This profusely illustrated comprehensive key for identifying amphibians and reptiles from the continental United States and Canada incorporates a wealth of scientific findings. Since the first edition was published in 1998 and the second in 2012, the number of currently recognized species of native amphibians and reptiles in the area covered by this key has increased from 545 to 634 to 685, and the number of established non-native species has increased from 39 to 58 to 67. The increase in native taxa reflects the dynamic nature of modern systematics and the use of new (especially molecular) techniques to elucidate relationships and redefine species boundaries. The increase in non-native species reflects the porosity of the North American borders when it comes to controlling animal imports. The key is easy to use and illustrated with outstanding line drawings that show details of color patterns and structures used for identification. To accommodate the additional taxa, the number of line drawings in this third edition has increased from 257 to 279 to 295. In addition, nine maps illustrate the distributions of species that have been recognized since the publication of maps in the most recent editions of the Peterson Field Guides to the reptiles and amphibians of eastern, central, and western North America. A large number of annotations detail current taxonomic ambiguities or disagreements and the literature cited has been expanded. Collectively these features enhance opportunities to teach and learn the classification and identification of amphibians and reptiles in the continental United States and Canada.

Archie Carr, one of the greatest biologists of the twentieth century, played a leading part in finding a new and critical role for natural history and systematics in a post-1950s world dominated by the glamorous science of molecular biology. With the rise of molecular biology came a growing popular awareness of species extinction. Carr championed endangered sea turtles, and his work reflects major shifts in the study of ecology and evolution. A gifted nature writer, his books on the natural history of sea turtles and their habitats in Florida, the Caribbean, and Africa entertained and educated a wide audience. Carr's conservation ethic grew from his field work as well as his friendships with the fishermen who supplied him with many of the stories he retold so engagingly. With Archie Carr as the focus, The Man Who Saved Sea Turtles explores the evolution of the naturalist tradition, biology, and conservation during the twentieth century.

This book has three primary themes: identification, natural history, and conservation. This is the first guide yet produced to the amphibians and reptiles of New York State, a large and heavily populated state that hosts a surprisingly diverse and interesting community of amphibians and reptiles. The book presents the results of the New York State Amphibian and Reptile Atlas for the first time (a compilation of ~60,000 distributional records collected 1990-1999); thus, the volume is a repository for detailed distributional data on the 69 species native to the state. The book presents in-depth species accounts based on the six authors' decades of collective experience as teachers, researchers and conservationists. Supporting chapters focus on the biology of amphibians and reptiles, New York's environment, finding and studying these creatures, and the rich folklore of New York State as it pertains to amphibians and reptiles, particularly rattlesnakes. A heavy emphasis on conservation biology of amphibians and reptiles sets the book apart from any comparable volume yet produced in the United States. To this end, chapters on threats, legal protections, habitat conservation guidelines, and conservation case studies are presented. An expanded color insert presents striking photographs contributed by over 30 photographers. The book is intended for use by natural history buffs generally interested in the vertebrate animals of New York and adjoining regions (Pennsylvania, Connecticut, New Jersey, Massachusetts, Vermont, Quebec and Ontario), students in the many herpetology, vertebrate biology, and natural history courses offered at colleges and field stations in the northeast, public and college libraries, and natural resource professionals interested in learning more about approaches to conserving reptiles and amphibians.

Key features: Presents a contemporary snapshot of the mechanisms underlying the evolution and adaptation of behavior Explores how genetics, epigenetics, development, and environment shape behavior Discusses a broad range of behavioral repertoires and responses, including those related to thermoregulatory, foraging, predatory, displaying, social and escape strategies. Examines physiological and sensory mechanisms Covers the effects of various aspects of global change on behavior, with chapters that focus on the impacts of climate change on hydroregulatory behavior and behavioral responses to the effects of habitat alteration resulting from human-mediated change and colonization by invasive species. Lizards serve as focal organisms for many of biological questions related to evolution, ecology, physiology, and morphology. They are studied at multiple spatial and temporal scales, from the individual to the community level. This book, authored by expert contributors from around the world, explores behaviors underlying the evolution and adaptation of these organisms. It covers conceptual, empirical, and methodological approaches to the understanding of the role that natural and sexual selection play in molding the behavioral traits of lizards. This thorough, illustrated reference should stimulate discussion of the conceptual and methodological approaches for studying the behavioral traits of these fascinating and highly diverse vertebrates.

