Download or read book Philopatry Inbreeding and the Evolution of Sex written by William M. Shields and published by Suny Press. This book was released on 1982 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this comprehensive synthesis, William M. Shields introduces a provocative new hypothesis linking the previously disconnected topics of philopatry, inbreeding, and sex. Shields draws widely from theory and data in genetics, ecology, and behavior in exploring the evolutionary causes and consequences of philopatric (localized) and vagrant dispersal, inbreeding and outbreeding mating systems, and asexual and sexual reproduction. His resulting hypothesis, that philopatry evolved because it increases inbreeding intensity and that inbreeding has survival value, has profound implications for the future study of evolutionary theory.
Download or read book Philopatry Inbreeding and the Evolution of Sex written by William M. Shields and published by State University of New York Press. This book was released on 1983-06-30 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this comprehensive synthesis, William M. Shields introduces a provocative new hypothesis linking the previously disconnected topics of philopatry, inbreeding, and sex. Shields draws widely from theory and data in genetics, ecology, and behavior in exploring the evolutionary causes and consequences of philopatric (localized) and vagrant dispersal, inbreeding and outbreeding mating systems, and asexual and sexual reproduction. His resulting hypothesis, that philopatry evolved because it increases inbreeding intensity and that inbreeding has survival value, has profound implications for the future study of evolutionary theory.
Download or read book Philopatry Inbreeding and the Adaptive Advantages of Sex written by William Michael Shields and published by . This book was released on 1979 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shorebirds written by J. Burger and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among birds, shorebirds provide some of the more unique opportunities to examine basic problems in behavior, ecology, and evolution. This is in large measure due to the diversity, both behaviorally and ecologically, of a group closely related taxonomically and distributed throughout the world. The overall aim of these two volumes is to provide a representative selection of current research being conducted on shorebird behavior and ecology. Traditionally, marine birds have included those species that breed in large colonies on offshore islands along coasts (see Volume 4 of this series). Although shorebirds have generally not been considered within this group, the fact that almost 40% of the species breed along coasts and more than 60% often or always spend the nonbreeding season in coastal habitats more than justifies their inclusion as marine birds (at least those species that totally or partially depend upon the marine environment). Their inclusion markedly increases species diversity in marine birds since shorebirds add about 217 species to the 280 that are traditionally thought of as marine.
Download or read book The Ecology of Adaptive Radiation written by Dolph Schluter and published by OUP Oxford. This book was released on 2000-08-31 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive radiation is the evolution of diversity within a rapidly multiplying lineage. It can cause a single ancestral species to differentiate into an impressively vast array of species inhabiting a variety of environments. Much of life's diversity has arisen during adaptive radiations. Some of the most famous recent examples include the East African cichlid fishes, the Hawaiian silverswords, and of course, Darwin's Gal--aacute--;pagos finches,. This book evaluates the causes of adaptive radiation. It focuses on the 'ecological' theory of adaptive radiation, a body of ideas that began with Darwin and was developed through the early part of the 20th Century. This theory proposes that phenotypic divergence and speciation in adaptive radiation are caused ultimately by divergent natural selection arising from differences in environment and competition between species. In The Ecology of Adaptive Radiation the author re-evaluates the ecological theory, along with its most significant extensions and challenges, in the light of all the recent evidence. This important book is the first full exploration of the causes of adaptive radiation to be published for decades, written by one of the world's best young evolutionary biologists.
Download or read book The Natural History of Inbreeding and Outbreeding written by Nancy Wilmsen Thornhill and published by University of Chicago Press. This book was released on 1993-08-15 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inbreeding, the mating of close kin, and outbreeding, the mating of distant relatives or unrelated organisms, have long been important subjects to evolutionary biologists. Inbreeding reduces genetic diversity in a population, increasing the likelihood that genetic defects will become widespread and deprive a population of the diversity it may need to cope with its environment. Most plants and animals have evolved behavioral and morphological mechanisms to avoid inbreeding. However, today many endangered species exist only in small, very isolated populations where inbreeding is unavoidable, so it has become a concern for conservationists. In this volume, twenty-six experts in evolution, behavior, and genetics examine the causes and consequences of inbreeding. The authors ask whether inbreeding is as problematic as biologists have thought, under what ecological conditions inbreeding occurs, and whether organisms that inbreed have mechanisms to dampen the anticipated problems of reduced genetic variation. The studies, including theoretical and empirical work on wild and captive populations, demonstrate that many plants and animals inbreed to a greater extent than biologists have thought, with variable effects on individual fitness. Graduate students and researchers in evolutionary biology, animal behavior, ecology, and conservation biology will welcome this wide-ranging collection.
