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Braconidae of the Middle East (Hymenoptera): Taxonomy, Distribution, Biology, and Biocontrol Benefits of Parasitoid Wasps provides the latest and most comprehensive knowledge of parasitoid wasp species. The highest concentration of these species is native to, or found in, the Middle East. This book covers the distribution of these species across the Palearctic region and their widespread global benefits as natural biocontrol agents. Each chapter covers a braconid subfamily, providing introductory information on its biology and phylogeny, total number of species, global distribution, and how they can be used to control pests and invasive insect species. In addition, this book discusses the importance of integrated pest management, specifically how Braconidae can be used for one-time or repeated introduction to natural enemies in suppressing pest populations. Finally, each chapter offers an illustrative key for readers to visualize and identify each species. - Offers braconid taxonomy, biology, phylogeny and host-parasitoid relationships - Provides illustrated identification keys to visualize and identify each species - Includes global distribution of braconids in other regions - Discusses braconid benefits as natural biocontrol agents

Forest Microbiology, Volume One: Tree Microbiome: Phyllosphere, Endosphere and Rhizosphere places an emphasis on the microbiology of leaves, needles, stems, roots, litter and soil. This comprehensive title is split into five sections, including the phyllosphere microbiome, endosphere, rhizosphere, archaea, viruses in forest ecosystem and microbiota of forest nurseries and tree pests, challenges and potentials. Microbial communities associated with various host trees and different tree tissues are compared, and generalists and specialists among tree-associated microbes are identified. In addition, biotic and abiotic factors determining the composition and the structure of forest tree microbial communities are presented, along with the concept of microbial'hubs.'Together, the book's editors have 25 years'worth of experience teaching and conducting research on forest microbiology, making this an essential read for any scientist interested in the forest microbiome. - Addresses the microbiology of living organs of forest trees including needles, leaves, stems and roots - Highlights the potential impact of microbiota inhabiting forest trees on the health and fitness of, and disease progression in, forest biomes - Focuses on the phyllosphere, endosphere and rhizosphere forest microbiome

Microbial Pesticides: Biological Resources, Production and Application provides a concise and accessible introduction on the history of microbial pesticides, their impact on global ecology, human society and economies, as well as a thorough and tangible description of the state-of-the-art technologies available for the production, application, limitations and long–term viability of these bio-products. Information is listed per biological group (i.e., virus, bacteria, fungi, protozoa, microsporidia and microbial metabolites), and is supported by sound scientific data. The book is copiously illustrated, with original pictures clarifying the most common techniques and protocols utilized in microbiological biocontrol technology. Finally, images of all biological active ingredients currently used in commercially produced formulations, as well as laboratory developed formulations, are illustrated and listed in detailed tables for prompt access. - Provides a concise and accessible introduction to the history of microbial pesticides and their impact on global ecology, human society and economies - Offers a thorough and tangible description of state-of-the-art technologies surrounding the production, application, limitations and long-term viability of bio-products - Reports current regulatory measures and protocols used to assess host range and collateral impact(s) of microbial formulations based on virus, bacteria, fungi, protozoa, microsporidia and microbial metabolites - Features lists by biological group (i.e., virus, bacteria, fungi, protozoa, microsporidia and microbial metabolites) - Links sound scientific data and concise, accessible language

Encyclopedia of Animal Behavior, Second Edition, Four Volume Set the latest update since the 2010 release, builds upon the solid foundation established in the first edition. Updated sections include Host-parasite interactions, Vertebrate social behavior, and the introduction of'overview essays'that boost the book's comprehensive detail. The structure for the work is modified to accommodate a better grouping of subjects. Some chapters have been reshuffled, with section headings combined or modified. - Represents a one-stop resource for scientifically reliable information on animal behavior - Provides comparative approaches, including the perspective of evolutionary biologists, physiologists, endocrinologists, neuroscientists and psychologists - Includes multimedia features in the online version that offer accessible tools to readers looking to deepen their understanding

