The macronutrient composition of wild and cultivated plant foods of West African chimpanzees (Pan troglodytes verus) inhabiting an anthropogenic landscape.
Pan troglodytes verus
anthropogenic landscape
crop-foraging
human-primate coexistence
nutritional ecology
oil palm
Journal
American journal of primatology
ISSN: 1098-2345
Titre abrégé: Am J Primatol
Pays: United States
ID NLM: 8108949
Informations de publication
Date de publication:
03 2020
03 2020
Historique:
received:
19
06
2019
revised:
17
01
2020
accepted:
20
01
2020
pubmed:
1
2
2020
medline:
1
9
2020
entrez:
1
2
2020
Statut:
ppublish
Résumé
Agricultural expansion encroaches on tropical forests and primates in such landscapes frequently incorporate crops into their diet. Understanding the nutritional drivers behind crop-foraging can help inform conservation efforts to improve human-primate coexistence. This study builds on existing knowledge of primate diets in anthropogenic landscapes by estimating the macronutrient content of 24 wild and 11 cultivated foods (90.5% of food intake) consumed by chimpanzees (Pan troglodytes verus) at Bossou, Guinea, West Africa. We also compared the macronutrient composition of Bossou crops to published macronutrient measures of crops from Bulindi, Uganda, East Africa. The composition of wild fruits, leaves, and pith were consistent with previous reports for primate diets. Cultivated fruits were higher in carbohydrates and lower in insoluble fiber than wild fruits, while wild fruits were higher in protein. Macronutrient content of cultivated pith fell within the ranges of consumed wild pith. Oil palm food parts were relatively rich in carbohydrates, protein, lipids, and/or fermentable fiber, adding support for the nutritional importance of the oil palm for West African chimpanzees. We found no differences in the composition of cultivated fruits between Bossou and Bulindi, suggesting that macronutrient content alone does not explain differences in crop selection. Our results build on the current understanding of chimpanzee feeding ecology within forest-agricultural mosaics and provide additional support for the assumption that crops offer primates energetic benefits over wild foods.
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e23102Subventions
Organisme : Leading graduate program U04
Pays : International
Organisme : core-to-core CCSN
Pays : International
Organisme : Copenhagen Zoo Conservation Research Grant
Pays : International
Organisme : Ministry of Education, Culture, Sports, Science and Technology
ID : 16H06283
Pays : International
Organisme : Ministry of Education, Culture, Sports, Science and Technology
ID : 24000001
Pays : International
Organisme : Sigma-Xi the Scientific Research Society
Pays : International
Informations de copyright
© 2020 Wiley Periodicals, Inc.
Références
Agunbiade, J., Wiseman, J., & Cole, D. (1999). Energy and nutrient use of palm kernels, palm kernel meal and palm kernel oil in diets for growing pigs. Animal Feed Science Technology, 80, 165-181. https://doi.org/10.1016/s0377-8401(99)00070-x
Akpanabiatu, M., Ekpa, O., Mauro, A., & Rizzo, R. (2001). Nutrient composition of Nigerian palm kernel from the dura and tenera varieties of the oil palm (Elaeis guineensis). Food Chemistry, 72, 173-177. https://doi.org/10.1016/s0308-8146(00)00215-6
Altmann, J., & Muruthi, P. (1988). Differences in daily life between semiprovisioned and wild-feeding baboons. American Journal of Primatology, 15, 213-221. https://doi.org/10.1002/ajp.1350150304
Association of Official Analytical Chemists. (1990). Official methods of analysis. Arlington, VA: AOAC.
Beasley, J., & Rhodes, O. (2008). Relationship between racoon abundance and crop damage. Human-Wildlife Conflict, 2, 248-259.
