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Overview
Drawing on extensive research, Isbell further speculates how snakes could have influenced the development of a distinctively human behavior: our ability to point for the purpose of directing attention. A social activity (no one points when alone) dependent on fast and accurate localization, pointing would have reduced deadly snake bites among our hominin ancestors. It might have also figured in later human behavior: snakes, this book eloquently argues, may well have given bipedal hominins, already equipped with a non-human primate communication system, the evolutionary nudge to point to communicate for social good, a critical step toward the evolution of language, and all that followed.
Product Details
ISBN-13: | 9780674061965 |
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Publisher: | Harvard University Press |
Publication date: | 09/30/2011 |
Pages: | 224 |
Product dimensions: | 6.10(w) x 9.10(h) x 0.60(d) |
About the Author
Table of Contents
- Preface
- 1. Introduction
- 2. Primate Biogeography
- 3. Why Did Primates Evolve?
- 4. Primate Vision
- 5. Origins of Modern Predators
- 6. Vision and Fear
- 7. Venomous Snakes and Anthropoid Primates
- 8. Why Only Primates?
- 9. Testing the Snake Detection Theory
- Epilogue: Implications for Humans
- Appendix
- References
- Acknowledgments
- Index
What People are Saying About This
In a wide ranging, scholarly volume that is both provocative and enjoyable, Lynne Isbell develops her novel thesis that exceptional aspects of vision in humans and other primates evolved largely to help detect and avoid venomous snakes. Isbell cites the widespread fear of snakes in humans and other primates as clear evidence that they have been a danger over our evolutionary past. The book takes us on a tour of relevant scientific disciplines as Isbell reveals theories of the selective pressures thought to be important in the evolution of primates, presents the basics of the visual systems of primates, and discusses the impact of snakes and other predators on the primate survival. Isbell argues that differences in the visual systems of primates are at least partly the result of New World monkeys and Madagascar prosimian evolving in landmasses without venomous snakes. While Isbell's proposal is sure to generate some controversy, the scope and depth of her present volume is impressive.
Successful reconstruction of evolutionary history is like the very best detective work. It takes dogged collection of evidence,
scientific testing wherever possible and careful application of logic every step of the way. In this presentation of her innovative Snake Detection Theory, Lynne Isbell effectively takes the reader on a voyage of discovery, notching up vital clues along the way. The text — stimulating, entertaining and above all instructive — presents the idea that evolution of special features of the visual system in primates was linked to the threat from snakes, which is real only when they are close by. In short, the author traces snake phobia back to early primate origins. The problem is more than theoretical: one estimate gives 150,000 human deaths a year from snakebites, mainly in the tropics. In assembling the evidence, drawing on her extensive experience of studing primates in the field, Isbell covers a great deal of other topics, ranging from continental drift through molecular systematics and on to neurobiology. In passing, she builds in her independent conclusion that primates must have originated far earlier than the known fossil record suggests, leading her to favour the "Out of India" model of their origins. This proposal is now supported by abundant molecular evidence but still encounters fierce resistance from paleontologists. Isbell's Snake Detection Theory is no less controversial, but she has compiled her case with care. At the very least, primatologists (including myself) will henceforth have to pay more attention to snakes in theory as well as in practice.
Robert Martin, Field Museum
The Fruit, the Tree, and the Serpent expertly summarizes everything from reptile evolution and field observations of primates to the biochemistry of vision and the neurobiology of fear. More importantly Lynne Isbell's snake detection theory offers a cohesive explanation for many uniquely primate attributes and even has implications for the origin of language in humans. Her first-rate scholarship will inspire new waves of research in a wide range of disciplines and this reader-friendly book will reward anyone interested in its subjects.
Harry W. Greene, Cornell professor of ecology and evolutionary biology and author of Snakes: the Evolution of Mystery in Nature
This book is an intellectual tour de force that would have pleased Charles Darwin. Isbell presents a well-argued case for the startling thesis that snakes have played a key role in shaping evolution of the primate brain. Her comparative perspective draws on geology, paleontology, biogeography, molecular biology, genetics, biological anthropology, nutrition, neuroscience, and psychology. An engaged, lively, and lucid writer, Isbell makes even complex arguments accessible. Her book should be of great interest to biologists, neuroscientists, psychologists, and anyone who wonders who we humans are.
Arne Öhman, Karolinska Institutet
In a wide ranging, scholarly volume that is both provocative and enjoyable, Lynne Isbell develops her novel thesis that exceptional aspects of vision in humans and other primates evolved largely to help detect and avoid venomous snakes. Isbell cites the widespread fear of snakes in humans and other primates as clear evidence that they have been a danger over our evolutionary past. The book takes us on a tour of relevant scientific disciplines as Isbell reveals theories of the selective pressures thought to be important in the evolution of primates, presents the basics of the visual systems of primates, and discusses the impact of snakes and other predators on the primate survival. Isbell argues that differences in the visual systems of primates are at least partly the result of New World monkeys and Madagascar prosimian evolving in landmasses without venomous snakes. While Isbell's proposal is sure to generate some controversy, the scope and depth of her present volume is impressive.
Jon Kaas, Vanderbilt University