Hormones, Brain and Behavior, Third Edition offers a state-of-the-art overview of hormonally-mediated behaviors, including an extensive discussion of the effects of hormones on insects, fish, amphibians, birds, rodents, and humans. Entries have been carefully designed to provide a valuable source of information for students and researchers in neuroendocrinology and those working in related areas, such as biology, psychology, psychiatry, and neurology. This third edition has been substantially restructured to include both foundational information and recent developments in the field. Continuing the emphasis on interdisciplinary research and practical applications, the book includes articles aligned in five main subject sections, with new chapters included on genetic and genomic techniques and clinical investigations. This reference provides unique treatment of all major vertebrate and invertebrate model systems with excellent opportunities for relating behavior to molecular genetics. The topics cover an unusual breadth (from molecules to ecophysiology), ranging from basic science to clinical research, making this reference of interest to a broad range of scientists in a variety of fields. - Comprehensive and updated coverage of a rapidly growing field of research - Unique treatment of all major vertebrate and invertebrate model systems with excellent opportunities for relating behavior to molecular genetics - Covers an unusual breadth of topics and subject fields, ranging from molecules to ecophysiology, and from basic science to clinical research - Ideal resource for interdisciplinary learning and understanding in the fields of hormones and behavior

Ecofriendly Pest Management for Food Security explores the broad range of opportunity and challenges afforded by Integrated Pest Management systems. The book focuses on the insect resistance that has developed as a result of pest control chemicals, and how new methods of environmentally complementary pest control can be used to suppress harmful organisms while protecting the soil, plants, and air around them. As the world's population continues its rapid increase, this book addresses the production of cereals, vegetables, fruits, and other foods and their subsequent demand increase. Traditional means of food crop production face proven limitations and increasing research is turning to alternative means of crop growth and protection. - Addresses environmentally focused pest control with specific attention to its role in food security and sustainability. - Includes a range of pest management methods, from natural enemies to biomolecules. - Written by experts with extensive real-world experience.

Ornamental trees, shrubs and flowers have always been extremely popular and in large demand. Whether in gardens or parks, common usage of alpines, bedding plants, cacti, cut flowers, house plants and pot plants, as well as herbaceous plants, ornamental grasses, shrubs and trees makes a definitive volume on their pests of essential value to entomologists and plant scientists. The fully revised and updated second edition of Pests of Ornamental Trees, Shrubs and Flowers follows up the successful previous edition with coverage of many new pests and highly detailed color photographs. The book opens with a review of the main features of insects, mites and other major pest groups. Each major order and family of pests is considered in turn, with details of their status, host range, world distribution, diagnostic features and biology. Descriptions of the characteristic damage caused are also given. - Contains coverage of more than 60 new pests and nearly 90 additional color photographs - Discusses principles of pest control of ornamental plants, followed by sections on the various pests

