Download or read book Recent Developments in Insect Neurohormones written by M. Raabe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most striking fact revealed by investigations of insect neurohormones is that insects are as well supplied with neurohormones as mammals, since neurohor mones regulate not only the functioning of the endocrine glands, prothoracic gland, and corpora allata, but also most physiological processes. Our knowledge of neurohormones developed originally from anat omocytological investigations and experimental studies. Today, accurate bio assays have been devised for studying both in vivo and in vitro physiological processes, and RIA determination has yielded knowledge of titer modifications of humoral factors. Much is also known about neurohormone purification, and several neurohormones have even been identified in different species. Immunocytochemistry has made it possible to demonstrate in their origin and release sites the presence of insect neurohormones whose structure has been elucidated. Moreover, the presence of vertebrate and invertebrate neuropeptides has been demonstrated in insects. As regards biogenic amines, methods of detection have been greatly refined and it is now possible to identify the cell bodies and axons of the main biogenic amines. Other new methods, such as cobalt chloride impregnation or Lucifer yellow staining, have revealed the axonal pathways and the location of particular neurons. The mechanisms of action of neurohormones have been investigated in several cases and the results of these investigations will be related in the chapters which follow.
Download or read book Insect Neurohormones written by Marie Raabe and published by Springer. This book was released on 1982-08 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discovery of insect neurohormones dates from the earliest experimental in vestigations in insect endocrines, and the matter cannot be discussed without evoking the names of its pioneers-Kopec, Wigglesworth, Fraenkel. Whereas the experiments demonstrated the existence of the first known neurohormones, the formulation of the concept of neurosecretion was of fundamental importance to further progress, and tribute must be paid to Ernst and Berta Scharrer. The recent proliferation of investigations into insect neurohormones has cre ated the need for an overall review of the data. Our knowledge of the subject is voluminous, and the evidence clearly demonstrates that neurohormones playa part in most insect regulatory processes. This book analyzes and synthesizes the data, starting from neurosecretion (i.e., source sites and release modes of neurohormones) and continuing through the various functions in which neurohormones have been shown to be involved: endocrine gland activity; diapause; reproduction; visceral muscle functioning; color change; behavior; water and ion balance; protein, sugar, and lipid metabo lism; and tanning and other processes occurring at the cuticle level. In each chapter, besides the experimental information, technical procedures as well as recent information concerning purification of the particular neurohor mones and their mode of action are reported. Numerous exhaustive tables allow the reader to get an overview of the matter while the major findings of the mo ment are presented in the conclusion of each chapter.
Download or read book Insect Hormones written by H. Frederik Nijhout and published by Princeton University Press. This book was released on 2021-02-09 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although insect endocrinology is one of the oldest and most active branches of insect physiology, its classic general texts are long out of date, while its abundant primary literature provides little biological context in which to make sense of the discipline as a whole. In this book, H. Frederik Nijhout's goal is to provide a complete, concise, and up-to-date source for students and nonspecialists seeking an overview of the dynamic and wide-ranging science that insect endocrinology has become since its beginnings nearly eighty years ago in the study of insect metamorphosis. The author offers a comprehensive survey of the many roles that hormones play in the biology of insects. Among the topics discussed are the control of molting, metamorphosis, reproduction, caste determination in social insects, diapause, migration, carbohydrate and lipid metabolism, diuresis, and behavior. The account features a summary of the most current and accurate thinking on the complex roles of ecdysone and juvenile hormone in the control of metamorphosis, a process still misunderstood and misrepresented in biological textbooks and many professional reviews. Throughout, the book's emphasis is on the biology of the organism and the ways in which physiological and developmental regulatory mechanisms are integrated into the insect's life cycle.
Download or read book Insect Hormones written by Gerald Litwack and published by Gulf Professional Publishing. This book was released on 2005-12-05 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insect biochemistry and molecular genetics have become enormously important sciences. Molecular genetics of drosophila has paced mammalian genetics and has facilitated many advances in mammalian genetics. Moreover, many life-threatening diseases for man are now carried chiefly by insects and our increasing knowledge of the basic science of insects may help to control these diseases. There is no more important facet of insect science than insect hormones, the agents that allow for communication between cells and tissues. This volume updates important areas of this subject, namely: hormonal control of ecdysis; ecdysone receptors in agriculture and medicine; molecular structure of the receptor ligand binding site of ecdysone; a molecular genetic approach to the biosynthesis of the molting hormone; non-steroidal ecdysone agonists; molecular actions of juvenile hormone in drosophila, and insect neuropeptide receptors.
