Abstract
In some small-scale societies, a sexual division of labor is common. For subadult hunter-gatherers, the onset of this division dates to middle childhood and the start of puberty; however, there is apparently no physiological explanation for this timing. The present study uses an experimental approach to evaluate possible energetic differences by sex in gathering-related activities. The energetic cost of gathering-related activities was measured in a sample of 42 subjects of both sexes aged between 8 and 14 years. Body mass and other anthropometric variables were also recorded. Our results show that the energetic differences in the simulated gathering activities depend only on body mass. Both sexes expend a similar amount of energy during locomotion activities related to gathering. Discarding the energetic factor, the sexual division of tasks may be explained as an adaptation to acquire the skills needed to undertake the complex activities required during adulthood as early as possible. Carrying out gathering activities during childhood and adolescence could be favored by the growth and development cycles of Homo sapiens. Moreover, if most of the energetic costs of gathering activities depend on body mass, the delayed growth in humans relative to other primates allows subadults to practice these tasks for longer periods, and to become better at performing them. In fact, this strategy could enable them to acquire adults’ complex skills at a low energetic cost that can be easily subsidized by other members of the group.
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Data Availability
Data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy restrictions.
References
Abrahamyan, D. O., Gazarian, A., & Braillon, P. (2008). Estimation of stature and length of limb segments in children and adolescents from whole-body dual-energy X-ray absorptiometry scans. Pediatric Radiology, 38(3), 311–315. https://doi.org/10.1007/s00247-007-0720-x
Antón, S. C., & Snodgrass, J. J. (2012). Origins and evolution of genus Homo. Current Anthropology, 53(S6), S479–S496. https://doi.org/10.1086/667692
Barton, R. A. (1999). The evolutionary ecology of the primate brain. In P. C. Lee (Ed.), Comparative primate socioecology (pp. 167–194). Cambridge University Press.
Bermúdez de Castro, J. M., Martinón-Torres, M., Prado, L., Gómez-Robles, A., Rosell, J., López-Polín, L., et al. (2010). New immature hominin fossil from European Lower Pleistocene shows the earliest evidence of a modern human dental development pattern. Proceedings of the National Academy of Sciences of the United States of America, 107(26), 11739–11744. https://doi.org/10.1073/pnas.1006772107
Bermúdez de Castro, J. M., Ramírez Rozzi, F., Martinón-Torres, M., Sarmiento Perez, S., & Rosas, A. (2003). Patterns of dental development in Lower and Middle Pleistocene hominins from Atapuerca (Spain). In J. L. Thompson, G. E. Krovitz, & A. J. Nelson (Eds.), Patterns of growth and development in the genus Homo (pp. 246–270). Cambridge: Cambridge University Press. https://doi.org/10.1017/cbo9780511542565.010
Bird, D. W. (1997). Delayed reciprocity and tolerated theft: The behavioral ecology of food-sharing strategies. Current Anthropology, 38(1), 49–78. https://doi.org/10.1086/204581
Bird, D. W., & Bliege Bird, R. (2002). Children on the reef: Slow learning or strategic foraging? Human Nature, 13(2), 269–297. https://doi.org/10.1007/s12110-002-1010-9
Bird, D. W., & Bliege Bird, R. (2005). Mardu children’s hunting strategies in the Western Desert, Australia. In B. S. Hewlett & M. Lamb (Eds.), Hunter-gatherer childhoods: Evolutionary, developmental and cultural perspectives (pp. 129–146). Aldine de Gruyter.
Bliege Bird, R. (1999). Cooperation and conflict: The behavioral ecology of the sexual division of labor. Evolutionary Anthropology, 8(2), 65–75. https://doi.org/10.1002/(SICI)1520-6505(1999)8:2%3c65::AID-EVAN5%3e3.0.CO;2-3
Bliege Bird, R. (2007). Fishing and the sexual division of labor among the Meriam. American Anthropologist, 109(3), 442–451. https://doi.org/10.1525/aa.2007.109.3.442
Bliege Bird, R., & Bird, D. W. (2002). Constraints of knowing or constraints of growing? Human Nature, 13(2), 239–267. https://doi.org/10.1007/s12110-002-1009-2
Bliege Bird, R., & Bird, D. W. (2008). Why women hunt. Current Anthropology, 49(4), 655–693. https://doi.org/10.1086/587700
Blurton Jones, N. (1984). A selfish origin for human food sharing: Tolerated theft. Ethology and Sociobiology, 5(1), 1–3. https://doi.org/10.1016/0162-3095(84)90030-X
Blurton Jones, N. (1986). Bushman birth spacing: A test for optimal interbirth intervals. Ethology and Sociobiology, 7(2), 91–105. https://doi.org/10.1016/0162-3095(86)90002-6
Blurton Jones, N. (1987a). Tolerated theft, suggestions about the ecology and evolution of sharing, hoarding and scrounging. Social Science Information, 26(1), 31–54. https://doi.org/10.1177/053901887026001002
Blurton Jones, N. (1987b). Bushman birth spacing: Direct tests of some simple predictions. Ethology and Sociobiology, 8(3), 183–203. https://doi.org/10.1016/0162-3095(87)90043-4
Blurton Jones, N., Hawkes, K., & O’Connell, J. F. (1989). Modelling and measuring costs of children in two foraging societies. In V. Standen & R. A. Foley (Eds.), Comparative socioecology: The behavioural ecology of humans and other mammals (pp. 367–390). Blackwell Scientific.