The Encyclopedia of Animal Behavior, Three Volume Set has engaged with great success the efforts of many of the best behavioral biologists of the 21st century. Section editors drawn from the most accomplished behavioral scientists of their generation have enrolled an international cast of highly respected thinkers and writers all of whom have taken great care and joy in illuminating every imaginable corner of animal behavior. This comprehensive work covers not only the usual topics such as communication, learning, sexual selection, navigation, and the history of the field, but also emerging topics in cognition, animal welfare, conservation, and applications of animal behavior. The large section on animal cognition brings together many of the world's experts on the subject to provide a comprehensive overview of this rapidly developing area. Chapters relating to animal welfare give a full view of behavioral interactions of humans with companion animals, farm animals, and animals in the wild. The key role of animal behavior in conservation biology receives broad attention, including chapters on topics such as the effects of noise pollution, captive breeding, and how the behavioral effects of parasites interacts with conservation issues. Animal behavior in environmental biology is highlighted in chapters on the effects of endocrine disruptors on behavior and a large number of chapters on key species, such as wolves, chimpanzees, hyenas and sharks. Clear, accessible writing complements a wealth of information for undergraduate college students about the essential concepts of animal behavior and the application of those concepts across the field. In-depth coverage of concepts, methods, and exemplar organisms serves the needs of graduate students and professionals in the field. From the use of behavior in assessing the welfare of pigs to the social behavior of insects, from animal empathy to bat brains, this authoritative reference, with its in-depth introductory articles, rich array of illustrations, interactive cross-referenced links, and numerous suggested readings, can guide the student or the professional to an expanded appreciation of the far-flung world of animal behavior. An invaluable tool for teaching and a source of enrichment and detail for any topic covered in an animal behavior course, the Encyclopedia of Animal Behavior is the definitive reference work in its field and will be for years to come. - Comprehensive work which covers the usual topics along with emerging areas of animal behavior - This encyclopedia contains clear, accessible writing and is well illustrated, including an online video, complimenting a wealth of information - As an online reference, this work will be subject to period updating. This ensures that the work always remains current - Contains in-depth introductions to the material that make each well-illustrated section come alive with the best the new content the discipline has to offer - Glossary includes a compendium of behavioral terms that form a succinct mosaic of virtually every concept and phenomenon related to animal behavior - Section editors, drawn from around the world, represent the best and the brightest among today's behavioral biologists and have recruited a broad range of internationally recognized experts - Editors-in-Chief are experienced scientists and writers who between them have authored or edited eight books and teach courses in animal behavior at their respective universities

Virus Taxonomy is a standard and comprehensive source for the classification of viruses, created by the International Committee of the Taxonomy of Viruses. The book includes eight taxonomic reports of the ICTV and provides comprehensive information on 3 taxonomic orders of viruses, 73 families, 9 subfamilies, 287 genera, and 1938 virus species. The book also features about 429 colored pictures and diagrams for more efficient learning. The text is divided into four parts, comprised of 16 chapters and presenting the following features: • Compiled data from numerous international experts about virus taxonomy and nomenclature • Organized information on over 6000 recognized viruses, illustrated with diagrams of genome organization and virus replication cycle • Data on the phylogenetic relationships among viruses of the same and different taxa • Discussion of the qualitative and quantitative relationships of virus sequences The book is a definitive reference for microbiologists, molecular biologists, research-level virologists, infectious disease specialists, and pharmaceutical researchers working on antiviral agents. Students and novices in taxonomy and nomenclature will also find this text useful.• The standard official ITCV reference for virus taxonomy and nomenclature, compiling data from 500 international experts • Covers over 6000 recognized viruses, organized by family with diagrams of genome organization and virus replication cycle• Provides data on the phylogenic relationships between viruses belonging to the same or different taxa• Now includes information about the qualitative and quantitative relationships between virus sequences

In recent years, progress in the field of virology has advanced at an unprecedented rate. Issues such as AIDS have brought the subject firmly into the public domain and its study is no longer confined solely to specialist groups.The Encyclopedia of Virology is the largest single reference source of current virological knowledge. It is also the first to bring together all aspects of the subject for a wide variety of readers. Unique in its use of concise'mini-review'articles, the material covers biological, molecular, and medical topics concerning viruses in animals, plants, bacteria, and insects. More general articles focus on the effects of viruses on the immune system, the role of viruses in disease, oncology, gene therapy, and evolution, plus a wide range of related topics. Drawing on the latest research, the editors have produced the definitive source for both specialist and general readers. Easy-to-use and meticulously organized, the Encyclopedia of Virology clarifies and illuminates one of the most complex areas of contemporary study. It will prove an invaluable addition to libraries, universities, medical and nursing schools, and research institutions around the world. The Second Edition has been thoroughly updated with approximately 40 new articles. This edition includes more illustrations and color plates in each volume. - Updated thoroughly with approximately 40 new articles - Presents more illustrations than the first edition, with color plates in each volume - Contains a complete subject index in each volume - Provides further reading lists at the end of each entry, allowing easy access to the primary literature - Extensive cross-referencing system links all related articles - Contains the most recent information of particular viruses described at the 7th International Committee on Taxonomy and Classification of Viruses - Provides the ability to search for entries alphabetically or via the taxonomical listings to access articles of different viruses

