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Human Nature

, Volume 30, Issue 1, pp 71–97 | Cite as

Foraging Performance, Prosociality, and Kin Presence Do Not Predict Lifetime Reproductive Success in Batek Hunter-Gatherers

  • Thomas S. KraftEmail author
  • Vivek V. Venkataraman
  • Ivan Tacey
  • Nathaniel J. Dominy
  • Kirk M. Endicott
Article

Abstract

Identifying the determinants of reproductive success in small-scale societies is critical for understanding how natural selection has shaped human evolution and behavior. The available evidence suggests that status-accruing behaviors such as hunting and prosociality are pathways to reproductive success, but social egalitarianism may diminish this pathway. Here we introduce a mixed longitudinal/cross-sectional dataset based on 45 years of research with the Batek, a population of egalitarian rain forest hunter-gatherers in Peninsular Malaysia, and use it to test the effects of four predictors of lifetime reproductive success: (i) foraging return rate, (ii) sharing proclivity, (iii) cooperative foraging tendency, and (iv) kin presence. We found that none of these factors can explain variation in lifetime reproduction among males or females. We suggest that social egalitarianism, combined with strikingly low infant and juvenile mortality rates, can mediate the pathway between foraging, status-accruing behavior, and reproductive success. Our approach advocates for greater theoretical and empirical attention to quantitative social network measures, female foraging, and fitness outcomes.

Keywords

Hunter-gatherers Reproductive success Foraging Prosociality Sharing Cooperation 

Notes

Acknowledgments

We thank all the Batek who have generously participated in our collective research over the years. We would also like to thank Karen Endicott for help in collecting data, Aya Kawai for sharing information on Batek kinship and genealogy, and Lye Tuck-Po and Thomas Overly for advice and assistance. Kristen Hawkes, Mark McPeek, and several anonymous reviewers provided invaluable feedback on earlier drafts.

This work was supported by the Wenner-Gren Foundation (grant num. 8551 to IT), National Science Foundation (Graduate Research Fellowships to TSK and VVV; DDRIG to TSK), National Geographic Society (Young Explorer’s Grant to TSK), Leakey Foundation (Research Grant to TSK), and the Claire Garber Goodman Fund at Dartmouth College. The Endicotts’ research was supported by the National Institute of Mental Health, University of Malaya, Australian National University, Fulbright-Hays Foundation, American Council of Learned Societies, and Social Science Research Council.

This research was approved by Dartmouth College’s Committee for the Protection of Human Subjects (protocol #22410) and was conducted with full approval and support of the Malaysian government and Jabatan Hal Ehwal Orang Asli (formerly Department of Aboriginal Affairs) under permits VC/60050/70; #045847; 581/70, VC/60050; #147485, VC/60050; #4227, VC/60050; 674/90 (KME), UPE: 40/200/19/2029, UPE: 40/200/19/2889, and JPHL&TN (IP) 80-4/2 Jilid (IT).

