Ecology of invertebrate diseases

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Ecology of invertebrate diseases

edited by Ann E. Hajek, David I. Shapiro-Ilan

Wiley, 2018

  • : cloth

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Includes bibliographical references and index

内容説明・目次

内容説明

A rapidly growing interdisciplinary field, disease ecology merges key ideas from ecology, medicine, genetics, immunology, and epidemiology to study how hosts and pathogens interact in populations, communities, and entire ecosystems. Bringing together contributions from leading international experts on the ecology of diseases among invertebrate species, this book provides a comprehensive assessment of the current state of the field. Beginning with an introductory overview of general principles and methodologies, the book continues with in-depth discussions of a range of critical issues concerning invertebrate disease epidemiology, molecular biology, vectors, and pathogens. Topics covered in detail include: Methods for studying the ecology of invertebrate diseases and pathogens Invertebrate pathogen ecology and the ecology of pathogen groups Applied ecology of invertebrate pathogens Leveraging the ecology of invertebrate pathogens in microbial control Prevention and management of infectious diseases of aquatic invertebrates Ecology of Invertebrate Diseases is a necessary and long overdue addition to the world literature on this vitally important subject. This volume belongs on the reference shelves of all those involved in the environmental sciences, genetics, microbiology, marine biology, immunology, epidemiology, fisheries and wildlife science, and related disciplines.