Download or read book The Acari written by Reinhart Schuster and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the Inaugural Meeting of the European Association of Acarol ogists (EURAAC), held in Amsterdam in 1987, it was decided that the holding of a Symposium at regular intervals should be a major objective. With this in view, it was agreed that Professor Reinhart Schuster, the senior editor, be invited to accept the Presidency of the Association and, arising from that Office, to organize the first Symposium in Austria in 1988. There was strong support for a main theme focused on a particular aspect of acarology. From these discussions there emerged the proposal that emphasis be placed on aspects of reproduction, development and life-history strategies of the Acari. These were topics in the forefront of the discipline with exciting developments of interest not only to acarologists but to a wider audience because of the light they cast on fundamental processes in physiology, ecology and evolutionary biology. The object then was to invite a small number of key workers to present extended papers related to the main theme. There were seven of these all of which appear in the book. The remaining 51 contributions were offered papers a number of which fit within the framework of the Symposium theme.
Download or read book Evolution As Entropy written by Daniel R. Brooks and published by University of Chicago Press. This book was released on 1988-10-15 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition in just two years offers a considerably revised second chapter, in which information behavior replaces analogies to purely physical systems, as well as practical applications of the authors' theory. Attention is also given to a hierarchical theory of ecosystem behavior, taking note of constraints on local ecosystem members resul.
Download or read book The Re introduction of the Lynx Into the Alps written by Christine Breitenmoser-Würsten and published by Council of Europe. This book was released on 1998-01-01 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genome Chaos written by Henry H. Heng and published by Academic Press. This book was released on 2019-05-25 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genome Chaos: Rethinking Genetics, Evolution, and Molecular Medicine transports readers from Mendelian Genetics to 4D-genomics, building a case for genes and genomes as distinct biological entities, and positing that the genome, rather than individual genes, defines system inheritance and represents a clear unit of selection for macro-evolution. In authoring this thought-provoking text, Dr. Heng invigorates fresh discussions in genome theory and helps readers reevaluate their current understanding of human genetics, evolution, and new pathways for advancing molecular and precision medicine. Bridges basic research and clinical application and provides a foundation for re-examining the results of large-scale omics studies and advancing molecular medicine Gathers the most pressing questions in genomic and cytogenomic research Offers alternative explanations to timely puzzles in the field Contains eight evidence-based chapters that discuss 4d-genomics, genes and genomes as distinct biological entities, genome chaos and macro-cellular evolution, evolutionary cytogenetics and cancer, chromosomal coding and fuzzy inheritance, and more
Download or read book Animal Dispersal written by N.C. Stenseth 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: 4.1.1 Demographic significance Confined populations grow more rapidly than populations from which dispersal is permitted (Lidicker, 1975; Krebs, 1979; Tamarin et at., 1984), and demography in island populations where dispersal is restricted differs greatly from nearby mainland populations (Lidicker, 1973; Tamarin, 1977, 1978; Gliwicz, 1980), clearly demonstrating the demographic signi ficance of dispersal. The prevalence of dispersal in rapidly expanding populations is held to be the best evidence for presaturation dispersal. Because dispersal reduces the growth rate of source populations, it is generally believed that emigration is not balanced by immigration, and that mortality of emigrants occurs as a result of movement into a 'sink' of unfavourable habitat. If such dispersal is age- or sex-biased, the demo graphy of the population is markedly affected, as a consequence of differ ences in mortality in the dispersive sex or age class. Habitat heterogeneity consequently underlies this interpretation of dispersal and its demographic consequences, although the spatial variability of environments is rarely assessed in dispersal studies.
