Silk & Brown

Electronic Supplementary Materials

Table 1. Birth sex ratios by species

All Sources / Wild data
GENUS / SPECIES / MALES / FEMALES / TOTAL / SEX RATIO / MALES / FEMALES / TOTAL / SEX RATIO / SOURCES
Lemur / catta / 1251 / 1098 / 2349 / 0.53** / 101 / 88 / 189 / 0.53 / 1-4
Hapalemur / griseus / 16 / 14 / 30 / 0.53 / 16 / 14 / 30 / 0.53 / 5
Eulemur / fulvus / 285 / 264 / 549 / 0.52 / 30 / 19 / 49 / 0.61 / 6-9
Eulemur / macaco / 199 / 190 / 389 / 0.51 / 1
Varecia / variegata / 587 / 497 / 1084 / 0.54** / 9,10
Daubentonia / madagascariensis / 10 / 16 / 26 / 0.39 / 11
Propithecus / edwardsi / 18 / 19 / 37 / 0.49 / 18 / 19 / 37 / 0.49 / 12
Propithecus / verreauxi / 56 / 50 / 106 / 0.53 / 13
Cheirogaleus / medius / 148 / 134 / 282 / 0.53 / 14
Microcebus / murinus / 462 / 347 / 809 / 0.57** / 73 / 62 / 135 / 0.54 / 14-17
Mirza / coquereli / 51 / 56 / 107 / 0.48 / 14
Galagoides / demidoff / 25 / 17 / 42 / 0.60 / 10
Galago / moholi / 104 / 83 / 187 / 0.56 / 9
Galago / senegalensis / 359 / 241 / 600 / 0.60** / 10,18,19
Otolemur / crassicaudatus / 618 / 427 / 1045 / 0.59** / 13 / 4 / 17 / 0.77 / 9,10,20
Otolemur / garnetti / 158 / 111 / 269 / 0.59** / 9
Loris / tardigradus / 38 / 51 / 89 / 0.43 / 21
Nycticebus / coucang / 92 / 74 / 166 / 0.55 / 21
Nycticebus / pygmaeus / 95 / 108 / 203 / 0.47 / 21
Tarsius / bancanus / 13 / 4 / 17 / 0.77* / 21
Tarsius / syrichta / 13 / 8 / 21 / 0.62 / 21
Callithrix / geoffroyi / 130 / 109 / 239 / 0.54 / 1
Callithrix / jacchus / 1730 / 1525 / 3255 / 0.53** / 22-27
Callithrix / kuhlii / 134 / 101 / 235 / 0.57* / 28
Callitrhix / pygmaea / 461 / 423 / 884 / 0.52 / 29
Leontopithecus / chrysopygus / 65 / 44 / 109 / 0.60* / 30
Leontopithecus / rosalia / 1654 / 1406 / 3060 / 0.54 / 84 / 74 / 158 / 0.53 / 30-32
Saguinus / imperator / 212 / 164 / 376 / 0.56** / 23,33
Saguinus / labiatus / 107 / 129 / 236 / 0.45 / 23
Saguinus / mystax / 25 / 32 / 57 / 0.44 / 25 / 32 / 57 / 0.44 / 34
Saguinus / oedipus / 1741 / 1430 / 3171 / 0.55** / 1,35-37
Callimico / goeldii / 949 / 911 / 1860 / 0.51 / 38
Cebus / apella / 405 / 157 / 562 / 0.72** / 21 / 20 / 41 / 0.51 / 23,39
Cebus / capucinus / 172 / 75 / 247 / 0.70** / 87 / 52 / 139 / 0.63 / 23,40,41