目次

List of Contributors xvii Preface xxi Section I Introduction 1 1 General Concepts in the Ecology of Invertebrate Diseases 3 Ann E. Hajek and David I. Shapiro-Ilan 1.1 Introduction 3 1.1.1 What Is Disease? 4 1.1.2 Terminology and Measurements 5 1.1.2.1 Prevalence/Incidence 5 1.1.2.2 Pathogenicity/Virulence 5 1.1.2.3 Infection/Infectivity 6 1.1.2.4 Immunity 6 1.1.2.5 Transmission 7 1.1.2.6 Epizootic and Enzootic Diseases 7 1.1.2.7 Cycles of Infection 8 1.1.2.8 R0 and the Host Density Threshold 10 1.1.3 Factors Influencing the Ecology of Invertebrate Diseases 11 1.1.3.1 Host Range 12 1.2 Types of Studies 13 1.3 Why Study the Ecology of Invertebrate Diseases? 13 1.4 What this Book Covers 14 Acknowledgments 16 References 16 2 Methods for Studying the Ecology of Invertebrate Diseases and Pathogens 19 Raquel Campos-Herrera and Lawrence A. Lacey 2.1 Introduction 19 2.2 Traditional Methods for Studying Diseases 19 2.2.1 Sampling Goals 19 2.2.2 Sampling Regimes 20 2.2.3 Methodologies 20 2.2.3.1 Searching for Infected Insects Using General Entomological Sampling Methods 23 2.2.3.2 Selective Media 23 2.2.3.3 Extraction Methods 24 2.2.3.4 Airborne Spore Sampling 24 2.2.3.5 Insect Baiting 24 2.2.3.6 Dispersal of Entomopathogens: Mark-Release-Recapture Method 25 2.3 Molecular Tools to Assist in the Detection and Quantification of Pathogens and their Impact on the Host 25 2.3.1 Employment of Proteins: The Beginning of the Molecular Era in Invertebrate Pathology 26 2.3.2 Techniques Based on the Nucleic Acids: the "Pre ]Omics" Era 27 2.3.3 Advanced Techniques: qPCR, NGS, and the Arrival of the ]Omics Era 31 2.4 Traditional Versus Molecular Methods: Advantages and Limitations 33 2.5 Advancing the Frontiers of Ecology using Pathogens and Diseases 36 2.6 Conclusion38 Acknowledgments 38 References 38 Section II The Basics of Invertebrate Pathogen Ecology 49 3 The Pathogen Population 51 Leellen F. Solter and James J. Becnel 3.1 Introduction 51 3.2 Characteristics of Pathogens 51 3.2.1 Invasiveness and Infectivity 52 3.2.1.1 Routes of Entry 53 3.2.1.2 Establishment of Infection and Tissue Tropism 54 3.2.2 Pathogenicity, Virulence, and Pathogen Replication 55 3.2.2.1 Virulence Factors 57 3.2.2.2 Attenuation or Enhancement of Virulence 58 3.2.3 Latency 59 3.2.4 Obligate, Opportunistic, and Facultative Pathogens 60 3.2.5 Transmission 61 3.2.5.1 Horizontal Transmission 61 3.2.5.2 Vertical Transmission 62 3.2.5.3 Indirect Transmission 63 3.2.6 Genetic Variability and Potential for Coevolution with Hosts 64 3.2.6.1 Species and Strains 64 3.2.6.2 Host Specificity 65 3.3 Pathogen Effects on Host Development and Behavior 66 3.4 Pathogen Populations 67 3.4.1 Density ]Dependent Pathogens 67 3.4.2 Density ]Independent Pathogens 68 3.4.3 Pathogen Persistence in the Host Population 68 3.4.3.1 Chronic Infections and Vertical Transmission 69 3.4.3.2 Alternative and Alternate/Intermediate Hosts 69 3.4.3.3 Pathogen Survival in Cadavers and in Plant Tissues 70 3.4.3.4 Latency in Host Populations 70 3.4.4 Persistence of Pathogen Stages in the Environment 71 3.5 Dispersal and Spatial Distribution of Pathogens 72 3.5.1 Physical Factors: Wind and Water Dispersal 73 3.5.2 Biological Factors 73 3.5.3 Spatial Distribution 74 3.6 Pathogen Interactions 75 3.6.1 Interactions with other Biological Agents 75 3.6.2 Interactions with Pesticides and other Chemicals 77 3.6.3 Enhancing Factors 77 3.7 Conclusion 78 References 79 4 The Host Population 101 Louela A. Castrillo 4.1 Introduction 101 4.2 General Host Factors 103 4.2.1 Routes of Pathogen Acquisition 103 4.2.2 Insect Species, Life Stage, Age, and Gender 103 4.2.3 Population Density 104 4.3 Barriers to Microbial Infection 105 4.3.1 Insect Integument 105 4.3.2 Tracheae 107 4.3.3 