Bessa, J., Sousa, C., & Hockings, K. (2015). Feeding ecology of chimpanzees (Pan troglodytes verus) inhabiting a forest-mangrove-savanna-agricultural matrix at Caiquene-Cadique, Cantanhez National Park, Guinea-Bissau. American Journal of Primatology, 77, 651-665. https://doi.org/10.1002/ajp.22388
Bora, P., Rocha, R., Narain, N., Moreira-Monteiro, A., & Moreira, R. (2003). Characterization of principal nutritional components of Brazilian oil palm (Eliaes guineensis) fruits. Bioresource Technology, 87, 1-5. https://doi.org/10.1016/s0960-8524(02)00223-7
Brennan, E., Else, J., & Altmann, J. (1985). Ecology and behaviour of a pest primate: Vervet monkeys in a tourist-lodge habitat. African Journal of Ecology, 23, 35-44. https://doi.org/10.1111/j.1365-2028.1985.tb00710.x
Brncic, T., Amarasekaran, B., & McKenna, A. (2010). Sierra Leone national chimpanzee census. Freetown, Sierra Leone: Tacugama.
Bryson-Morrison, N. (2017). Habitat use and nutrition of chimpanzees in an anthropogenic landscape: A case study in Bossou, Guinea, West Africa (PhD thesis). University of Kent.
Bryson-Morrison, N., Matsuzawa, T., & Humle, T. (2016). Chimpanzees in an anthropogenic landscape: Examining food resources across habitat types at Bossou, Guinea, West Africa. American Journal of Primatology, 78, 1237-1249. https://doi.org/10.1002/ajp.22578
Bryson-Morrison, N., Tzanopoulos, J., Matsuzawa, T., & Humle, T. (2017). Activity and habitat use of chimpanzees (Pan troglodytes verus) in the anthropogenic landscape of Bossou, Guinea, West Africa. International Journal of Primatology, 38, 282-302. https://doi.org/10.1007/s10764-016-9947-4
Campbell-Smith, G., Campbell-Smith, M., Singleton, I., & Linkie, M. (2011). Raiders of the lost bark: Orangutan foraging strategies in a degraded landscape. PLOS One, 6, e20962. https://doi.org/10.1371/journal.pone.0020962
Cancelliere, E., Chapman, C., Twinomugisha, D., & Rothman, J. (2018). The nutritional value of feeding on crops: Diets of vervet monkeys in a humanized landscape. African Journal of Ecology, 56, 160-167. https://doi.org/10.1111/aje.12496
Carlson, B., Rothman, J., & Mitani, J. (2013). Diurnal variation in nutrients and chimpanzee foraging behavior. American Journal of Primatology, 75, 342-349. https://doi.org/10.1002/ajp.22112
Chapman, C., Chapman, L., Rode, K., Hauck, E., & McDowell, L. (2003). Variation in the nutritional value of primate foods: Among trees, time periods, and areas. International Journal of Primatology, 24, 317-333. https://doi.org/10.1023/a:1023049200150
Chapman, C., Speirs, M., Gillespie, T., Holland, T., & Austad, K. (2006). Life on the edge: Gastrointestinal parasites from the forest edge and interior primate groups. American Journal of Primatology, 68, 397-409. https://doi.org/10.1002/ajp.20233
Conklin, N., & Wrangham, R. (1994). The value of figs to a hind-gut fermenting frugivore: A nutritional analysis. Biochemistry Systematics and Ecology, 22, 137-151. https://doi.org/10.1016/0305-1978(94)90004-3
Conklin, N., Wrangham, R., & Hunt, K. (1998). Dietary response of chimpanzees and cercopithecines to seasonal variation in fruit abundance. II Macronutrients. International Journal of Primatology, 19, 971-998. https://doi.org/10.1023/a:1020370119096
Conklin-Brittain, N., Knott, C., & Wrangham, R. (2006). Energy intake by wild chimpanzees and orangutans: Methodological considerations and a preliminary comparison. In G. Hohmann, M. Robbins & C. Boesch (Eds.), Feeding ecology in apes and other primates (pp. 445-472). Cambridge: Cambridge University Press.
Dostaler, S., Ouellet, J., Therrien, J., & Cote, S. (2011). Are feeding preferences of white-tailed deer related to plant constituents? Journal of Wildlife Management, 75, 913-918. https://doi.org/10.1002/jwmg.118
Felton, A., Felton, A., Lindenmayer, D., & Foley, W. (2009). Nutritional goals of wild primates. Functional Ecology, 23, 70-78. https://doi.org/10.1111/j.1365-2435.2008.01526.x
Forthman-Quick, D., & Demment, M. (1988). Dynamics of exploitation: Differential energetic adaptations of two troops of baboons to recent human contact. In J. Fa & C. Southwick (Eds.), The ecology and behavior of food-enhanced primate groups (pp. 25-51). New York: Alan Liss.