Cebus / olivaceus / 37 / 58 / 95 / 0.39* / 37 / 58 / 95 / 0.39 / 42
Saimiri / sciureus / 762 / 471 / 1233 / 0.62** / 23
Aotus / nancymai / 70 / 82 / 152 / 0.46 / 43
Aotus / trivirgatus / 129 / 145 / 274 / 0.47 / 1
Pithecia / pithecia / 114 / 98 / 212 / 0.54 / 11 / 6 / 17 / 0.5 / 1,44
Alouatta / caraya / 34 / 30 / 64 / 0.53 / 34 / 30 / 64 / 0.53 / 45
Alouatta / fusca / 12 / 13 / 25 / 0.48 / 12 / 13 / 25 / 0.48 / 46
Alouatta / palliata / 22 / 18 / 40 / 0.55 / 22 / 18 / 40 / 0.55 / 47
Alouatta / seniculus / 328 / 328 / 656 / 0.50 / 328 / 328 / 656 / 0.50 / 48
Ateles / geoffroyi / 514 / 706 / 1220 / 0.42** / 49
Ateles / paniscus / 65 / 106 / 171 / 0.38* / 12 / 32 / 44 / 0.27 / 23,50
Brachyteles / arachnoides / 21 / 38 / 59 / 0.36* / 21 / 38 / 59 / 0.36 / 51
Lagothrix / lagotricha / 66 / 69 / 135 / 0.49 / 11 / 13 / 24 / 0.46 / 52,53
Macaca / arctoides / 208 / 162 / 370 / 0.56* / 54-58
Macaca / cyclopis / 12 / 14 / 26 / 0.46 / 12 / 14 / 26 / 0.47 / 59
Macaca / fascicularis / 1198 / 1006 / 2204 / 0.54* / 93 / 85 / 178 / 0.52 / 55,60-63
Macaca / fuscata / 3100 / 2940 / 6040 / 0.51* / 1519 / 1502 / 3021 / 0.50 / 55,64-72
Macaca / maurus / 17 / 17 / 34 / 0.50 / 17 / 17 / 34 / 0.50 / 73
Macaca / mulatta / 5425 / 5858 / 11283 / 0.48** / 74-81
Macaca / nemestrina / 4244 / 4016 / 8260 / 0.51** / 55,82,83
Macaca / nigra / 175 / 139 / 314 / 0.56* / 43,55
Macaca / radiata / 138 / 107 / 245 / 0.56 / 71,84
Macaca / silenus / 633 / 564 / 1197 / 0.53* / 21
Macaca / sinica / 589 / 571 / 1160 / 0.51 / 589 / 571 / 1160 / 0.51 / 85
Macaca / sylvanus / 807 / 774 / 1581 / 0.51 / 77 / 82 / 159 / 0.48 / 55,86,87
Cercocebus / atys / 28 / 23 / 51 / 0.55 / 1
Cercocebus / galeritus / 12 / 11 / 23 / 0.52 / 1
Cercocebus / torquatus / 62 / 58 / 120 / 0.52 / 1
Lophocebus / albigena / 25 / 20 / 45 / 0.56 / 1,88
Lophocebus / aterrimus / 14 / 10 / 24 / 0.58 / 1
Mandrillus / leucophaeus / 44 / 26 / 70 / 0.63* / 1
Mandrillus / sphinx / 411 / 414 / 825 / 0.50 / 1,89
Papio / anubis / 373 / 333 / 706 / 0.53* / 373 / 333 / 706 / 0.53 / 90-92
Papio / cynocephalus / 683 / 758 / 1441 / 0.47* / 347 / 425 / 772 / 0.45 / 55,93,94
Papio / hamadryas / 299 / 383 / 682 / 0.44** / 1,95
Papio / papio / 122 / 92 / 214 / 0.57 / 96-103