Supplementary material

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References

  1. Aghakhanian, F., Yunus, Y., Naidu, R., Jinam, T., Manica, A., Hoh, B. P., & Phipps, M. E. (2015). Unravelling the genetic history of negritos and indigenous populations of Southeast Asia. Genome Biology and Evolution, 7(5), 1206–1215.Google Scholar
  2. Alvard, M. S. (2003). Kinship, lineage, and an evolutionary perspective on cooperative hunting groups in Indonesia. Human Nature, 14(2), 129–163.Google Scholar
  3. Alvard, M. S., & Gillespie, A. (2004). Good Lamalera whale hunters accrue reproductive benefits. Research in Economic Anthropology, 23(4), 223–245.Google Scholar
  4. Apicella, C. L. (2014). Upper-body strength predicts hunting reputation and reproductive success in Hadza hunter-gatherers. Evolution and Human Behavior, 35(6), 508–518.Google Scholar
  5. Apicella, C. L., Marlowe, F. W., Fowler, J. H., & Christakis, N. A. (2012). Social networks and cooperation in hunter-gatherers. Nature, 481(7382), 497–501.Google Scholar
  6. Bailey, R. C. (1991). The behavioral ecology of Efe pygmy men in the Ituri Forest, Zaire. Ann Arbor: University of Michigan Museum.Google Scholar
  7. Bailey, R. C., & Aunger, R. (1989). Significance of the social relationships of Efe pygmy men in the Ituri Forest, Zaire. American Journal of Physical Anthropology, 78(4), 495–507.Google Scholar
  8. Benjamin, G. (1976). Austroasiatic subgroupings and prehistory in the Malay Peninsula. Oceanic Linguistics Special Publication, 13, 37–128.Google Scholar
  9. Bliege Bird, R. (1999). Cooperation and conflict: the behavioral ecology of the sexual division of labor. Evolutionary Anthropology, 8(2), 65–75.Google Scholar
  10. Bliege Bird, R., Smith, E. A., & Bird, D. W. (2001). The hunting handicap: costly signaling in human foraging strategies. Behavioral Ecology and Sociobiology, 50(1), 9–19.Google Scholar
  11. Bonacich, P., & Lloyd, P. (2001). Eigenvector-like measures of centrality for asymmetric relations. Social Networks, 23(3), 191–201.Google Scholar
  12. Cameron, A. C., & Trivedi, P. K. (1990). Regression-based tests for overdispersion in the Poisson model. Journal of Econometrics, 46(3), 347–364.Google Scholar
  13. Campbell, K. L., & Wood, J. W. (1988). Fertility in traditional societies. In Natural human fertility: Social and biological determinants (pp. 39–69). Basingstoke: Macmillan Press.Google Scholar
  14. Cashdan, E. A. (1980). Egalitarianism among hunters and gatherers. American Anthropologist, 82(1), 116–120.Google Scholar
  15. Chudek, M., & Henrich, J. (2011). Culture–gene coevolution, norm-psychology and the emergence of human prosociality. Trends in Cognitive Sciences, 15(5), 218–226.Google Scholar
  16. Clutton-Brock, T. H. (1988). Reproductive success: Studies of individual variation in contrasting breeding systems. Chicago: University of Chicago Press.Google Scholar
  17. Crognier, E. (2003). Reproductive success: which meaning? American Journal of Human Biology, 15, 352–360.Google Scholar
  18. Csardi, G., & Nepusz, T. (2006). The igraph software package for complex network research. InterJournal, Complex Systems, 1695, 1–9.Google Scholar
  19. Dart, R. A. (1953). The predatory transition from ape to man. International Anthropological and Linguistic Review, 1, 201–218.Google Scholar
  20. Dunn, F. (1975). Rain-forest collectors and traders: A study of resource utilization in modern and ancient Malaya (Vol. 5). Kuala Lumpur: The Malaysian Branch of the Royal Asiatic Society.Google Scholar
  21. Dwyer, P. D., & Minnegal, M. (1993). Are Kubo hunters “show offs”? Ethology and Sociobiology, 14(1), 53–70.Google Scholar
  22. Endicott, K. M. (1979). The hunting methods of the Batek Negritos of Malaysia: A problem of alternatives. Canberra Anthropology, 2(2), 7–22.Google Scholar
