Beware of Primate Life History Data: A Plea for Data Standards and a Repository

PLoS ONE

Volumn 8, Issue 6, 2013, Pages

  Borries, Carola ^a   Gordon, Adam D ^b   Koenig, Andreas ^a  

^a STONY BROOK UNIVERSITY   (United States)

^b STATE UNIVERSITY OF NEW YORK   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; BODY MASS; DATA ANALYSIS; FACTUAL DATABASE; GESTATIONAL AGE; GROWTH RATE; INFANT MORTALITY; LIFE HISTORY; NUTRITIONAL HEALTH; PRIMATE; REPRODUCTION; STANDARDIZATION; SURVIVAL RATE; TAXON; WILD ANIMAL;

ANIMALS; ASIA; BODY WEIGHT; DATABASES AS TOPIC; FEMALE; LIFE CYCLE STAGES; PREGNANCY; PRIMATES; REPRODUCTION;

LEMURIDAE; MACACA; MAMMALIA; PRIMATES;

EID: 84879476421     PISSN: None     EISSN: 19326203     Source Type: Journal    
DOI: 10.1371/journal.pone.0067200     Document Type: Article

References (135)

1. Stearns SC (1992) The evolution of life history. Oxford: Oxford University Press. 249 p.
2. Catlett KK, Schwartz GT, Godfrey LR, Jungers WL, (2010) "Life history space": a multivariate analysis of life history variation in extant and extinct Malagasy lemurs. Am J Phys Anthropol 142: 391-404.
3. Schwartz GT, Mahoney P, Godfrey LR, Cuozzo FP, Jungers WL, et al. (2005) Dental development in Megaladapis edwardsi (Primates, Lemuriformes): implications for understanding life history variation in subfossil lemurs. J Hum Evol 49: 702-721.
4. Robson SL, Wood BA, (2008) Hominin life history: reconstruction and evolution. J Anat 212: 394-425.
5. Godfrey LR, Samonds KE, Jungers WL, Sutherland MR, (2001) Teeth, brains, and primate life histories. Am J Phys Anthropol 114: 192-214.
6. Guthrie EH, Frost SR, (2011) Pattern and pace of dental eruption in Tarsius. Am J Phys Anthropol 145: 446-451.
7. Plunkett J, Doniger S, Orabona G, Morgan T, Haataja R, et al. (2011) An evolutionary genomic approach to identify genes involved in human birth timing. PLoS Genet 7: e1001365.
8. Ross C, MacLarnon AM, (2000) The evolution of non-maternal care in anthropoid primates: a test of the hypotheses. Folia Primatol 71: 93-113.
9. Alvarez HP, (2000) Grandmother hypothesis and primate life history. Am J Phys Anthropol 113: 435-450.
10. Hill K, Hurtado AM (1996) Ache life history: the ecology and demography of a foraging people; Hrdy SB, Borgerhoff Mulder M, editors. New York: Aldine de Gruyter. 561 p.
11. Hawkes K, Paine RR, editors (2006) The evolution of human life history. Santa Fe: School of American Research Press. 505 p.
12. Isler K, Kirk EC, Miller JMA, Albrecht GA, Gelvin BR, et al. (2008) Endocranial volumes of primate species: scaling analyses using a comprehensive and reliable data set. J Hum Evol 55: 967-978.
13. Ernest SKM, (2003) Life history characteristics of placental nonvolant mammals. Ecology 84: 3402.
14. Lyons SK, Wagner PJ, Dzikiewicz K, (2010) Ecological correlates of range shifts of Late Pleistocene mammals. Phil Trans R Soc Lond B 365: 3681-3693.
15. Turbill C, Bieber C, Ruf T, (2011) Hibernation is associated with increased survival and the evolution of slow life histories among mammals. Proc R Soc Lond B 278: 3355-3363.
16. Sibly RM, Brown JH, (2007) Effects of body size and lifestyle on evolution of mammal life histories. Proc Natl Acad Sci USA 104: 17707-17712.
17. Jones KE, Bielby J, Cardillo M, Fritz SA, O'Dell J, et al. (2009) PanTHERIA: a species-level database of life history, ecology, and geography of extant and recently extinct mammals. Ecology 90: 2648.
18. Barton RA, Capellini I, (2011) Maternal investment, life histories, and the costs of brain growth in mammals. Proc Natl Acad Sci USA 108: 6169-6174.