Blurton Jones, N., & Marlowe, F. (2002). Selection for delayed maturity. Human Nature, 13(2), 199–238. https://doi.org/10.1007/s12110-002-1008-3
Blurton Jones, N., & Sibly, R. M. (1978). Testing adaptiveness of culturally determined behaviour: do Bushman women maximize their reproductive success by spacing births widely and foraging seldom? In V. Reynolds & N. G. Blurton Jones (Eds.), Human behavior and adaptation. (pp. 135–157). Symposia for the Study of Human Biology, Vol. 18. Wiley. https://www.popline.org/node/447419
Bock, J. (2002a). Learning, life history, and productivity: Children’s lives in the Okavango Delta, Botswana. Human Nature, 13(2), 161–197. https://doi.org/10.1007/s12110-002-1007-4
Bock, J. (2002b). Evolutionary demography and intrahousehold time allocation: School attendance and child labor among the Okavango Delta peoples of Botswana. American Journal of Human Biology, 14(2), 206–221. https://doi.org/10.1002/ajhb.10040
Bock, J. (2005a). What makes a competent adult forager? In B. S. Hewlett & M. E. Lamb (Eds.), Hunter-gatherer childhoods: Evolutionary, developmental, and cultural perspectives (pp. 109–128). Routledge.
Bock, J. (2005b). Farming, foraging, and children’s play in the Okavango Delta, Botswana. In A. D. Pellegrini & P. K. Smith (Eds.), The nature of play: Great apes and humans (pp. 254–281). Guilford.
Bock, J., & Johnson, S. E. (2004). Subsistence ecology and play among the Okavango Delta peoples of Botswana. Human Nature, 15(1), 63–81. https://doi.org/10.1007/s12110-004-1004-x
Bock, J., & Sellen, D. W. (2002). Childhood and the evolution of the human life course: An introduction. Human Nature, 13(2), 153–159. https://doi.org/10.1007/s12110-002-1006-5
Bogin, B. (1994). Adolescence in evolutionary perspective. Acta Paediatrica, 83(s406), 29–35. https://doi.org/10.1111/j.1651-2227.1994.tb13418.x
Bogin, B. (1997). Evolutionary hypotheses for human childhood. Journal of Physical Anthropology, 140(s25), 63–89. https://doi.org/10.1002/(SICI)1096-8644(1997)25+%3c63::AID-AJPA3%3e3.0.CO;2-8
Bogin, B. (1999a). Patterns of human growth. Cambridge University Press.
Bogin, B. (1999b). Evolutionary perspective on human growth. Annual Review of Anthropology, 28(1), 109–153. https://doi.org/10.1146/annurev.anthro.28.1.109
Bogin, B. (2003). The human pattern of growth and development in paleontological perspective. In J. L. Thompson, G. E. Krovitz, & A. J. Nelson (Eds.), Patterns of growth and development in the genus Homo (pp. 15–44). Cambridge: Cambridge University Press. https://doi.org/10.1017/CBO9780511542565.002
Bogin, B. (2009). Childhood, adolescence, and longevity: A multilevel model of the evolution of reserve capacity in human life history. American Journal of Human Biology, 21(4), 567–577. https://doi.org/10.1002/ajhb.20895
Bogin, B. (2010). Evolution of human growth. In M. P. Muehlenbein (Ed.), Human evolutionary biology (pp. 379–395). Cambridge: Cambridge University Press. https://doi.org/10.1017/CBO9780511781193.028
Bogin, B. (2011). Puberty and adolescence: An evolutionary perspective. In B. Brown Bradford & Mitchell J. Prinstein (Eds.), Encyclopedia of adolescence (Vol. 1, pp. 275–286). Elsevier. https://doi.org/10.1016/B978-0-12-373951-3.00033-8
Bogin, B. (2015). Human growth and development. In M. P. Muehlenbein (Ed.), Basics in human evolution (pp. 285–293). London: Elsevier. https://doi.org/10.1016/B978-0-12-802652-6.00020-7
Bogin, B., & Smith, B. H. (2012). Evolution of the human life cycle. In S. Stinson, B. Bogin, & D. H. O’Rourke (Eds.), Human biology (pp. 513–586). Hoboken, NJ, USA: John Wiley & Sons. https://doi.org/10.1002/9781118108062.ch11
Boyette, A. H. (2013). Social learning during middle childhood among Aka foragers and Ngandu farmers of the Central African Republic. PhD dissertation. Retrieved from http://hdl.handle.net/2376/4768
Boyette, A. H. (2016). Children’s play and culture learning in an egalitarian foraging society. Child Development, 87(3), 759–769. https://doi.org/10.1111/cdev.12496
Brooks, A. G., Gunn, S. M., Withers, R. T., Gore, C. J., & Plummer, J. L. (2005). Predicting walking METs and energy expenditure from speed or accelerometry. Medicine & Science in Sports & Exercise, 37(7), 1216–1223. https://doi.org/10.1249/01.mss.0000170074.19649.0e
Brown, J. K. (1970). A note on the division of labor by sex. American Anthropologist, 72(5), 1073–1078. https://doi.org/10.1525/aa.1970.72.5.02a00070
Bulmer, M. G., & Parker, G. A. (2002). The evolution of anisogamy: A game-theoretic approach. Proceedings of the Royal Society B: Biological Sciences, 269(1507), 2381–2388. https://doi.org/10.1098/rspb.2002.2161
Caldwell, A. E. (2016). Human physical fitness and activity. Cham: Springer International. https://doi.org/10.1007/978-3-319-30409-0
Charnov, E. L. (1993). Life history invariants. Oxford Series in Ecology and Evolution. Oxford Univ.
