Download or read book Estimation and Analysis of Insect Populations written by Lyman L. McDonald and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers in this volume were presented at a symposium/workshop on "The Estimation and Analysis of Insect Populations" that was held at the University of Wyoming, Laramie, in January, 1988. The meeting was organized with financial support from the United States - New Zealand Cooperative Science Program and the University of Wyoming. The purpose was to bring together approximately equal numbers of quantitative biologists and biometricians in order to (1) provide a synthesis and evaluation of currently available methods for modeling and estimating parameters of insect population, and to (2) stimulate research into new methods where this is appropriate. The symposium/workshop attracted 46 participants. There were 35 papers presented in four subject areas: analysis of stage-frequency data, modeling of population dynamiCS, analysis of spatial data, and general sampling and estimation methods. New results were presented in all these areas. All except one of the papers is included in the present volume.
Download or read book Estimation and Analysis of Insect Populations written by Lyman L McDonald and published by . This book was released on 1989-07-24 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecological Methods written by T.R. Southwood and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: The virtual impossibility of extracting the many different species from a habitat with equal efficiency by a single method (e.g. Nef, 1960). 1.1 Population estimates Population estimates can be classified into a number of different types; the most convenient classification is that adopted by Morris (1955), although he used the terms somewhat differently in a later paper (1960). 1.1.1 Absolute and related estimates The animal numbers may be expressed as a density per unit area of the ground of the habitat. Such estimates are given by nearest neighbour and related techniques (Chapter 2), marking and recapture (Chapter 3), by sampling a known fraction of the habitat (Chapter 4-6) and by removal sampling and random walk techniques (Chapter 7). Absolute population The number of animals per unit area (e.g. hectare, acre). It is almost impossible to construct a budget or to study mortality factors without the conversion of population estimates to absolute figures, for not only do insects often move from the plant to the soil at different developmental stages, but the amount of plant material is itself always changing. The importance of obtaining absolute estimates cannot be overemphasized.
Download or read book Ecological Methods written by Sir Richard Southwood and published by Springer. This book was released on 1978-12-14 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to the study of animal populations; The sampling programme and the measurement and description of dispersion; Absolute population estimates using marking techniques; Absolute population estimates by sampling a unit of habitat - air, plants, plant products and vertebrate hosts; Absolute population estimates by sampling a unit of habitat - soil and litter; Absolute population estimates by sampling a unit of habitat - fresh-water habitats; Relative methods of populations measurement and te derivation of absolute estimates; Estimates based on products and effects of insects; Observational and experimental methods for the estimation of natality, mortality and dispersal; The construction, description and analysis of age-specific life-tables; Age-grouping of insects, time-specific life-tables and predictive population models; Systems analysis and modelling in ecology; Diversity, species packing and habitat description; The estimation of productivity and the construction of energy budgets.
Download or read book Estimation of Insect Populations by Removal Sampling written by Kenneth P. Pruess and published by . This book was released on 1977 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Insect Population Dynamics Outbreaks And Global Warming Effects written by A. S. Isaev and published by John Wiley & Sons. This book was released on 2017-03-27 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new approach to insect modeling discusses population dynamics' regularities, control theory, theory of transitions, and describes methods of population dynamics and outbreaks modeling for forest phyllophagous insects and their effects on global climate change. Research in insect population dynamics is important for more reasons than just protecting forest communities. Insect populations are among the main ecological units included in the analysis of stability of ecological systems. Moreover, it is convenient to test new methods of analyzing population and community stability on the insect-related data, as by now ecologists and entomologists have accumulated large amounts of such data. In this book, the authors analyze population dynamics of quite a narrow group of insects – forest defoliators. It is hoped that the methods proposed herein for the analysis of population dynamics of these species may be useful and effective for analyzing population dynamics of other animal species and their effects and role in global warming. What can insects tell us about our environment and our ever-changing climate? It is through studies like this one that these important answers can be obtained, along with data on the insects and their behaviors themselves. The authors present new theories on modeling and data accumulation, using cutting-edge processes never before published for such a wide audience. This volume presents the state-of-the-art in the science, and it is an essential piece of any entomologist's and forest engineer's library.
Download or read book Residual Insect Demography written by Sarah Emily Silverman and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Given the importance of age in predicting biological events, it follows that studies of population age structure are fundamental to understanding populations and the processes that shape them. Despite its fundamental importance, most studies of wild insect populations do not attempt to measure or estimate adult age structure because of two technical barriers. First, available age grading techniques including genetic, chemical, and wear and tear approaches are imprecise and expensive. Second, chronological age is not a useful metric for insects because they are poikolothermic, and because their life-history and longevity are highly dependent on thermal environment, larval conditions, and adult nutrition. Thus frailty, or relative risk of death, may be more useful in characterizing insect population structure than chronological age. In response to these limitations, the overarching goal of this thesis is to develop conceptual and methodological frameworks for estimating frailty structure in wild insect populations. I present three chapters that use studies of live insects captured in the wild and maintained through death in the lab to gain insight into insect population structure. Data sources include three captive cohort studies of ecologically distinct insects: the vinegar fly Drosophila simulans, the Mediterranean fruit fly Ceratitis capitata and the common house mosquito Culex pipiens. In chapter 1 I introduce a new application of the life table referred to as the Population Life Table (PLT) that is designed to track the post-capture mortality of a population consisting of individuals of mixed ages. I describe the temporal changes in age structure revealed by the PLT for all three species, and potential applications of the PLT in applied insect ecology. In Chapter 2 I introduce two models that can be used to understand frailty structure in wild insect populations, or the distribution of relative mortality risks. I apply these models to two captive cohort data sets (Mosquito and Mediterranean Fruit Fly) to estimate seasonal changes in frailty structure. In Chapter 3 I combine two post-capture assays to study the relationship between reproduction and mortality in the Mediterranean Fruit Fly. I measure the seasonal reproductive and longevity potential of wild-caught medflies of unknown age and compare these patterns to those of a known-age cohort. This research demonstrates the significant potential of studies of live insects to provide insight into population structure in the wild. The methods presented in this thesis may be extended to other post-capture studies of insects, including activity, flight ability, mating propensity, and pesticide resistance to provide complimentary information to traditional studies.