The aim of this study was to investigate the development and diffferentiation of the adrenal glands in the grass snake during early stages of ontogenesis. After light microscopy and ultrastructural investigation, six developmental phases were distinguished in the grass snake adrenal glands. Similar developmental phases were described in pig embryos but they slightly differ from those presented above. In reptile and mammal embryos a similar direction of changes is observed in primaordia of both tissues forming adrenal glands.

Sea turtles have existed for millions of years, making them fascinating subjects of study. In the last 20 years, the science of sea turtle biology has expanded at an exponential rate, leading to major advances in many areas. This book synthesizes the results of these advances and focuses on how these endangered marine reptiles operate in, adapt to, and are dependent upon particular features of their marine environment. New technology in data gathering, such as DNA analyses, remote sensing, and physiological monitoring techniques, has led to a much greater understanding of the biology of the sea turtle at all stages of their life history.
Areas of advancement discussed in The Biology of Sea Turtles include:
o Population genetics and phylogeny
o Sensory biology
o Migration and orientation hatchling behavior
o Age and growth
o Reproduction and endocrinology sex determination
o Diving physiology
o Osmoregulation
The book also addresses the endangered status of sea turtles and deals with threats to their survival posed by man-made changes to ocean and coastal zones. The first book of its kind, The Biology of Sea Turtles fills a substantial void in the literature, and will be of great value and interest to marine biologists, environmentalists, and conservationists.

’n Onontbeerlike gids vir die uitkenning van al die gevaarlike slange en algemene onskadelike slange in Suider-Afrika, sowel as belangrike en praktiese kitsinligting oor noodhulp ingeval van ’n slangbyt.

Eenvoudige ikone, verspreidingskaarte, bondige teks en talle volkleurfoto's help om slange wat algemeen in die streek voorkom maklik uit te ken. Simptome en behandeling van slangbyte word beskryf, wat die leser lewensbelangrike noodhulpinligting gee.

Slange en Slangbyt in Suider-Afrika is helder, prakties, maklik om te gebruik en van onskatbare waarde vir almal wat van die buitelewe hou.

Describing 102 species of salamanders occurring in the southeastern United States, ecologists Joe Mitchell and Whit Gibbons provide us with the most comprehensive and authoritative, yet accessible and fun-to-read, guide to these often secretive, always fascinating wonders of nature.
Mitchell and Gibbons enumerate the distinguishing characteristics of salamanders, including how they are different from other amphibians and from reptiles, especially lizards. Also discussed are distribution, habitat, behavior and activity, reproduction, food and feeding, predators and defense, conservation, and taxonomy. Accompanying each account are photographs illustrating typical adults and variations and distribution maps for the Southeast and the United States.
Given that 17 percent of the world's species of salamanders live in the Southeast and the scientific and popular concern for the worldwide decline in amphibian populations in general, "Salamanders of the Southeast" will appeal to people of all ages and levels of knowledge interested in natural history and conservation. The guide will help foster the growing interest in salamanders as well as cultivate a desire to protect and conserve these fascinating amphibians and their habitats.
Features: Conservation-oriented approachMore than 400 color photographs77 distribution mapsClear descriptions and photographs of each speciesSections on biology, worldwide diversity, identification, taxonomy, habitats, and conservation"Did You Know?" sidebars of interesting facts

Sasol Eerste Veldgids tot die Paddas van Suider-Afrika is ’n interessante gids tot die paddas van die streek. Volkleurfoto’s, verspreidingskaarte en verstaanbare teks sal nuwelinge en aspirantnatuurkenners help om die algemeenste paddaspesies in Suider-Afrika uit te ken, te ontdek waar hulle voorkom en te leer van hul unieke gedrag en buitengewone eienskappe.