19. Capellini I, Venditti C, Barton RA, (2011) Placentation and maternal investment in mammals. Am Nat 177: 86-98.
20. Carbone C, Cowlishaw G, Isaac NJB, Rowcliffe JM, (2005) How far do animals go? Determinants of day range in mammals. Am Nat 165: 290-297.
21. Kamilar JM, Bribiescas RG, Bradley BJ, (2010) Is group size related to longevity in mammals? Biol Lett 6: 736-739.
22. Bielby J, Mace GM, Bininda-Emonds ORP, Cardillo M, Gittleman JL, et al. (2007) The fast-slow continuum in mammalian life history: an empirical reevaluation. Am Nat 169: 748-757.
23. Dubman E, Collard M, Mooers AO, (2012) Evidence that gestation duration and lactation duration are coupled traits in primates. Biol Lett 8: 998-1001.
24. Kappeler PM, Pereira ME, editors (2003) Primate life histories and socioecology. Chicago: University of Chicago Press. 395 p.
25. Leigh SR, Blomquist GE (2011) Life history. In: Campbell CJ, Fuentes A, MacKinnon KC, Bearder SK, Stumpf RM, editors. Primates in perspective. 2nd ed. New York: Oxford University Press. 418-428.
26. Barrickman NL, Bastian ML, Isler K, van Schaik CP, (2008) Life history costs and benefits of encephalization: a comparative test using data from long-term studies of primates in the wild. J Hum Evol 54: 568-590.
27. Mumby H, Vinicius L, (2008) Primate growth in the slow lane: a study of inter-species variation in the growth constant A. Evol Biol. 35: 287-295.
28. Nakamichi M, Yamada K, (2009) Distribution of dorsal carriage among simians. Primates 50: 153-168.
29. Rowe N, Myers M (2011) All the World's primates. 2011 ed: Primate Conservation, Inc.
30. Covert HH, (2012) A pictorial guide to living primates and much more. Evol Anthropol 21: 84-85.
31. Martin P, Bateson P (2007) Measuring behaviour: an introductory guide. Cambridge: Cambridge University Press. 176 p.
32. Sacher GA, Staffeldt EF, (1974) Relation of gestation time to brain weight for placental mammals: implications for the theory of vertebrate growth. Am Nat 108: 593-615.
33. Harvey PH, Martin RD, Clutton-Brock TH (1987) Life histories in comparative perspective. In: Smuts BB, Cheney DL, Seyfarth RM, Wrangham RW, Struhsaker TT, editors. Primate societies. Chicago: University of Chicago Press. 181-196.
34. Lee PC, (2012) Growth and investment in hominin life history evolution: patterns, processes, and outcomes. Int J Primatol 33: 1309-1331.
35. Martin RD, (2007) The evolution of human reproduction: a primatological perspective. Yearb Phys Anthropol 134: 59-84.
36. Dunsworth HM, Warrener AG, Deacon T, Ellison PT, Pontzer H, (2012) Metabolic hypothesis for human altriciality. Proc Natl Acad Sci USA 109: 15212-15216.
37. Cross JF, Martin RD, (1981) Calculation of gestation period and other reproductive parameters for primates. Dodo J Jersey Wildl Preserv Trust 18: 30-43.
38. Martin RD (1992) Female cycles in relation to paternity in primate societies. In: Martin RD, Dixson AF, Wickings EJ, editors. Paternity in primates: genetic tests and theories. Basel: Karger. 238-274.
39. Dixson AF (1998) Primate sexuality: comparative studies of the prosimians, monkeys, apes, and human beings. Oxford: Oxford University Press.
40. Hrdy SB, Whitten PL (1987) Patterning of sexual activity. In: Smuts BB, Cheney DL, Seyfarth RM, Wrangham RW, Struhsaker TT, editors. Primate societies. Chicago: University of Chicago Press. 370-384.
41. Silk JB, (1986) Eating for two: behavioral and environmental correlates of gestation length among free-ranging baboons (Papio cynocephalus). Int J Primatol 7: 583-602.
42. Beehner JC, Nguyen N, Wango EO, Alberts SC, Altmann J, (2006) The endocrinology of pregnancy and fetal loss in wild baboons. Horm Behav 49: 688-699.