Ganzhorn, J. (1995). Low-level forest disturbance effects on primary production, leaf chemistry, and lemur populations. Ecology, 76, 2084-2096. https://doi.org/10.2307/1941683
Garber, P., Righini, N., & Kowalewski, M. (2015). Evidence of alternative dietary syndromes and nutritional goals in the genus Alouatta. In M. M. Kowaleski, P. Garber, L. Cortes-Ortiz, B. Urbani & D. Youlatos (Eds.), Howler monkeys: Behavior, ecology, and conservation (pp. 85-109). New York: Springer.
Garriga, R., Marco, I., Casas-Diaz, E., Acevedo, P., Amarasekaran, B., Cuadrado, L., & Humle, T. (2019). Factors influencing wild chimpanzee (Pan troglodytes verus) relative abundance in an agriculture-swamp matrix outside protected areas. PLOS ONE, 14, e0215545. https://doi.org/10.1371/journal.pone.0215545
Ghiglieri, M. (1984). The chimpanzees of Kibale Forest: A field study of ecology and social structure. New York: Columbia University Press.
Goodall, J. (1986). The chimpanzees of Gombe: Patterns of behavior. Cambridge: Harvard University Press.
Gruber, T., Luncz, L., Morchen, J., Schuppli, C., & Kendal, R. L. (2019). Cultural change in animals: A flexible behavioural adaptation to human disturbance. Palgrave Communications, 5, 9. https://doi.org/10.1057/s41599-019-0271-4
Hill, C. (1997). Crop-raiding by wild vertebrates: The farmer's perspective in an agricultural community in western Uganda. International Journal of Pest Management, 43, 77-84. https://doi.org/10.1080/096708797229022
Hill, C. (2000). Conflict of interest between people and baboons: Crop raiding in Uganda. International Journal of Primatology, 21, 299-315. https://doi.org/10.1023/a:1005481605637
Hill, C. (2005). People, crops and primates: A conflict of interests. In J. Paterson & J. Wallis (Eds.), Primate commensalism and conflict. Special topics in primatology (pp. 40-59). Oklahoma: American Society of Primatologists.
Hoare, R. (2001). Management implications of new research on problem elephants. Pachyderm, 30, 44-48.
Hockings, K. (2007). Human-chimpanzee coexistence at Bossou, the Republic of Guinea: A chimpanzee perspective (PhD Thesis). University of Stirling.
Hockings, K., Anderson, J., & Matsuzawa, T. (2009). Use of wild and cultivated foods by chimpanzees at Bossou, Republic of Guinea: Feeding dynamics in a human-influenced environment. American Journal of Primatology, 71, 636-646. https://doi.org/10.1002/ajp.20698
Hockings, K., & Humle, T. (2009). Best practice guidelines for the prevention and mitigation of conflict between humans and great apes. Gland, Switzerland: IUCN/SSC Primate Specialist Group.
Hockings, K., & McLennan, M. (2012). From forest to farm: Systematic review of cultivar feeding by chimpanzees-management implications for wildlife in anthropogenic landscapes. PLOS One, 7, e33391. https://doi.org/10.1371/journal.pone.0033391
Hockings, K. (2011). The crop-raiders of the sacred hill. In T. Matsuzawa, T. Humle & Y. Sugiyama (Eds.), The chimpanzees of Bossou and Nimba (pp. 211-220). New York: Springer.
Hohmann, G., Potts, K., N'Guessan, A., Fowler, A., Mundry, R., Ganzhorn, J., & Ortmann, S. (2010). Plant foods consumed by Pan: Exploring the variation of nutritional ecology across Africa. American Journal of Physical Anthropology, 141, 476-485. https://doi.org/10.1002/ajpa.21168
Houle, A., Conklin-Brittain, N., & Wrangham, R. (2014). Vertical stratification of the nutritional value of fruit: Macronutrients and condensed tannins. American Journal of Primatology, 76, 1207-1232. https://doi.org/10.1002/ajp.22305
Humle, T., & Hill, C. (2016). People-primate interactions: Implications for primate conservation. In S. Wich & A. Marshall (Eds.), An introduction to primate conservation (pp. 219-240). Oxford: Oxford University Press.