  23. Endicott, K. M. (1984). The economy of the Batek of Malaysia: annual and historical perspectives. Research in Economic Anthropology, 6, 29–52.Google Scholar
  24. Endicott, K. M. (2011). Cooperative autonomy: Social solidarity among the Batek of Malaysia. In T. Gibson & K. Sillander (Eds.), Anarchic solidarity: Authority, equality, and fellowship in Southeast Asia (pp. 62–87). New Haven: Yale University Council on Southeast Asia Studies.Google Scholar
  25. Endicott, P. (2013). Revisiting the “negrito” hypothesis: A transdisciplinary approach to human prehistory in Southeast Asia. Human Biology, 85(1-3), 7–20.Google Scholar
  26. Endicott, K. M., & Endicott, K. L. (2008). The headman was a woman: The gender egalitarian Batek of Malaysia. Long Grove: Waveland Press.Google Scholar
  27. Endicott, K. L., & Endicott, K. M. (2014). Batek childrearing and morality. In D. Narvaez, A. Fuentes, & P. Gray (Eds.), Ancestral landscapes in human evolution: Culture, childrearing and social wellbeing (pp. 108–125). New York: Oxford University Press.Google Scholar
  28. Gurven, M. (2004). To give and to give not: The behavioral ecology of human food transfers. Behavioral and Brain Sciences, 27, 543–559.Google Scholar
  29. Gurven, M., & Hill, K. (2009). Why do men hunt? A reevaluation of “Man the Hunter” and the sexual division of labor. Current Anthropology, 50(1), 51–74.Google Scholar
  30. Gurven, M., & von Rueden, C. (2006). Hunting, social status and biological fitness. Social Biology, 53(1-2), 81–99.Google Scholar
  31. Gurven, M., Hill, K., Kaplan, H. S., Hurtado, A., & Lyles, R. (2000). Food transfers among Hiwi foragers of Venezuela: tests of reciprocity. Human Ecology, 28(2), 171–218.Google Scholar
  32. Gurven, M., Allen-Arave, W., Hill, K., & Hurtado, A. M. (2001). Reservation food sharing among the Ache of Paraguay. Human Nature, 12, 273–297.Google Scholar
  33. Gurven, M., von Rueden, C., Stieglitz, J., Kaplan, H. S., & Rodriguez, D. E. (2014). The evolutionary fitness of personality traits in a small-scale subsistence society. Evolution and Human Behavior, 35(1), 17–25.Google Scholar
  34. Handcock, M. S., Hunter, D. R., Butts, C. T., Goodreau, S. M., & Morris, M. (2008). statnet: Software tools for the representation, visualization, analysis and simulation of network data. Journal of Statistical Software, 24(1), 1548–7660.Google Scholar
  35. Hansen, M. C., Potapov, P. V., Moore, R., Hancher, M., Turubanova, S. A., Tyukavina, A., et al. (2013). High-resolution global maps of 21st-century forest cover change. Science, 342(6160), 850–853.Google Scholar
  36. Hawkes, K. (1996). Foraging differences between men and women. In James Steele and Stephen Shennan (Eds.), Power, sex and tradition: The archaeology of human ancestry (pp. 283–305). London: Routledge.Google Scholar
  37. Hawkes, K., & Bliege Bird, R. (2002). Showing off, handicap signaling, and the evolution of men’s work. Evolutionary Anthropology, 11(2), 58–67.Google Scholar
  38. Hawkes, K., O’Connell, J. F., & Blurton Jones, N. G. (2001). Hunting and nuclear families: some lessons from the Hadza about men’s work. Current Anthropology, 42(5), 681–709.Google Scholar
  39. Headland, T. N. (1987). The wild yam question: how well could independent hunter-gatherers live in a tropical rain forest ecosystem? Human Ecology, 15(4), 463–491.Google Scholar
  40. Hewlett, B. S. (1988). Sexual selection and paternal investment among Aka pygmies. In L. Betzig, M. B. Mulder, & P. Turke (Eds.), Human reproductive behavior (pp. 263–276). Cambridge: Cambridge University Press.Google Scholar
  41. Hill, K. (1982). Hunting and human evolution. Journal of Human Evolution, 11(6), 521–544.Google Scholar
  42. Hill, K., & Hurtado, A. M. (1996). Ache life history: The ecology and demography of a foraging people. New York: Aldine/Transaction.Google Scholar
