftlichen Veränderungen, die einen nach zahlenmäßigen Belegen suchen lassen.Das bewährte Konzept der 3. Auflage wurde in der komplett überarbeiteten und aktualisierten 4. Auflage inhaltlich und strukturell fortgesetzt. Ein Einführungstext in die Kapitel bringt die Leser zum Staunen. Übersichtsseiten führen in die Themenbereiche ein. Auf allgemeine Daten folgen spezielle, auf Angaben zur Struktur folgen Zahlen zur Physiologie und zur Molekularbiologie. Statistische Werte vermitteln zum Schluss einen Überblick bei Krankheiten, Drogenproblemen und bei der aktuellen Bevölkerungsentwicklung. Die Relevanz der Daten für Mensch und Gesellschaft in Alltag und Wissenschaft animiert die Leser zum Nachdenken.Die AutorenProf. Dr. Steffen Schaal, Professor für Biologie und ihre Didaktik, Institut für Naturwissenschaften und Technik, Pädagogische Hochschule LudwigsburgProf. i. R. Dr. Konrad Kunsch, Fakultät für Kultur- und Naturwissenschaften der PH LudwigsburgDr. Steffen Kunsch, Privatdozent und Leitender Oberarzt der Universitätsmedizin GöttingenAus einer Rezension zur Vorauflage:Die scheinbar trockene Materie wird durch eine didaktisch geschickte Aufbereitung zu einer (...) interessanten Lektüre gemacht. Für jeden, der an Zahlen interessiert ist, ist dieses Nachschlagewerk eine Fundgrube. Medizinische Monatszeitschrift für Pharmazeuten

  • Wildlife Resources

    Wildlife Resources

    ab 181,89 €

    The general interest and attention paid to the use of the renewable natural resources of the world have increased greatly during the last decades. This is due to the environmental dilemma into which mankind has got itself by the total disregard of ecological facts and laws, the underprizing of natural resources and the overemphasis on economic develop

  • Ostracodology - Linking Bio- and Geosciences

    Ostracodology - Linking Bio- and Geosciences

    ab 235,39 €

    Comprehensive update of ongoing research in Ostracod sciences Illustrations of ostracods as model groups in various research areas (evolutionary biology of reproductive modes, palaeoecology related to climate change and global warming, ...) Test cases of pathways of arthropod evolution, with special reference to crustacean comparative morphology

  • Planthoppers

    Planthoppers

    ab 384,13 €

    Planthoppers include some of the most devastating pests of major agricultural crops throughout the world. One species, the rice brown planthopper, is among the most economically important pests in Asia. In past decades, government policies encouraged the control of rice planthoppers with synthetic pesticides, a tactic which promoted insecticide resistance and often led to the pesticide-induced resurgence of pest populations. To deter planthopper outbreaks, a more ecologically sound management strategy is being implemented, one based on a thorough investigation of population dynamics, natural enemies, and the genetics of host plant and insecticide adaptation. In the natural habitats of North America and Europe, scientists have also used planthoppers as model organisms to test ecological and evolutionary theory. The consequence of these diverse studies is an extremely scattered literature on planthoppers that has never been synthesized from an ecological perspective. This volume summarizes what is known about planthopper ecology and biological control. It takes a theoretical approach yet is deeply concerned with the application of theory to the practical problems of pest management.

  • Viola KOEHLEIN, F: VIOLA

    Viola KOEHLEIN, F: VIOLA

    ab 39,90 €

    Köhlein, Fritz. Dr. h. c. Fritz Köhlein ist Autor vieler, renommierter Gartenbücher. Er genießt großes Ansehen unter Fachleuten. Sein Garten ist immer wieder Experimentierfeld, um neue Gattungen und Arten zu studieren.

  • Antifouling Compounds

    Antifouling Compounds

    ab 192,59 €

    Müller, Werner E. G.. This book is the first to cover the sources of natural product antifoulants, their ecological functions, methods of characterisation and possible exploitation in antifouling.

  • Exotische Vögel: Chinesische Beschreibungen und Importe Ptak, R: Exotische Vögel: Chinesische Beschreibungen und Imp

    Exotische Vögel: Chinesische Beschreibungen und Importe Ptak, R: Exotische Vögel: Chinesische Beschreibungen und Imp

    ab 32,00 €

    Ptak, Roderich. Dieser Sammelband umfasst drei Studien in deutscher Sprache, die sich mit Papageien und anderen "sprechenden" Vögeln, Nashornvögeln und Eisvögeln beschäftigen. Des weiteren enthält er einen englischsprachigen Aufsatz zum Thema "Birds of Paradise in Macau? A Note on the Aomen jilüe and Other Sources". In allen Fällen geht es um folgende Fragen: Welche Kenntnisse hatten die "alten" Chinesen von den jeweiligen Vogelarten? Was können wir zu entsprechenden vogelkundlichen Ausdrücken und Texten sagen? Wie ist die traditionelle Terminologie aus heutiger zoologischer Sicht zu beurteilen? Daneben spielt der Import von Vögeln und Vogelprodukten - meist Federn - eine gewisse Rolle. Besonders Werke der Epochen Song bis Ming werden hierzu untersucht. Die Importe kamen in der Regel aus Südostasien. Mit ihnen verbinden sich häufig exotische Sichtweisen - nicht unähnlich jenen, die auch Europas Interesse an schönen und wundersamen Tieren schürten. Somit können die Aufsätze dieses Bandes nicht nur als philologisch orientierte Studien zur historischen Ornithologie, sondern ebenso als Beiträge zum fernöstlichen Handel mit seltenen Produkten gelesen werden.

