Contributors
Preface
Acknowledgements
1 Feeding Behavior of Lemur catta and Lemur fulvus
1. Introduction
2. Study areas
2.1. Antserananomby
2.2. Tongobato
2.3. Berenty
3. Sampling methods
3.1. General methodology
3.2. Data collection on feeding behavior
4. Feeding behavior
4.1. Feeding techniques
4.2. Feeding heights and feeding sites
4.3. Diurnal activity patterns and percentage of time spent feeding
4.4. Species composition of the diet
4.5. Parts of plants eaten
4.6. Drinking
5. Feeding behavior and social behavior
6. Predation
7. Summary and discussion
Acknowledgements
2 The Ecology and Sociology of Feeding in Indri indri
1. Methods
1.1. Introduction
1.2. Study areas
1.3. Methods of observation
1.4. Statistical analysis
2. Feeding behavior
2.1. Feeding techniques
2.2. Feeding heights and sites
2.3. The time spent feeding
2.4. Selectivity
2.5. Dietetic diversity
3. Age/sex variation in feeding behavior
3.1. Feeding rate
3.2. The time spent feeding
4. Feeding and ranging behavior
4.1. Introduction
4.2. Territory utilization and feeding
4.3. Ranging behavior and feeding
4.4. Local movements and feeding
5. Social aspects of feeding behavior
5.1. Introduction
5.2. Feeding proximity
5.3. Feeding synchrony
5.4. Feeding orders and movements
5.5. Discussion
6. General discussion
7. Summary
Acknowledgements
3 The Feeding Behavior of Propithecus verreauxi
1. Introduction
2. Study areas
2.1. Location
2.2. Forest structures
2.3. Species composition of forests
2.4. Climate
3. Sampling methods
3.1. Feeding behavior
3.2. Ranging behavior
3.3. Structure and composition of vegetation
4. Feeding behavior
4.1. Feeding techniques
4.2. Feeding heights and sites
4.3. Activity patterns
5. Regional, seasonal and local Variation in feeding behavior
5.1. Variation in species composition of diet
5.2. Variation in food parts eaten
5.3. Variation in breadth of diet
5.4. Variation in diet and abundance of foods
6. Ranging behavior
6.1. General characteristics of range utilization
6.2. Regional and seasonal variation
6.3. Exclusivity of range use
7. Discussion
Acknowledgements
4 Feeding Behavior and Social Organization in Howling Monkeys
1. Introduction
2. Methods
3. Feeding behavior
3.1. Time budgets
3.2. Feeding behavior
3.3. Feeding heights and feeding sites
3.4. Percentage of time spent eating different foods
3.5. The adaptive basis of food choices
4. Temporal patterning of food choice
4.1. Diurnal variation in food choice
5. Seasonal variation
6. Sexual variation
7. Parasitism and health
8. Feeding behavior and social organization
8.1. Troop composition
8.2. Overlap in troop range
8.3. Coevolution of feeding behavior and social behavior
9. Summary
Acknowledgements
5 Diet and Feeding Behavior of Callicebus torquatus
1. Methods and study area
2. Feeding behavior
3. Temporal patterning of food choice
4. Seasonal variation
5. Spatial variation by vegetation zone
6. Age and sex variation
7. Feeding and ranging behavior
8. Feeding behavior and social behavior
9. Discussion
10. Summary
Acknowledgements
6 Feeding Behavior of the Colombian Spider Monkey
1. Introduction
2. Study area, duration and general outline
3. Feeding behavior
3.1. Study methods
3.2. Results
3.3. Discussion
4. Activity budgets and cycles
4.1. Methods
4.2. Results
4.3. Discussion
5. Social organization
5.1. Methods
5.2. Results
5.3. Discussion
6. Summary
Acknowledgements
Appendix
7 Feeding, Ranging and Group Size in the Mangabey
1. Introduction
1.1. Methods
1.2. Study area
2. Feeding behavior
2.1. Activity patterns
2.2. Feeding heights and sites
2.3. Feeding types and techniques
3. Feeding selectivity
3.1. Degree of selectivity
3.2. Intraspecific dietary variation
3.3. Characteristics of favoured trees
3.4. Possible causes of selectivity
4. Temporal patterning of food choice
4.1. Short-term patterning
4.2. Seasonal and longer-term patterning
5. Resources and ranging patterns
6. Resources, group structure and group size
7. Discussion
8. Summary
Acknowledgements
8 Feeding Behavior and Diet of Rhesus Monkeys (Macaca mulatta) in a Siwalik Forest in North India
1. Introduction
2. Methods
2.1. Recording of behavior
2.2. Habitat analysis and description
3. Feeding behavior
3.1. The nature of feeding bouts
3.2. Composition of diet
3.3. Regional differences in diet
