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Human Brain Evolution: The Influence of Freshwater and Marine Food Resources

Stephen Cunnane (Editor), Kathlyn Stewart (Editor)
ISBN: 978-0-470-45268-4
Hardcover
236 pages
June 2010, Wiley-Blackwell
List Price: US $171.50
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Foreword: Evolution, Encephalization, Environment vii
Phillip V. Tobias

Introduction xiii
Kathlyn M. Stewart and Stephen C. Cunnane

Contributors xix

Chapter 1 Macroevolutionary Patterns, Exaptation, and Emergence in the Evolution of the Human Brain and Cognition 1
Ian Tattersall

Introduction 1

Natural Selection 1

Macroevolution 2

Patterns in Human Evolution 3

Symbolic Cognition 5

Exaptation and Emergence 8

Large Brains and Aquatic Resources 9

References 10

Chapter 2 Long-Chain Polyunsaturated Fatty Acids in Human Brain Evolution 13
Michael A. Crawford

Introduction – Lipids and Evolution 13

The Evolution of Complex Life Forms 14

The Language of Lipids 15

DHA 17

Evolution of Homo sapiens 20

DHA and Neural Pathways? 22

A Comment on AA 24

The Third Phase of Earth’s Life History – AA and Reproduction in Mammals 25

Darwin and the Conditions of Existence 26

Implications 27

Conclusion 28

Acknowledgments 28

Notes 28

References 28

Chapter 3 Human Brain Evolution: A Question of Solving Key Nutritional and Metabolic Constraints On Mammalian Brain Development 33
Stephen C. Cunnane

Introduction 33

Brain Evolution in Hominins 35

Need for a New Paradigm 38

Brain Development 40

Energy Requirements of the Brain 41

Nutrients and Brain Function 44

Brain-Selective Nutrients 46

Critical Importance of Baby Fat in Humans 52

Gene – Nutrient Interactions 57

Conclusions 59

Acknowledgments 61

References 61

Chapter 4 Metabolic and Molecular Aspects of the Critical Role of Docosahexaenoic Acid in Human Brain Function 65
J. Thomas Brenna

Docosahexaenoic Acid (DHA) Molecular Structure 65

DHA and Neural Function 66

Metabolic and Biophysical Considerations 68

Functional Importance of DHA in Retinal and Neural Membranes 70

Dietary Need for Preformed DHA 71

DHA Intake During Pregnancy and Lactation: Effects on Higher CNS Functions of the Mother and Infant 73

Summary 74

References 74

Chapter 5 Lessons From Shorebased Hunter-Gatherer Diets Iin East Africa 77
Frits A.J. Muskiet and Remko S. Kuipers

Introduction 77

Our Genetic Background 78

Adaptation to the Conditions of Existence 79

Western Diets and the Human Genome 81

Brain-Selective Nutrients in Health and Disease 83

Dietary Fatty Acids at the Land–Water Interface 84

Tanzanian Breast Milk Fatty Acids Versus Western Recommendations 89

Estimated Fatty Acid Intakes from Shore-Based Paleolithic Diets 93

Conclusions 96

Notes 97

References 97

Appendix 103

Chapter 6 Thyroid Hormone, Iodine and Human Brain Evolution 105
Sebastiano Venturi and Michel E. Bégin

Introduction 105

Thyroid Hormone Metabolism and Function 105

Fetal Development 108

Antioxidant Activity of Iodine 108

Dietary Sources of Iodine 110

Iodine Defi ciency Disorders 111

Human Brain Evolution 113

Thyroid Hormone, Iodine, and Human Brain Evolution 117

Conclusion 118

References 119

Chapter 7 Food For Thought: The Role of Coastlines and Aquatic Resources in Human Evolution 125
Jon M. Erlandson

Introduction 125

Food for Thought 126

Human Nutrition and Physiology 127

Archaeological Evidence for the Antiquity of Fishing 128

Conclusions 132

Acknowledgments 133

Notes 133

References 133

Chapter 8 The Case for Exploitation of Wetlands Environments and Foods By Pre-Sapiens Hominins 137
Kathlyn M. Stewart

Introduction 137

Hominid Exploitation of Wetlands Environments and Resources 139

Early Hominins: Colonization of New Environments 144

Plio-Pleistocene Climate Instability and Use of Wetlands Resources 147

Intensification of Wetlands Vegetation Exploitation 149

The Shift to High-Quality Foods 151

Preconditions for Encephalization 155

Precessional Forcing, Drying Lakes/Rivers, and Die-Offs of Aquatic Faunas 157

Mammal Meat: A Later Hominin Adaptation? 158

Postscript: H. heidelbergensis and H. sapiens 160

Summary 161

Acknowledgments 162

References 162

Chapter 9 Brain Size in Carnivoran Mammals That Forage at the Land–Water Ecotone, with Implications for Robust Australopithecine Paleobiology 173
Alan B. Shabel

Introduction 173

Methods 177

Results 177

Discussion 183

Acknowledgments 186

References 186

Chapter 10 Coastal Diet, Encephalization, and Innovative Behaviors in the Late Middle Stone Age of Southern Africa 189
John Parkington

Introduction 189

Changes 190

Climate Change 196

A New Narrative 198

References 200

Chapter 11 Human Brain Evolution: A New Wetlands Scenario 203
Stephen C. Cunnane and Kathlyn M. Stewart

Human Brain Evolution 203

Neurochemical and Nutritional Evidence 203

The Fossil Evidence 204

Plausibility, Prediction, and Parsimony 205

Salient Points 206

Conclusion 207

Reference 207

Index 209

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