  • Stadtfauna

    Stadtfauna

    ab 49,00 €

    Städte beherbergen eine erstaunlich artenreiche Tierwelt. Die

  • Coastal Plankton

    Coastal Plankton

    ab 38,00 €

    Larink, Otto. Inhalt Preface of the second edition 6 Preface of the first edition 6 Foreword by the authors – Second edition 7 Foreword by the authors – First edition 7 Introduction Phytoplankton diversity 9 Zooplankton diversity 10 Pelagic larvae – the meroplankton 10 Life cycles with resting stages 13 Sampling and processing 14 Bacillariophyceae (Diatomeae, Bacillariophyta) 16 Various microalgae: Cyanobacteria. Chlorophyta, Prasinophyceae; Chromista, Prymnesiomonada, and Silicoflagellida; Ebriida 28 Dinoflagellata (Dinophyceae, Pyrrhophyta, Peridineae) 30 Choanoflagellata 38 Foraminifera 38 “Radiolaria” 40 Ciliophora 44 Spirotrichea, Choreotrichia, Tintinnina 48 Porifera 52 Cnidaria 52 Cnidaria, Scyphozoa 56 Cnidaria, Hydrozoa 60 Ctenophora 74 Platyhelminthes 76 Plathyhelminthes, Trematoda, Digenea 78 Nemertea (Nemertini) 80 Mollusca, Gastropoda 82 Mollusca, Bivalvia 88 Sipuncula 90 Annelida, “Polychaeta” 92 Crustacea, Branchiopoda, Cladocera 114 Crustacea, Copepoda 118 Crustacea, Cirripedia 126 Crustacea, Decapoda 130 Crustacea, Peracarida 136 “Rotifera” (“Rotatoria”) 140 Phoronida 142 Bryozoa (Ectoprocta) 144 Chaetognatha 146 Hemichordata, Enteropneusta 148 Echinodermata, Asteroida 150 Echinodermata, Ophiuroida 154 Echinodermata, Echinoida 158 Echinodermata, Holothuroida 162 Tunicata (Urochordata) 164 Acrania (Leptocardia, Cephalochordata) 170 Teleostei 172 Miscellaneous 178 Literature 183 Selected internet-addresses of databases with information on marine plankton 185 Index 187

  • Compression

    Compression

    ab 160,49 €

    The mechanical response of the basilar membrane in the cochlea plays a fundamental role in human hearing. This volume discusses the main aspects of cochlear compression, including anatomy and physiology; the perceptual consequences of compression in normal hearing; the effects of hearing loss on compression; and its function in hearing aids and cochlear implants. The role of compression has increasing practical significance as it is incorporated into hearing aids and cochlear implants to compensate for inadequate compression in people with cochlear hearing loss.

  • Electroreception

    Electroreception

    ab 213,99 €

    Ted Bullock is a huge name in neuroscience. He was involved with the Society for Neuroscience, is a past president and recipient of the Grand Prize for outstanding contributions to neuroscience. He was also the first president of the International Society for Neurobiology

  • The Welfare of Horses

    The Welfare of Horses

    ab 223,63 €

    Waran, N.. Written by experts on the field Focuses on the major issues affecting the welfare of horses Assesses welfare, nutrition, behaviour problems with horses

  • Activation of Hormone and Growth Factor Receptors

    Activation of Hormone and Growth Factor Receptors

    ab 281,41 €

    This volume contains the papers presented in the NATO Advanced Research Workshop "Activation of Hormone and Growth Factor Receptors: Molecular Mechanisms and Consequences" held in Nafplion, Greece on September 25-30, 1988. The objective of NATO ARW is to assess the state of-the-art in a given scientific area and to formulate recommendations for future research in emerging areas of science by promoting international scientific contacts. In the Nafplion meeting this objective was reached by an international group of speakers, senior Greek scientists and graduates involved in relevant research areas. The Workshop was made possible by the generous support of the Scientific Council of NATO. We thank Drs. G. Sinclair and L.V. daCunha, Directors of the NATO ARW's and ASI's (Advanced Study Institutes) respectively, for their wholehearted support and advice. The International Union of Biochemistry awarded additional travel grants leading to increased international participation. Furthermore, the Secretariat of Science and Technology, the Ministry of Culture and Sciences and the National Hellenic Research Foundation contributed financially and by supporting personnel. We sincerely thank all these organizations for their support. Our heartful thanks are also extended to the Mayor of the Municipality of Nafplion, Mr.

