Sasol Eerste Veldgids tot Slange & Ander Reptiele van Suider-Afrika bied aan die jong leser 'n fassinerende blik op die reptiele van die streek. Met behulp van volkleur fotoÆs en verspreidings kaarte, asook maklik leesbare teks, sal die jong volwassene en ontluikende natuur liefhebber die algemene reptielspesies in Suider-Afrika kan identifiseer.

This volume, 9B, covers the infraorders of the Astacidea that were not covered in volume 9A (Enoplometopoidea, Nephropoidea and Glypheidea) as well as the Axiidea, Gebiidea and Anomura. With the publication of this ninth volume in the "Treatise on Zoology: The Crustacea," we depart from the sequence one would normally expect. Some crustacean groups never had a French version produced, namely, the orders Stomatopoda, Euphausiacea, Amphionidacea, and Decapoda; the largest contingent of these involved Decapoda a group of tremendous diversity and for which we have great depth of knowledge. The organization and production of these new chapters began independently from the other chapters and volumes. Originally envisioned by the editorial team to encompass volume 9 of the series, it quickly became evident that the depth of material for such a volume must involve the printing of separate fascicles. These new chapters are now nearing completion, and the decision was made to begin publication of volume 9 immediately rather than wait until after volumes 3 through 8 would appear.

Providing an appealing chronology of "all things dinosaur," this book covers these ancient creatures' roles and surprising importance in science, religion, and society at large. This exhaustive, up-to-date book contains more than 2,000 entries about dinosaurs and dinosaur-related topics. It provides not only detailed information about their discovery, underlying science, and recent technologies and theories but also encompasses all of the facets of dinosaurs in society-for example, their use in consumer marketing and promotion, popularization of dinosaurs in the media, as "proof" for both evolutionists and creationists to substantiate their claims about life's origins, and as cultural artifacts. Organized chronologically, the book offers an informative and entertaining timeline of how dinosaurs have appeared in science, religion, and society since they were discovered in the 1800s, covering everything from dinosaur museum displays to how dinosaurs served advocates of young-Earth creationism. This fascinating work enables a broad appreciation for the surprising significance of dinosaurs in many aspects of our daily lives and modern society. Depicts the history, breadth, depth, and diversity of how humans have learned about, argued over, and made use of dinosaurs-a resource appropriate for public, school, or academic libraries Examines the events of the earliest discoveries of fossilized remains of dinosaurs and how those discoveries often became interwoven with religious ideas Includes photographs, a glossary, an appendix of geological time, and a detailed, cross-referenced index to assist researchers and general readers

Provides a comprehensive systematic review of the African proboscidean fossil record Includes a summary of taxonomy, geochronology, biogeography and morphology Documents major faunal events including those associated with hominin origins Synthesizes new data from genomic, isotopic and microware analyses Emphasizes the role of elephants in ecosystems and the importance of conservation

This book looks at how three kinds of strongly electric fishes literally became "electrical," and how they helped to change the sciences and medicine. These fishes are the flat torpedo rays common to the Mediterranean, the electric catfishes of Africa, and an "eel" from South America. The discovery of the electrical nature of these fishes in the second half of the 18th century was the starting point of the two fundamental advances in the sciences: on the physiological side, the demonstration that nerve conduction and muscle excitation are electrical phenomena, and on the physical side, the invention of the electric battery. Starting with catfish tomb drawings from Ancient Egypt and colorful descriptions of torpedoes from the Classical Era, the authors show how these fishes were both fascinating and mysterious to the ancients. After all, not only could they produce torpor and temporary numbness when touched, they could stun through intermediaries, such as wet nets and spears.
Various explanations were given for these remarkable actions in ancient times, including the idea that they might release some sort of cold venom. Through the Renaissance, they also tended to be associated with occult and magical qualities. During the 1600s, natural philosophers speculated that rapid movements of specialized muscles could account for their actions. This idea was widely accepted until the 1750s, when the possibility that their shocks might be electrical began to be discussed.
Showing how researchers set forth to provide support for fish electricity is a major focus of this book. Here the authors transport us into the jungles of South America and later show how some live eels were transported to London, where John Walsh demonstrated in1776 that they can actually spark.
Subsequent chapters deal with further evidence for specialized fish electricity and how electric fishes helped to change ideas about even our own physiology. The authors also show how these fish remained a part of medicine, and how Volta modeled his revolutionary "pile" or electric battery on their anatomy.
From beginning to end, this drama is firmly anchored in the philosophy and science of the day. Moreover, with biographical information about the key players, readers can fully appreciate what they were thinking as they tried to understand one of Nature's greatest puzzles - a mystery that would transform nerve and muscle physiology in ways that earlier generations could not have anticipated. Although a scholarly volume, the book's style is generally narrative and, with its hundreds of magnificent illustrations, it should appeal to a large audience.

