| Contents | 7 |
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| Introduction | 17 |
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| Subterranean Rodents: News from Underground | 18 |
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| References | 24 |
| Part I Ecophysiology | 25 |
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| Adaptive Physiological Mechanisms in the Underground Dwellers | 26 |
| 2.1 Energy and Material Fluxes | 27 |
| 2.2 Neural and Hormonal Regulation | 29 |
| References | 30 |
| Microclimate in Burrows of Subterranean Rodents – Revisited | 33 |
| 3.1 Introduction | 33 |
| 3.2 Microenvironmental Parameters | 34 |
| 3.3 Further Perspectives | 42 |
| References | 43 |
| New Data onMetabolic Parameters in Subterranean Rodents | 46 |
| 4.1 Introduction | 46 |
| 4.2 Variation of Basal Metabolic Rate on Interspecific Level | 47 |
| 4.3 Variation of Resting Metabolic Rate on Intraspecific Level | 52 |
| References | 55 |
| Skimping as an Adaptive Strategy in Social Fossorial Rodents: The Mole Vole ( Ellobius talpinus) as an Example | 59 |
| 5.1 Introduction | 59 |
| 5.2 Subjects, Area and Methodological Comments | 60 |
| 5.3 Standard Metabolic Rate, Cost of Locomotion and Thermoregulation | 61 |
| 5.4 Growth and Reproduction | 62 |
| 5.5 Immune Defense | 65 |
| 5.6 Adrenocortical Response to Stress | 66 |
| 5.7 Conclusion | 67 |
| References | 68 |
| The Reproductive Physiology and Endocrinology of the African Mole-rats: with Special Reference to Southern African Mole-rat Species | 71 |
| 6.1 Introduction | 71 |
| 6.2 Reproductive Strategies in Solitary and Social African Mole- rats | 72 |
| 6.3 Seasonal Breeding in Social Mole-rats | 79 |
| 6.4 Induced vs Spontaneous Ovulation and the Role of Penile Ornamentation | 80 |
| 6.5 Habitat Shapes the Reproductive Physiology of African Mole- rats | 81 |
| 6.6 Monopolization of Reproduction: Plural Breeding in Males and Females | 82 |
| 6.7 Perspective | 83 |
| References | 84 |
| Part II Sensory Ecology | 89 |
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| Sensory Ecology of Subterranean Rodents | 90 |
| References | 92 |
| Using Odors Underground | 94 |
| 8.1 Introduction | 94 |
| 8.2 Foraging Underground | 95 |
| 8.3 Recognizing and Discriminating Between Conspecifics Underground | 96 |
| 8.4 Conclusion | 103 |
| References | 103 |
| Acoustics, Audition and Auditory System | 106 |
| 9.1 Introduction | 106 |
| 9.2 Acoustics in Burrows | 107 |
| 9.3 Hearing in Subterranean Rodents | 108 |
| 9.4 Morphological Adaptations of the Ear | 112 |
| 9.5 Synthesis | 117 |
| References | 118 |
| Acoustic Communication in Subterranean Rodents | 121 |
| 10.1 Introduction | 121 |
| 10.2 Adult Vocalizations | 122 |
| 10.3 Juvenile Vocalizations: Are Care-elicitation Calls Honest Advertisements of Offspring Need? | 131 |
| 10.4 Conclusion | 133 |
| References | 133 |
| Visual Systems and the Role of Vision in Subterranean Rodents: Diversity of Retinal Properties and Visual System Designs | 136 |
| 11.1 Introduction | 136 |
| 11.2 EyeMorphology | 136 |
| 11.3 Retina | 137 |
| 11.4 Optic Nerve (ON) | 146 |
| 11.5 Subcortical Visual System | 148 |
| 11.6 Visual Cortex | 157 |
| 11.7 Oculomotor Nuclei | 159 |
| 11.8 Role of Vision | 159 |
| 11.9 Chronobiology | 161 |
| References | 162 |
| Magnetic Compass: A Useful Tool Underground | 168 |
| 12.1 Introduction | 168 |
| 12.2 Available Information: From Earth to Animal | 169 |
| 12.3 Compass Mode: From Behavioural Experiment to Proof | 170 |
| 12.4 Transduction Mechanisms: From Signal to Receptor | 173 |
| 12.5 Neuronal Processing: From Receptor to Brain | 176 |
| References | 177 |
| Adaptive Neural Organization of Naked Mole- Rat Somatosensation ( and Those Similarly Challenged) | 182 |
| 13.1 Introduction | 182 |
| 13.2 Naked Mole-rat Body Hairs | 182 |
| 13.3 Somatosensation and Behavior | 184 |
| 13.4 Somatosensory Specializations in the Central Nervous Systemof Naked Mole-rats | 190 |
| 13.5 Comparisons to Star-Nosed Moles | 193 |
| 13.6 New Directions: Unique Somatic Organization for Processing Painful Stimuli | 195 |
| 13.7 Conclusion | 197 |
| References | 198 |
| Part III Life Histories, Behavioural Ecology, Demography | 201 |
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| From Natural Histories to Life Histories – A Homage to a Comparative Approach | 202 |
| How and Where to Go from Here? | 206 |
| References | 207 |
| Giant Mole-rats, Fukomys mechowii, 13 Years on the Stage | 209 |
| 15.1 Introduction | 209 |
| 15.2 Taxonomy, Nomenclature and Phylogeny | 210 |
| 15.3 Morphology of the Giant Mole-rats | 211 |
| 15.4 Distribution | 213 |
| 15.5 Burrow Systems | 214 |
| 15.6 Food | 215 |
| 15.7 Colony Size and Structure | 216 |
| 15.8 Sex Ratio | 217 |
| 15.9 Surface Activity | 218 |
| 15.10 Economic Importance | 219 |
| References | 221 |
| Biology of the Silvery Mole-rat ( Heliophobius argenteocinereus). Why Study a Neglected Subterranean Rodent Species? | 224 |
| 16.1 Introduction | 224 |
| 16.2 Taxonomy and Body Size | 225 |
| 16.3 Population Density and Structure | 227 |
| 16.4 Food and Habitat Preferences | 228 |
| 16.5 Burrow Systems and Burrowing | 229 |
| 16.6 Reproduction | 229 |
| 16.7 Economic and Epidemiological Importance | 233 |
| 16.8 Parasites and Sociality in African Mole-rats | 233 |
| 16.9 Evolution of Sociality in the African Mole-rats | 234 |
| 16.10 Further Perspectives | 236 |
| References | 237 |
| The Biology and Ecology of Plateau Zokors ( Eospalax fontanierii) | 240 |
| 17.1 Introduction | 240 |
| 17.2 Morphological Characteristics | 241 |
| 17.3 Physiological Characteristics | 241 |
| 17.4 Habitat Selection and Distribution | 243 |
| 17.5 Burrow Systemand Environment | 243 |
| 17.6 Foraging and Diet | 244 |
| 17.7 Activity Rhythms | 244 |
| 17.8 Reproduc
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