This comprehenisive text approaches the subject from an ecological/evolutionary biological perspective. The assumption is that one cannot study forest insects without understanding the dynamics of the relationship between an insect and its host plant. This relationship includes knowing what factors control forest insect populations such as food, food quality, tree vigor, host selection, and symbiotic relationships. The authors also discuss tree-injuring insects from the perspective of their influence on tree physiology and growth as well as economic and commercial effects. The book represents a'modern'approach to the topic of forest and shade tree insects; is well-illustrated; and includes a comprehensive primary reference list.

Advances in Virus Research

Biochemistry and Physiology of Nutrition, Volume II focuses on the processes, methods, and studies on nutrition. The book starts by discussing intracellular localization through histochemical methods of enzymes and vitamins; the structural changes in vitamin deficiency; and microbiology of digestion. Deficiencies in vitamins, A, C, D, E, B1, riboflavin, nicotinic acid, choline, biotin, and folic acid are noted. The book then focuses on microbiology of digestion, considering the establishment of microbial population in the alimentary tract, results of microbial digestion, antibiotics, and intestinal flora of man. The text also defines the nutrition system of worms, insects, and protozoa. The generation of ATP in terminal respiration and anaerobic glycolysis, as well as ATP's role in energy transfer, is noted. The discussions also focus on hydrolytic and phosphorylitic enzymes, such as carbohydrates, esterases, amidases, phosphatases, and phosporylases. Other topics covered are respiratory enzymes and coenzymes in which nucleotides, glucose diphosphate, diphosphoglyceric acid, and thiamine pyrophosphate are noted. The book notes the functions of iron compounds in the body, particularly in blood and tissues, and then touches on calcium and phosphorus metabolism. Given considerations are calcium and phosphorus in blood, skeletal calcium and phosphorus, and the factors affecting adsorption. A discussion also focuses on trace elements and the effects of protein, carbohydrates, fats, and vitamins in nutrition. The book is a vital source of data for readers interested in studying the elements, factors, processes, and methods involved in nutrition.

Insect physiology is currently undergoing a revolution with the increased application of molecular biological techniques to investigate the molecular mechanisms underlying the physiological responses to insect cells.Advances in Insect Physiology is commited to publishing high quality reviews on molecular biology and molecular genetics in areas where they provide an increased understanding of physiological processes in insects. Volume 26 of this classic seriescontinues to provide up-to-date reviews on topical subjects of importance to all invertebrate physiologists and neurobiologists and contains increased coverage on the molecular biology of insect physiology.

Advances in Insect Physiology

The Physiology of Insecta, Second Edition, Volume VI, is part of a multivolume treatise that brings together the known facts, the controversial material, as well as the many unresolved and unsettled problems of insect physiology. It features chapters written by the outstanding workers in each of a wide range of insect function areas. It is designed to meet a manifest need, which has arisen from the phenomenal increase in research activity on insects, for an authoritative, comprehensive reference work in insect physiology. The book begins with a discussion of the physiology of insect resistance to insecticides. This is followed by separate chapters on the structure and formation of the integument in insects; the physical properties and chemical components of the insect cuticle; and permeability of the insect cuticle. Subsequent chapters cover the organization and evolution of the insect tracheal system; aquatic respiration in insects; and factors affecting insect respiratory rates.

The Proteins: Composition, Structure, and Function, Second Edition, Volume IV covers the significant developments in understanding the relationships between the composition, structure, and function of proteins. This three-chapter volume deals first with the genetic determination of protein structure and with the effects of mutational alteration on the structure and function of proteins. A highly relevant aspect of this topic is the change in protein structure during evolution and cell development. The second chapter describes the basic structure of several glycoproteins, such as orosomucoid, egg albumin, and submaxillary gland glycoprotein. The third chapter highlights the features of composition and arrangement of the group protein, which impart the capacity to perform their physical function. This book is of value to organic chemists, biochemists, and researchers in the protein-related fields.