Humle, T., Koops, K., & Cherif, P. (2011). Appendix B: Plant food list of Bossou chimpanzees. In T. Matsuzawa, T. Humle & Y. Sugiyama (Eds.), The chimpanzees of Bossou and Nimba (pp. 406-411). New York: Springer.
Humle, T., Maisels, F., Oates, J., Plumptre, A., & Williamson, E. (2016). Pan troglodytes, The IUCN red list of threatened species. Retrieved from http://www.iucnredlist.org
Humle, T., & Matsuzawa, T. (2004). Oil palm use by adjacent communities of chimpanzees at Bossou and Nimba Mountains, West Africa. International Journal of Primatology, 25, 551-581. https://doi.org/10.1023/b:ijop.0000023575.93644.f4
Humle, T. (2011). Location and ecology. In T. Matsuzawa, T. Humle & Y. Sugiyama (Eds.), The chimpanzees of Bossou and Nimba (pp. 13-21). New York: Springer.
Keuling, O., Stier, N., & Roth, M. (2009). Commuting, shifting or remaining?: Different spatial utilisation patterns of wild boar Sus scrofa L. in forest and field crops during summer. Mammal Biology, 74, 145-152. https://doi.org/10.1016/j.mambio.2008.05.007
Kok, S., Ong-Abdullah, M., Ee, C., & Namasivayam, P. (2011). Comparison of nutrient composition in kernel of tenera and clonal materials of oil palm (Elaeis guineensis Jacq.). Food Chemistry, 129, 1343-1347. https://doi.org/10.1016/j.foodchem.2011.05.023
Lambert, J., & Rothman, J. (2015). Fallback foods, optimal diets, and nutritional targets: Primate responses to varying food availability and quality. Annual Reviews in Anthropology, 44, 493-512. https://doi.org/10.1146/annurev-anthro-102313-025928
Laurance, W., Sayer, J., & Cassman, K. (2014). Agriculture expansion and its impacts on tropical nature. Trends in Ecology and Evolution, 29, 107-116. https://doi.org/10.1016/j.tree.2013.12.001
Leciak, E., Hladik, A., & Hladik, C. (2005). Le palmier à huile (Elaeis guineensis) et les noyaux de biodiversité des forêts-galeries de Guinée maritime: À propos du commensalisme de l'homme et du chimpanzé. Revue Écologie Terre et Vie, 60, 179-184.
Lodge, E., Ross, C., Ortmann, S., & MacLarnon, A. (2013). Influence of diet and stress on reproductive hormones in Nigerian olive baboons. General and Comparative Endocrinology, 191, 146-154. https://doi.org/10.1016/j.ygcen.2013.06.016
Mackenzie, C., & Ahabyona, P. (2012). Elephants in the garden: Financial and social costs of crop raiding. Ecological Economics, 75, 72-82. https://doi.org/10.1016/j.ecolecon.2011.12.018
Magliocca, F., & Gautier-Hion, A. (2002). Mineral content as a basis for food selection by western lowland gorillas in a forest clearing. American Journal of Primatology, 57, 67-77. https://doi.org/10.1002/ajp.10034
Malenky, R., & Wrangham, R. (1994). A quantitative comparison of terrestrial herbaceous food consumption by Pan paniscus in the Lomako Forest, Zaire, and Pan troglodytes in the Kibale Forest, Uganda. American Journal of Primatology, 32, 1-12. https://doi.org/10.1002/ajp.1350320102
Matsumoto-Oda, A., & Hayashi, Y. (1999). Nutritional aspects of fruit choice by chimpanzees. Folia Primatologica, 70, 154-162. https://doi.org/10.1159/000021688
Matsuzawa, T., Humle, T., & Sugiyama, Y. (2011). The chimpanzees of Bossou and Nimba. New York: Springer.
