Download or read book Natural Selection in the Wild MPB 21 Volume 21 written by John A. Endler and published by Princeton University Press. This book was released on 2020-03-31 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural selection is an immense and important subject, yet there have been few attempts to summarize its effects on natural populations, and fewer still which discuss the problems of working with natural selection in the wild. These are the purposes of John Endler's book. In it, he discusses the methods and problems involved in the demonstration and measurement of natural selection, presents the critical evidence for its existence, and places it in an evolutionary perspective. Professor Endler finds that there are a remarkable number of direct demonstrations of selection in a wide variety of animals and plants. The distribution of observed magnitudes of selection in natural populations is surprisingly broad, and it overlaps extensively the range of values found in artificial selection. He argues that the common assumption that selection is usually weak in natural populations is no longer tenable, but that natural selection is only one component of the process of evolution; natural selection can explain the change of frequencies of variants, but not their origins.
Download or read book Juris Zoology written by Geordie Duckler and published by Rowman & Littlefield. This book was released on 2022-03-14 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book exists at the intersection of two complementary and conflicting perspectives, law and biology. From the vantage point of both disciplines, Juris Zoology provides a comprehensive and realistic framework to objectively assess the role and significance of animals in American civil and criminal law. Contrasting the views of animal rights activists, Duckler examines animals in terms of their prehistory, history, biology, social utility, economic effect, and aesthetic value. Focusing on animal captivity, control, use, and value, Duckler refutes the proposal of granting animal's legal rights. The book offers a new and controversial voice to the national conversation on the propriety of animal rights, and would be of interest to lawyers, economists, sociologists, as well as scholars and professionals in animal-related fields.
Download or read book Contributions to the Theory of Natural Selection written by Alfred Russel Wallace and published by Rarebooksclub.com. This book was released on 2009-08 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1870 edition. Excerpt: ...weak feet and bills (imperfect tools for forming a delicate structure) build rude, flat nests of sticks, laid across strong branches which will bear their weight and that of their bulky young. They can do no better. The Caprimulgidae have the most imperfect tools of all, feet that will not support them except on a flat surface (for they cannot truly perch) and a bill excessively broad, short, and weak, and almost hidden by feathers and bristles. They cannot build a nest of twigs or fibres, hair or moss, like other birds, and they therefore generally dispense with one altogether, laying their eggs on the bare ground, or on the stump or flat limb of a tree. The clumsy hooked bills, short necks and feet, and heavy bodies of Parrots, render them quite incapable of building a nest like most other birds. They cannot climb up a branch without using both bill and feet; they cannot even turn round on a perch without holding on with their bill. How, then, could they inlay, or weave, or twist tho materials of a nest? Consequently, they all lay in holes of trees, the tops of rotten stumps, or in deserted ants' nests, the soft materials of which they can easily hollow out. Many terns and sandpipers lay their eggs on the bare sand of the sea-shore, and no doubt the Duke of Argyll is correct when he says, that the cause of this habit is not that they are unable to form a nest, but that, in such situations, any nest would be conspicuous and lead to tho discovery of the eggs. The choice of place is, however, evidently determined by tho habits of the birds, who, in their daily search for food, are continually roaming over extensive tidewashed flats. Gulls vary considerably in their mode of nesting, but it is always in accordance with their structure and habits....
Download or read book Natural Selection and Tropical Nature written by Alfred Russel Wallace and published by Hardpress Publishing. This book was released on 2012-01 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
Download or read book Natural Selection and Tropical Nature written by Alfred Russel Wallace and published by Forgotten Books. This book was released on 2015-06-17 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Natural Selection and Tropical Nature: Essays on Descriptive and Theoretical Biology The present volume consists mainly of a reprint of two volumes of essays - Contributions to the Theory of Natural Selection, which appeared in 1870, with a second edition in 1871, and has now been many years out of print; and, Tropical Nature and Other Essays, which appeared in 1878. In preparing a new edition of these works to appear as a single volume I have thought it advisable to omit two essays - that on "The Malayan Papilionidæ" as being too technical for general readers, and that on "The Distribution of Animals as indicating Geographical Changes," which contains nothing that is not more fully treated in my other works. Another essay - "By - Paths in the Domain of Biology" - has also been partly omitted, one portion of it forming a short chapter on "The Antiquity and Origin of Man," while another portion has been incorporated in the chapter on "The Colours of Animals and Sexual Selection." More than compensating for these omissions are two new chapters - "The Antiquity of Man in North America" and 'The Debt of Science to Darwin." Many corrections and some important additions have been made to the text, the chief of which are indicated in the table given below; and to facilitate reference the two original works have separate headings, and form Parts I. and II. of the present volume. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Contributions To The Theory Of Natural Selection written by and published by . This book was released on 1870 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geographic Variation Speciation and Clines MPB 10 Volume 10 written by John A. Endler and published by Princeton University Press. This book was released on 2020-03-31 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geographic Variation, Speciation and Clines explores the origins and development of geographic variation, divergence, and speciation. In particular it is concerned with genetic divergence as it is usually found on continents, among groups of populations isolated only by distance. Although earlier writers on this topic considered the effects of geography and dispersal, intense geographic differentiation and speciation were thought to require complete isolation. Professor Endler shows how geographic differentiation and speciation may develop in spite of continuous gene flow. Following a review of the diverse and scattered literature on gene flow and population differentiation, the author discusses the relationships among gene flow, dispersal, and migration. He then summarizes the factors which limit the geographic extent of gene flow, and those which allow steep clines to develop in the absence of barriers to gene flow. His analysis draws on examples from the field, experiments, and single- and multiple-locus models. The mechanism and conditions for parapatric speciation are presented: steepening clines, development into hybrid zones, and the evolution of sexual isolation. In the final chapter the author considers the interpretation of natural clines and the associated geographic patterns of subspecies and species.