43. Sommer V, Srivastava A, Borries C, (1992) Cycles, sexuality, and conception in free-ranging langurs (Presbytis entellus). Am J Primatol 28: 1-27.
44. Strier KB, Ziegler TE, (2005) Advances in field-based studies of primate behavioral endocrinology. Am J Primatol 67: 1-4.
45. Michod RE, (1979) Evolution of life histories in response to age-specific mortality factors. Am Nat 113: 531-550.
46. Charlesworth B (1994) Evolution in age-structured populations. Cambridge: Cambridge University Press. 306 p.
47. McNeilly AS, Tay CCK, Glasier A, (2006) Physiological mechanisms underlying lactational amenorrhea. Ann NY Acad Sci 709: 145-155.
48. Koyama N, Nakamichi M, Oda R, Miyamoto N, Ichino S, et al. (2001) A ten-year summary of reproductive parameters for ring-tailed lemurs at Berenty, Madagascar. Primates 42: 1-14.
49. Kappeler PM, Fichtel C (2012) A 15-year perspective on the social organization and life history of sifaka in Kirindy Forest. In: Kappeler PM, Watts DP, editors. Long-term field studies of primates. Berlin: Springer. 101-121.
50. Hearn JP, (1982) The reproductive physiology of the common marmoset Callithrix jacchus in captivity. Int Zoo Yb 22: 138-143.
51. van Schaik CP (2000) Infanticide by male primates: the sexual selection hypothesis revisited. In: van Schaik CP, Janson CH, editors. Infanticide by males and its implications. Cambridge: Cambridge University Press. 27-60.
52. Pochron ST, Tucker WT, Wright PC, (2004) Demography, life history, and social structure in Propithecus diadema edwardsi from 1986-2000 in Ranomafana National Park, Madagascar. Am J Phys Anthropol 125: 61-72.
53. Borries C, (1997) Infanticide in seasonally breeding multimale groups of Hanuman langurs (Presbytis entellus) in Ramnagar (South Nepal). Behav Ecol Sociobiol 41: 139-150.
54. Nguyen N (2006) Endocrine correlates and fitness consequences of variation in the mother-infant relationship in wild baboons (Papio cynocephalus) in Amboseli, Kenya [Dissertation]. Princeton: Princeton University. 180 p.
55. Watts DP, (1989) Infanticide in Mountain gorillas: new cases and a reconsideration of the evidence. Ethology 81: 1-18.
56. Bronson FH (1989) Mammalian reproductive biology. Chicago: University of Chicago Press. 325 p.
57. Koenig A, Borries C, Chalise MK, Winkler P, (1997) Ecology, nutrition, and timing of reproductive events in an Asian primate, the Hanuman langur (Presbytis entellus). J Zool 243: 215-235.
58. Asquith PJ, (1989) Provisioning and the study of free-ranging primates: history, effects, and prospects. Yearb Phys Anthropol 32: 129-158.
59. Hendrickx AG, Dukelow WR (1995) Reproductive biology. In: Bennett BT, Abee CR, Henrickson R, editors. Nonhuman primates in biomedical research: biology and management. San Diego: Academic Press. 147-191.
60. Ross C, (1992) Life history patterns and ecology of macaque species. Primates 33: 207-215.
61. Leigh SR, (1994) Ontogenetic correlates of diet in anthropoid primates. Am J Phys Anthropol 94: 499-522.
62. Navarrete A, van Schaik CP, Isler K, (2011) Energetics and the evolution of human brain size. Nature 480: 91-93.
63. Borries C, Lu A, Ossi-Lupo K, Larney E, Koenig A, (2011) Primate life histories and dietary adaptations: a comparison of Asian colobines and macaques. Am J Phys Anthropol 144: 286-299.
64. Delson E (1980) Fossil macaques, phyletic relationships and a scenario of development. In: Lindburg DG, editor. The macaques: studies in ecology, behavior and evolution. New York: van Nostrand Reinhold. 10-30.
65. Delson E (1994) Evolutionary history of the colobine monkeys in paleoenvironmental perspective. In: Davies AG, Oates JF, editors. Colobine monkeys: their ecology, behaviour and evolution. Cambridge: Cambridge University Press. 11-43.