Insect Gut 108 4.3.3.1 Peritrophic Membrane and Basal Lamina 108 4.3.3.2 Conditions in the Gut Lumen 108 4.3.3.3 Sloughing of Infected Epidermal Cells 109 4.4 Defenses against Microbial Infection 110 4.4.1 Innate Immune System 110 4.4.1.1 Constitutive Innate Immunity: Cellular Immunity 110 4.4.1.2 Constitutive Innate Immunity: Phenoloxidase 113 4.4.1.3 Induced Innate Immunity: Reactive Oxygen Species 113 4.4.1.4 Induced Innate Immunity: Antimicrobial Peptides 114 4.4.2 Microbiome ]Based Defenses 117 4.4.2.1 Gut Microbiota 117 4.4.2.2 Intracellular Symbionts 118 4.4.3 Behavioral Defenses 119 4.4.3.1 Avoidance/Evasion 120 4.4.3.2 Grooming and Hygienic Behaviors 121 4.4.3.3 Diet ]Based Prophylactic and Therapeutic Defenses 122 4.4.3.4 Thermoregulation 123 4.4.3.5 Deposition of Antimicrobial Compounds 123 4.5 Resistance via Priming 124 4.6 Conclusion 125 Acknowledgments 126 References 126 5 Abiotic Factors 143 Dana Ment, Ikkei Shikano and Itamar Glazer 5.1 Introduction 143 5.2 The Surviving Unit 143 5.2.1 Nematodes 143 5.2.2 Fungi 144 5.2.3 Viruses 145 5.2.4 Bacteria 146 5.3 Abiotic Factors Affecting Invertebrate Pathogens 146 5.3.1 Temperature 146 5.3.1.1 Nematodes 147 5.3.1.2 Fungi 148 5.3.1.3 Viruses 150 5.3.1.4 Bacteria 152 5.3.2 Moisture and Humidity 152 5.3.2.1 Nematodes 153 5.3.2.2 Fungi 154 5.3.2.3 Viruses 155 5.3.2.4 Bacteria 156 5.3.3 Ultraviolet Radiation 156 5.3.3.1 Nematodes 157 5.3.3.2 Fungi 157 5.3.3.3 Viruses 158 5.3.3.4 Bacteria 158 5.3.4 Chemical Inputs 159 5.3.4.1 Nematodes 159 5.3.4.2 Fungi 160 5.3.4.3 Viruses 160 5.3.4.4 Bacteria 161 5.3.5 Other Habitat Characteristics 162 5.3.5.1 Nematodes 162 5.3.5.2 Fungi 163 5.3.5.3 Viruses 164 5.3.5.4 Bacteria 165 5.4 Mechanisms of Survival 165 5.4.1 Nematodes 165 5.4.2 Fungi 166 5.4.3 Viruses 166 5.4.4 Bacteria 167 5.5 Conclusion 167 References 169 6 The Biotic Environment 187 Jenny S. Cory and Pauline S. Deschodt 6.1 Introduction 187 6.2 Tritrophic Interactions 188 6.2.1 Further Complexity 190 6.3 Pathogen- Natural Enemy Interactions 191 6.3.1 Entomopathogen-Entomopathogen Interactions 191 6.3.2 Entomopathogen-Parasitoid Interactions 195 6.3.2.1 Effects of Pathogens on Parasitoids 195 6.3.2.2 Effects of Parasitoids on Pathogens 197 6.3.2.3 Population Level Effects 198 6.3.3 Pathogen-Predator Interactions 199 6.3.4 Conclusion 200 6.4 Microbe- Mediated Defense 200 6.4.1 Heritable Symbionts 201 6.4.2 Do Gut Microflora Influence Pathogen Susceptibility? 202 6.4.3 Future Directions 204 6.5 Conclusion 204 Acknowledgments 204 References 205 Section III Ecology of Pathogen Groups 213 7 Viruses 215 Trevor Williams 7.1 Introduction 215 7.2 Diversity of Invertebrate Pathogenic Viruses 216 7.3 Distribution of Invertebrate Pathogenic Viruses 219 7.4 Key Aspects of Pathogen Ecology 220 7.5 Transmission 221 7.5.1 Horizontal Transmission 221 7.5.1.1 Estimating Horizontal Transmission 223 7.5.2 Vertical Transmission 223 7.6 Persistence 225 7.6.1 Persistence within the Host 225 7.6.2 Persistence Outside of the Host 226 7.6.2.1 Persistence on Plants 227 7.6.2.2 Persistence in Soil 229 7.6.2.3 Persistence in Water 230 7.7 Dispersal 231 7.7.1 Host ]Mediated Dispersal 231 7.7.2 Environmental Factors Involved in Dispersal 232 7.7.3 Biotic Factors that Assist the Dispersal of Viruses 233 7.7.3.1 Predators 233 7.7.3.2 Parasitoids 234 7.7.3.3 Other Organisms 234 7.7.4 Agricultural Practices that Affect Dispersal 234 7.7.5 Spatial Patterns of Dispersal 235 7.8 Genetic Diversity in Viruses 235 7.8.1 Genetic Diversity is Pervasive in Virus Populations 235 7.8.2 Genetic Diversity Favors Virus Survival 237 7.8.3 What Generates So Much Genetic Diversity? 238 7.8.4 How Is Genetic Diversity Transmitted? 