  43. Hill, K., & Kintigh, K. (2009). Can anthropologists distinguish good and poor hunters? Implications for hunting hypotheses, sharing conventions, and cultural transmission. Current Anthropology, 50(3), 369–378.Google Scholar
  44. Hill, K., Walker, R. S., Božičević, M., Eder, J., Headland, T., Hewlett, B., et al. (2011). Co-residence patterns in hunter-gatherer societies show unique human social structure. Science, 331(6022), 1286–1289.Google Scholar
  45. Hurtado, A. M., Hill, K., Hurtado, I., & Kaplan, H. S. (1992). Trade-offs between female food acquisition and child care among Hiwi and Ache foragers. Human Nature, 3(3), 185–216.Google Scholar
  46. Jaeggi, A. V., & Gurven, M. (2013). Reciprocity explains food sharing in humans and other primates independent of kin selection and tolerated scrounging: a phylogenetic meta-analysis. Proceedings of the Royal Society of London B: Biological Sciences, 280(1768), 20131615.Google Scholar
  47. Kelly, R. L. (2013). The lifeways of hunter-gatherers: The foraging spectrum. Cambridge: Cambridge University Press.Google Scholar
  48. Kent, S. (1996). Hunting variability at a recently sedentary Kalahari village. In S. Kent (Ed.), Cultural diversity among twentieth-century foragers: An African perspective (pp. 125–156). Cambridge: Cambridge University Press.Google Scholar
  49. Kirchengast, S. (2000). Differential reproductive success and body size in !Kung San people from northern Namibia. Collegium Antropologicum, 24(1), 121–132.Google Scholar
  50. Lee, R. B. (1968). What hunters do for a living, or, how to make out on scarce resources. In R. B. Lee & I. DeVore (Eds.), Man the hunter (pp. 30–48). Chicago: Aldine.Google Scholar
  51. Lee, R. B. (1969). Eating Christmas in the Kalahari. Natural History, 78(10), 14–22.Google Scholar
  52. Lee, R. B. (2003). The Dobe Ju/’hoansi (3rd ed.). Belmont, CA: Wadsworth.Google Scholar
  53. Lye, T.-P. (1997). Knowledge, forest, and hunter-gatherer movement: The Batek of Pahang, Malaysia. PhD dissertation, University of Hawai’i.Google Scholar
  54. Lye, T.-P. (2004). Changing pathways: Forest degradation and the Batek of Pahang, Malaysia. Lanham: Lexington Books.Google Scholar
  55. Marlowe, F. (2000). The patriarch hypothesis: an alternative explanation of menopause. Human Nature, 11(1), 27–42.Google Scholar
  56. Nolin, D. A. (2010). Food-sharing networks in Lamalera, Indonesia: reciprocity, kinship, and distance. Human Nature, 21(3), 243–268.Google Scholar
  57. Nolin, D. A. (2011). Kin preference and partner choice: patrilineal descent and biological kinship in Lamaleran cooperative relationships. Human Nature, 22(1-2), 156–176.Google Scholar
  58. R Core Team. (2015). R: A language and environment for statistical computing. Vienna: R Foundation for Statistical Computing.Google Scholar
  59. Sear, R., & Mace, R. (2008). Who keeps children alive? A review of the effects of kin on child survival. Evolution and Human Behavior, 29(1), 1–18.Google Scholar
  60. Sherman, P. W., & Reeve, H. K. (1997). Forward and backward: alternative approaches to studying human social evolution. In L. Betzig (Ed.), Human nature: a critical reader (pp. 147–158). New York: Oxford University Press.Google Scholar
  61. Singh, M. (2018). The cultural evolution of shamanism. Behavioral and Brain Sciences, 41, e66.Google Scholar
  62. Smith, E. A. (1979). Human adaptation and energetic efficiency. Human Ecology, 7(1), 53–74.Google Scholar
  63. Smith, E. A. (2004). Why do good hunters have higher reproductive success? Human Nature, 15(4), 343–364.Google Scholar
  64. Smith, E. A., & Bliege Bird, R. L. (2000). Turtle hunting and tombstone opening: public generosity as costly signaling. Evolution and Human Behavior, 21(4), 245–261.Google Scholar