RSPB Spotlight: Snakes is packed with eye-catching, informative colour photos, and features succinct, detailed text written by a knowledgeable naturalist. Snakes are superbly secretive reptiles, celebrated by many for their highly tuned senses and their complex and mysterious seasonal behaviours. Though some people may be fearful of them, these important reptiles play a crucial role in many habitats. And an encounter with any one of our native snake species is an experience worth cherishing. In Spotlight Snakes, Jules Howard takes readers on a journey through the ecology and lifestyle of Britain's three native snake species: the Barred Grass Snake, the Smooth Snake and our only venomous snake species, the Adder. As well as uncovering their unique hunting styles and courtship rituals, he delves into the myths and legends at the heart of humankind's widespread and sometimes troublesome fascination with these animals. He also charts the conservation challenges our native snakes face in the modern age and explores the solutions conservationists are employing to help these extraordinary predators remain a vital part of British ecosystems for generations to come. The Spotlight series introduces readers to the lives and behaviour of our favourite animals with eye-catching colour photographs and informative expert text.

Since the first volume of The Biology of Sea Turtles was published in 1997, the field has grown and matured in ways few of the authors would have predicted-particularly in the areas of physiology, behavior, genetics, and health. Volume III presents timely coverage of emerging areas as well as the integration of approaches and information that did not exist even a decade ago. The book assembles the foremost experts in each topic to provide the most up-to-date and comprehensive book on sea turtles available today. New areas covered include in vivo imaging of structure, spatial distributions of marine turtles at sea, epibiosis, imprinting, parasitology, and climatic effects. Life history is explored in three chapters covering age determination, predator-prey interactions, and mortality from bycatch. The Biology of Sea Turtles, Volume III will inspire scientists and students to explore and expand their understanding of these intriguing animals. The book provides clear baseline summaries, thoughtful syntheses, and effective presentation of the most fundamental topics spanning form and function, health, distributions, behavior, genetics, evolution, and ecology. Its scope and depth make it the definitive go-to reference in the field.

Frogs & Frogging in South Africa offers amateur froggers an accessible and practical introduction to frog identification.

This edition of the highly popular guide has been expertly revised and fully updated to reflect the latest advances in taxonomy and nomenclature.

It offers: all of the species in Africa south of latitude 22 °S; a section on frog biology and behaviour; how to photograph frogs and record their calls; how to attract frogs to your garden, and ideas for projects such as building a pond; the range of frog species to be found in different environmental niches; maps and colourful photographs with the updated accounts; a new key to the identification of tadpole genera; a CD with all 115 frog calls, which offer one of the best ways to find.

Snakes of the World: A Catalogue of Living and Extinct Species, published in 2014, was the first catalogue of its kind and covered all living and fossil snakes described between 1758 and 2012. This new volume will be a supplement to this important herpetological reference and will include new published data on snakes named and recognized since 2012. Key Features Supplements and updates Wallach et al. - Snakes of the World - the only work to cover all living snakes in the world. Includes updates for fossil snakes named since the publication of Wallach et al. Summarizes the systematic snake literature published since the appearance of Wallach et al. Genera and species are listed alphabetically for ease of reference. Related Titles Wallach, V., K. L. Williams, and J. Boundy. Snakes of the World: A Catalogue of Living and Extinct Species (ISBN 978-1-138-03400-6) Aldridge, R. D. and D. M. Sever, eds. Reproductive Biology and Phylogeny of Snakes (ISBN 978-1-57808-701-3) Caldwell, M. W. The Origin of Snakes: Morphology and the Fossil Record (ISBN 978-1-4822-5134-0)

Drawing on the latest scientific research, the authors introduce the book with a discussion of reptile identification, diversity, biology, distribution patterns, and where to find and observe them, as well as unraveling the facts and fallacies of snakebites.

Written in a lively and accessible way, the subsequent chapters offer insight into: -Identification to group level, with an inclusive list of related species-A detailed description of appearance, together with colorful images-Biology and behavior of each group-Conservation status of species-Reproduction details-DistributionInformative panels provide key information at a glance, with a distribution map and clear icons giving typical habitat and period of activity.

