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Human Evolution

, Volume 4, Issue 1, pp 33–44 | Cite as

Early hominid physical evolution

  • Lia Queiroz do Amaral
Article

Abstract

Hindrances against bipedalism evolution are localized in obstetrical constraints, maternal mortality rates, infant birth trauma and unsafe pregnancy. Analysis of infant survival probability shows that a shift to bipedalism could occur as a necessary consequence of the process of body fur reduction, in a balance between such hindrances and safe infant transportation. Fur reduction is proposed to correlate with cooling mechanism in intra-species physical fights. The triggering of a feed-back mechanism connecting reduction of body fur to canine reduction would be responsible for a passage from threat displays to actual physical fights. The proposed scenario for such changes is the transition from uni-male to multi-male social structures among Hominoidea. The implications of the approach adopted are discussed.

Key words

bipedalism reproduction loss of fur infant carrying canine reduction 

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References

  1. Auroux M. &Haegel P. 1970.Embriologia. Cuadernos Practicos n. 3. Barcelona, Toray-Masson.Google Scholar
  2. Baba M.L., Darga L.L. &Goodman M., 1982,Recent advances in molecular evolution of the primates. In (A.B. Chiarelli and R.S. Carruccini, Eds.). Advanced Views in Primate Biology. pp 6–27, Berlin, Springer-Verlag.Google Scholar
  3. de Beer Sir G., 1962.Embryos and Ancestors. Oxford, Claredon Press (Fourth Edition).Google Scholar
  4. Berge C., Orban-Segebarth R. &Schmid P. (1984).Obstetrical interpretation of the Australopithecine Pelvic Cavity. Journal of Human Evolution, 13: 573–587.CrossRefGoogle Scholar
  5. Bernstein I.S. &Gordon T.P., 1977.The release of primate aggression. In (Geoffry H. Bourne, Ed.). Progress in Ape Research. Pp 243–250. New York, Academic Press.Google Scholar
  6. Campbell B., 1972a.Man for all seasons. In(Campbell, 1972b).Google Scholar
  7. Campbell B. (Editor), 1972b.Sexual Selection and the Descent of Man 1871–1971. London, Heinemann.Google Scholar
  8. Chalmers N.R., 1973.Differences in behavior between some arboreal and terrestrial species of african monkeys. In(Michael & Crook, 1973).. Pp. 69–100.Google Scholar
  9. Cheney D., Seyfarth R. &Smuts B., 1986Social Relationships and Social Cognition in Nonhuman Primates. Science, 234: 1361–1366.Google Scholar
  10. Clutton-Brock T.H., 1974.Primate Social Organization and Ecology. Nature, 250: 539–542.CrossRefGoogle Scholar
  11. Crook J.H. &Gartlan J.S., 1966.Evolution of primate societies. Nature, 210: 1200–1203.CrossRefGoogle Scholar
  12. Crook J.H., 1972.Sexual selection, dimorphism and social organization in the primates. In (B. Campbell, Ed.). Sexual selection and the descent of man 1871–1971, pp. 231–281. London, Heinemann.Google Scholar
  13. Darwin C. 1871.The descent of man and selection in relation to sex. London, Murray.Google Scholar
  14. