Download or read book Longevity of the Habrobracon Juglandis on a Starvation Diet written by Mary Helen Roob and published by . This book was released on 1949 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Lifespan of Animals Volume 5 written by G. E. W. Wolstenholme and published by John Wiley & Sons. This book was released on 2009-09-18 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Novartis Foundation Series is a popular collection of the proceedings from Novartis Foundation Symposia, in which groups of leading scientists from a range of topics across biology, chemistry and medicine assembled to present papers and discuss results. The Novartis Foundation, originally known as the Ciba Foundation, is well known to scientists and clinicians around the world.
Download or read book The Lifespan of Animals written by Ciba Foundation and published by . This book was released on 1959 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cell Cycle and Cell Differentiation written by J. Reinert and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is instructive to compare the response of biologists to the two themes that comprise the title of this volume. The concept of the cell cycle-in contra distinction to cell division-is a relatively recent one. Nevertheless biologists of all persuasions appreciate and readily agree on the central problems in this area. Issues ranging from mechanisms that initiate and integrate the synthesis of chro mosomal proteins and DNA during S-phase of mitosis to the manner in which assembly of microtubules and their interactions lead to the segregation of metaphase chromosomes are readily followed by botanists and zoologists, as well as by cell and molecular biologists. These problems are crisp and well-defined. The current state of "cell differentiation" stands in sharp contrast. This, one of the oldest problems in experimental biology, almost defies definition today. The difficulties arise not only from a lack of pertinent information on the regulatory mechanisms, but also from conflicting basic concepts in this field. One of the ways in which this situation might be improved would be to find a broader experimental basis, including a better understanding of the relationship between the cell cycle and cell differentiation.
Download or read book Evolutionary Strategies of Parasitic Insects and Mites written by Peter Price and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the invited lectures presented in a symposium entitled "Evolutionary strategies of parasitic insects and mites" at the national meeting of the Entomological Society of America in Minneapolis, Minnesota, 2-5 December, 1974. The intent was to bring together biologists who have worked on arthropods that are either plant or animal parasites in order to foster consideration of general aspects of the parasitic way of life. There seems to be a deficiency of ecological and evolutionary concepts relating to parasitism, in contrast to the burgeoning literature on predation, and it appeared that an amalgamation of studies on plant and animal parasites might help development of some generalities. Since parasities are far more numerous than predators in the world fauna, or in any particular community, emphasis on their study is justified. I freely admit that para sitoids have been usefully regarded as predators by ecologists, and many concepts on predation have been derived from their study. Also, in whichever category one places the parasitoids, that is the one which contains the most species. However, from an evolu tionary point of view they show many characteristics that must be regarded as those of a parasite. Notably, they are small, highly specific to their host, highly coevolved with it, as a result many species can coexist, and their adaptive radiation has produced the majority of the species diversity seen on Earth today.
Download or read book The Braconid and Ichneumonid Parasitoid Wasps written by Donald L. J. Quicke and published by John Wiley & Sons. This book was released on 2015-01-20 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Ichneumonoidea is a vast and important superfamily of parasitic wasps, with some 60,000 described species and estimated numbers far higher, especially for small-bodied tropical taxa. The superfamily comprises two cosmopolitan families - Braconidae and Ichneumonidae - that have largely attracted separate groups of researchers, and this, to a considerable extent, has meant that understanding of their adaptive features has often been considered in isolation. This book considers both families, highlighting similarities and differences in their adaptations. The classification of the whole of the Ichneumonoidea, along with most other insect orders, has been plagued by typology whereby undue importance has been attributed to particular characters in defining groups. Typology is a common disease of traditional taxonomy such that, until recently, quite a lot of taxa have been associated with the wrong higher clades. The sheer size of the group, and until the last 30 or so years, lack of accessible identification materials, has been a further impediment to research on all but a handful of ‘lab rat’ species usually cultured initially because of their potential in biological control. New evidence, largely in the form of molecular data, have shown that many morphological, behavioural, physiological and anatomical characters associated with basic life history features, specifically whether wasps are ecto- or endoparasitic, or idiobiont or koinobiont, can be grossly misleading in terms of the phylogeny they suggest. This book shows how, with better supported phylogenetic hypotheses entomologists can understand far more about the ways natural selection is acting upon them. This new book also focuses on this superfamily with which the author has great familiarity and provides a detailed coverage of each subfamily, emphasising anatomy, taxonomy and systematics, biology, as well as pointing out the importance and research potential of each group. Fossil taxa are included and it also has sections on biogeography, global species richness, culturing and rearing and preparing specimens for taxonomic study. The book highlights areas where research might be particularly rewarding and suggests systems/groups that need investigation. The author provides a large compendium of references to original research on each group. This book is an essential workmate for all postgraduates and researchers working on ichneumonoid or other parasitic wasps worldwide. It will stand as a reference book for a good number of years, and while rapid advances in various fields such as genomics and host physiological interactions will lead to new information, as an overall synthesis of the current state it will stay relevant for a long time.