Download or read book Insect Hormones and Bioanalogues written by K. Slama and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of organic insecticides in the agrotechnical praxis resulted in a great and unexpected progress in the control of insect pests, and was of a great economical value all over the world. The widespread application of these agents, however, is also accompanied by negative effects. The principal drawback of classical insecticides consists in the lack of their specificity, the useful insects being killed together with insect pests. Furthermore, the broad-scale application for many years led to the formation of more resistant insect strains requiring higher and higher doses of insecticides. The residues of the mostly used chlorinated compounds accumulate in human and animal foods producing directly or indirectly harmful effects in human sub jects. The critical situation led in many developed countries to the restriction in the usage of some types of classical insecticides. Under these circumstances it is quite natural that novel routes for the control of insect pests are investigated. In this connection, attention has been paid especially to the insect endocrinology and insect hormones which regulate the admirable and in many regards specific development from the egg to the adult insect. The recent successful discoveries in this field are thus in close relation to the practical requirements. Isolation and identification of moulting hor mones and juvenile-hormone-like naturally occurring substances not only made possible an exact investigation of their physiological effects but also stimulated the chemical research.
Download or read book Neurohormonal Techniques in Insects written by T.A. Miller and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insects as a group occupy a middle ground in the biosphere between bac teria and viruses at one extreme, amphibians and mammals at the other. The size and general nature of insects present special problems to the student of entomology. For example, many commercially available in struments are geared to measure in grams, while the forces commonly en countered in studying insects are in the milligram range. Therefore, tech the study of insects or in those fields concerned with niques developed in the control of insect pests are often unique. Methods for measuring things are common to all sciences. Advances sometimes depend more on how something was done than on what was measured; indeed a given field often progresses from one technique to another as new methods are discovered, developed, and modified. Just as often, some of these techniques find their way into the classroom when the problems involved have been sufficiently ironed out to permit students to master the manipulations in a few laboratory periods. Many specialized techniques are confined to one specific research labo ratory. Although methods may be considered commonplace where they are used, in another context even the simplest procedures may save con siderable time. It is the purpose of this series (1) to report new develop ments in methodology, (2) to reveal sources of groups who have dealt with and solved particular entomological problems, and (3) to describe ex periments which might be applicable for use in biology laboratory courses.
Download or read book Hormones and Metabolism in Insect Stress written by Jelisaveta Ivanovic and published by CRC Press. This book was released on 2018-01-31 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the effects of both natural (e.g., temperature, humidity, and lack of food) and man-induced stressors (e.g., pollution) on insects. Insect neurohormones and metabolism are emphasized, although all aspects of insect biology are examined. The role of ecdysteroids and juvenile hormones in response to thermal and other stressors is featured, and population studies in insect stress are presented. Entomologists, ecologists, ecophysiologists, physiologists, applied entomologists and others will find Hormones and Metabolism in Insect Stress an important reference resource.
Download or read book Insect Neurohormones written by Marie Raabe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discovery of insect neurohormones dates from the earliest experimental in vestigations in insect endocrines, and the matter cannot be discussed without evoking the names of its pioneers-Kopec, Wigglesworth, Fraenkel. Whereas the experiments demonstrated the existence of the first known neurohormones, the formulation of the concept of neurosecretion was of fundamental importance to further progress, and tribute must be paid to Ernst and Berta Scharrer. The recent proliferation of investigations into insect neurohormones has cre ated the need for an overall review of the data. Our knowledge of the subject is voluminous, and the evidence clearly demonstrates that neurohormones playa part in most insect regulatory processes. This book analyzes and synthesizes the data, starting from neurosecretion (i.e., source sites and release modes of neurohormones) and continuing through the various functions in which neurohormones have been shown to be involved: endocrine gland activity; diapause; reproduction; visceral muscle functioning; color change; behavior; water and ion balance; protein, sugar, and lipid metabo lism; and tanning and other processes occurring at the cuticle level. In each chapter, besides the experimental information, technical procedures as well as recent information concerning purification of the particular neurohor mones and their mode of action are reported. Numerous exhaustive tables allow the reader to get an overview of the matter while the major findings of the mo ment are presented in the conclusion of each chapter.
Download or read book Insect Neuroendocrines written by V.B. Awasthi and published by Scientific Publishers. This book was released on 2005-04-01 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the author has been to present an account of the neuroendocrine system of insects, the super importance of which is well established, and also to provide information as far as possible directly, through the ultrastructural illustrations. Besides, an account of some of the hormonally controlled phenomena of vital significance is given. It is hoped that the theoretical account, and a large number of ultrastructural illustrations of some of the prominent pioneer authors included in the book, will provide ample information to the post graduate students and research scholars of insect neuroendocrinology as well as to those engaged in carrying out researches on comparative endocrinology, insect ethology, cell biology and developmental biology in various universities and acquaint them well with almost all the components of the neuroendocrine system in the active, inactive and various developmental stages, alongwith ultrastructural changes occurring in the cells and their organelles, that are associated with specific functions. I do hope that the book will stimulate the readers and serve as a "text book cum basic research monograph'' on the subject. The book also contains a list of selected bibliography for a detailed study.
