Tabs for Contents, notes, highlights

Hide Contents, Notes, and Highlights

Search TermsShow Hide

« Back to eTextbook

Primate Field Studies, i
Copyright, vi
List of Figures, xiv
List of Tables, xvi
Preface, xviii
1. History of Gibbon Field Studies: Monogamy, Frugivory, and Territoriality, 1
The Gibbon Pattern, 2
Historical Background, 5
A Study of Anthropoid Life, 5
The Asiatic Primate Expedition, 7
The Postwar Period, 11
The Siamang in Malaya, 13
The Proliferation of Small Ape Research, 14
Sexual Behavior and Social Bonds, 15
Unanswered Questions, 17
Foraging Adaptations in Primates, 18
2. Study Animals, Study Site, and Methods, 20
Overview of the Hylobatidae, 21
Gibbon Evolution and Taxonomy, 21
Appearance, 22
Vocalizations, 24
Description of the Study Area, 25
Thai Forests, 25
Khao Yai National Park, 26
The Mo Singto Study Area, 28
Seasonal Availability of Resources, 30
Overview of Behavioral Data Collection, 33
Study Groups, 33
Data Collection, 34
Data Analysis, 36
3. Activity Budgets and Social Behavior, 39
Overview of the Gibbon Day, 41
Methods Specific to This Chapter, 41
Data Analysis, 42
Results, 43
Activity Period, 43
Annual Activity Budget, 43
Diurnal Activity Cycle, 43
Monthly Activity Budget, 45
Age-Sex Differences in Activity Budget, 46
Intragroup Social Interactions, 48
Discussion, 53
Activity Budgets and Resource Availability, 53
Activity Period and Predator Pressure, 54
Age-Sex Differences in Activity Budgets, 56
Gibbon Social Behavior, 57
Chapter Summary and Conclusions, 60
4. Diet and Feeding Behavior, 62
Overview of Gibbon Feeding Behavior, 63
Methods Specific to This Chapter, 65
Data Analysis, 66
Results, 66
Annual Diet, 66
Monthly Variation in Diet, 72
Dietary Diversity, 73
Dietary Selectivity, 74
Fruit Patch Visits, 76
Patch Size, 78
Encounters Between Species, 78
Drinking Behavior, 79
Discussion, 80
Annual Diet, 80
Monthly Variation in Diet, 81
Insectivory, 82
Keystone Resources, 82
Do Gibbons Prefer Figs over Other Fruit?, 84
What Is the Gibbon Feeding Niche?, 85
Chapter Summary and Conclusions, 86
5. Ranging Behavior, 87
Overview of Gibbon Range Use, 89
Methods Specific to This Chapter, 90
Data Analysis, 90
Results, 91
Daily Path Length, 91
Day Range and Rainfall, 93
Home Range, 94
Ranging Behavior and Diet, 96
Travel Order and Group Leadership, 98
Discussion, 98
Variation in Daily Path Length, 98
Home Range, 100
Group Leadership, 101
Chapter Summary and Conclusions, 102
6. Territoriality and Intergroup Encounters, 103
Overview of Intergroup Encounters, 104
Methods Specific to This Chapter, 105
Data Analysis, 105
Results, 106
Gibbon Duets, 106
Intergroup Encounters, 107
Interactions Between Males and Females During Encounters, 110
Monthly Variation in Encounter Rates, 111
Territory Size, 112
Index of Defendability, 114
Discussion, 114
Male and Female Behavior During Group Encounters, 114
Home-Range Overlap, 116
Monthly Variation in Territorial Activity, 117
Defendability, 118
Territorial Calls, 118
Chapter Summary and Conclusions, 119
7. Gibbon Socioecology, 120
Seasonal Ecology of White-Handed Gibbons, 122
Seasonal Variation in Diet, 122
Flexible Versus Stable Foraging in Primates, 125
The Evolution of Monogamous Social Systems, 127
Females-as-Resource Models, 128
Male Assistance Models, 130
Monogamy, Patch Size, and Resource Defense Territoriality, 133
Are Gibbons Small-Patch Specialists?, 135
Group Size and Patch Size in Other Primates, 136
Social Monogamy and Resource Density, 137
Multimale and Multifemale Gibbon Groups, 140
Mating Monogamy in Gibbons, 143
Conclusion, 146
Endnotes, 147
8. Summary and Directions for Future Research, 148
Nutritional and Cognitive Ecology in Gibbons, 149
Wildlife Conservation, 150
References, 153
Index, 167

Search Results

« Back to eTextbook


PAGE	Description

42	...

Tabs for Contents, notes, highlights

Table of Contents

Search Results