A wealth of full-color photographs throughout brings the subject matter vividly to life.

This book will appeal to all wildlife enthusiasts, both professional and amateur, and will prove to be a valuable guide in the field.

This book presents perspectives on the past and present state of the understanding of snake origins. It reviews and critiques data and ideas from paleontology and neontology (herpetology), as well as ideas from morphological and molecular phylogenetics. The author reviews the anatomy and morphology of extant snakes. Methods are also critiqued, including those empirical and theoretical methods employed to hypothesize ancestral ecologies for snakes. The modern debate on squamate phylogeny and snake ingroup phylogeny using molecules and morphology is examined critically to provide insights on origins and evolution. Key Features Important major evolutionary transformation in vertebrate evolution Continuing historical debate in vertebrate paleontology Of wide interest to a core audience of paleontologists, herpetologists, and morphologists Author acknowledged as prominent contributor to debate over snake origins Based on remarkable well preserved fossil specimens

815 species of amphibian have been described on the African continent – 788 frogs, 23 caecilians and four salamanders. Field Guide to the Frogs & other Amphibians of Africa is the first guide ever to cover all these species.

The book features a brief introduction with tips for handling and identifying amphibians. A useful illustrated guide to each family group serves as a first step towards species ID. Species accounts describe physical features, distribution, habitat, biology, advertisement calls and conservation status, and are supported by colour photographs and up-to-date distribution maps.

Field Guide to the Frogs & Other Amphibians of Africa will prove invaluable to nature lovers, tour guides, students and scientists.

The literature on snakes is voluminous but overwhelmingly centered in the natural sciences, with little published about them in the fields of popular culture or the history of medicine. Focusing primarily on American culture and history from the 1800s, this study draws on a wide range of sources--including newspaper archives, medical journals, and archives from the Smithsonian Institute--to examine the complex relationship between snakes and humans.

Arabia and the Middle East have an unusually rich herpetofauna, and this is exemplified by the region's snakes. There are almost 190 species, and this new field guide offers a way to identify them. Written by expert Damien Egan and illustrated with his brilliant digital imagery, the book consists of 87 plates, each containing two or three species, with the snakes illustrated along with comparison species and diagnostic features in detail, such as head and keel scales. A concise species text accompanies each plate, highlighting ID, ecology, habitat and prey, along with notes on venom. Introductory text covers the snakes of the region more widely, with a discussion on how and where to find them and how to study them safely. Ambitious in scope, this book will be of great interest to all herpetophiles living in or visiting this broad and diverse region.

Weighing as much as 2,000 pounds and reaching lengths of over seven feet, leatherback turtles are the world's largest reptile. These unusual sea turtles have a thick, pliable shell that helps them to withstand great depths-they can swim more than one thousand meters below the surface in search of food. And what food source sustains these goliaths? Their diet consists almost exclusively of jellyfish, a meal they crisscross the oceans to find. Leatherbacks have been declining in recent decades, and some predict they will be gone by the end of this century. Why? Because of two primary factors: human redevelopment of nesting beaches and commercial fishing. There are only twenty-nine index beaches in the world where these turtles nest, and there is immense pressure to develop most of them into homes or resorts. At the same time, longline and gill net fisheries continue to overwhelm waters frequented by leatherbacks. In The Leatherback Turtle, James R Spotila and Pilar Santidrian Tomillo bring together the world's leading experts to produce a volume that reveals the biology of the leatherback while putting a spotlight on the conservation problems and solutions related to the species. The book leaves us with options: embark on the conservation strategy laid out within its pages and save one of nature's most splendid creations, or watch yet another magnificent species disappear.

Anyone can look at a snake and see a creature unique unto itself, a reptile with a set of zoological and biological traits that are entirely its own. Just looking at this distinct animal raises many scientific questions. With regard to evolution, how did such an animal come to be? How does a snake move, and how do its sense organs differ from that of other reptiles? How does it eat, and how does it reproduce? Essentially, how does a snake "work"? In How Snakes Work: The Structure, Function and Behavior of the World's Snakes, leading zoologist Harvey B. Lillywhite has written the definitive scientific guide to the functional biology of snakes. Written for both herpetologists and a more general audience with an interest in the field, How Snakes Work features nearly two hundred color images of various species of snakes, used to provide visual examples of biological features explained in the text. Chapter topics include the evolutionary history of the snake, feeding, locomotion, the structure and function of skin, circulation and respiration, sense organs, sound production, and reproduction. Containing all the latest research and advances in our biological knowledge of the snake, How Snakes Work is an indispensable asset to professional zoologists and enthusiasts alike.