Codding, B. F., Bliege Bird, R., & Bird, D. W. (2011). Provisioning offspring and others: Risk–energy trade-offs and gender differences in hunter–gatherer foraging strategies. Proceedings of the Royal Society B: Biological Sciences, 278(1717), 2502–2509. https://doi.org/10.1098/rspb.2010.2403
Crittenden, A. N. (2016a). Children’s foraging and play among the Hadza. In C. Meehan & A. N. Crittenden (Eds.), Origins and implications of the evolution of childhood (pp. 155–172). School of Advanced Research (SAR) Series, University of New Mexico Press.
Crittenden, A. N. (2016b). To share or not to share? Social processes of learning to share food among Hadza hunter-gatherer children. In Social learning and innovation in contemporary hunter-gatherers (pp. 61–70). Springer. https://doi.org/10.1007/978-4-431-55997-9_5
Crittenden, A. N., Conklin-Brittain, N. L., Zes, D. A., Schoeninger, M. J., & Marlowe, F. W. (2013). Juvenile foraging among the Hadza: Implications for human life history. Evolution and Human Behavior, 34(4), 299–304. https://doi.org/10.1016/J.EVOLHUMBEHAV.2013.04.004
Cromer, J. A., Schembri, A. J., Harel, B. T., & Maruff, P. (2015). The nature and rate of cognitive maturation from late childhood to adulthood. Frontiers in Psychology, 6, 1–12. https://doi.org/10.3389/fpsyg.2015.00704
de V. Weir, J. B. (1949). New methods for calculating metabolic rate with special reference to protein metabolism. The Journal of Physiology, 109(1–2), 1–9. https://doi.org/10.1113/jphysiol.1949.sp004363
Dean, C., Leakey, M. G., Reid, D., Schrenk, F., Schwartz, G. T., Stringer, C., & Walker, A. (2001). Growth processes in teeth distinguish modern humans from Homo erectus and earlier hominins. Nature, 414(6864), 628–631. https://doi.org/10.1038/414628a
Dunbar, R. I. M. (1998). The social brain hypothesis. Evolutionary Anthropology, 6(5), 178–190. https://doi.org/10.1002/(SICI)1520-6505(1998)6:5%3c178::AID-EVAN5%3e3.0.CO;2-8
FAO/WHO/UNU. (2004). Human energy requirements. Report of a Joint FAO/WHO/UNU Expert Consultation: Rome, 17–24 October 2001. FAO Food and Nutrition Technical Report Series, 103. Available at http://www.fao.org/3/y5686e/y5686e.pdf
FAO/WHO/UNU. (2006). WHO child growth standards: length/height-for-age, weight-for-age, weight-for-length, weight-for-height and body mass index-for-age: methods and development. Available at https://www.who.int/publications/i/item/924154693X
Feldesman, M. R. (1992). Femur/stature ratio and estimates of stature in children. American Journal of Physical Anthropology, 87(4), 447–459. https://doi.org/10.1002/ajpa.1330870406
Froehle, A. W., Nahhas, R. W., Sherwood, R. J., & Duren, D. L. (2013a). Age-related changes in spatio-temporal characteristics of gait accompany ongoing lower limb linear growth in late childhood and early adolescence. Gait and Posture, 38(1), 14–19. https://doi.org/10.1016/j.gaitpost.2012.10.005
Froehle, A. W., Yokley, T. R., & Churchill, S. E. (2013b). Energetics and the origin of modern humans. In F. Smith & J. Ahern (Eds.), The origins of modern humans (2nd ed., pp. 285–320). Hoboken, NJ: John Wiley & Sons. https://doi.org/10.1002/9781118659991.ch8
Froehle, A. W., Wells, G. K., Pollom, T. R., Mabulla, A. Z. P., Lew-Levy, S., & Crittenden, A. N. (2019). Physical activity and time budgets of Hadza forager children: Implications for self-provisioning and the ontogeny of the sexual division of labor. American Journal of Human Biology, 31(1), e23209. https://doi.org/10.1002/ajhb.23209
Gallois, S., & Duda, R. (2016). Beyond productivity: The socio-cultural role of fishing among the Baka of southeastern Cameroon (Au de là productivité: Rôle socioculturel de la pêche chez les Baka du Sud-Est du Cameroun). Revue d’Ethnoécologie. https://doi.org/10.4000/ethnoecologie.2818
Gallois, S., Duda, R., Hewlett, B., & Reyes-García, V. (2015). Children’s daily activities and knowledge acquisition: A case study among the Baka from southeastern Cameroon. Journal of Ethnobiology and Ethnomedicine, 11(1), 86. https://doi.org/10.1186/s13002-015-0072-9
Garfield, Z. H., Garfield, M. J., & Hewlett, B. S. (2016). A cross-cultural analysis of hunter-gatherer social learning. In H. Terashima & B. S. Hewlett (Eds.), Social learning and innovation in contemporary hunter-gatherers (pp. 19–34). Tokyo: Springer. https://doi.org/10.1007/978-4-431-55997-9_2
Gaskins, S. (2000). Children’s daily activities in a Mayan village: A culturally grounded description. Cross-Cultural Research, 34(4), 375–389. https://doi.org/10.1177/106939710003400405
Gaskins, S., & Paradise, R. (2010). Learning through observation in daily life. In D. F. Lancy, J. C. Bock, & S. Gaskins (Eds.), The anthropology of learning in childhood (pp. 85–117). Rowan & Littlefield.
