Browse Results For:
With all new illustrations, color photographs, revised species accounts, updated maps, and a sturdy flexible binding, this new edition of the authoritative guide to bats in Texas will serve as the field guide and all-around reference of choice for amateur naturalists as well as mammalogists, wildlife biologists, and professional conservationists. Texas is home to all four families of bats that occur in the United States, including thirty-three species of these important yet increasingly threatened mammals. Although five species, each represented by a single specimen, may be regarded as vagrants, no other state has a bat fauna more diverse, from the state’s most common species, the Brazilian free-tailed bat, to the rare hairy-legged vampire. The introductory chapter of this new edition of Bats of Texas surveys bats in general—their appearance, distribution, classification, evolution, biology, and life history—and discusses public health and bat conservation. An updated account for each species follows, with pictures by an outstanding nature photographer, distribution maps, and a thorough bibliography. Bats of Texas also features revised and illustrated dichotomous keys accompanied by gracefully detailed line drawings to aid in identification. A list of specimens examined is located at batsoftexas.com.
Bats of the United States and Canada is the only complete and accessible guide to all forty-seven species of bats found in the region. Bats are among the world’s most fascinating creatures. The only mammals capable of true flight, these animals are marvels of evolution. A wide variety of species lives in the United States and Canada, ranging from the California leaf-nosed bat to the Florida bonneted bat, from the eastern small-footed bat to the northern long-eared Bat. Fact-filled and easy to use, this guide includes accurate range maps, detailed biological information, and useful identification tips. J. Scott Altenbach's stunning photographs accompany each species account, capturing the amazing diversity of these winged mammals. This guide also includes helpful information on the natural history of bats from across the globe. Bats today face ever-increasing danger from destruction of habitat, new technologies such as wind turbines, chemical toxicants, and devastating diseases like white-nose syndrome, which is killing millions of cave bats in the United States and Canada. The authors discuss these threats and others as well as the latest conservation efforts to protect bats around the world. Written by three of the world’s leading bat experts, this volume is the most comprehensive guide to the bat species of the United States and Canada available.
Combining Cloning and Stem-Cell Therapy
Providing the philosophical, practical, and theoretical leverage for abandoning evolution and development in favor of engineering human beings, Becoming Immortal examines the directions biological change might take if civilization were to take charge of its own destiny. With the aid of embryonic manipulation, cloning, and stem-cell therapy, immortality would seem within the reach of future generations. The question is, “Do we presently have the wisdom to undertake creating immortal organisms?” The author examines every facet of this question, from theory to practice, and provides an answer through an in-depth analysis of life and death.
Covering the behavior and ecology of the northern fur seal, this book is a model long-term study of marine mammals, one that tests theory through both observation of undisturbed behavior and manipulative experiments on individuals. Here Roger Gentry draws on nearly two decades of research on three different islands to show how behavior among these seals changes with population size, sex ratio, and environment, to explain the behavior of the population beginning with individuals, and to generalize the results to other members of the eared seal family. In so doing, he offers one of the most comprehensive studies of its kind on any marine mammal species to date.
Gentry shows that the species is driven by very different behavioral traits than have been assumed for it in the past. His book analyzes behavior on scales of hours to lifetimes, investigates the mating system, considers processes that underlie the mating system (site fidelity, behavioral estrus, and the development of territoriality), and addresses specific aspects of maternal strategy (female attendance behavior, pup growth, seasonal influences, and the effects of continental shelf width). Gentry contributes to knowledge about marine mammals by providing a very specific basis for interspecies comparisons, and he suggests a link between population trend and environmental regime shifts. He also guides the debate over seal mating systems from an interpretive to an empirical or experimental basis.
Originally published in 1997.
The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These paperback editions preserve the original texts of these important books while presenting them in durable paperback editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Swordfish, Sailfish, Marlin, and Other Gladiators of the Sea
Knowledge Hubs for the Life Sciences
Biological resource centers (BRCs) collect, certify, and distribute organisms for use in research and in the development of commercial products in the pharmaceutical, agricultural, and biotechnology industries. They maintain a large and varied collection, including cell lines, micro-organisms, recombinant DNA material, biological media and reagents, and the information technology tools that allow researchers to access biological materials. BRCs have established themselves as a crucial element in the life science innovation infrastructure, from their early impact on virology, to their crucial role in addressing cross-culture contamination in the 1970s, to their current leadership in promoting a global biodiversity network. Today they confront new challenges, resulting from shifts in the nature of biological research, the interaction between public and private researchers, and the increasing focus on biosecurity. This book provides a systematic economic assessment of the impact of biological resource centers through their role in facilitating cumulative knowledge in the life sciences and building on their roles as knowledge hubs institutions that facilitate the transfer of scientific and technical knowledge among members of a research community. The knowledge hubs framework offers insight into how to develop and evaluate policy proposals that impinge on the control and access of biological materials. Stern argues that science and innovation policy must be premised on a clear understanding of the role that knowledge hubs play and the policy mechanisms that encourage their sustained growth and effectiveness.
Tortoises, those unmistakable turtles, evolved from a lineage that split off from the familiar pond turtles roughly 100 million years ago. Over time, these plant-eating land turtles spread around the world, growing to an enormous size (depending on the species) and living so long that they have become the stuff of legends. By most accounts, they are indeed the longest-lived of the turtles, with good records suggesting individuals may live as long as 180 years (anecdotal records suggest that some reach ages of 200 years or more). Providing the first comprehensive treatment of North America’s tortoises, Biology and Conservation of North American Tortoises brings together leading experts to give an overview of tortoise morphology, taxonomy, systematics, paleontology, physiology, ecology, behavior, reproduction, diet, growth, health, and conservation. The contributors carefully combine their own expertise and observations with results from studies conducted by hundreds of other researchers. The result is a book that belongs in the library of every herpetologist. Contributors Gustavo Aguirre L. Linda J. Allison Matthew J. Aresco Roy C. Averill-Murray Joan E. Berish Kristin H. Berry Dennis M. Bramble K. Kristina Drake Taylor Edwards Todd C. Esque Richard Franz Craig Guyer J. Scott Harrison Sharon M. Hermann J. Howard Hutchison Elliott R. Jacobson Valerie M. Johnson Richard T. Kazmaier Earl D. McCoy Philip A. Medica Robert W. Murphy Henry R. Mushinsky Kenneth E. Nussear Michael P. O’Connor Thomas A. Radzio David C. Rostal Lora L. Smith James R. Spotila Craig B. Stanford C. Richard Tracy Tracey D. Tuberville Michael Tuma Thane Wibbels
This is the completely revised edition of the essential field guide to the birds of New Guinea. The world’s largest tropical island, New Guinea boasts a spectacular avifauna characterized by cassowaries, megapodes, pigeons, parrots, cuckoos, kingfishers, and owlet-nightjars, as well as an exceptionally diverse assemblage of songbirds such as the iconic birds of paradise and bowerbirds. Birds of New Guinea is the only guide to cover all 780 bird species reported in the area, including 366 endemics. Expanding its coverage with 111 vibrant color plates—twice as many as the first edition—and the addition of 635 range maps, the book also contains updated species accounts with new information about identification, voice, habits, and range. A must-have for everyone from ecotourists to field researchers, Birds of New Guinea remains an indispensable guide to the diverse birds of this remarkable region.