Download or read book Minimum Animal Populations written by Hermann Remmert and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: H. REMMERT Small populations are very often discussed, but there seems to be no general overview touching all the self-evident but norma,lly simply neglected problems connected with small populations. First, there are many very different types of organisms, and as every biologist should know, the problems of small populations are very different in different types of organisms. 1. In vascular plants the problems are different from the situation in birds and mammals; in marine benthic animals or in parasites such as tapeworms the problems are different again, and in seasonal planktonic animals or insects they are different from those in biotopes under constant conditions. In tapeworms or in vascular plants, an adult organism seems to be comparable to a population of mammals or birds because its offspring can be so diverse and plentiful. 2. There are small populations which explode and break down to a small population again, and then explode and break down again.
Download or read book Ecological Principles of Nature Conservation written by I. Hansson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the first in a series entitled Conservation Ecology: Principles, Practices and Management, a theme which Elsevier's pioneer ing journal Biological Conservation has promoted since its foundation thirty-three years ago. The science of conservation ecology is now widely acknowledged as an essential component in the planning and develop ment of activities which change or modify our natural environment. Nevertheless in spite of much research and publicity, there is still a wide gap between theory and practice. Today it is especially important to try to bridge this gap by interpreting the results of ecological research so that they are understandable and relevant to a wide range of land managers, agriculturalists, foresters, and those working in the many categories of protected areas. The volumes in this series are designed to fulfil this purpose, and also to play an important educational role for students of the environmental sciences in schools, universities and other institutions.
Download or read book Sex Differences written by Yves Christen and published by Routledge. This book was released on 2017-07-28 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Few people realize how much science can tell us about the differences between men and women. Yves Christen, provided the first comprehensive overview of research in this area when this classic book was first published in the1990s. He goes beyond simplistic biology is destiny arguments and constructs a convincing case for linking social and biological approaches in order to understand complex differences in behavior.Biologists agree that the sexes differ in brain and body structure. Christen links these differences in cerebral anatomy to differences in behavior and intellect. Taking his readers on a journey through psychology, endocrinology, demography, and many other fields, Christen shows that the biological and the social are not antagonistic. To the contrary, social factors tend to exaggerate the biological rather than neutralize it.This controversial work, Sex Differences, takes on traditional feminism for its refusal to confront the evidence on biologically determined sex differences. Christen argues for a feminism that sees traits common to women in a positive light, in the tradition of such early feminists as Clemence Royer and Margaret Sanger, as well as more contemporary feminist sociobiologists like Sarah Hrdy. We deny sex differences only at the price of scientific truth and our own self-respect.
Download or read book Avian Genetics written by F. Cooke and published by Academic Press. This book was released on 2013-09-24 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: Avian Genetics: A Population and Ecological Approach is a collection of papers that deals with the study of birds in relation to the synthetic theory of evolution. This book studies the ecology, demography, behavior, and geographical distribution of birds; the text also discusses quantitative, chromosomal, biochemical, and population genetics. Part I reviews the various genetic interactions, including an analysis of DNA sequence variation. The different and newer techniques are compared such as the works of Sibley, Quinn, and White. Part II describes the molding genetic variation and covers topics such as inbreeding; gene flow and the genetic structure of populations; non-random mating; and the process of selection in natural populations of birds. Part III covers actual genetic case histories, including quantitative ecological genetics of great tits; genetic evolution of house sparrows; and presentation of evidence for sexual selection by female choice in the Arctic Skua. This book also presents future research in subjects such as the neutrality-selection controversy or genetics and conservation. This text can be beneficial for ecologists, ornithologists, animal conservationists, and population biologists studying birds.
Download or read book Strategies of Sex and Survival in Female Hamadryas Baboons written by Larissa Swedell and published by Routledge. This book was released on 2015-10-15 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the first field study focusing on the behavior of hamadryas females in the wild. In its attempt to rectify the male-biased view of hamadryas baboon behavior that has persisted over the decades, this book suggests that female behavior contributes more to hamadryas social organization than has previously been assumed and that females may, in fact, be acting in their own best interests after all. For upper-level undergraduate courses on primate behavior and ecology.
Download or read book The Ecology and Management of Breeding Waterfowl written by and published by U of Minnesota Press. This book was released on 1992 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