Gluckman, P. D., & Hanson, M. A. (2006a). Evolution, development and timing of puberty. Trends in Endocrinology & Metabolism, 17(1), 7–12. https://doi.org/10.1016/j.tem.2005.11.006
Gluckman, P. D., & Hanson, M. A. (2006b). Changing times: The evolution of puberty. Molecular and Cellular Endocrinology, 254–255, 26–31. https://doi.org/10.1016/j.mce.2006.04.005
Goodman, M. J., Griffin, P. B., Estioko-Griffin, A. A., & Grove, J. S. (1985). The compatibility of hunting and mothering among the Agta hunter-gatherers of the Philippines. Sex Roles, 12(11–12), 1199–1209. https://doi.org/10.1007/BF00287829
Gosso, Y., Otta, E., Leite Ribeiro, F. J., & Bussab, V. S. (2005). Play in hunter-gatherer society. In A. D. Pellegrini & P. K. Smith (Eds.), The nature of play: Great apes and humans (pp. 213–253). Guilford Press.
Gray, P. (2009). Play as a foundation for hunter-gatherer social existence. American Journal of Play, 1(4), 476–522.
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. https://doi.org/10.1086/595620
Gurven, M., & Kaplan, H. (2006). Determinants of time allocation across the lifespan: A theoretical model and an application to the Machiguenga and Piro of Peru. Human Nature, 17(1), 1–49. https://doi.org/10.1007/s12110-006-1019-6
Gurven, M., Kaplan, H., & Gutierrez, M. (2006). How long does it take to become a proficient hunter? Implications for the evolution of extended development and long life span. Journal of Human Evolution, 51(5), 454–470. https://doi.org/10.1016/j.jhevol.2006.05.003
Gurven, M., & Walker, R. (2006). Energetic demand of multiple dependents and the evolution of slow human growth. Proceedings of the Royal Society B: Biological Sciences, 273(1588), 835–841. https://doi.org/10.1098/rspb.2005.3380
Hagino, I. (2015). Ecology of Baka hunter-gatherers’ children in southeast Cameroon. Nutritional status, physical activities, and daily behaviors. Doctoral dissertation, Hokkaido University, Sapporo, Japan. Retrieved from http://hdl.handle.net/2115/60893
Hagino, I., & Yamauchi, T. (2014). Daily physical activity and time-space using of Pygmy hunter-gatherers’ children in southeast Cameroon. In Dynamics of learning in Neanderthals and modern humans (Vol. 2, pp. 91–97). Tokyo: Springer Japan. https://doi.org/10.1007/978-4-431-54553-8_10
Hamilton, W. D. (1963). The evolution of altruistic behavior. The American Naturalist, 97(896), 354–356. https://doi.org/10.1086/497114
Hammer, Ø., Harper, D. A. T., & Ryan, P. D. (2001). PAST: Paleontological Statistics Software Package for education and data analysis. Palaeontologia Electronica, 4(1), 9.
Hawkes, K. (1990). Why do men hunt? Benefits for risky choices. In E. Cashdan (Ed.), Risk and uncertainty in tribal and peasant economies (pp. 145–166). Westview Press.
Hawkes, K., O’Connell, J. F., & Blurton Jones, N. (1995). Hadza children’s foraging: Juvenile dependency, social arrangements, and mobility among hunter-gatherers. Current Anthropology, 36(4), 688–700. https://doi.org/10.1086/204420
Henry, P. I., Morelli, G. A., & Tronick, E. Z. (2005). Child caretakers among Efe foragers of the Ituri forest. In B. S. Hewlett & M. E. Lamb (Eds.), Hunter-gatherer childhoods: Evolutionary, developmental and cultural perspectives (pp. 191–213). Aldine Transaction.
Hewlett, B. S. (2016). Social learning and innovation in hunter-gatherers. In B. S. Hewlett (Ed.), Social learning and innovation in contemporary hunter-gatherers (pp. 1–15). Tokyo: Springer. https://doi.org/10.1007/978-4-431-55997-9_1
Hill, K., & Hurtado, A. M. (2017). Ache life history: The ecology and demography of a foraging people. Routledge.
