Download or read book Atypical Secondary Compounds in the Family Cruciferae written by Barbara Fellows Usher and published by . This book was released on 1979 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phytochemical Diversity and Redundancy in Ecological Interactions written by John T. Romeo and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diversity within and among living organisms is both a biological impera tive and a biological conundrum. Phenotypic and genotypic diversity is the critical currency ofecological interactions and the evolution of life. Thus, it is not unexpected to find vast phytochemical diversity among plants. However, among the most compelling questions which arise among those interested in ecological phytochemistry is the extent, nature, and reasons for the diversity of chemieals in plants. The idea that natural products (secondary metabolites) are accidents of metabolism and have no biological function is an old one which has resurfaced recently under a new term "redundancy. " Redundancy in the broader sense can be viewed as duplication of effort. The co-occurrence of several classes of phytochemieals in a given plant may be redundancy. Is there unnecessary duplication of chemical defense systems and ifso, why? What selective forces have produced this result? On the other hand, why does the same compound often have multiple functions? At a symposium of the Phytochemical Society of North America held in August 1995, in Sault Ste. Marie, Ontario, Canada, the topic "Phytochernical Redundancy in Ecological Interactions" was discussed. The chapters in this volume are based on that symposium. They both stimulate thought and provide some working hypotheses for future research. It is being increasingly recognized that functional diversity and multiplicity of function of natural products is the norm rather than the exception.
Download or read book Chemical Mediation of Coevolution written by Kevin C. Spencer and published by Elsevier. This book was released on 2013-10-22 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical Mediation of Coevolution explores the degree to which chemicals are the currency of information exchange in coevolved systems; it also reexamines existing concepts of coevolution through interpretation of chemical parameters. The contents of this volume are based on the ""Chemical Mediation of Coevolution"" symposium held on 14-15 August 1985 as part of the 36th annual AIBS meeting at the University of Florida. The volume contains 18 chapters majority of which address plant-chemical-insect systems. Explorations are also made into mammalian systems and into insect mimicry, as that process derives ultimately from herbivory upon plants. The data thus presented will specifically address chemistry as a factor in the establishment and maintenance of coevolution, and test coevolutionary concepts for their pertinence to chemically mediated systems. It is hoped that this collected work will provide an impetus for careful reconsideration of the possible roles played by chemistry in the establishment, maintenance, and fate of coevolutionary relationships.
Download or read book Methods in Chemical Ecology Volume 2 written by Kenneth F. Haynes and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Identification of chemicals that affect the naturally occurring interactions be tween organisms requires sophisticated chemical techniques, such as those docu mented in volume 1, in combination with effective bioassays. Without an effective bioassay, the identification becomes akin to looking for a needle in a haystack, but without any idea of what a needle looks like. To a large extent serniochemical identifications must be driven by bioassays. The design of bioassays for use in chemical ecology is governed by the sometimes conflicting objectives of ecological relevance and the need for simplic ity. Bioassay design should be based on observations of the interactions between organisms in their natural context, a theme that appears throughout this volume. As a result, this volume is as much about ecology and behavior as it is about specific methods. It is impossible to design a relevant bioassay, whether it is simple or complex, without understanding at least the fundamentals of how chemical cues or signals mediate the interaction in nature. Thus, the development of bioassay methods must be driven by an understanding of ecology and a knowledge of the natural history of the organisms under study. Given such an understanding, it is often possible to design assays that are both ecologically relevant and easy to perform.
Download or read book Potential New Crops Lesquerella Lunaria Sapium Sebiferum and Stokesia January 1970 November 1988 written by Jerry Rafats and published by . This book was released on 1989 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Aspects of Insect Plant Associations written by S. Ahmed and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thanks to the meticulous and enthusiastic work of insect collectors and taxonomists over the past hundred years and more, we have today a large amount of information on the feeding habits and life styles of sev eral hundred thousands of insect species. Insects that feed on plants during at least one of their life stages constitute about half of the three-quarters of a million described species. Their numbers both in terms of species and individuals together with their small but macroscopic sizes makes the insect-plant biological interface perhaps the most conspicuous, diverse and largest assemblage of intimate interspecies interactions in existence. It is also perhaps the most important biological interface be cause of the plants' role as primary producers upon which all other forms of earthly life depend, thereby bringing herbivorous insects occasionally into direct competition with human food and fiber production. Early enthusiasm revealed many remarkable specializations and associ ations between insects and plants, and occasionally assigned chemical me diators for them. However, the modern practices of large scale crop pro tection by synthetic pesticides and their attendant problems, particularly with resistance in "pests" and destruction of natural enemies, have been in large measure responsible for drawing our attention to the mechanisms whereby plants control insect populations and insects adapt to the plants' defenses. These practices have also brought home the importance of chemical mediators in practically all aspects of insect activities and, in parti cular, the importance of plant allelochemicals in maintaining and balan cing insect-plant associations.