In this, the first of two ground-breaking volumes on the nature of language in the light of the way it evolved, James Hurford looks at how the world first came to have a meaning in the minds of animals and how in humans this meaning eventually came to be expressed as language. He reviews a mass of evidence to show how close some animals, especially primates and more especially apes, are to the brink of human language. Apes may not talk to us but they construct rich cognitive representations of the world around them, and here, he shows, are the evolutionary seeds of abstract thought - the means of referring to objects, the memory of events, even elements of the propositional thinking philosophers have hitherto reserved for humans. What then, he asks, is the evolutionary path between the non-speaking minds of apes and our own speaking minds? Why don't apes communicate the richness of their thoughts to each other? Why do humans alone have a unique disposition to reveal their thoughts in complex detail? Professor Hurford searches a wide range of evidence for the answers to these central questions, including degrees of trust, the role of hormones, the ability to read minds, and the willingness to cooperate.
Expressing himself congenially in consistently colloquial language the author builds up a vivid picture of how mind, language, and meaning evolved over millions of years. His book is a landmark contribution to the understanding of linguistic and thinking processes, and the fullest account yet published of the evolution of language and communication.
"A wonderful read - lucid, informative, and entertaining, while at the same time never talking down to the reader by sacrificingargumentation for the sake of 'simplicity'. Likely to be heralded as the major publication dealing with language evolution to date. Frederick J. Newmeyer, University of Washington

The sheath nematodes belonging to the superfamily Hemicycliophoroidea are unique amongst all plant parasitic nematodes known to man due to the presence of an extra cuticular covering or sheath over the inner cuticle and body of all juvenile and adult life stages. These plant-parasitic nematodes include species of agricultural and quarantine importance. In Systematics of the Sheath Nematodes of the Superfamily Hemicycliophoroidea John Chitambar and Sergei Subbotin provide a detailed review of the taxonomy and diagnosis of the superfamily, its member genera and 153 related species based on their morphological and molecular analyses, as well as a further understanding of the relationships within the superfamily using molecular phylogenetics. In addition, Chitambar and Subbotin also give detailed information on the global distribution, biology, host-parasite relationships and ecology of sheath nematodes.

Fungal growths affect both human and animal well-being. Many natural pathogens of laboratory animals alter host physiology, rendering the host unsuitable for experimental uses. While the number and prevalence of few pathogens have declined considerably, many still turn up in laboratory animals and represent unwanted variables in research. Investigators using laboratory animals in biomedical experimentation should be aware of the profound effects that many of these agents can have on research. What does the future hold regarding the natural pathogens of laboratory animals? The selection of an animal model must carefully address issues of the type of human disease to mimic, the parameters to follow, and the collection of the appropriate data to answer those questions being asked. Overall, animal models of fungal infection will continue to deepen our understanding of how these infections occur. This book provides a valuable source of information to biological and biomedical scientists and to clinical and doctoral researchers working in the area of fungal infections and diseases of laboratory animal species.

A valuable new reference on insect behavior, this exceptional new text delves into the primary sensory communication system used by most insects -- their sense of smell. This important text covers how insects produce pheromones and how they detect pheromones and plant volatiles. Since insects rely on pheromone detection for both feeding and breeding, a better understanding of insect olfaction and pheromone biosynthesis could help curb the behavior of pests without the use of harmful pesticides and even help to reduce the socio-economic impacts associated to human-insect interactions.
* Covers biochemistry and molecular biology of insect pheromone production
* Explains pheromone production in moths, beetles, flies, and social insects
* Describes pheromone and plant volatile reception