Archie Carr, one of the greatest biologists of the twentieth century, played a leading part in finding a new and critical role for natural history and systematics in a post-1950s world dominated by the glamorous science of molecular biology. With the rise of molecular biology came a growing popular awareness of species extinction. Carr championed endangered sea turtles, and his work reflects major shifts in the study of ecology and evolution. A gifted nature writer, his books on the natural history of sea turtles and their habitats in Florida, the Caribbean, and Africa entertained and educated a wide audience. Carr's conservation ethic grew from his field work as well as his friendships with the fishermen who supplied him with many of the stories he retold so engagingly. With Archie Carr as the focus, The Man Who Saved Sea Turtles explores the evolution of the naturalist tradition, biology, and conservation during the twentieth century.

This book accompanies Infectious Diseases and Pathology of Reptiles, Second Edition to cover noninfectious diseases of reptiles, meeting the need for a similar, authoritative single-source reference. The volume features color photos of normal anatomy and histology, as well as gross, light, and electron microscopic imagery of diseases. Subjects range from neoplasia, nutrition, and metabolic disease, and deposition disorders to developmental anomalies, trauma, and physical diseases, and the unique contribution of paleopathology and diseases of bone. Each chapter is supported by numerous figures, many of which are unique and cannot be found in the published literature. Readers will note that some of the chapters are based on organ system, a trend that will continue into the next edition to encompass all of the basic organ systems. This book holds the most information ever accrued into one publication on noninfectious diseases and pathology of this class of animals, providing information on every aspect of the anatomy, pathophysiology, and differential diagnosis. With up-to-the-minute data, a never-before-seen collection of images, and a stellar panel of contributors, Noninfectious Diseases and Pathology of Reptiles is the definitive resource for veterinarians, biologists, and researchers involved in the study of reptile diseases.

The underlying theme of this book is that a widespread, taxonomically diverse group of animals, important both from ecological and human resource perspectives, remains poorly understood and in delcine, while receiving scant attention from the ecological and conservation community. This volume proposes a comprehensive overview of the world's river turtles' ecology, conservation, and management. It begins with a categorization of taxa which inhabit flowing water habitats followed by information on their evolutionary and physical diversity and biogeography. Within the framework of ecology, the authors discuss the composition of river turtle communities in different types of lotic habitats and regions, population dynamics, movements, reproductive characteristics and behavior, predators, and feeding relationships. In a conservation and management section, the authors identify and evaluate the nature and intensity of factors which threaten river turtle survival--almost all of which involve direct human exploitation or indirect effects of human induced habitat alteration and degradation. They then list and evaluate the various schemes which have been proposed or employed to halt declines and restore populations, and make recommendations for future management plans for specific species and regions. In closing, they state their viewpoint concerning future research directions and priorities, and an evaluation of future prospects for survival of the world's river turtle species.

How did the zebra really get its stripes, and the giraffe its long neck? What is the science behind camel humps, leopard spots, and other animal oddities? Such questions have fascinated us for centuries, but the expanding field of evo-devo (evolutionary developmental biology) is now providing, for the first time, a wealth of insights and answers. Taking inspiration from Kipling's 'Just So Stories', this book weaves emerging insights from evo-devo into a narrative that provides startling explanations for the origin and evolution of traits across the animal kingdom. Held's unique and engaging style makes this narrative both enlightening and entertaining, guiding students and researchers through even complex concepts and encouraging a fuller understanding of the latest developments in the field. The first five chapters cover the first bilaterally symmetric animals, flies, butterflies, snakes, and cheetahs. A final chapter surveys recent results about a menagerie of other animals.