Hochberg, Z. (2010). Evo-devo of child growth III: Premature juvenility as an evolutionary trade-off. Hormone Research in Paediatrics, 73(6), 430–437. https://doi.org/10.1159/000282109
Hochberg, Z. (2011). Evo-devo of child growth: Treatise on child growth and human evolution. John Wiley & Sons. https://doi.org/10.1002/9781118156155
Humphrey, L. T. (1998). Growth patterns in the modern human skeleton. American Journal of Physical Anthropology, 105(1), 57–72. https://doi.org/10.1002/(SICI)1096-8644(199801)105:1%3c57::AID-AJPA6%3e3.0.CO;2-A
Hurtado, A. M., Hill, K., Hurtado, I., & Kaplan, H. (1992). Trade-offs between female food acquisition and child care among Hiwi and Ache foragers. Human Nature, 3(3), 185–216. https://doi.org/10.1007/BF02692239
Janson, C. H., & van Schaik, C. P. (1993). Ecological risk aversion in juvenile primates: Slow and steady wins the race. In M. E. Pereira & L. A. Fairbanks (Eds.), Juvenile primates: Life history, development, and behavior (pp. 57–74). Oxford University Press.
Kamei, N. (2005). Play among Baka children in Cameroon. In B. S. Hewlett & M. E. Lamb (Eds.), Hunter-gatherer childhoods: Evolutionary, developmental and cultural perspectives (pp. 343–362). Aldine Transaction.
Kaplan, H., & Gangestad, S. W. (2005). Life history theory and evolutionary psychology. In D. M. Buss (Ed.), The handbook of evolutionary psychology (pp. 68–95). Hoboken, NJ: John Wiley & Sons. https://doi.org/10.1002/9780470939376.ch2
Kaplan, H., Hill, K., Cadeliña, R. V., Hayden, B., Hyndman, D. C., Preston, R. J., et al. (1985). Food sharing among Ache foragers: Tests of explanatory hypotheses [and comments and reply]. Current Anthropology, 26(2), 223–246. https://doi.org/10.1086/203251
Kaplan, H., Hill, K., Hurtado, A. M., & Lancaster, J. (2001). The embodied capital theory of human evolution. In P. T. Ellison (Ed.), Reproductive ecology and human evolution (pp. 293–317). Aldine Transaction.
Kaplan, H., Hill, K., Lancaster, J., & Hurtado, A. M. (2000). A theory of human life history evolution: Diet, intelligence, and longevity. Evolutionary Anthropology, 9(4), 156–185. https://doi.org/10.1002/1520-6505(2000)9:4%3c156::AID-EVAN5%3e3.0.CO;2-7
Kaplan, H., & Robson, A. J. (2002). The emergence of humans: The coevolution of intelligence and longevity with intergenerational transfers. Proceedings of the National Academy of Sciences, 99(15), 10221–10226. https://doi.org/10.1073/pnas.152502899
Kaplan, H., Schniter, E., Smith, V. L., & Wilson, B. J. (2018). Experimental tests of the tolerated theft and risk-reduction theories of resource exchange. Nature Human Behaviour, 2(6), 383–388. https://doi.org/10.1038/s41562-018-0356-x
Keith, K. (2006). Childhood learning and the distribution of knowledge in foraging societies. Archeological Papers of the American Anthropological Association, 15(1), 27–40. https://doi.org/10.1525/ap3a.2006.15.27
Kleiber, M. (1947). Body size and metabolic rate. Physiological Reviews, 27(4), 511–541. https://doi.org/10.1152/physrev.1947.27.4.511
Kotler, J., & Haig, D. (2018). The tempo of human childhood: A maternal foot on the accelerator, a paternal foot on the brake. Evolutionary Anthropology, 27(2), 80–91. https://doi.org/10.1002/evan.21579
Kramer, K. L. (1998). Variation in children’s work among modern Maya subsistence agriculturalists (Mexico). PhD dissertation, University of New Mexico.
Kramer, K. L. (2002). Variation in juvenile dependence: Helping behavior among Maya children. Human Nature, 13(2), 299–325. https://doi.org/10.1007/s12110-002-1011-8
Kramer, K. L. (2005). Children’s help and the pace of reproduction: Cooperative breeding in humans. Evolutionary Anthropology, 14(6), 224–237. https://doi.org/10.1002/evan.20082
Kramer, K. L. (2018). The cooperative economy of food: Implications for human life history and physiology. Physiology and Behavior, 193, 196–204. https://doi.org/10.1016/j.physbeh.2018.03.029
Kramer, K. L., & Ellison, P. T. (2010). Pooled energy budgets: Resituating human energy-allocation trade-offs. Evolutionary Anthropology, 19(4), 136–147. https://doi.org/10.1002/evan.20265
Kramer, K. L., & Greaves, R. D. (2011). Juvenile subsistence effort, activity levels, and growth patterns: Middle childhood among Pumé foragers. Human Nature, 22(3), 303–326. https://doi.org/10.1007/s12110-011-9122-8
Kramer, P. A. (1998). The costs of human locomotion: Maternal investment in child transport. American Journal of Physical Anthropology, 107(1), 71–85. https://doi.org/10.1002/(SICI)1096-8644(199809)107:1%3c71::AID-AJPA6%3e3.0.CO;2-G
Kramer, P. A., & Sarton-Miller, I. (2008). The energetics of human walking: Is Froude number (Fr) useful for metabolic comparisons? Gait & Posture, 27(2), 209–215. https://doi.org/10.1016/j.gaitpost.2007.03.009
Kurki, H. K. (2011). Pelvic dimorphism in relation to body size and body size dimorphism in humans. Journal of Human Evolution, 61(6), 631–643. https://doi.org/10.1016/J.JHEVOL.2011.07.006
Lancaster, J. B., & Kaplan, H. (2009). The endocrinology of the human adaptive complex. In P. T. Ellison & P. B. Gray (Eds.), The endocrinology of social relationships (pp. 95–119). Cambridge.