Papio / ursinus / 96 / 98 / 194 / 0.50 / 96 / 98 / 194 / 0.50 / 104-106
Theropithecus / gelada / 98 / 88 / 186 / 0.53 / 51 / 49 / 100 / 0.51 / 55,107
Cercopithecus / aethiops / 552 / 493 / 1045 / 0.53 / 110 / 124 / 234 / 0.47 / 108,112
Cercopithecus / cephus / 9 / 11 / 20 / 0.45 / 55
Cercopithecus / diana / 180 / 169 / 349 / 0.52 / 96-103,114,115
Cercopithecus / hamlyni / 16 / 13 / 29 / 0.55 / 55
Cercopithecus / mitis / 21 / 15 / 36 / 0.58 / 55
Cercopithecus / neglectus / 111 / 112 / 223 / 0.50 / 55
Cercopithecus / petaurista / 22 / 22 / 44 / 0.50 / 55
Erythrocebus / patas / 262 / 270 / 532 / 0.49 / 1
Miopithecus / talapoin / 27 / 17 / 44 / 0.61 / 55
Allenopithecus / nigrovirdis / 25 / 25 / 50 / 0.50 / 116
Colobus / badius / 17 / 25 / 42 / 0.41 / 17 / 25 / 42 / 0.41 / 117
Colobus / guereza / 462 / 446 / 908 / 0.51 / 1
Semnopithecus / entellus / 1318 / 1098 / 2416 / 0.55** / 1089 / 1010 / 2099 / 0.52 / 55,118-121
Presbytis / thomasi / 45 / 58 / 103 / 0.44 / 45 / 58 / 103 / 0.44 / 122
Trachypithecus / cristatus / 115 / 173 / 288 / 0.40** / 27 / 51 / 78 / 0.35 / 55,123,124
Trachypithecus / francoisi / 66 / 72 / 138 / 0.48 / 125
Trachypithecus / obscura / 57 / 39 / 96 / 0.59 / 55
Trachypithecus / phayrei / 27 / 30 / 57 / 0.47 / 27 / 30 / 57 / 0.47 / 126
Hylobates / agilis / 20 / 21 / 41 / 0.49 / 5 / 14 / 19 / 0.26 / 127
Hylobates / concolor / 23 / 9 / 32 / 0.72** / 9 / 3 / 12 / 0.75 / 128
Hylobates / lar / 189 / 169 / 358 / 0.53 / 31 / 28 / 59 / 0.53 / 129
Hylobates / moloch / 32 / 27 / 59 / 0.54 / 130
Hylobates / syndactylus / 207 / 195 / 402 / 0.52 / 131
Hylobates / leukogenys / 74 / 23 / 97 / 0.76** / 132
Hylobates / gabriellae / 37 / 30 / 67 / 0.55 / 132
Pongo / abelii / 292 / 295 / 587 / 0.50 / 16 / 12 / 28 / 0.57 / 133,134
Pongo / pygmaeus / 294 / 249 / 543 / 0.54 / 14 / 11 / 25 / 0.56 / 1,135
Gorilla / gorilla / 493 / 492 / 985 / 0.50 / 136 / 122 / 258 / 0.53 / 136,138
Pan / paniscus / 108 / 127 / 235 / 0.46 / 139
Pan / troglodytes / 1301 / 1320 / 2621 / 0.50 / 258 / 271 / 529 / 0.49 / 140-147

a Classification based on C. P. Groves, Primate Taxonomy; (Smithsonian Institute Press, Washington, DC, 2001).

* = p<0.05, ** = p<0.01

1

Sources of Sex Ratio Data