66. Smith RJ, Jungers WL, (1997) Body mass in comparative primatology. J Hum Evol 32: 523-559.
67. Gordon AD, (2006) Scaling of size and dimorphism in primates II: Macroevolution. Int J Primatol 27: 63-105.
68. Leigh SR, (1994) Relations between captive and noncaptive weights in anthropoid primates. Zoo Biol 13: 21-43.
69. Elias MF, Samonds KW, (1977) Protein and calorie malnutrition in infant cebus monkeys: growth and behavioral development during deprivation and rehabilitation. Am J Clin Nutr 30: 355-366.
70. Janson CH, van Schaik CP (1993) Ecological risk aversion in juvenile primates: slow and steady wins the race. In: Pereira ME, Fairbanks LA, editors. Juvenile primates: life history, development, and behavior. New York: Oxford University Press. 57-74.
71. Godfrey LR, Samonds KE, Jungers WL, Sutherland MR, Irwin MT, (2004) Ontogenetic correlates of diet in Malagasy lemurs. Am J Phys Anthropol 123: 250-276.
72. Harvey PH, Clutton-Brock TH, (1985) Life history variation in primates. Evolution 39: 559-581.
73. Roff DA (1992) Life history evolution. Sunderland: Sinauer Associates, Inc. 527 p.
74. National Research Council US (1981) Techniques for the study of primate population ecology. Washington, D.C.: National Academy Press. 233 p.
75. Quinn GP, Keough MJ (2002) Experimental design and data analysis for biologists. Cambridge: Cambridge University Press. 537 p.
76. Martins EP, Hansen TF, (1997) Phylogenies and the comparative method: a general approach to incorporating phylogenetic information into the analysis of interspecific data. Am Nat 149: 646-667.
77. Pagel M, (1999) Inferring the historical patterns of biological evolution. Nature 401: 877-884.
78. Pagel M, (1997) Inferring evolutionary processes from phylogenies. Zool Scr 26: 331-348.
79. Arnold C, Matthews LJ, Nunn CL, (2010) The 10kTrees website: a new online resource for primate phylogeny. Evol Anthropol 19: 114-118.
80. Meyer D, Rinaldi ID, Ramlee H, Perwitasari-Farajallah D, Hodges JK, et al. (2011) Mitochondrial phylogeny of leaf monkeys (genus Presbytis, Eschscholtz, 1821) with implications for taxonomy and conservation. Mol Phylogenet Evol 59: 311-319.
81. R Development Core Team (2012) A language and environment for statistical computing. Vienna: R foundation for statistical computing.
82. Orme CDL, Freckleton RP, Thomas GH, Petzoldt T, Fritz SA, et al. (2012) CAPER: Comparative analyses of phylogenetics and evolution in R. R package version 0.5.
83. Skinner MM, Wood B (2006) The evolution of modern human life history. In: Hawkes K, Paine RR, editors. The evolution of human life history. Santa Fe: School of American Research Press. 331-364.
84. Kihlstroem JE, (1972) Period of gestation and body weight in some placental mammals. Comp Biochem Physiol A 43: 673-679.
85. Little BB, (1989) Gestation length, metabolic rate, and body and brain weights in primates: epigenetic effects. Am J Phys Anthropol 80: 213-218.
86. Harvey PH, Promislow DEL, Read AF (1989) Causes and correlates of life history differences among mammals. In: Standen V, Foley RA, editors. Comparative socioecology: the behavioural ecology of humans and other mammals. Oxford: Blackwell Scientific Publications. 305-318.
87. White CR, Seymour RS, (2003) Mammalian basal metabolic rate is proportional to body mass2/3. Proc Natl Acad Sci USA 100: 4046-4049.
88. Beehner JC, Onderdonk DA, Alberts SC, Altmann J, (2006) The ecology of conception and pregnancy failure in wild baboons. Behav Ecol 17: 741-750.
89. van Schaik CP (2000) Vulnerability to infanticide by males: patterns among mammals. In: van Schaik CP, Janson CH, editors. Infanticide by males and its implications. Cambridge: Cambridge University Press. 61-71.
90. Terasawa E, Kurian JR, Keen KL, Shiel NA, Colman RJ, et al. (2012) Body weight impact on puberty: effects of high-calorie diet on puberty onset in female rhesus monkeys. Endocrinology 153: 1696-1705.
91. Bau AM, Ernert A, Schenk L, Wiegand S, Martus P, et al. (2009) Is there a further acceleration in the age at onset of menarche? A cross-sectional study of 1840 school children focusing on age and bodyweight at the onset of menarche. Eur J Endocrinol 160: 107-113.