Vectors of Plant Pathogens is a collection of papers that discusses the interrelationship of plant pathogens with their vectors. This collection deals with the numerous vector groups associated with plant pathogens. One paper describes the biology, feeding behavior and distribution of aphids, leafhoppers, plant hoppers, mealy bugs, whiteflies, psyllids, membracids. Another paper addresses the virus transmission characteristics of the mealy bugs during preliminary fasting or feeding, acquisition access time, post-acquisition fasting or feeding, and the inoculation access time. Other papers also discuss the involvement of insects in transmitting bacterial and fungal pathogens; the authors list unresolved issues such as the role of insects in overwintering of bacterial pathogens or the association of the fungus with a particular vector. One author describes some suspected fungi transmission such as the pea stem necrosis virus, red clover necrotic mosaic virus, and the tomato bushy stunt virus. Another paper examines the fate of plant viruses in mite vectors and convectors particularly the viruses found in wheat, barley, or brome grass. Agriculturists, botanists, and researchers in the field of botany, conservation, and plant genealogy will find this book useful.

FROM THE PREFACE: The abundance of insects can change dramatically from generation to generation; these generational changes may occur within a growing season or over a period of years. Such extraordinary density changes or'outbreaks'may be abrupt and ostensibly random, or population peaks may occur in a more or less cyclic fashion....The goal of this book is to update and advance current thinking on the phenomenon of insect outbreaks. The contributors have reviewed relevant literature in order to generate a synthesis providing new concepts and important alternatives for future research. More importantly, they have presented new ideas or syntheses that will stimulate advances in thinking and experimentation.

Conformation in Fibrous Proteins: And Related Synthetic Polypeptides provides a comprehensive and critical account of conformation in fibrous proteins and synthetic polypeptides in the solid state. Physical methods of determining conformation are discussed, and relevant results from studies of synthetic polypeptides and fibrous proteins are presented. Comprised of 18 chapters divided into three sections, this book opens with a discussion on the theory and technique of X-ray diffraction applicable to the study of conformation in fibrous materials, along with electron diffraction, electron microscopy, optical diffraction, and infrared spectrophotometry. The procedures used for conformation analysis and prediction are also outlined. The following chapters consider optimization techniques and other methods for elucidating conformation in fibrous proteins and synthetic polypeptides; the use of synthetic polypeptides as models of fibrous proteins; and conformation in fibrous proteins such as silks, collagens, myofibrillar proteins, and keratins. This monograph will be a valuable source of information for molecular biologists.

Insecticide Mode of Action presents significant research on the biological activity of insecticides. The book is organized into three sections encompassing 13 chapters that summarize three major groups of insecticides, including neurotoxic, formamidine, and developmental insecticides. The first section of the book presents studies on groups of conventional neurotoxic insecticides: chlorinated hydrocarbons, pyrethroids, carbamates, and organophosphorus chemicals. This text discusses their structure, poisoning property, structure-activity relationships, and stereoselectivity. The subsequent section discusses the biochemical, biological, and neurotoxic actions of formamidines, a group of pesticides that exhibit an unusual spectrum of activity. Several modes of action of pharmacological significance as well as some important behavioral effects are included in this section. The third section addresses groups of insecticides that affect insect growth and development. Such chemicals typically demonstrate marked selectivity and represent more sophisticated strategies in the chemical control of insect pests. This book is of value to researchers, teachers, and regulatory personnel concerned with the biological activity of insecticides.