239 7.9 Role of Host Behavior in Virus Ecology 240 7.9.1 Foraging Decisions: What and Where to Eat 240 7.9.2 The Risks of Cannibalism 241 7.9.3 Sexually Transmitted Viral Diseases 241 7.9.4 Ecological Consequences of Host Manipulation by Viruses 242 7.9.4.1 Molecular Basis for Host Manipulation 243 7.10 Dynamics of Viruses in Host Populations 244 7.10.1 Pathogenic Viruses Can Regulate Populations 244 7.10.2 Ecosystem Characteristics that Favor Virus Transmission 246 7.10.3 Climate Change and Insect-Virus Population Dynamics 247 7.11 Influence of Abiotic Factors on Viruses 248 7.11.1 Effect of Ultraviolet Light on Viruses 248 7.11.2 Seasonal Effects on Viruses 250 7.11.3 Effect of Temperature on Viruses 250 7.11.4 Humidity, Moisture and Precipitation 251 7.11.5 Effect of pH on Viruses 251 7.12 Biotic Factors that Interact with Virus Populations 253 7.12.1 Plant Phenology, Structure, and Nutritional Value 253 7.12.2 Phytochemical-Virus Interactions 253 7.12.3 Virus Interactions with Alternative Hosts 254 7.12.4 Competition and Facilitation in Virus Interactions with Other Organisms 255 7.12.4.1 Virus Interactions with Parasitoids 255 7.12.4.2 Virus Interactions with Other Pathogens 257 7.12.4.3 Virus Interactions with Microbiota 258 7.13 Conclusion 258 Acknowledgments 259 References 259 8 Bacteria 287 Trevor A. Jackson, Colin Berry and Maureen O'Callaghan 8.1 Introduction 287 8.2 Bacterial Pathogens and Associations with Insects 288 8.3 Pathogenicity and Virulence 294 8.3.1 Pathogenicity 295 8.3.2 Virulence 299 8.4 Disease Transmission 300 8.5 Survival in the Environment 301 8.5.1 Soil 302 8.5.2 Aqueous Environments 304 8.5.3 On the Phylloplane and In Planta 304 8.6 Population Dynamics: Epizootics and Enzootics 305 8.7 Evolution 308 8.8 Ecology Guiding Use of Bacterial Entomopathogens in Microbial Control 309 8.9 Conclusion 311 References 312 9 Fungi 327 Ann E. Hajek and Nicolai V. Meyling 9.1 Introduction 327 9.1.1 Fungal Systematics and Taxonomy 328 9.1.2 Relevance of Fungal Systematics and Taxonomy in Ecology 330 9.2 Fungal Biology and Pathology 331 9.2.1 Biology and Pathology of Major Groups of Fungal Pathogens 331 9.2.1.1 Entomophthoromycotina, Entomophthorales 331 9.2.1.2 Ascomycota, Hypocreales 333 9.2.2 Distribution Patterns and Habitat Associations of Invertebrate Pathogenic Fungi 334 9.2.2.1 Patterns of Fungal Abundance and Distribution: Insights from the Use of Molecular Markers 335 9.2.3 Factors Governing Diversity Patterns of Fungal Pathogens 337 9.3 Dynamics of Fungal Pathogens 338 9.3.1 Disease Transmission 338 9.3.2 Fungal Dispersal 341 9.3.3 Fungal Environmental Survival and Persistence 341 9.3.4 Impacts on Host Population Densities over Space and Time 342 9.4 Interactions between Fungal Pathogens and Host Individuals 344 9.4.1 Host Responses to Fungal Pathogens to Prevent or Cure Infections 344 9.5 Impact of Abiotic Factors on Infected Hosts and Pathogen Inocula 347 9.6 Impact of Biotic Factors on Pathogenic Fungi 349 9.6.1 Endophytic and Rhizosphere Associations of Invertebrate Fungal Pathogens 349 9.6.1.1 Natural Occurrence and Distribution of Invertebrate Pathogenic Fungi as Plant Associates 350 9.6.1.2 Experimental Inoculations of Plants with Entomopathogenic Fungi 351 9.6.1.3 Direct and Indirect Fungal Interactions with Insects and Plants 352 9.6.2 Interactions between Host Symbionts and Fungal Pathogens 353 9.6.3 Interactions between Fungal Pathogens and Other Natural Enemies 354 9.6.3.1 Interactions among Co ]infecting Pathogens 355 9.6.3.2 Interactions of Fungal Pathogens with Parasitoids and Predators 356 9.6.4 Mycoparasitism of Fungal Pathogens 357 9.7 Use of Pathogenic Fungi for Biological Control of Invertebrates 358 9.8 Conclusion 361 Acknowledgments 361 References 362 10 Microsporidia 379 Gernot Hoch and Leellen