Download or read book Natural Selection written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Selection written by and published by . This book was released on 1992 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, George C. Williams--one of evolutionary biology's most distinguished scholars--examines the mechanisms and meaning of natural selection in evolution. Williams offers his own perspective on modern evolutionary theory, including discussions of the gene as the unit of selection, clade selection and macroevolution, diversity within and among populations, stasis, and other timely and provocative topics. In dealing with the levels-of-selection controversy, he urges a pervasive form of the replicator-vehicle distinction. Natural selection, he argues, takes place in the separate domains.
Download or read book The Process of Animal Domestication written by Marcelo Sánchez-Villagra and published by Princeton University Press. This book was released on 2022-01-18 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first modern scholarly synthesis of animal domestication Across the globe and at different times in the past millennia, the evolutionary history of domesticated animals has been greatly affected by the myriad, complex, and diverse interactions humans have had with the animals closest to them. The Process of Animal Domestication presents a broad synthesis of this subject, from the rich biology behind the initial stages of domestication to how the creation of breeds reflects cultural and societal transformations that have impacted the biosphere. Marcelo Sánchez-Villagra draws from a wide range of fields, including evolutionary biology, zooarchaeology, ethnology, genetics, developmental biology, and evolutionary morphology to provide a fresh perspective to this classic topic. Relying on various conceptual and technical tools, he examines the natural history of phenotypes and their developmental origins. He presents case studies involving mammals, birds, fish, and insect species, and he highlights the importance of domestication for the comprehension of evolution, anatomy, ontogeny, and dozens of fundamental biological processes. Bringing together the most current developments, The Process of Animal Domestication will interest a wide range of readers, from evolutionary biologists, developmental biologists, and geneticists to anthropologists and archaeologists.
Download or read book A Most Interesting Problem written by Jeremy DeSilva and published by Princeton University Press. This book was released on 2021-01-12 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In 1859, Charles Darwin proposed a mechanism for biological evolution in his most famous work, On the Origin of Species. However, Origin makes little mention of humans. Despite this, Darwin thought deeply about humans and in 1871 published The Descent of Man, his influential and controversial book in which he applied evolutionary theory to humans and detailed his theory of sexual selection. February 2021 will mark the 150th anniversay of its publication. In [this book], twelve leading anthropologists, biologists, and journalists revisit The Descent. Following the same organization as the first edition of Descent --less the large section on sexual selection--each author reviews what Darwin wrote in Descent, comparing his words to what we now know"--
Download or read book Ecology Abstracts written by and published by . This book was released on 1988 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Indexes journal articles in ecology and environmental science. Nearly 700 journals are indexed in full or in part, and the database indexes literature published from 1982 to the present. Coverage includes habitats, food chains, erosion, land reclamation, resource and ecosystems management, modeling, climate, water resources, soil, and pollution.
Download or read book Eco Evolutionary Dynamics written by and published by Academic Press. This book was released on 2014-08-12 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theme of this volume is to discuss Eco-evolutionary Dynamics. Updates and informs the reader on the latest research findings Written by leading experts in the field Highlights areas for future investigation
Download or read book Aberdeen Plant Materials Center written by and published by . This book was released on 1988 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Public Health Reports written by and published by . This book was released on 1962 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Series of Fortunate Events written by Sean B. Carroll and published by Princeton University Press. This book was released on 2020-10-06 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Fascinating and exhilarating—Sean B. Carroll at his very best."—Bill Bryson, author of The Body: A Guide for Occupants From acclaimed writer and biologist Sean B. Carroll, a rollicking, awe-inspiring story of the surprising power of chance in our lives and the world Why is the world the way it is? How did we get here? Does everything happen for a reason or are some things left to chance? Philosophers and theologians have pondered these questions for millennia, but startling scientific discoveries over the past half century are revealing that we live in a world driven by chance. A Series of Fortunate Events tells the story of the awesome power of chance and how it is the surprising source of all the beauty and diversity in the living world. Like every other species, we humans are here by accident. But it is shocking just how many things—any of which might never have occurred—had to happen in certain ways for any of us to exist. From an extremely improbable asteroid impact, to the wild gyrations of the Ice Age, to invisible accidents in our parents' gonads, we are all here through an astonishing series of fortunate events. And chance continues to reign every day over the razor-thin line between our life and death. This is a relatively small book about a really big idea. It is also a spirited tale. Drawing inspiration from Monty Python, Kurt Vonnegut, and other great thinkers, and crafted by one of today's most accomplished science storytellers, A Series of Fortunate Events is an irresistibly entertaining and thought-provoking account of one of the most important but least appreciated facts of life.
Download or read book Ecological Niches and Geographic Distributions MPB 49 written by A. Townsend Peterson and published by Princeton University Press. This book was released on 2011-11-20 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Terminology, conceptual overview, biogeography, modeling.