Insect Sex Pheromones is a revised and expanded edition of the book''Insect Sex Attractants''and covers greater discoveries in the field of sex pheromones. It is discovered that many sex pheromones are sexually excitatory rather than attractive. This discovery prompted the substitution of the more accurate and encompassing term''pheromones''for the term''attractants''in the title of this edition. Composed of 13 chapters, this book has chapters that cover the occurrence in female and production in male of sex pheromones in various insect species. The insect orders considered include Acarina, Orthoptera, Hemiptera, Homoptera, Diptera, Isoptera, Neuroptera, Siphonaptera, Coleoptera, Hymenoptera, Lepidoptera, Trichoptera, and Mecoptera. The following chapter discusses pheromones produced by one sex that lure to assemble for mating. This book goes on discussing the anatomy and physiology of scent glands of male and female insects; the attractant perception mechanism; and the behavioral and electrophysiological responses of insects to sex pheromones. Other chapters are devoted to the influence of several factors on the presence of chemical sex attraction or excitation in any insect. The concluding chapters deal with the collection, isolation, identification, synthesis, and analysis of sex pheromones. This book will greatly appeal to research and economic entomologists, insect physiologists, chemists, and ecologists.

Social Insects, Volume II is essentially a continuation and review of topics covered in Volume I. The main focus of this volume is on the systematic of eusocial hymenoptera and the closely associated realms of presocial insects and social non-insectan arthropods. Consisting of five major chapters, this volume starts with the chapter on the enemies and defense mechanisms of termites. Several mechanisms are discussed in this chapter, such as defense by the nest, workers, and soldiers. Chapter 3 focuses on presocial insects and a comparison of parental care without nests and based on nests. Chapter 4 discusses the sociality of Arachnida and emphasizes the patterns and evolution of sociality in Arachnida, particularly spiders. Two chapters discuss the social hymenoptera, including its defensive mechanisms and its systematics. This volume will be of great help to students and professionals in the field of entomology, biology, and zoology.

Advances in Virus Research

International Review of Forestry Research, Volume 1 is a collection of reviews and summaries of world literature concerning defined problem areas in forestry research. This book is composed of seven chapters, and starts with a general survey of the historical development of international forestry research, specifically in Central Europe, since the origin of forest management and of forestry as a science lies on it. This historical development includes historical methods in the practice of forest science, human influences, economics, culture, and laws. The subsequent chapters describe the methods for improvement of forest growth on swamps, the concept of nutrient requirement in forestry, and the methods for determining nutrient requirements of forest trees and stands. These topics are followed by discussions on the biological and environmental aspects of forest site appraisal systems; the anatomy, chemistry, and physiology of bark; and advances in the physiology and biochemistry of tree seeds during maturation, storage, and germination. The concluding chapter considers the development of harmonious control in agricultural, horticultural, and forestry crops, as well as the human influence on regulation and determination of insect populations. This book will prove useful to forest scientists, research workers, teachers, advanced students, administrators, economists, and forest and land managers.

Insect Pathology: An Advanced Treatise, Volume 2 reviews the significant progress that has been made in insect pathology, as well as the major research trends in the field. This book is concerned with bacterial, fungus, protozoan, and parasitic diseases, along with the epizootiology of infectious diseases, diagnosis, methodology, and microbial control. Organized into 17 chapters, this volume begins with a brief consideration of the taxonomy of entomogenous bacteria, including common problems of bacterial taxonomy as a whole. The book then discusses diseases caused by certain spore-forming bacteria, such as clostridial pathogens and pathogens of the genus Bacillus. The text also explains milky diseases and their development within the insect host; nonsporulating bacterial pathogens that cause diseases in insects; and infections caused by Coelomomyces and Entomophthorales. The book also introduces the reader to insect diseases caused by hyphomycetous Fungi Imperfecti (Deuteromycetes) not usually associated in nature with a perfect stage, diseases associated with Cordyceps, and infections attributed to parasites belonging to the group Sporozoa. This book is essential reading for entomologists.

Insect Pathology: An Advanced Treatise, Volume 1 reviews some of the principal developments in insect pathology as well as the major research trends in the field. This book is concerned with non-infectious diseases, microbiota of healthy insects, immunity, physiopathology, predisposition to disease, virus diseases, and rickettsial diseases. Organized into 17 chapters, this volume begins with an overview of the nature and scope of insect pathology as a distinct branch of entomology, as well as the challenges involved in the study of insect diseases and some of the principal applications of insect pathology in agriculture, medicine, and general biology. The next chapters introduce the reader to the physical factors that cause injury/harm to insects; the pathological changes induced in insects by chemicals used as insecticides; and insect nutrition and nutritional diseases. The book discusses other diseases in insects, including genetic diseases, tumors, granuloses, rickettsiae, and rickettsioses. This book is a valuable resource for entomologists.