F. Solter 10.1 Introduction 379 10.1.1 Mechanisms of Infection 380 10.1.2 Microsporidian Life Cycles 381 10.1.3 Pathology 381 10.2 Host Population 383 10.2.1 Susceptibility to Microsporidiosis 383 10.2.2 Immune Response 383 10.2.3 Behavioral Response 384 10.3 Pathogen Population 385 10.3.1 Virulence of Microsporidian Pathogens 385 10.3.2 Host Specificity 386 10.3.2.1 Physiological vs. Ecological Host Specificity 386 10.3.2.2 Host Range 386 10.3.2.3 Alternate Hosts 387 10.3.2.4 Microsporidia Crossing the Invertebrate-Vertebrate Barrier 387 10.3.3 Persistence in the Environment 388 10.4 Transmission 390 10.4.1 Horizontal Transmission 390 10.4.1.1 Transmission from Living Hosts 390 10.4.1.2 Transmission after Host Death 392 10.4.1.3 Transmission by Parasitoid Vectors 393 10.4.1.4 Effects of Host Development and Host-Microsporidia Interactions on Transmission 393 10.4.2 Vertical Transmission 394 10.5 Epizootiology 397 10.5.1 Microsporidian Prevalence in Invertebrate Populations and Impact on Host Populations 397 10.5.2 Microsporidia in Cultured Insects 398 10.5.3 Microsporidia as Potential Biological Control Agents 399 References 400 11 Nematodes 415 David I. Shapiro-Ilan, Ivan Hiltpold and Edwin E. Lewis 11.1 Introduction 415 11.1.1 Diversity and Life Histories 415 11.1.2 EPN Distribution 420 11.2 Transmission 421 11.3 Host Population 421 11.4 Pathogen Population 422 11.4.1 Pathogenicity and Virulence 422 11.4.2 Persistence and Recycling 423 11.4.3 Dispersal and Foraging Behavior 423 11.5 Abiotic Environmental Factors 424 11.5.1 Soil Moisture 424 11.5.2 Soil Temperature 425 11.5.3 Soil Characteristics and Chemistry 425 11.5.4 Ultraviolet Light 426 11.6 Biotic Interactions 426 11.6.1 Interactions with Predators and Pathogens, Including Intraguild Competition 426 11.6.2 Cues Used in Host ]Finding and Navigation 427 11.6.3 Tri ]trophic Interactions (Plant, Insect, Nematode) 427 11.7 Applied Ecology and Aspects in Microbial Control 427 11.7.1 Production, Formulation, and Application 427 11.7.2 Approaches to Microbial Control 428 11.8 Conclusion 430 References 431 Section IV Applied Ecology of Invertebrate Pathogens 441 12 Modeling Insect Epizootics and their Population-Level Consequences 443 Bret D. Elderd 12.1 Introduction 443 12.2 The Pathogen and its Hosts 445 12.3 Modeling Disease Transmission: A Single Epizootic 447 12.3.1 Phenomenological and Mechanistic Models 448 12.4 Fitting Models to Data 450 12.4.1 Akaike Information Criterion 451 12.4.2 An Example of the AIC in Action 452 12.5 A Bayesian Approach 453 12.5.1 Fitting a Bayesian Model 454 12.5.2 An Example of the WAIC in Action 456 12.6 Long-Term Dynamics 457 12.6.1 Long ]Term Dynamics: Confronting Models with Data 458 12.6.2 Time ]Series Diagnostics 459 12.7 Modifying and Applying the Model 462 12.8 Conclusion 463 Acknowledgments 463 References 463 13 Leveraging the Ecology of Invertebrate Pathogens in Microbial Control 469 Surendra K. Dara, Tarryn A. Goble and David I. Shapiro-Ilan 13.1 Basics of Microbial Control and Approaches 469 13.1.1 Classical Microbial Control 469 13.1.2 Inoculative Release 471 13.1.3 Inundative Release 472 13.1.4 Conservation/Environmental Manipulation 472 13.2 Ecological Considerations 472 13.2.1 Host Specificity 472 13.2.2 Dispersal Ability 473 13.2.3 Virulence 473 13.2.4 Pathogen Density 473 13.2.5 Host ]Related Factors 474 13.2.6 Transmission 474 13.2.7 Environmental Persistence 475 13.3 Methods to Improve Microbial Control 476 13.3.1 Improving the Organism as a Microbial Control Agent 476 13.3.2 Improving Production Methods 477 13.3.3 Improving Formulation and Application Technologies 478 13.3.4 Improving the Environment 479 13.4 Incorporating Microbial Control into Integrated Pest-Management Systems 