Lancaster, J. B., Kaplan, H., Hill, K., & Hurtado, A. M. (2000). The evolution of life history, intelligence and diet among chimpanzees and human foragers. In F. Tonneau & N. S. Thompson (Eds.), Perspectives in ethology (pp. 47–72). Springer.
Lancy, D. F. (2018). Becoming workers. In D. F. Lancy (Ed.), Anthropological perspectives on children as helpers, workers, artisans, and laborers (pp. 85–129). New York: Palgrave Macmillan. https://doi.org/10.1057/978-1-137-53351-7_4
Lapunzina, P., & Aiello, H. (2002). Manual de antropometría normal y patológica: Fetal, neonatal, niños y adultos. Elsevier España.
Lee, R. B. (1979). The !Kung San: Men, women and work in a foraging society. Cambridge University Press.
Leigh, S. R. (1996). Evolution of human growth spurts. American Journal of Physical Anthropology, 101(4), 455–474. https://doi.org/10.1002/(SICI)1096-8644(199612)101:4%3c455::AID-AJPA2%3e3.0.CO;2-V
Leigh, S. R. (2001). Evolution of human growth. Evolutionary Anthropology, 10(6), 223–236. https://doi.org/10.1002/evan.20002
Lew-Levy, S., Lavi, N., Reckin, R., Cristóbal-Azkarate, J., & Ellis-Davies, K. (2017). How do hunter-gatherer children learn subsistence skills? A Meta-Ethnographic Review. Human Nature, 28(4), 367–394. https://doi.org/10.1007/s12110-017-9302-2
Lew-Levy, S., Lavi, N., Reckin, R., Cristóbal-Azkarate, J., & Ellis-Davies, K. (2018). How do hunter-gatherer children learn social and gender norms? A Meta-Ethnographic Review. Cross-Cultural Research, 52(2), 213–255. https://doi.org/10.1177/1069397117723552
Mace, R. (2000). Evolutionary ecology of human life history. Animal Behaviour, 59(1), 1–10. https://doi.org/10.1006/anbe.1999.1287
Malina, R. M., Bouchard, C., & Bar-Or, O. (2004). Growth, maturation, and physical activity, 2nd ed. Human Kinetics.
Malina, R. M., & Little, B. B. (2008). Physical activity: The present in the context of the past. American Journal of Human Biology, 20(4), 373–391. https://doi.org/10.1002/ajhb.20772
Marlowe, F. (2005). Hunter-gatherers and human evolution. Evolutionary Anthropology, 14(2), 54–67. https://doi.org/10.1002/evan.20046
Marlowe, F. (2010). The Hadza: Hunter-gatherers of Tanzania. University of California Press.
Maté Jiménez, C. (1995). Curso general sobre STATGRAPHICS : Procedimientos, métodos estadísticos, aplicaciones, ejercicios resueltos. Universidad Pontificia Comillas.
Mateos, A., Prado-Nóvoa, O., Vidal-Cordasco, M., Zorrilla-Revilla, G., & Rodríguez, J. (2016). EVOBREATH. A new database for Evolutionary Bioenergetics Research on Paleoanthropology. Poster presented at the 6 Annual Meeting of the European Society for the Study of Human Evolution, Alcalá de Henares, Madrid, Spain.
Moerman, M. (1982). Growth of the birth canal in adolescent girls. American Journal of Obstetrics and Gynecology, 143(5), 528–532. https://doi.org/10.1016/0002-9378(82)90542-7
Montgomery, H. (2010). Learning gender roles. In David F. Lancy, J. C. Bock, & S. Gaskins (Eds.), The anthropology of learning in childhood (pp. 287–305). AltaMira Press.