92. Hawkes K (2006) Life history theory and human evolution. In: Hawkes K, Paine RR, editors. The evolution of human life history. Santa Fe: School of American Research Press. 45-93.
93. Evans CS, Goy RW, (1968) Social behaviour and reproductive cycles in captive ring-tailed lemurs (Lemur catta). J Zool 156: 181-197.
94. Izard MK, Weisenseel KA, Ange RL, (1988) Reproduction in the slow loris (Nycticebus coucang). Am J Primatol 16: 331-339.
95. Rasmussen DT, Izard MK, (1988) Scaling growth and life history traits relative to body size, brain size, and metabolic rate in lorises and galagos (Lorisidae, Primates). Am J Phys Anthropol 75: 357-367.
96. van Belle S, Estrada A, Ziegler TE, Strier KB, (2009) Sexual behavior across ovarian cycles in wild black howler monkeys (Alouatta pigra): male mate guarding and female mate choice. Am J Primatol 71: 153-164.
97. Glander KE, (1980) Reproduction and population growth in free-ranging mantled howling monkeys. Am J Phys Anthropol 53: 25-36.
98. Fedigan LM, Jack KM (2012) Tracking Neotropical monkeys in Santa Rosa: lessons from a regenerating Costa Rican dry forest. In: Kappeler PM, Watts DP, editors. Long-term field studies of primates. Berlin: Springer. 165-184.
99. Eisenberg JF, (1973) Reproduction in two species of spider monkeys, Ateles fusciceps and Ateles geoffroyi. J Mammal 54: 955-957.
100. Mustoe AC, Birnie AK, Korgan AC, Santo JB, French JA, (2012) Natural variation in gestational cortisol is associated with patterns of growth in marmoset monkeys (Callithrix geoffroyi). Gen Comp Endocrinol 175: 519-526.
101. Silk JB, Short J, Roberts J, Kusnitz J, (1993) Gestation length in rhesus macaques (Macaca mulatta). Int J Primatol 14: 95-104.
102. Bramblett CA, Pejaver LD, Drickman DJ, (1975) Reproduction in captive vervet and Sykes' monkeys. J Mammal 56: 940-946.
103. Lu A, Borries C, Czekala NM, Beehner JC, (2010) Reproductive characteristics of wild female Phayre's leaf monkeys. Am J Primatol 72: 1073-1081.
104. Barelli C, Heistermann M, Boesch C, Reichard UH, (2007) Sexual swellings in wild white-handed gibbon females (Hylobates lar) indicate the probability of ovulation. Horm Behav 51: 221-230.
105. Czekala NM, Benirschke K, McClure H, Lasley BL, (1983) Urinary estrogen excretion during pregnancy in the gorilla (Gorilla gorilla), orangutan (Pongo pygmaeus) and the human (Homo sapiens). Biol Reprod 28: 289-294.
106. Smith R, Wickings EJ, Bowman ME, Belleoud A, Dubreuil G, et al. (1999) Corticotropin-releasing hormone in chimpanzee and gorilla pregnancies. J Clin Endocr Metab 84: 2820-2825.
107. Groves C (2001) Primate taxonomy. Washington: Smithsonian Institution Press. 350 p.
108. Lynch Alfaro JW, Boubli JP, Olson LE, di Fiore A, Wilson B, et al. (2012) Explosive Pleistocene range expansion leads to widespread Amazonian sympatry between robust and gracile capuchin monkeys. J Biogeogr 39: 272-288.
109. Struhsaker TT (2010) The red colobus monkeys: variation in demography, behavior, and ecology of endangered species. Oxford: Oxford University Press. 376 p.
110. Crockett CM, Rudran R, (1987) Red howler monkey birth data II: interannual, habitat, and sex comparisons. Am J Primatol 13: 369-384.
111. Fedigan LM, Rose LM, (1995) Interbirth interval variation in three sympatric species of Neotropical monkey. Am J Primatol 37: 9-24.
112. Fedigan LM, Carnegie SD, Jack KM, (2008) Predictors of reproductive success in female white-faced capuchins (Cebus capucinus). Am J Phys Anthropol 137: 82-90.
113. Ramirez-Llorens P, di Bitetti MS, Baldovino MC, Janson CH, (2008) Infanticide in black capuchin monkeys (Cebus apella nigritus) in Iguazu National Park, Argentina. Am J Primatol 70: 473-484.