  1. L. J. Faust, S. D. Thompson, Zoo. Biol.19, 11 (2000).
  2. N. Koyama, M. Nakamichi, R. Oda, N. Miyamoto, S. Ichino, Y. Takahata, Primates42, 1 (2001).
  3. R. W. Sussman, Am. J. Phys. Anthropol. 84, 43 (1991).
  4. J. Parga, R. Lessnau, personal communication
  5. C. M. Nievergelt, T. Mutschler, A. T. C. Feistner, D. S.Woodruff, Am. J. Primatol. 57, 157 (2002).
  6. H. Gachot-Neveu, M. Petit, J. J. Roeder, Int. J. Primatol. 20: 107 (1999).
  7. J. Ostner, P. M. Kappeler, Anim. Behav. 67, 249 (2004).
  8. D. J. Overdorff, A. M. Merenlender, P. Talata, A. Telo, Z. A. Forward, Am. J. Phys. Anthropol. 108, 295 (1999).
  9. S. Watson, J. Ward, K. Izard, D. Stafford, Am. J. Primatol. 38, 303 (1996).
  10. I. W. J. Debyser, Int. J. Primatol.16, 889 (1995).
  11. D. Gibson, North American Regional Aye-aye Studbook, Daubentonia madagascariensis (2004).
  12. P. Wright, S. Pochron, personal communication
  13. D. Haring, Coquerel's Sifaka Studbook, Propithecus verreauxi coquereli International (2004).
  14. A. Baker, personal communication
  15. M. Perret, Behav. Ecol. Sociobiol.27, 447 (1990).
  16. M. Perret, S. Colas, Appl. Anim. Behav. Sci.51, 275 (1997).
  17. M. Eberle, personal communication
  18. M. K. Izard, E. L. Simons, J. Med. Primatol.15, 27 (1986).
  19. L. Nash, personal communication
  20. A. B. Clark, Science201, 163 (1978).
  21. H. Fitch-Snyder, personal communication
  22. H. O. Box, R. C. Hubrecht, Lab. Anim.21, 249 (1987).
  23. I. W. J. Debyser, Int. J. Primatol. 16, 909 (1995).
  24. C. E. Jaquish, S. D. Tardif, J. M. Cheverud, Am. J. Primatol. 42, 269 (1997).
  25. T. B. Poole, R. G. Evans, Lab. Anim. 16, 88 (1982).
  26. H. Rothe, K. Darms, A. Koenig, Lab. Anim.26, 88 (1992).
  27. M. B. C. Sousa, H. P. A. Peregrino, M. F. C. Cirne, M. T. S. Mota, Primates40, 327 (1999).
  28. J. French, C. Ross, personal communication
  29. D. Aden, personal communication
  30. J. A. French, A. Pissinatti, A. F. Coimbra, Am. J. Primatol. 39, 17 (1996)
  31. J. Dietz, A. Baker, Anim. Behav.46, 1067 (1993).
  32. J. Ballou, personal communication
  33. A. J. Baker, F. Woods, Am. J. Primatol.26, 1 (1992).
  34. P. A. Garber, L. Moya, C. Malaga, Folia Primatol.42, 17 (1984).
  35. S. Evans, Zoo. Biol. 2, 47 (1983).
  36. E. C. Price, W. C. McGrew, Am. J. Primatol. 20, 1 (1990).
  37. C. T. Snowdon, A. Savage, P. B. McConnell,Lab. Anim. Sci.35, 477 (1985).
  38. D. Warneke, personal communication
  39. M. S. Di Bitteti, C. H. Janson, Int. J. Primatol.22, 127-142 (2001).
  40. L. M. Fedigan, Int. J. Primatol.24, 723 (2003).
  41. S. Perry, personal communication
  42. J. G. Robinson, T. G. O’Brien, Am. Nat. 138, 1173 (1991).
  43. A. Gozalo, E. Montoya, Am. J. Primatol. 21, 61 (1990).
  44. M. Norconk, personal communication
  45. D. I. Rumiz, Am. J. Primatol. 21, 279 (1990).
  46. K. B. Strier, S. L. Mendes, R. R. Santos, Am. J. Primatol. 55, 87 (2001).
  47. M. R. Clarke, K. E. Glander, in Female Primates: Studies by Women Primatologists, M. F. Small, Ed. (Alan Liss, New York, 1984) pp. 111-126.
  48. R. Rudran, E. Fernandez-Duque, Int. J. Primatol. 24, 925 (2003).
  49. S. Siers, Central American Spider Monkey Studbook. New World Primate Taxon Advisory Group of the American Zoo and Aquarium assocation (2004).
  50. M. McFarland-Symington,Behav. Ecol. Sociobiol.20, 421 (1987).
  51. K. B. Strier, Biotropica32, 903 (2000).
  52. J. C. Mooney, P. C. Lee, Zoo Biol.18, 421 (1999).
  53. A. Nishimura, Int. J. Primatol. 59, 99 (2003).
  54. I. S. Bernstein, Folia Primatol.33, 20 (1980).
  55. I. W. J. Debyser, Int. J. Primatol.16, 935 (1995).
  56. A. Estrada, R. Estrada, Primates22, 503 (1981).
  57. K. Nieuwenhuijsen, A. J. J. C. Lammers, K. J. Deneef, A. K. Slob, R. Int. J. Primatol.6, 77 (1985).
  58. R. J. Rhine, Am. J. Primatol. 32, 145 (1994).
  59. H. Y. Wu, Y. S. Lin, Primates33, 85 (1992).
  60. W. Angst,in Recent advances in primatology Vol. III Conservation, D.Chivers, W. Lane Petter, Eds. (Academic Press, London, 1978) pp. 269-272.