Download or read book Ecology of Insect Populations in Theory and Practice written by L. R. Clark and published by Springer. This book was released on 1974-10-31 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Population and environment; Numerical change in insect populations; Current theories to explain insect numbers; The study of natural populations; The further development of research on insect populations.
Download or read book Modelling Insect Populations in Agricultural Landscapes written by Rafael A. Moral and published by Springer. This book was released on 2024-01-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book combines chapters emphasising mathematical, statistical, and computational modelling applied to insect populations, particularly pests or natural enemies in agricultural landscapes. There is a gap between agricultural pest experimentation and ecological theory, which requires a connection to supply models with laboratory, and field estimates and projects receiving inputs and insights from models. In addition, decision-making in entomology with respect to pest management and biological conservation of natural enemies has been supported by results obtained from different computational and mathematical approaches. This book brings contemporary issues related to optimization in spatially structured landscapes, insect movement, stability analysis, game theory, machine learning, computer vision, Bayesian modelling, as well as other frameworks.
Download or read book Forest Insect Population Dynamics written by and published by . This book was released on 1969 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sampling and Analysis of Insect Populations written by Eizi Juno and published by . This book was released on 1991 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimation of Parameters Affecting the Dynamics of an Insect Population written by Howard William Beck and published by . This book was released on 1977 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sampling Methods in Soybean Entomology written by M. Kogan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insects as a group occupy a middle ground in the biosphere between bacteria and viruses at one extreme, amphibians and mammals at the other. The size and gen eral nature of insects present special problems to the student of entomology. For example, many commercially available instruments are geared to measure in grams, while the forces commonly encountered in studying insects are in the mil ligram range. Therefore, techniques developed in the study of insects or in those fields concerned with 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 fmd their way into the classroom when the problems involved have been suffici ently ironed out to permit students to master the manipulations in a few labo ratory periods. Many specialized techniques are confined to one specific research laboratory. Although methods may be considered commonplace where they are used, in another context even the simplest procedures may save considerable time. It is the purpose of this series (1) to report new developments in methodology, (2) to reveal sources of groups who have dealt with and solved particular entomological problems, and (3) to describe experiments which might be applicable for use in biology laboratory courses.
Download or read book Empirical Methods in the Evaluation of Estimators written by Gerald S. Walton and published by . This book was released on 1973 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Social Insect Populations written by M. V. Brian and published by Elsevier. This book was released on 2013-10-22 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Social Insect Populations focuses on observations on the populations of social insects, including egg production, nesting characteristics, and food collection. The book first underscores the evolution of social life and organization and control of social insect populations. The text also ponders on the numbers and density of social insect populations, as well as methods of estimation, numbers in colonies, and density and biomass. Egg production, stationary populations, nest size, productivity, and survival are discussed. The manuscript discusses reproduction and brood periodicity of social insect populations. Discussions focus on reproduction by single and group of queens and reciprocity among bees, wasps, and ants. The text also examines nest sites and shelters, mating structures, and food collection of social insects. Discussions focus on food supply, intergeneric competition, predators and parasites, and population regulation among bees, wasps, termites, and ants. The book is a dependable reference for readers interested in the study of social insect populations.
Download or read book The Molecular Biology of Insect Disease Vectors written by J.M. Crampton and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: Only one generation ago, entomology was a proudly isolated discipline. In Comstock Hall, the building of the Department of Entomology at Cornell University where I was first introduced to experimental science in the laboratory of Tom Eisner, those of us interested in the chemistry of life felt like interlopers. In the 35 years that have elapsed since then, all of biology has changed, and entomology with it. Arrogant molecular biologists and resentful classical biologists might think that what has happened is a hostile take-over of biology by molecular biology. But they are wrong. More and more we now understand that the events were happier and much more exciting, amounting to a new synthesis. Molecular Biology, which was initially focused on the simplest of organisms, bacteria and viruses, broke out of its confines after the initial fundamental questions were answered - the structure of DNA, the genetic code, the nature of regulatory genes - and, importantly, as its methods became more and more generally applicable. The recombinant DNA revo lution of the 1970s, the development of techniques for sequencing macromolecules, the polymerase chain reaction, new molecular methods of genetic analysis, all brought molecular biology face to face with the infinite complexity and the exuber ant diversity of life. Molecular biology itself stopped being an isolated diScipline, pre occupied with the universal laws of life, and became an approach to addressing fas cinating specific problems from every field of biology.
Download or read book Statistical and Mathematical Methods in Population Dynamics written by R. Cavalloro and published by CRC Press. This book was released on 1984-06-01 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling and estimation of pest population, Data collection and analysis in pest control, Methods for pest control, Pest management systems.