3.4. Seasonal variation in food choice
3.5. Feeding heights
4. Ranging behavior in relation to resource distribution
4.1. Essential features of a habitable range
4.2. Factors affecting ranging patterns
5. Feeding behavior and social behavior
5.1. General characteristics of rhesus monkey social organization
5.2. Social roles and co-ordination of foraging behavior
5.3. Foraging in relation to energy requirements
6. Summary
Acknowledgements
9 Feeding Ecology of Gelada Baboons: A Preliminary Report
1. Introduction
2. Methods
2.1. Data-recording methods
2.2. Study areas
3. Feeding behavior
3.1. Feeding techniques
3.2. Feeding heights
3.3. Diurnal pattern of feeding
3.4. Diet
3.5. Dietetic diversity and selectivity
4. Temporal and spatial variation in food choice
5. Sex differences in feeding behavior
6. Interpopulation variation
7. Feeding and ranging behavior
7.1. Food availability, band size and herd size
7.2. Seasonal variations in ranging behavior
8. Summary
Acknowledgements
10 The Guereza and Its Food
1. Introduction and methods
1.1. Introduction
1.2. Study areas
1.3. Guereza social structure
1.4. Methods, sample sizes and sample distributions
2. Feeding behavior
3. Distribution of feeding through height and time
3.1. Height of feeding
3.2. Time spent feeding and diurnal activity pattern
4. Diet composition
4.1. Frequency of consumption of different foods
4.2. Dietetic diversity
5. Food selection
5.1. Plant species selection
5.2. Plant part selection
5.3. Selection of "occasional" items
6. Temporal patterning of food choice
7. Seasonal variation in diet
8. Range utilization
8.1. Group movements
8.2. Range size and differential usage
9. Relationships between groups
10. Variation between individuals, groups and populations
10.1. Individual and group variation at Kanyawara
10.2. Interpopulation variations
11. Predation
12. Discussion
12.1. Problems of a leafy diet
12.2. Coping with indigestibility and toxicity
12.3. Habitat preference
12.4. Interpopulation differences in ranging patterns
13. Summary
Acknowledgements
Appendix : A comparison for sampling methods
11 A Comparative Study of the Feeding Strategies of Two Sympatric Species of Leaf Monkeys: Presbytis senex and Presbytis entellus
1. Introduction
2. Methods of measuring food choices
2.1. Direct observation v. stomach content
2.2. Time spent feeding
2.3. Size and distribution of observation samples
2.4. Collection a n d processing of the food samples
3. Comparison of selectivity and diversity in the langur species
3.1. The study area
3.2. Food selection by P. senex
3.3. Food selection by P. entellus
4. Seasonal variations in food choices
5. The supplying area and its relation to feeding behavior
5.1. Ranging behavior : definition of the supplying area
5.2. Distribution of food resources for P. senex
5.3. Distribution of food resources for P. entellus
6. Composition of the food supply
6.1. Composition of the food samples
6.2. Comparison of the intake of protein, lipids and glucids
6.3. Mineral intake and geophagy of the leaf monkeys
6.4. Intake of secondary compounds by the langurs
7. Discussion: physiology and feeding behavior
8. Summary
Acknowledgements
12 The Feeding Behavior of Siamang (Symphalangus syndactylus)
1. Introduction
2. Methods
2.1. Study areas
2.2. Size and distribution of observation samples
2.3. Food choice and availability
3. Feeding behavior
3.1. Feeding techniques
3.2. Feeding heights and sites
3.3. Daily activity pattern and proportion of time spent feeding
3.4. Amount of time on different foods
3.5. Food selectivity and diversity
4. Temporal patterning of food choice
4.1. Diurnal variation in food choice
4.2. Variation in food choice between days
5. Seasonal variation in food choice
6. Feeding and ranging
7. Age/sex variation in feeding
8. Feeding behavior and social organization
9. Summary
Acknowledgements
13 Feeding Behavior of Orang-utans of the Kutai Nature Reserve, East Kalimantan
1. Introduction
2. Methods
2.1. Methods of study of feeding behavior
2.2. Study area
2.3. Samples of feeding behavior
3. Feeding behavior
3.1. Feeding techniques
3.2. Feeding heights and feeding sites
3.3. Feeding and diurnal pattern of activity
3.4. Amount of time on different foods
3.5. Selectivity
3.6. Dietetic diversity
4. Temporal patterning of food choice