Download or read book Cell and Molecular Biology of Artemia Development written by A. Warner and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: The brine shrimp Artemia has become an important experimental system for studies of the developmental process. In recent years the shrimp has yielded considerable information on the pattern of development, bio chemistry, and gene structure and expression of crustaceans. This book is a compilation of research activity from twenty five of the most active re search laboratories working with brine shrimp in the above areas. It also represents the proceedings of a NATO Advanced Research Workshop held in Montreal, Canada, August 11-13, 1988. The book contains twenty nine full papers covering the major areas discussed at the workshop. In addition, one page abstracts representing seventeen poster presentations which were given at the workshop, and which were deemed to be most relevant to the theme of the book, are included. These are designated with an [al in the Table of Contents following the title of each paper. A considerable amount of discussion which took place during the workshop has not been included in the book because of space limitations. However, the editors will endeavour to make some of this in formation available at a later date through the Artemia Newsletter. In addition to the high percentage of invited speakers who attended and contributed to the workshop, the organizers would like to thank a number of participants who made valuable contributions to the major dis cussion sessions. These include: John Freeman, Michael Horst, Herman Slegers, Jack Vaughn, Frank Conte, Sandy McLennan, Clive Trotman and Patrick Sorgeloos.
Download or read book Advances in Genetics written by and published by Academic Press. This book was released on 1988-11-01 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Genetics
Download or read book The Biological Bulletin written by Frank Rattray Lillie and published by . This book was released on 1950 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 17, 21-105 contain Annual reports of the Marine Biological Laboratory for 1907/08-1952.
Download or read book Clinical Toxicology of Agricultural Chemicals written by Sheldon L. Wagner and published by William Andrew. This book was released on 1983 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physiological Mechanisms of Motivation written by D.W. Pfaff and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: To scientists engaged in research on the cellular mechanisms in the mammalian brain, concepts of "motivation" seem to be a logical neces sity, even if they are not fashionable. Immersed in the detailed, time consuming research required to deal with mammalian nerve cells, we usually pay scant attention to the more global brain -behavior questions that have arisen from decades of biological and psychological studies. We felt it was time to confront these issues-namely, how far has neuro biological investigation come in uncovering mechanisms by which moti vational signals influence behavior? At Rockefeller University, we have recently held a course on this subject. We restricted our treatment to those motivational systems most tractable to physiological approaches, and invited scientists skilled in both behavioral issues and physiological techniques to participate. This volume results from that course. The deans and administration at Rockefeller University provided much help in planning the course, and the staff of Springer-Verlag assisted in planning the book. Gabriele Zummer helped organize both the course and the processing of book chapters. They all deserve our thanks. December 1981 Donald W. Pfaff Professor of Neurobiology and Behavior Rockefeller University Contents Part One: Concepts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Chapter 1 Donald W. Pfaff Motivational Concepts: Definitions and Distinctions . . . . . . . . . . 3 Motivation: A Brief Review of Concepts. . . . . . . . . . . . . . . . . . . . . . . . . . 5 Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Reinforcement, Reward . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Incentive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Arousal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Emotion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Motivation Is a Unitary Behavioral Concept with Multiple Neurophysiological Mechanisms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Chapter 2 Alan N.
Download or read book Ciba Foundation Colloquia on Ageing written by Ciba Foundation and published by . This book was released on 1959 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: V. 1. General aspects.--v. 2. Ageing in transient tissues.--v. 3. Methodology of the study of ageing.--v. 4. Water and electrolyte metabolism in relation to age and sex.--v. 5. The lifespan of animals.
Download or read book Handbook of Gerontology written by James A. Blackburn and published by John Wiley & Sons. This book was released on 2007-06-15 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multidisciplinary resource that combines the latest research with the best practices for working with older adults The Handbook of Gerontology: Evidence-Based Approaches to Theory, Practice, and Policy provides an essential source of important theoretical and applied information on gerontology for all mental health professionals interested in optimizing the health and well-being of older adults. Interdisciplinary and incorporating the most current evidence-based practices in its focus, this timely book considers the many factors that affect the way this growing population experiences the world-and provides a positive and proactive guide to administering care. Integrating the latest research findings with important practice implications for working with an older client population, the Handbook of Gerontology draws on a multidisciplinary team of expert contributors who provide coverage and insight into a diverse range of topics, including: A global perspective on aging Elder abuse Family caregiving Parenting grandchildren Depression Substance abuse Alzheimer's disease Successful aging and personality Biological and cognitive aspects and theories of aging An exceptional resource for practitioners, researchers, policymakers, and students, the Handbook of Gerontology is essential reading for anyone who works with older adults.
Download or read book Canadian Journal of Zoology written by and published by . This book was released on 1962 with total page 740 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 1980 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Honey Bee Pathology written by Leslie Bailey and published by . This book was released on 1981 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The honey bee; Viruses; Bacteria; Fungi; Protozoa; Parasitic mites; Insect and nematode parasites; Disorders of uncertain origin and non-infectious diseases; The treatment of bee diseases.
Download or read book The American Naturalist written by and published by . This book was released on 1949 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