Download or read book Boyce Thompson Institute Collected Research Papers written by and published by . This book was released on 1923 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 10th International Symposium on Insect Plant Relationships written by Stephen J. Simpson and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past 40 years, the SIP meetings have played a central role in the development of the field of insect-plant relationships, providing both a show-case for current research as well as a forum for the airing and development of influential new ideas. The 10th symposium, held 4-10 July 1998, in Oxford, followed that tradition. The present volume includes a representative selection of fully refereed papers from the meeting, plus a listing of the titles of all presentations. The volume includes reviews of major areas within the subject, along with detailed experimental studies. Topics covered include central neural and chemosensory bases of host plant recognition, integrative studies of insect behaviour, tritrophic interactions, plant defences, insect life histories, plant growth responses, microbial partners in insect-plant associations, and genetic bases of host plant associations. The book provides a key source for students and research workers in the field of insect-plant relationships.
Download or read book Insect Plant Interactions 1990 written by Elizabeth A. Bernays and published by CRC Press. This book was released on 2017-11-22 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insect-Plant Interactions is a series devoted to reviews across the breadth of the topic from cellular mechanisms to ecology and evolution. Articles are selected from areas of particular current interest or subjects that would especially benefit from a new review. It is hoped that the interdisciplinary selection in each volume will help readers to enter new fields of insect-plant interactions. Volume III contains six contrasting articles.
Download or read book Insect Plant Interactions written by James R. Miller and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authoritative overviews in this volume provide a wealth of practical information on current approaches to the study of insect-plant interactions. Methods described include direct behavioral observation; assays of host finding, oviposition, and feeding behavior of insect herbivores; post-ingestion physiological effects; measurement of food quality and sensory responses of insects to plant stimuli; chemical isolation and identification of active phytochemicals; evaluation of plant resistance to insects; and the biochemistry of allelochemic interactions.
Download or read book Quick Bibliography Series written by and published by . This book was released on 1976 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Ecological Research written by and published by Academic Press. This book was released on 1986-02-07 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jarvis and McNaughton provide a cogent example of the impact of physiological studies in ecology. The study of transpiration is of basic importance in botany and their paper shows how the often conflicting conclusions reached by physiological ecologists and micrometeorologists may be reconciled. Courtney's analysis of Pereid butterfly ecology looks at the various evolutionary strategies adopted by the butterflies, their food plants and their predators and parasites. Franklin and his colleagues have distilled years of research on the decomposition of woody debris into a comprehensive treatment of both the nature and importance of this process in a variety of environments. Vogt and her colleagues also deal with an aspect of decomposition, focusing instead on the importance of the death and decay of root material. Finally, Hartenstein presents a lively discussion on the serious consequences of soil organic carbon deficiency. Combining man made organic waste and earthworm based biotechnology might help in managing carbon poor soils.****FROM THE PREFACE: Over recent years physiological plant ecology has been one of the most active areas of ecological research. It offers a prospect of explaining community function in terms of how the physiological properties of individual plants relate to patterns of microclimate generated in the community itself. However, the strategies of investigation and measurement techniques of the physiological ecologist frequently require very detailed work on just small amounts of material. Providing an integrated assessment of community function from such investigations may not be straightforward.
Download or read book Entomology Abstracts written by and published by . This book was released on 1984 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the Arnold Arboretum written by Arnold Arboretum and published by . This book was released on 1987 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes annual "Bibliography of the published writings of the staff and students..."
Download or read book Studies on Mechanisms of Resistance in the Wild Potato Solanum Berthaultii Hawkes to the Colorado Potato Beetle Leptinotarsa Decemlineata Say Coleoptera Chrysomelidae written by Michael Brent Dimock and published by . This book was released on 1985 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annals of the Entomological Society of America written by and published by . This book was released on 1995 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diamondback Moth Resistance Mechanisms in Brassica Oleracea written by Sanford D. Eigenbrode and published by . This book was released on 1990 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