Download or read book Insect Endocrinology written by Lawrence I. Gilbert and published by Academic Press. This book was released on 2011-07-26 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: The publication of the extensive seven-volume work Comprehensive Molecular Insect Science provided a complete reference encompassing important developments and achievements in modern insect science. One of the most swiftly moving areas in entomological and comparative research is endocrinology, and this volume, Insect Endocrinology, is designed for those who desire a comprehensive yet concise work on important aspects of this topic. Because this area has moved quickly since the original publication, articles in this new volume are revised, highlighting developments in the related area since its original publication. Insect Endocrinology covers the mechanism of action of insect hormones during growth and metamorphosis as well as the role of insect hormones in reproduction, diapause and the regulation of metabolism. Contents include articles on the juvenile hormones, circadian organization of the endocrine system, ecdysteroid chemistry and biochemistry, as well as new chapters on insulin-like peptides and the peptide hormone Bursicon. This volume will be of great value to senior investigators, graduate students, post-doctoral fellows and advanced undergraduate research students. It can also be used as a reference for graduate courses and seminars on the topic. Chapters will also be valuable to the applied biologist or entomologist, providing the requisite understanding necessary for probing the more applied research areas. - Articles selected by the known and respected editor-in-chief of the original major reference work, Comprehensive Molecular Insect Science - Newly revised contributions bring together the latest research in the quickly moving field of insect endocrinology - Review of the literature of the past five years is now included, as well as full use of data arising from the application of molecular technologies wherever appropriate
Download or read book Insect Hormones written by Sir Vincent Brian Wigglesworth and published by . This book was released on 1970 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Insect Hormones written by Gerald Litwack and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insect biochemistry and molecular genetics have become enormously important sciences. Molecular genetics of drosophila has paced mammalian genetics and has facilitated many advances in mammalian genetics. Moreover, many life-threatening diseases for man are now carried chiefly by insects and our increasing knowledge of the basic science of insects may help to control these diseases. There is no more important facet of insect science than insect hormones, the agents that allow for communication between cells and tissues. This volume updates important areas of this subject, namely: hormonal control of ecdysis; ecdysone receptors in agriculture and medicine; molecular structure of the receptor ligand binding site of ecdysone; a molecular genetic approach to the biosynthesis of the molting hormone; non-steroidal ecdysone agonists; molecular actions of juvenile hormone in drosophila, and insect neuropeptide receptors.
Download or read book Ecofriendly Pest Management for Food Security written by Omkar Ph.D. and published by Academic Press. This book was released on 2016-02-03 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The Role of Peptide Hormones in Insect Physiology Biochemistry and Molecular Biology Processes written by Dov Borovsky and published by Frontiers Media SA. This book was released on 2021-03-22 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Insect Hormones written by H. Frederik Nijhout and published by Princeton University Press. This book was released on 1998-02-22 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although insect endocrinology is one of the oldest and most active branches of insect physiology, its classic general texts are long out of date, while its abundant primary literature provides little biological context in which to make sense of the discipline as a whole. In this book, H. Frederik Nijhout's goal is to provide a complete, concise, and up-to-date source for students and nonspecialists seeking an overview of the dynamic and wide-ranging science that insect endocrinology has become since its beginnings nearly eighty years ago in the study of insect metamorphosis. The author offers a comprehensive survey of the many roles that hormones play in the biology of insects. Among the topics discussed are the control of molting, metamorphosis, reproduction, caste determination in social insects, diapause, migration, carbohydrate and lipid metabolism, diuresis, and behavior. The account features a summary of the most current and accurate thinking on the complex roles of ecdysone and juvenile hormone in the control of metamorphosis, a process still misunderstood and misrepresented in biological textbooks and many professional reviews. Throughout, the book's emphasis is on the biology of the organism and the ways in which physiological and developmental regulatory mechanisms are integrated into the insect's life cycle.
Download or read book Insect Hormones Advances in Research and Application 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insect Hormones: Advances in Research and Application: 2011 Edition is a ScholarlyPaper™ that delivers timely, authoritative, and intensively focused information about Insect Hormones in a compact format. The editors have built Insect Hormones: Advances in Research and Application: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Insect Hormones in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Insect Hormones: Advances in Research and Application: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Insect Juvenile Hormones written by American Chemical Society. Division of Pesticide Chemistry and published by . This book was released on 1972 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological aspects; Insect hormones and insect control; Theoretical aspects of the action of juvenile hormone; Regulation of messenger RNA translation mediated by juvenile hormone; Biological activity and bio assay of juvenile hormone analogs; Juvenile hormone and insect embryonic development: its potential role as an ovicide; Field experiences with juvenile hormone mimics; Biochemical aspects; Metabolism of cecropia juvenile hormone in insect and in mammals; Preliminary chromatographic studies on the metabolites and photodecomposition products of the juvenoid: Chemical aspects; The origin of juvenile hormone chemistry; Terpenoid rontes to the synthesis of homojuvenates.