Nakahashi, W., & Feldman, M. W. (2014). Evolution of division of labor: Emergence of different activities among group members. Journal of Theoretical Biology, 348, 65–79. https://doi.org/10.1016/j.jtbi.2014.01.027
Noss, A. J., & Hewlett, B. S. (2001). The contexts of female hunting in Central Africa. American Anthropologist, 103(4), 1024–1040. https://doi.org/10.1525/aa.2001.103.4.1024
O’Connell, J. F., Hawkes, K., & Blurton Jones, N. (1999). Grandmothering and the evolution of Homo erectus. Journal of Human Evolution, 36(5), 461–485. https://doi.org/10.1006/jhev.1998.0285
Ohtsuka, R. (1989). Hunting activity and aging among the Gidra Papuans: A biobehavioral analysis. American Journal of Physical Anthropology, 80(1), 31–39. https://doi.org/10.1002/ajpa.1330800105
Passmore, R., & Durnin, J. V. G. A. (1955). Human energy expenditure. Physiological Reviews, 35(4), 801–840. https://doi.org/10.1152/physrev.1955.35.4.801
Pontzer, H., Durazo-Arvizu, R., Dugas, L. R., Plange-Rhule, J., Bovet, P., Forrester, T. E., et al. (2016). Constrained total energy expenditure and metabolic adaptation to physical activity in adult humans. Current Biology, 26(3), 410–417. https://doi.org/10.1016/j.cub.2015.12.046
Pontzer, H., Raichlen, D. A., Wood, B. M., Mabulla, A. Z. P., Racette, S. B., & Marlowe, F. (2012). Hunter-gatherer energetics and human obesity. PLoS ONE, 7(7), e40503. https://doi.org/10.1371/journal.pone.0040503
Prado-Nóvoa, O., Rodríguez, J., Vidal-Cordasco, M., Zorrilla-Revilla, G., & Mateos, A. (2020). No sex differences in the economy of load-carriage. American Journal of Human Biology, 32(3), e23352. https://doi.org/10.1002/ajhb.23352
Roche, A. F. (1992). Growth, maturation, and body composition: The Fels Longitudinal Study, 1929–1991. Cambridge University Press.
Rogoff, B., Paradise, R., Arauz, R. M., Correa-Chávez, M., & Angelillo, C. (2003). Firsthand learning through intent participation. Annual Review of Psychology, 54, 175–203. https://doi.org/10.1146/annurev.psych.54.101601.145118
Ruff, C. (2000a). Body size, body shape, and long bone strength in modern humans. Journal of Human Evolution, 38(2), 269–290. https://doi.org/10.1006/jhev.1999.0322
Ruff, C. (2000b). Body mass prediction from skeletal frame size in elite athletes. American Journal of Physical Anthropology, 113(4), 507–517. https://doi.org/10.1002/1096-8644(200012)113:4%3c507::AID-AJPA5%3e3.0.CO;2-F
Ruff, C. (2007). Body size prediction from juvenile skeletal remains. American Journal of Physical Anthropology, 133(1), 698–716. https://doi.org/10.1002/ajpa.20568
Ruff, C., Niskanen, M., Junno, J. A., & Jamison, P. (2005). Body mass prediction from stature and bi-iliac breadth in two high latitude populations, with application to earlier higher latitude humans. Journal of Human Evolution, 48(4), 381–392. https://doi.org/10.1016/j.jhevol.2004.11.009
Salali, G. D., Chaudhary, N., Bouer, J., Thompson, J., Vinicius, L., & Migliano, A. B. (2019). Development of social learning and play in BaYaka hunter-gatherers of Congo. Scientific Reports, 9(1), 11080. https://doi.org/10.1038/s41598-019-47515-8
Schwartz, G. T. (2012). Growth, development, and life history throughout the evolution of Homo. Current Anthropology, 53(S6), S395–S408. https://doi.org/10.1086/667591
Sharma, K., Gupta, P., & Shandilya, S. (2016). Age-related changes in pelvis size among adolescent and adult females with reference to parturition from Naraingarh, Haryana (India). Homo, 67(4), 273–293. https://doi.org/10.1016/J.JCHB.2016.04.002
Smith, S. L., & Buschang, P. H. (2005). Longitudinal models of long bone growth during adolescence. American Journal of Human Biology, 17(6), 731–745. https://doi.org/10.1002/ajhb.20441
Stang, J., & Story, M. (2005). Adolescent growth and development. In J. Stang & M. Story (Eds.), Guidelines for adolescent nutrition services (Vol. 1, pp. 1–7). Center for Leadership, Education and Training in Maternal and Child Nutrition, University of Minnesota.
Steudel-Numbers, K. (1996). Limb morphology, bipedal gait, and the energetics of hominid locomotion. American Journal of Physical Anthropology, 99(2), 345–355. https://doi.org/10.1002/(SICI)1096-8644(199602)99:2%3c345::AID-AJPA9%3e3.0.CO;2-X
Steudel-Numbers, K. (2005). Locomotor energetics and hominid evolution. Evolutionary Anthropology, 3(2), 42–48. https://doi.org/10.1002/evan.1360030205
Steudel-Numbers, K., & Tilkens, M. J. (2004). The effect of lower limb length on the energetic cost of locomotion: Implications for fossil hominins. Journal of Human Evolution, 47(1–2), 95–109. https://doi.org/10.1016/j.jhevol.2004.06.002
Tanner, J. M. (1978). Physical growth from conception to maturity. London: Open Books.