The Theory and Practice of Biological Control covers conventional biological control achievement in the major crop types and in public health problems. Composed of five sections encompassing 28 chapters, this book discusses the basic information concerning developments in other biologically based alternatives to chemical pesticides. The first two sections discuss the philosophy, theory, scope, history, and the biological and ecological bases of biological control. These sections also deal with the impact of predators and the host relationships of parasitoids and pathogens. The following section presents the methodological aspects of biological control. Discussions on the variability of natural enemies as encountered in biological control work; the fitness of individuals and populations; the ways fitness is being or can be influenced by importation procedures; and the ability of imported natural enemies to adapt to the new environment are included. The fourth section outlines the accomplishments of conventional biological control in various types of crops, forests, and public health areas. Lastly, the various components of integrated pest control other than conventional biological control that forms the essential ways used in the integrated control approach are covered in the last section of the book. This book is an ideal source for plant pathologists and researchers, microbiologists, parasitologists, and public health professionals.

Variable Plants and Herbivores in Natural and Managed Systems examines individual, population, species, and community responses of herbivores to plant variation, with emphasis on insects, fungi, bacteria, and viruses. It is divided into five parts encompassing 18 chapters that discuss variability as a mechanism of defense used by plants against their parasites and the effects of variability on herbivores at several different levels of complexity. After a brief discussion on plant-herbivore interactions, the first part of this book considers sources of within-plant variation and effects on the distribution and abundance of herbivores. Part II examines interplant variation, the co-evolutionary problems it poses for herbivores, and the ecological and evolutionary responses of these animals. It discusses the effects of host-plant variability on the fitness of sedentary herbivorous insects. Part III discusses the role of host variability in the evolution of feeding specialization, genetic differentiation, and race formation. The importance of host variation to the organization of herbivore communities and the manipulation of host-plant variability for the management of herbivore pest populations are presented in the remaining parts. This book will be helpful to agriculturists, silviculturists, biologists, and researchers who wish to expand their knowledge in dynamics of plant-herbivore relationships.

Advances in Morphogenesis, Volume 6 considers the significant advances in various aspects of morphogenesis. This volume is composed of seven chapters that specifically cover the biological, morphological, and embryological aspects of cell growth and development. The opening chapter deals with the classification, progression, genetic aspects, and experimental induction of teratomas. The next chapter focuses on insect morphogenesis, its formation of surface patterns, the gradient organization of the epidermis, and the three-dimensional patterns resulting from cycles of activity in time. A chapter discusses the factors that control the initiation of hemoglobin synthesis, with a particular emphasis on studies of the chick and amphibian embryo. These topics are followed by surveys on heteroblastic development in vascular plants, the ultrastructure of the nucleus, and the experimental alterations of the developmental cytogenetic mechanisms. The final chapter examines the epigenetic aspect of developments in sexual organogenesis. This book is directed primarily toward developmental biologists.

Exotic Plant Pests and North American Agriculture examines the threat posed by exotic pests introduced to North American agriculture. It considers the impact of introduced pests on humans, and it highlights the need for intensified research efforts and international cooperation to prevent further introductions. Organized into 17 chapters plus an epilogue, this volume begins with a historical overview of pest introductions, including insects and mites, and possible introductions in the future. It then discusses the impact of introduced weeds in North America; ecology and genetics of exotic species; how to detect and stop pest introductions; and research on exotic insects, plant pathogens, and weeds. The reader is also introduced to the use of exotic natural enemies for biological control of exotic pests, prediction of potential epidemics caused by exotic pests, insurance against exotic plant pathogens, and international cooperation on controlling exotic pests. Scientists, plant pathologists, ecologists, and those working in academics, government research laboratories, and regulatory agencies will benefit from reading this book.