Tortoises may be the first family of higher animals to become extinct in the coming decades. They are losing the survival race because of what distinguishes them, in particular their slow, steady pace of life and reproduction.
The Last Tortoise offers an introduction to these remarkable animals and the extraordinary adaptations that have allowed them to successfully populate a diverse range of habitats—from deserts to islands to tropical forests. The shields that protect their shoulders and ribs have helped them evade predators. They are also safeguarded by their extreme longevity and long period of fertility. Craig Stanford details how human predation has overcome these evolutionary advantages, extinguishing several species and threatening the remaining forty-five.
At the center of this beautifully written work is Stanford’s own research in the Mascarene and Galapagos Islands, where the plight of giant tortoise populations illustrates the threat faced by all tortoises. He addresses unique survival problems, from genetic issues to the costs and benefits of different reproductive strategies. Though the picture Stanford draws is bleak, he offers reason for hope in the face of seemingly inevitable tragedy. Like many intractable environmental problems, extinction is not manifest destiny. Focusing on tortoise nurseries and breeding facilities, the substitution of proxy species for extinct tortoises, and the introduction of species to new environments, Stanford’s work makes a persuasive case for the future of the tortoise in all its rich diversity.
Trundling along in essentially the same form for some 220 million years, turtles have seen dinosaurs come and go, mammals emerge, and humankind expand its dominion. Is it any wonder the persistent reptile bested the hare? In this engaging book physiologist Donald Jackson shares a lifetime of observation of this curious creature, allowing us a look under the shell of an animal at once so familiar and so strange.
Here we discover how the turtle’s proverbial slowness helps it survive a long, cold winter under ice. How the shell not only serves as a protective home but also influences such essential functions as buoyancy control, breathing, and surviving remarkably long periods without oxygen, and how many other physiological features help define this unique animal. Jackson offers insight into what exactly it’s like to live inside a shell—to carry the heavy carapace on land and in water, to breathe without an expandable ribcage, to have sex with all that body armor intervening.
Along the way we also learn something about the process of scientific discovery—how the answer to one question leads to new questions, how a chance observation can change the direction of study, and above all how new research always builds on the previous work of others. A clear and informative exposition of physiological concepts using the turtle as a model organism, the book is as interesting for what it tells us about scientific investigation as it is for its deep and detailed understanding of how the enduring turtle “works.”
Based on years of field work and the examination of thousands of museum specimens, The Lizards, Crocodiles, and Turtles of Honduras is the final installment of a series of volumes by James R. McCranie documenting the amphibians and reptiles of Honduras.
Thoroughly illustrated by color photographs and maps of geographic distribution, the book describes in detail 86 species of Honduran lizards, crocodilians, and turtles. Identification keys in both English and Spanish allow the ready identification of all species, and discussions of conservation status review current threats to all species. The publication of this work represents the completion of the most comprehensive and detailed study of the amphibian and reptilian faunas of any country in Latin America.
Texas has a large and diverse turtle population, with forms that are found nowhere else (Cagle’s Map Turtle and the Texas Map Turtle) and wide-ranging species that barely touch the state, including the Painted Turtles and the Rough-footed Mud Turtle. From the Sabine River to El Paso, and from the Rio Grande to the Panhandle, thirty-one native and established exotic turtle species are definitely known in Texas, along with one crocodilian, the American Alligator.
Texas Turtles & Crocodilians is the first complete identification guide to all the state’s turtles and to its single alligator. It offers detailed species accounts, range maps, and excellent color photographs to aid in field identification. The authors, two of the state’s most knowledgeable herpetologists, open the book with a broad overview of turtle natural history, conservation biology, observation, and captive maintenance before providing a key to Texas turtles and accounts of the various turtle families and species. Appendices provide brief accounts of species that occurred prehistorically in Texas and non-established exotic species, as well as a table of Texas’ major watersheds and the turtle diversity in each one. Informational resources on Texas turtles and alligators, a map of Texas counties, a glossary, a bibliography, and indexes of common and scientific names complete the volume.
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