McKinney, T. (2011). The effects of provisioning and crop-raiding on the diet and foraging activities of human-commensal white-faced capuchins (Cebus capucinus). American Journal of Primatology, 73, 439-448. https://doi.org/10.1002/ajp.20919
McLennan, M. (2013). Diet and feeding ecology of chimpanzees (Pan troglodytes) in Bulindi, Uganda: Foraging strategies at the forest-farm interface. International Journal of Primatology, 34, 585-614. https://doi.org/10.1007/s10764-013-9683-y
McLennan, M., & Ganzhorn, J. (2017). Nutritional characteristics of wild and cultivated foods for chimpanzees (Pan troglodytes) in agricultural landscapes. International Journal of Primatology, 38, 122-150. https://doi.org/10.1007/s10764-016-9940-y
McLennan, M., & Hockings, K. (2014). Wild chimpanzees show group differences in selection of agricultural crops. Scientific Reports, 4, 5956. https://doi.org/10.1038/srep05956
Milton, K. (1999). Nutritional characteristics of wild primate foods: Do the diets of our closest living relatives have lessons for us? Nutrition, 15, 488-498. https://doi.org/10.1016/s0899-9007(99)00078-7
Milton, K. (2008). Macronutrient patterns of 19 species of panamanian fruits from Barro Colorado Island. Neotropical Primates, 15, 1-7. https://doi.org/10.1896/044.015.0101
National Research Council. (2003). Nutrient requirements of nonhuman primates (2nd ed.). Washington, DC: National Academies Press.
Naughton-Treves, L., Treves, A., Chapman, C., & Wrangham, R. (1998). Temporal patterns of crop-raiding by primates: Linking food availability in croplands and adjacent forest. Journal of Applied Ecology, 35, 596-606. https://doi.org/10.1046/j.1365-2664.1998.3540596.x
Nishida, T., & Uehara, S. (1983). Natural diet of chimpanzees (Pan troglodytes schweinfurthii): Long-term record from the Mahale Mountains, Tanzania. African Study Monographs, 3, 109-130.
O'Malley, R., & Power, M. (2014). The energetic and nutritional yields from insectivory for Kasekela chimpanzees. Journal of human evolution, 71, 46-58. https://doi.org/10.1016/j.jhevol.2013.09.014
Oates, J. (1978). Water-plant and soil consumption by guereza monkeys (Colobus guereza): A relationship with minerals and toxins in the diet? Biotropica, 10, 241-253. https://doi.org/10.2307/2387676
Osborn, F. (2004). Seasonal variation of feeding patterns and food selection by crop-raiding elephants in Zimbabwe. African Journal of Ecology, 42, 322-327. https://doi.org/10.1111/j.1365-2028.2004.00531.x
Priston, N., & McLennan, M. (2013). Managing humans, managing macaques: Human-macaque conflict in Asia and Africa. In S. Radhakrishna, M. Huffman & A. Sinha (Eds.), The macaque connection: Cooperation and conflict between humans and macaques (pp. 225-250). New York: Springer.
Pruetz, J. (2006). Feeding ecology of savanna chimpanzees (Pan troglodytes verus) at Fongoli, Senegal. In G. R. Hohmann (Ed.), Feeding ecology in apes and other primates: Ecological, physical and behavioral aspects (pp. 161-182). New York: Cambridge University Press.
Raubenheimer, D., Machovsky-Capuska, G., Chapman, C., & Rothman, J. (2015). Geometry of nutrition in field studies: An illustration using wild primates. Oecologia, 177, 223-234. https://doi.org/10.1007/s00442-014-3142-0
Redpath, S., Young, J., Evely, A., Adams, W., Sutherland, W., Whitehouse, A., … Gutierrez, R. (2013). Understanding and managing conservation conflicts. Trends in Ecology and Evolution, 28, 100-109. https://doi.org/10.1016/j.tree.2012.08.021
Reiner, W., Petzinger, C., Power, M., Hyeroba, D., & Rothman, J. (2014). Fatty acids in mountain gorilla diets: Implications for primate nutrition and health. American Journal of Primatology, 76, 281-288. https://doi.org/10.1002/ajp.22232
Reynolds, V. (2005). The chimpanzees of the Budongo forest: Ecology, behaviour and conservation. Oxford: Oxford University Press.