  • Drosophila

    Drosophila

    ab 139,09 €

    Dahmann, Christian. This is a comprehensive collection of methods and protocols for Drosophila, one of the oldest and most commonly used model organisms in modern biology. The protocols are written by the scientists who invented the methods making this book the perfect reference manual for Drosophila researchers. The straightforward presentation of Drosophila protocols will bolster successful experimental design and lead to reproducible results, and the troubleshooting tips are an invaluable aid for researchers at all levels. This book will advance the use of Drosophila as a model organism by collecting standard, introductory protocols and advanced protocols, simultaneously providing a platform for introductory research and facilitation advanced study. The text presents a diverse set of techniques that range from the basic handling of flies to more complex applications. Review chapters provide concise overviews of selected experimental systems.

  • Monograph of the Spathidiida (Ciliophora, Haptoria) 1 Foissner, W: Monograph of the Spathidiida 1

    Monograph of the Spathidiida (Ciliophora, Haptoria) 1 Foissner, W: Monograph of the Spathidiida 1

    ab 235,39 €

    Prof. W. Foissner is Professor (Extraordinarius) of Zoology at Salzburg University. Since 1996 he has been President of German Society of Protozoologists. He has on his name over 500 publications, including about 300 peer-reviewed papers and 8 books (with together over 5000 pages), in international and national scientific journals, most about ciliates, but some on flagellates, naked and testate amoebae, and sporozoans. He is an invited speaker at many meetings. His main interests are Taxonomy, phylogeny, evolution, ecology and biodiversity of freshwater and soil protozoa, mainly ciliates and testate amoebae.

  • Alfred Kühn (1885 bis 1968)

    Alfred Kühn (1885 bis 1968)

    ab 34,00 €

    Mocek, Reinhard. Der Philosoph und Wissenschaftshistoriker Reinhard Mocek legt hiermit die erste Biographie Kühns vor und zeichnet − auf der Basis des umfangreichen, verstreuten Briefwechsels − ein facettenreiches, eindringliches Lebensbild, das Kühn nicht nur als einen geistreichen Experimentator und Biotheoretiker, sondern auch als einen verantwortungsvollen „Homo politicus“ in den politischen Umbrüchen seiner Zeit zeigt. „Die besondere Lebensnähe der diesem Bericht zugrunde liegenden Materialien […] und die gelungene Balance des Berichterstatters zwischen Empathie und historischer Distanznahme […] bewirken es, dass dem doch eher traditionellen wissenschaftshistorischen Genre der Biographie hier ganz neue, überraschende Züge abgewonnen werden.“ (Aus dem Geleitwort von Hans-Jörg Rheinberger)

  • The trinity of energy conversion

    The trinity of energy conversion

    ab 45,80 €

    Busse, Rhea von. This study was designed to get a better understanding of the movements of a flying bat, the aerial footprint, and the energy expenses during a range of speeds and to connect those measurements with each other. The interactions of kinematics, aerodynamics and energy consumption were examined in a nectarfeeding bat species Leptonycteris yerbabuenae, flying in a wind tunnel over a range of flight speeds from 0 m/s (hovering) to 7 m/s. The movements of the wings were recorded with high speed cameras. The body and wing markers were digitized and transformed into three dimensional coordinates using direct linear transformation (DLT). An open flow system with a respirometry mask installed in the wind tunnel was used to measure the oxygen cfdbonsumption of the bats during flight. The vortices behind a flying bat were visualized and the affecting forces calculated using stereo digital particle image velocimetry (SDPIV). The kinematics revealed that the wing motion changed gradually from a flexible, cambered wing surface with a more horizontally-directed stroke plane at low speeds to a fairly rigid surface with a more vertically-directed stroke plane at high speeds. The wing area, angle of attack, and camber, which are determinants of the lift production, all decreased with increasing speed. The armwing is responsible for the main changes in the wing area during the wing beat. Several mechanisms allow for a very high angle of attack at low speeds without stalling, including a higher camber of the wing and a larger deflection of the leading edge flap. The leading edge flap may also contribute to adjusting the airflow over the wing by influencing the formation of the leading edge vortex. At speeds below 3.25 m/s, the handwing performs a backward flick where it is turned up side down; the low values of the stroke plane angle, the downstroke ratio and the span ratio indicate a greater contribution of the upstroke to the weight support at low speeds than at higher speeds, with higher lift production and reduced thrust production at those low flight speeds. The wake analysis showed that, in agreement with previous studies, each wing generates its own vortex loop, which is present from the beginning of the downstroke until mid-upstroke and induces a downwash; at the end of the upstroke the reversed vortex loops are shed, inducing an upwash. The lift-to-thrust ratio shows the highest values, indicating a maximal flight efficiency at intermediate speeds. The comparison between the force coefficient of the tip-vortex and the angle of attack showed a time lag, indicating a delayed vortex shedding relative to the wing motion and the presence of unsteady effects. The metabolic power input did not differ significantly between flight speeds. However, the two individuals differed significantly with the female having higher energetic flight costs probably due to the precedent pregnancy. It must be noted that visits to the feeder were rarely longer than 5 s during hovering flight, which could result in an underestimation of the metabolic rate for these flights. The U-shaped mechanical power output and the flat metabolic power input indicate a changing mechanical efficiency over speed, with the highest mechanical efficiency at low and high speeds.