  61. J. Erwin,Theriogenology7, 357 (1977).
  62. M. A. van Noordwijk, C. P. van Schaik, Primates40, 105 (1999).
  63. C. P. van Schaik, W. J. Netto, A. J. J. van Amerongen, H. Westland, Am. J. Primatol. 19, 147 (1989).
  64. L. M. Fedigan, S. Zohar, Am. J. Phys. Anthropol. 102, 161 (1997).
  65. F. Fukuda, Primates29, 477 (1988).
  66. M. Hiraiwa, Primates22, 309 (1981).
  67. N. Itoigawa, et al., Primates33, 49 (1992).
  68. N. Koyama, Y. Takahata, M. A. Huffman, K. Norikoshi, H. Suzuki, Primates 33, 33 (1992).
  69. M. Nakamichi, H. Nobuhara, T. Nobuhara, M. Nakahashi, H. Nigi,Am. J. Primatol. 42, 225 (1997).
  70. G.. Schino, R. Cozzolino, A. Troiso, Folia Primatol.70, 254 (1999).
  71. Y. Takahata, et al., Primates39, 339 (1998).
  72. K. Watanabe, A. Mori, M. Kawai, Primates33, 1 (1992).
  73. K. Okamoto, S. Matsumura, S. Watanabe, Am. J. Primatol. 52, 1 (2000).
  74. F. B. Bercovitch, A. Widdig, P. Nurnberg, Behav. Ecol. Sociobiol.48, 1 (2000).
  75. B. Dyke, T. B. Gage, P. M Mamelka, R. W. Goy, W. H. Stone, Am. J. Primatol. 10, 257 (1986).
  76. D. Maestripieri, Folia Primatol.72, 44 (2001).
  77. D. P. Martin, Am. J. Primatol. 7, 39 (1984).
  78. C. M. Nevison, F. D. G. Rayment, M. J. A. Simpson, Am. J. Primatol. 39, 123 (1996).
  79. R. J. Rawlins, M. J. Kessler, Am. J. Primatol.9, 87 (1986).
  80. M. F. Small, D. G.. Smith, Int. J. Primatol. 7, 289 (1986).
  81. D. Meikle, personal communication
  82. J. C. Ha, R. L. Robinette, G. P. Sackett, Am. J. Primatol.52, 187 (2000).
  83. D. Maestripieri, J. Mammal. 83, 563 (2002).
  84. J. B. Silk, Am. Nat.132, 1 (1988).
  85. W. P. J. Dittus, Behav. Ecol. Sociobiol.44, 149 (1998).
  86. A. Paul, J. Kuester, Ethology74, 117 (1987).
  87. N. Ménard, D. Vallet, Am. J. Primatol.30, 101 (1993).
  88. B. L. Deputte, Folia Primatol.57, 57 (1991).
  89. J. Setchell, J. Wickings, personal communication
  90. B. Smuts, & N. Nicolson, Am. J. Primatol. 19, 229 (1989).
  91. V. Bentley-Condit, personal communication
  92. C. Packer, personal communication
  93. S. K. Wasser, G. Norton, Behav. Ecol. Sociobiol.32, 273 (1993).
  94. J. Altmann, S. Alberts, personal communication
  95. R. Deleu, I. Leinfelder, personal communication
  96. P. J. S. Olney, Ed. Int. Zoo Yearbk22, 409 (1982).
  97. P. J. S. Olney, Ed. Int. Zoo Yearbk23, 311 (1984).
  98. P. J. S. Olney, Ed. Int. Zoo Yearbk24/25, 511 (1986).
  99. P. J. S. Olney, Ed. Int. Zoo Yearbk26, 471 (1987).
  100. P. J. S. Olney, Ed. Int. Zoo Yearbk27, 399 (1988).
  101. P. J. S. Olney, Ed. Int. Zoo Yearbk28, 506 (1989).
  102. P. J. S. Olney, Ed. Int. Zoo Yearbk29, 409 (1990).
  103. P. J. S. Olney, Ed. Intl. Zoo Yearbk30, 409 (1991).
  104. D. L. Cheney et al., Int. J. Primatol. 25, 401 (2004).
  105. L. Barrett, S.P. Henzi, personal communication
  106. S.P. Henzi, personal communication
  107. R. I. M. Dunbar, Reproductive Decisions: an Economic Analysis of Gelada Baboon Social Strategies (Princeton Univ. Press, Princeton, 1984).