Reynolds, V., Lloyd, A., Babweteera, F., & English, C. (2009). Decaying Raphia farinifera palm trees provide a source of sodium for wild chimpanzees in the Budongo Forest, Uganda. PLOS One, 4, e6194. https://doi.org/10.1371/journal.pone.0006194
Reynolds, V., Lloyd, A., & English, C. (2012). Adaptation by Budongo Forest Chimpanzees (Pan troglodytes schweinfurthii) to loss of a primary source of dietary sodium. African Primates, 7, 156-162.
Reynolds, v, Plumptre, A., Greenham, J., & Harborne, J. (1998). Condensed tannins and sugars in the diet of chimpanzees (Pan troglodytes schweinfurthii) in the Budongo Forest, Uganda. Oecologia, 115, 331-336. https://doi.org/10.1007/s004420050524
Righini, N., Garber, P., & Rothman, J. (2015). The effects of plant nutritional chemistry on food selection of Mexican black howler monkeys (Alouatta pigra): The role of lipids. American Journal of Primatology, 79, 1-15. https://doi.org/10.1002/ajp.22524
Riley, E., Tolbert, B., & Farida, W. (2013). Nutritional content explains the attractiveness of cacao to crop raiding tonkean macaques. Current Zoology, 59, 160-169. https://doi.org/10.1093/czoolo/59.2.160
Rode, K., Chiyo, P., Chapman, C., & McDowell, L. (2006). Nutritional ecology of elephants in Kibale National Park, Uganda, and its relationship with crop-raiding behaviour. Journal of Tropical Ecology, 22, 441-449. https://doi.org/10.1017/s0266467406003233
Rothman, J., Chapman, C., Hansen, J., Cherney, D., & Pell, A. (2009). Rapid assessment of the nutritional value of foods eaten by mountain gorillas: Applying near-infrared reflectance spectroscopy to primatology. International Journal of Primatology, 30, 729-742. https://doi.org/10.1007/s10764-009-9372-z
Rothman, J., Chapman, C., & Pell, A. (2008). Fiber-bound nitrogen in gorilla diets: Implications for estimating dietary protein intake of primates. American Journal of Primatology, 70, 690-694. https://doi.org/10.1002/ajp.20540
Rothman, J., Chapman, C., & Van Soest, P. (2012). Methods in primate nutritional ecology: A user's guide. International Journal of Primatology, 33, 542-566. https://doi.org/10.1007/s10764-011-9568-x
Saj, T., Sicotte, P., & Paterson, J. (1999). Influence of human food consumption on the time budget of vervets. International Journal of Primatology, 20, 977-994. https://doi.org/10.1023/a:1020886820759
Sams, C. (1999). Preharvest factors affecting postharvest texture. Postharvest Biology and Technology, 15, 249-254. https://doi.org/10.1016/s0925-5214(98)00098-2
Shimwa, A., Murray, C., Power, M., & O'Malley, R. (2019). Sodium content in plant & insect resources consumed by chimpanzees in Gombe National Park, Tanzania. The 88th Annual Meeting of the American Association of Physical Anthropologists.
Simpson, S., & Raubenheimer, D. (2012). The nature of nutrition: A unifying framework from animal adaptation to human obesity. Princeton: Princeton University Press.
Sousa, J., Barata, A., Sousa, C., Casanova, C., & Vicente, L. (2011). Chimpanzee oil-palm use in southern Cantanhez National Park, Guinea-Bissau. American Journal of Primatology, 73, 485-497. https://doi.org/10.1002/ajp.20926
Strum, S. (2010). The development of primate raiding: Implications for management and conservation. International Journal of Primatology, 31, 133-156. https://doi.org/10.1007/s10764-009-9387-5
Sugiyama, Y., & Fujita, S. (2011). The demography and reproductive parameters of Bossou chimpanzees. In T. Matsuzawa, T. Humle & Y. Sugiyama (Eds.), The chimpanzees of Bossou and Nimba (pp. 23-34). New York: Springer.
Sugiyama, Y., & Koman, J. (1992). The flora of Bossou: Its utilization by chimpanzees and humans. African Study Monographs, 13, 127-169.