Tardieu, C. (1998). Short adolescence in early hominids: Infantile and adolescent growth of the human femur. American Journal of Physical Anthropology, 107(2), 163–178. https://doi.org/10.1002/(SICI)1096-8644(199810)107:2%3c163::AID-AJPA3%3e3.0.CO;2-W
Torun, B. (2005). Energy requirements of children and adolescents. Public Health Nutrition, 8(7a), 968–993. https://doi.org/10.1079/PHN2005791
Trivers, R. (1971). The evolution of reciprocal altruism. The Quarterly Review of Biology, 46(1), 35–57. https://doi.org/10.1086/406755
Tucker, B., & Young, A. G. (2005). Growing up Mikea. In B. S. Hewlett & M. E. Lamb (Eds.), Hunter-gatherer childhoods: Evolutionary, developmental and cultural perspectives (pp. 147–171). Aldine Transaction.
Urlacher, S. S., Snodgrass, J. J., Dugas, L. R., Sugiyama, L. S., Liebert, M. A., Joyce, C. J., & Pontzer, H. (2019). Constraint and trade-offs regulate energy expenditure during childhood. Science Advances, 5(12), eaax1065. https://doi.org/10.1126/sciadv.aax1065
Verbruggen, S. W., & Nowlan, N. C. (2017). Ontogeny of the human pelvis. The Anatomical Record, 300(4), 643–652. https://doi.org/10.1002/ar.23541
Vidal-Cordasco, M., Mateos, A., Zorrilla-Revilla, G., Prado-Nóvoa, O., & Rodríguez, J. (2017). Energetic cost of walking in fossil hominins. American Journal of Physical Anthropology, 164(3), 609–622. https://doi.org/10.1002/ajpa.23301
Walker, R., Gurven, M., Hill, K., Migliano, A., Chagnon, N., De Souza, R., et al. (2006a). Growth rates and life histories in twenty-two small-scale societies. American Journal of Human Biology, 18(3), 295–311. https://doi.org/10.1002/ajhb.20510
Walker, R., Hill, K., Burger, O., & Hurtado, A. M. (2006b). Life in the slow lane revisited: Ontogenetic separation between Chimpanzees and humans. American Journal of Physical Anthropology, 129(4), 577–583. https://doi.org/10.1002/ajpa.20306
Walker, R., Hill, K., Kaplan, H., & McMillan, G. (2002). Age-dependency in hunting ability among the Ache of eastern Paraguay. Journal of Human Evolution, 42(6), 639–657. https://doi.org/10.1006/jhev.2001.0541
Wall-Scheffler, C. M. (2012). Size and shape: Morphology’s impact on human speed and mobility. Journal of Anthropology, 2012, 1–9. https://doi.org/10.1155/2012/340493
Wall-Scheffler, C. M., Geiger, K., & Steudel, K. (2007). Infant carrying: The role of increased locomotory costs in early tool development. American Journal of Physical Anthropology, 133(2), 841–846. https://doi.org/10.1002/ajpa.20603
Watts, E. S., & Gavan, J. A. (1982). Postnatal growth of nonhuman primates: The problem of the adolescent spurt. Human Biology, 54(1), 53.
White, C. R., & Seymour, R. S. (2003). Mammalian basal metabolic rate is proportional to body mass2/3. Proceedings of the National Academy of Sciences (USA), 100(7), 4046–4049. https://doi.org/10.1073/pnas.0436428100
Zihlman, A., Bolter, D., & Boesch, C. (2007). Skeletal and dental growth and development in chimpanzees of the Taï National Park, Côte d’Ivoire. Journal of Zoology, 273(1), 63–73. https://doi.org/10.1111/j.1469-7998.2007.00301.x
Acknowledgments
The authors are sincerely grateful to all the volunteers who participated in this experimental study, headed by Dr. A. Mateos. The research was performed at the CENIEH LabBioEM, Bioenergy and Motion Analysis Laboratory. Data were obtained from the EVOBREATH database, managed by A. Mateos and J. Rodríguez. We also acknowledge the assistance provided during the experimental tests by Cristina Esteban, and the help by Olalla Prado and Marco Vidal. An anonymous editor from Elsevier’s Language Services improved the English of the original manuscript. We are grateful to June-el Piper for her suggestions to improve the text.
Funding
Guillermo Zorrilla-Revilla benefited from a predoctoral research grant from Junta de Castilla y León EDU/602/2016 funded by Social European Fund, Operative Program of Junta de Castilla y León, through the Consejería de Educación.
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Conceptualization: Ana Mateos (PI), Jesús Rodríguez; Methodology: Ana Mateos, Jesús Rodríguez, Guillermo Zorrilla-Revilla; Investigation: Guillermo Zorrilla-Revilla; Formal Analysis: Guillermo Zorrilla-Revilla; Jesús Rodríguez; Writing-original draft: Guillermo Zorrilla-Revilla; Writing-review and editing: Ana Mateos, Jesús Rodríguez; Supervision: Ana Mateos, Jesús Rodríguez; Resources: Ana Mateos; Submission Project 1586 to the Ethical Committee: Ana Mateos.
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This experimental study has been approved by the Hospital Universitario de Burgos Ethical Committee (Burgos, Spain) (Ref. CEIC 1586), and complies with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Zorrilla-Revilla, G., Rodríguez, J. & Mateos, A. Gathering Is Not Only for Girls. Hum Nat 32, 582–602 (2021). https://doi.org/10.1007/s12110-021-09411-x
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DOI: https://doi.org/10.1007/s12110-021-09411-x