114. Cords M, Chowdhury S, (2010) Life history of Cercopithecus mitis stuhlmanni in the Kakamega Forest, Kenya. Int J Primatol 31: 433-455.
115. Takahata Y, Suzuki S, Agetsuma N, Okayasu N, Sugiura H, et al. (1998) Reproduction of wild Japanese macaque females at Yakushima and Kinkazan Islands: a preliminary report. Primates 39: 339-349.
116. Smuts BB, Nicolson N, (1989) Reproduction in wild female olive baboons. Am J Primatol 19: 229-246.
117. Roberts EK, Lu A, Bergman TJ, Beehner JC, (2012) A Bruce effect in wild geladas. Science 335: 1222-1225.
118. Struhsaker TT, Pope TR, (1991) Mating system and reproductive success: a comparison of two African forest monkeys (Colobus badius and Cercopithecus ascanius). Behaviour 117: 182-205.
119. Wich SA, Steenbeck R, Sterck EHM, Korstjens AH, Willems EP, et al. (2007) Demography and life history of Thomas langurs (Presbytis thomasi). Am J Primatol 69: 641-651.
120. Koenig A, Borries C, (2001) Socioecology of Hanuman langurs: the story of their success. Evol Anthropol 10: 122-137.
121. Jin T, Wang DZ, Zhao Q, Yin L, Qin D, et al. (2009) Reproductive parameters of wild Trachypithecus leucocephalus: seasonality, infant mortality and interbirth interval. Am J Primatol 71: 558-566.
122. Reichard UH, Ganpanakngan M, Barelli C (2012) White-handed gibbons of Khao Yai: social flexibility, complex reproductive strategies, and a slow life history. In: Kappeler PM, Watts DP, editors. Long-term field studies of primates. Berlin: Springer. 237-258.
123. Robbins AM, Stoinski TS, Fawcett KA, Robbins MM, (2009) Does dispersal cause reproductive delays in female mountain gorillas? Behaviour 146: 525-549.
124. Stewart KJ, Harcourt AH, Watts DP (1988) Determinants of fertility in wild gorillas and other primates. In: Diggory P, Potts M, Teper S, editors. Natural human fertility. London: MacMillan. 22-38.
125. Emery Thompson M, Jones JH, Pusey AE, Brewer-Marsden S, Goodall J, et al. (2007) Aging and fertility patterns in wild chimpanzees provide insights into the evolution of menopause. Curr Biol 17: 2150-2156.
126. Fujita S, Sugiura H, Mitsunaga F, Shimizu K, (2004) Hormone profiles and reproductive characteristics in wild female Japanese macaques (Macaca fuscata). Am J Primatol 64: 367-375.
127. Nigi H, (1976) Some aspects related to conception of the Japanese monkey (Macaca fuscata). Primates 17: 81-87.
128. Watanabe K, Mori A, Kawai M, (1992) Characteristic features of the reproduction of Koshima monkeys, Macaca fuscata fuscata: a summary of thirty-four years of observation. Primates 33: 1-32.
129. Koyama N, Takahata Y, Huffman MA, Norikoshi K, Suzuki H, (1992) Reproductive parameters of female Japanese macaques: thirty years data from the Arashiyama troops, Japan. Primates 33: 33-47.
130. Kriewaldt FH, Hendrickx AG, (1968) Reproductive parameters of the baboon. Lab Anim Sci 18: 361-370.
131. Altmann J, Alberts SC, (2005) Growth rates in a wild primate population: ecological influences and maternal effects. Behav Ecol Sociobiol 57: 490-501.
132. Altmann J, Alberts SC, (2003) Variability in reproductive success viewed from a life-history perspective in baboons. Am J Hum Biol 15: 401-409.
133. Ziegler T, Hodges JK, Winkler P, Heistermann M, (2000) Hormonal correlates of reproductive seasonality in wild female Hanuman langurs (Presbytis entellus). Am J Primatol 51: 119-134.
134. Borries C, Koenig A, Winkler P, (2001) Variation of life history traits and mating patterns in female langur monkeys (Semnopithecus entellus). Behav Ecol Sociobiol 50: 391-402.
135. Rajpurohit LS, Mohnot SM, (1991) The process of weaning in Hanuman langurs Presbytis entellus entellus. Primates 32: 213-218.