5. Seasonal variation
6. Spatial variation
7. Age/sex variation
7 .1 . Proportion of time spent feeding
7.2. Feeding sites
7.3. Foods eaten
8. Interpopulation variation
8.1. Stability and size of home ranges
8.2. Day ranges
8.3. General comparisons : climate and topography
9. Feeding behavior and social behavior
9.1. General aspects of social behavior
9.2. Activity budgets
9.3 . Ecological segregation
10. Summary
Acknowledgements
14 Feeding Ecology of Free-ranging Mountain Gorilla (Gorilla gorilla beringei)
1. Introduction
2. Study area and methods
3. Feeding behavior
3.1. Feeding techniques
3.2. Feeding activity
3.3. Food selection
4. Seasonal variation
5. Age/sex variation
6. Feeding behavior and ranging behavior
7. Feeding behavior and social behavior
8. Intertroop and inter population variation
9. Discussion
10. Summary
Acknowledgements
15 Feeding and Ranging Behavior of a Mountain Gorilla Group (Gorilla gorilla beringei) in the Tshibinda-Kahuzi Region (Zaire)
1. Introductions and methods
1.1. Introduction
1.2. Study area
1.3. Field methods
2. Feeding behavior
2.1. Dietetic diversity
2.2. Foraging and feeding techniques
2.3. Nutritive values of vegetation samples
2.4. Theoretical nutritional requirements and estimates of possible intakes of the study animals
3. Feeding and ranging behavior
3.1. Home range size and day journey length
3.2. Differential utilization of home range
3.3. Monthly variation of quadrat visits
4. Discussion
4.1. Dietetic diversity and the selection of food items
4.2. Regional variations and the evolution of gorilla diets
4.3. Home range utilization
4.4. Conservation
5. Summary
Acknowledgements
16 Chimpanzees of Gabon and Chimpanzees of Gombe: Some Comparative Data on the Diet
1. Introduction
2. Methods
2.1 . Comparison of study areas
2.2. Field methods
2.3 . Observation sample
3. Comparative aspects of feeding behavior
3.1. Daily variation in food intake
3.2. Feeding techniques and traditions
4. Variation in feeding and ranging behavior
4.1. Seasonal variation
4.2. Annual food intake
4.3 . Ranging patterns
5. Food composition
5.1. Variability among food categories
5.2. Protein intake
5.3. Mineral intake
5.4. Secondary compounds
6. Conclusion
7. Summary
Acknowledgements
17 Feeding Behavior of Chimpanzees in Gombe National Park, Tanzania
1. Introduction
2. Methods
2.1. Study area and study population
2.2. Observation samples
2.3. Foods eaten and food availability
3. Feeding behavior
3.1. Feeding techniques
3.2. Feeding heights
3.3. Activity budgets
3.4. Diet diversity
3.5. Time spent eating different foods
3.6. Variation with location
4. Diurnal rhythms in food choice
5. Feeding behavior and party size
6. Seasonal variation
6.1. Food availability and feeding behavior
6.2. Party size
7. Ranging behavior
7.1. Individual ranging patterns
7.2. *Food*searching
7.3. Seasonal changes
8. Discussion
9. Surrimary
Acknowledgements
18 Some Aspects of Intraspecific Variation in Feeding and Ranging Behavior in Primates
1. Introduction
2. Food choice
3. Ecological segregation and species differences in food choice
4. Inter population differences in food choice
5. Age and sex differences in feeding behavior
5.1. Feeding levels and feeding sites
5.2. Activity budgets
5.3. Food choice
6. Diurnal variation in feeding behavior
6.1. Feeding levels
6.2. Activity patterns
6.3. Food choice
7. Seasonal variation in feeding and ranging behavior
8. Summary
9. Acknowledgements
19 Species Differences in Feeding and Ranging Behavior in Primates
1. Introduction
2. Methods
3. Results
3.1. Time spent feeding on different foods
3.2. Dietetic diversity
3.3. Activity budgets
3.4. Day range length
3.5. Home range size
3.6. Population density and biomass
4. Discussion
5. Summary
Acknowledgements
Appendix I Methodology and Measurement
1. Activity budgets
2. Diet composition
3. Dietetic diversity
4. Food availability
5. Selectivity
Appendix II The Measurement of Dietetic Diversity
1. Introduction
2. The data
3. Displaying the data
4. Dietetic diversity
5. Dietetic evenness
6. Example
Acknowledgement
Appendix III Field Methods for Processing Food Samples
1. Methods for collecting samples
2. Processing food samples
3. Different types of analysis consistent with the different methods of field processing
References
Subject Index