Takemoto, H. (2002). Feeding ecology of chimpanzees in Bossou, Guinea: Coping with the seasonal fluctuation of food supply and micrometeorology in the tropical forest (Unpublished PhD thesis). Kyoto University.
Takemoto, H. (2003). Phytochemical determination for leaf food choice by wild chimpanzees in Guinea, Bossou. Journal of Chemical Ecology, 29, 2551-2573. https://doi.org/10.1023/a:1026366119705
Tutin, C., & Fernandez, M. (1993). Composition of the diet of chimpanzees and comparisons with that of sympatric lowland gorillas in the lopé reserve, gabon. American Journal of Primatology, 30, 195-211. https://doi.org/10.1002/ajp.1350300305
Van Soest, J., Robertson, J., & Lewis, B. (1991). Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. Journal of Dairy Science, 74, 3583-3597. https://doi.org/10.3168/jds.s0022-0302(91)78551-2
Wallis, I., Edwards, M., Windley, H., Krockenberger, A., Felton, A., Quenzer, M., … Foley, W. (2012). Food for folivores: Nutritional explanations linking diets to population density. Oecologia, 169, 281-291. https://doi.org/10.1007/s00442-011-2212-9
Warren, Y., Higham, J., MacLarnon, A., & Ross, C. (2011). Crop-raiding and commensalism in olive baboons: The costs and benefits of living with humans. In V. Sommer & C. Ross (Eds.), Primates of Gashaka: Socioecology and conservation in Nigeria's biodiversity hotspot (pp. 359-384). New York: Springer.
Watts, D., Potts, K., Lwang, J., & Mitani, J. (2012). Diet of chimpanzees (Pan troglodytes schweinfurthii) at Ngogo, Kibale National Park, Uganda, 2. Temporal variation and fallback foods. American Journal of Primatology, 74, 130-144. https://doi.org/10.1002/ajp.21015
Wilson, M., Boesch, C., Fruth, B., Furuichi, T., Gilby, I., Hashimoto, C., … Lloyd, J. (2014). Lethal aggression in Pan is better explained by adaptive strategies than human impacts. Nature, 513, 414-417. https://doi.org/10.1038/nature13727
Woolf, A., & Ferguson, I. (2000). Postharvest responses to high fruit temperatures in the field. Postharvest Biology and Technology, 21, 7-20. https://doi.org/10.1016/s0925-5214(00)00161-7
Worman, C., & Chapman, C. (2005). Seasonal variation in the quality of a tropical ripe fruit and the response of three frugivores. Journal of Tropical Ecology, 21, 689-697. https://doi.org/10.1017/s0266467405002725
Wrangham, R., Conklin, N., Chapman, C., Hunt, K., Milton, K., Rogers, E., … Barton, R. (1991). The significance of fibrous foods for Kibale Forest chimpanzees. Philosophical Transactions of the Royal Society London, Series B, 334, 171-178. https://doi.org/10.1098/rstb.1991.0106
Wrangham, R., Conklin, N., Etot, G., Obua, J., Hunt, K., Hauser, M., & Clark, A. (1993). The value of figs to chimpanzees. International Journal of Primatology, 14, 243-256. https://doi.org/10.1007/bf02192634
Wrangham, R., Conklin-Brittain, N., & Hunt, K. (1998). Dietary response of chimpanzees and cercopithecines to seasonal variation in fruit abundance. I. Antifeedants. International Journal of Primatology, 19, 949-970. https://doi.org/10.1023/a:1020318102257
Yamakoshi, G. (1998). Dietary responses to fruit scarcity of wild chimpanzees at Bossou, Guinea: Possible implications for ecological importance of tool use. American Journal of Physical Anthropology, 106, 283-295. https://doi.org/10.1002/(sici)1096-8644(199807)106:3%3C283::aid-ajpa2%3E3.0.co;2-o
Yamakoshi, G., & Sugiyama, Y. (1995). Pestle-pounding behavior of wild chimpanzees at Bossou, Guinea: A newly observed tool-using behavior. Primates, 36, 489-500. https://doi.org/10.1007/bf02382871