  65. Smith, E. A., Mulder, M. B., & Hill, K. (2001). Controversies in the evolutionary social sciences: a guide for the perplexed. Trends in Ecology & Evolution, 16(3), 128–135.Google Scholar
  66. Smith, E. A., Bliege Bird, R., & Bird, D. W. (2003). The benefits of costly signaling: Meriam turtle hunters. Behavioral Ecology, 14(1), 116–126.Google Scholar
  67. Smith, E. A., Hill, K., Marlowe, F., Nolin, D., Wiessner, P., Gurven, M., et al. (2010). Wealth transmission and inequality among hunter-gatherers. Current Anthropology, 51(1), 19.Google Scholar
  68. Smith, D., Schlaepfer, P., Major, K., Dyble, M., Page, A. E., Thompson, J., et al. (2017). Cooperation and the evolution of hunter-gatherer storytelling. Nature Communications, 8, 1853.Google Scholar
  69. Sodhi, N. S., Koh, L. P., Brook, B. W., & Ng, P. K. L. (2004). Southeast Asian biodiversity: an impending disaster. Trends in Ecology & Evolution, 19(12), 654–660.Google Scholar
  70. Stephens, D. W., & Krebs, J. R. (1986). Foraging theory. Princeton: Princeton University Press.Google Scholar
  71. Suratman, M., Dain, M., Singh, H., & Ismail, N. (2012). Taman Negara: Towards biodiversity conservation and sustainability. Selangor Darul Ehsan: Universiti Teknologi MARA, Penerbit Press.Google Scholar
  72. Symons, D. (1989). A critique of Darwinian anthropology. Ethology and Sociobiology, 10(1), 131–144.Google Scholar
  73. Venkataraman, V. V., Kraft, T. S., Dominy, N. J., & Endicott, K. M. (2017). Hunter-gatherer residential mobility and the marginal value of rainforest patches. Proceedings of the National Academy of Sciences, 114(12), 3097–3102.Google Scholar
  74. von Rueden, C., & Jaeggi, A. V. (2016). Men’s status and reproductive success in 33 nonindustrial societies: Effects of subsistence, marriage system, and reproductive strategy. Proceedings of the National Academy of Sciences USA, 113(39), 10824–10829.Google Scholar
  75. von Rueden, C., Gurven, M., & Kaplan, H. S. (2008). The multiple dimensions of male social status in an Amazonian society. Evolution and Human Behavior, 29(6), 402–415.Google Scholar
  76. von Rueden, C., Gurven, M., & Kaplan, H. S. (2010). Why do men seek status? Fitness payoffs to dominance and prestige. Proceedings of the Royal Society B: Biological Sciences, 278, 2223–2232.Google Scholar
  77. von Rueden, C., Lukaszewski, A. W., & Gurven, M. (2015). Adaptive personality calibration in a human society: effects of embodied capital on prosocial traits. Behavioral Ecology, 26(4), 1071–1082.Google Scholar
  78. Washburn, S., & Lancaster, C. (1968). The evolution of hunting. In R. B. Lee & I. DeVore (Eds.), Man the hunter (pp. 293–303). Chicago: Aldine.Google Scholar
  79. Wiessner, P. (2002). Hunting, healing, and hxaro exchange: a long-term perspective on !Kung (Ju/’hoansi) large-game hunting. Evolution and Human Behavior, 23(6), 407–436.Google Scholar
  80. Woodburn, J. (1982). Egalitarian societies. Man, 17, 431–451.Google Scholar
  81. Ziker, J. P. (2014). Sharing, subsistence, and social norms in Northern Siberia. In J. Ensminger & J. Henrich (Eds.), Experimenting with social norms: Fairness and punishment in cross-cultural perspective (pp. 337–356). New York: Russell Sage Foundation.Google Scholar
  82. Ziker, J. P., Nolin, D. A., & Rasmussen, J. (2016). The effects of wealth on male reproduction among monogamous hunter-fisher-trappers in Northern Siberia. Current Anthropology, 57(2), 221–229.Google Scholar

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Authors and Affiliations

  1. 1.Department of AnthropologyDartmouth CollegeHanoverUSA
  2. 2.Department of AnthropologyUniversity of California-Santa BarbaraSanta BarbaraUSA
  3. 3.Department of Human Evolutionary BiologyHarvard UniversityCambridgeUSA
  4. 4.Exeter Anthrozoology as Symbiotics Ethics Working GroupUniversity of ExeterExeterUK

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