480 13.4.1 Regulatory Issues 480 13.4.2 Standalone vs. Integrated Approaches 481 13.4.3 Case Studies 481 13.4.3.1 Orchard Crops 482 13.4.3.2 Row Crops 482 13.4.3.3 Forests 483 13.4.3.4 Greenhouses 483 13.5 Conclusion 484 References 484 14 Prevention and Management of Diseases in Terrestrial Invertebrates 495 Jorgen Eilenberg and Annette Bruun Jensen 14.1 Introduction 495 14.1.1 Types of Production Facilities 496 14.1.2 Transmission of Insect Diseases in Production Facilities 499 14.2 Major uses of Insects and Mites in the Production and Transmission of Insect Pathogens within Production Systems 500 14.2.1 Pollination and Honey Production 500 14.2.2 Silk Production 507 14.2.3 Biological Control 509 14.2.4 Production of Insects for Food and Feed 512 14.3 Status of Diagnostic Services 516 14.4 Ensuring Production of Healthy Insects 516 14.5 Conclusion 519 Acknowledgments 519 References 519 15 Prevention and Management of Infectious Diseases in Aquatic Invertebrates 527 Jeffrey D. Shields 15.1 Scope 527 15.1.1 Myriad Pathogens Infect Aquatic Invertebrates 527 15.1.2 Overview of Disease Issues in Assessing Epidemics in Aquatic Invertebrates 531 15.2 Oyster Diseases 539 15.3 Crustacean Diseases 543 15.3.1 Outbreaks in Shrimp Aquaculture 544 15.3.2 Disease Management in Shrimp Aquaculture 548 15.3.2.1 Switching Species and Specific Pathogen ]Free (SPF) Stocks 549 15.3.2.2 Surveillance 550 15.3.2.3 Development of "Vaccines" 551 15.3.2.4 Ecological and Biological Control 551 15.3.3 Crayfish and Krebspest 552 15.3.4 Disease Emergence in Culture of the Chinese Mitten Crab 553 15.4 Crustacean Fisheries 554 15.4.1 Snow Crabs and Bitter Crab Disease 555 15.4.2 American Lobster and Epizootic Shell Disease 556 15.4.3 Spiny Lobsters and PaV1 559 15.5 Agencies for Disease Management 560 15.6 Conclusion 563 Acknowledgments 563 References 563 16 Ecology of Emerging Infectious Diseases of Invertebrates 587 Colleen A. Burge, Amanda Shore-Maggio and Natalie D. Rivlin 16.1 Introduction 587 16.2 Host-Pathogen Relationships and Anthropogenic Change 593 16.2.1 Ecological Context of Invertebrate Host-Pathogen Relationships 593 16.2.2 Anthropogenic Change and Disease Emergence 594 16.2.2.1 Host Factors 595 16.2.2.2 Pathogen Factors 595 16.2.2.3 Environment Factors 595 16.3 Case Studies of Invertebrate Disease Emergence 596 16.3.1 Molluscan Herpesvirus Infections of Bivalves 597 16.3.1.1 OsHV ]1 Infections of Pacific Oysters and Other Bivalves 598 16.3.2 Acute Hepatopancreatic Necrosis Disease of Shrimp 601 16.3.3 Emerging Densoviruses of Arthropods and Echinoderms 603 16.3.3.1 Acheta domesticus Densovirus 603 16.3.3.2 Sea Star ]Associated Densovirus 604 16.3.4 Emerging Pathogens of Pollinators 605 16.3.4.1 Varroa destructor and Deformed Wing Virus 606 16.3.4.2 Spillover and spread of Nosema ceranae 607 16.3.4.3 Multi ]stressors, Bee Mortalities and Control Measures 608 16.3.5 Emergent Coral Diseases 608 16.3.5.1 Black Band Disease 609 16.3.5.2 Acroporid Serratosis 610 16.3.5.3 Problems Facing Coral Disease Investigations 610 16.4 Conclusion 611 Acknowledgments 612 References 612 17 Conclusions and Future Directions 627 David Shapiro-Ilan and Ann E. Hajek 17.1 The Increasing Urgency of the Study of Invertebrate Pathogen Ecology 627 17.1.1 Food Security and the Role of Microbial Control 627 17.1.2 Conservation of Beneficial Organisms 628 17.2 The Future for Invasive and Native Invertebrate Pathogens 629 17.3 New Directions and Novel Tools for Studying Invertebrate Ecology 630 17.3.1 Molecular Tools 630 17.3.2 Chemical Ecology and Signaling 631 17.3.3 Exploring Other Novel Biotic Associations 632 17.3.4 Interdisciplinary Studies 633 References 634 Index 637

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