  108. C. A. Chapman, L. J. Chapman, K. S. Richardson, Oikos56, 132 (1989).
  109. D. L. Cheney, R. M. Seyfarth, S. J. Andelman, P. C. Lee, in Reproductive Success, in Reproductive Success, T. H. Clutton-Brock, Ed. (Univ. of Chicago Press, Chicago, 1988) pp. 384-402.
  110. L. A. Fairbanks, M. T. McGuire, Behaviour132, 733 (1995)
  111. J. A. Horrocks, Int. J. Primatol. 7, 31 (1986).
  112. L. Fairbanks, M. Jorgensen, personal communication
  113. H. Kushner, N. Kraftschreyer, E. T. Angelakos, E. M. Wudarski, J. Med. Primatol.11, 77 (1982).
  114. P. J. S. Olney, Ed. Intl. Zoo Yearbk31, 333 (1992).
  115. P. J. S. Olney, Ed. Intl. Zoo Yearbk32, 433 (1993).
  116. S. Averill, Allen's swamp monkey (Allenopithecus nigroviridis) North American Regional Studbook, 2nd Edition (2003).
  117. T. T. Struhsaker, T. R. Pope, Behaviour117, 182 (1991)
  118. C. Borries, V. Sommer, A. Srivastava, Int. J. Primatol.12, 231 (1991).
  119. D. Harley, Am. J. Primatol.15, 103 (1988).
  120. J. Ostner, C. Borries, O. Schülke,A. Koenig, Ethology111, 924 (2005).
  121. P. Winkler, Human Evol.3, 227 (1988).
  122. S. A. Wich, et al., Am. J. Primatol. (in press).
  123. N. Shelmidine, C. Borries, C. McCann, personal communication (what are their initials?)
  124. K. Wolf, Ph.D. thesis (Yale Univ., 1984).
  125. B. Jacobs, personal communication
  126. C. Borries, personal communication
  127. J. C. Mitani, Int. J. Primatol.11, 411 (1990).
  128. Z. H. Liu, Y. Z. Zhang, H. S. Jiang, C. Southwick,Am. J. Primatol. 19, 247 (1989).
  129. U. Reichard, personal communication
  130. L. Cocks. International Studbook for Javan Gibbons (Hylobates moloch) (2005.
  131. J. Ray, P.R. Milham, European Studbook for the Siamang Gibbon (Hylobates syndactylus), Number 6, 2002
  132. P. Moisson, F. Baudier, Northern white-cheeked gibbon ― Nomascus leucogenys, Southern white-cheeked gibbon ― Nomascus siki, Red-cheeked gibbon ― Nomascus gabriellae, European Studbook, Number 1 (2004).
  133. S. A. Wich, et al.,J. Hum. Evol.47, 385 (2004).
  134. L. Perkins, personal communication
  135. I. Singleton, C. P. van Schaik, Folia Primatol.73, 1 (2002).
  136. A. M. Robbins, M. M. Robbins, K. Fawcett, Ethology (in press).
  137. J. Yamagiwa, J. Kahekwa,in Mountain Gorillas: Three Decades of Research at Karisoke, M. M. Robbins, P. Sicotte, K. Stewart, Eds. (Cambridge Univ. Press, Cambridge, 2001), pp. 89-122.
  138. D. Wharton. North American Regional Studbook: Western lowland gorilla, Wildlife Conservation Society, New York, and the American Association of Zoos and Aquaria (2003).
  139. G. Reinartz, Zoological Society of Milwaukee and Bonobo Species Survival Plan (2002).
  140. C. Boesch, H. Boesch-Achermann, The Chimpanzees of the Taï Forest: Behavioural Ecology and Evolution (Oxford Univ. Press, Oxford, 2000).
  141. T. Nishida et al., Am. J. Primatol.59, 99 (2003).
  142. K. A. Roof, W. D. Hopkins, M. K. Izard, M. Hook, A. J. Schapiro, Am. J. Primatol. 67, 199 (2005).
  143. Y. Sugiyama,Am. J. Phys. Anthropol. 124, 154 (2004).
  144. S. Ross, North American Regional Studbook for the Chimpanzee (Pan troglodytes), Lincoln Park Zoo, Chicago, IL. (2003).
  145. J. Littleton, personal communication
  146. A.E. Pusey, personal communication
  147. V. Reynolds, M. Emery-Thompson, personal communication

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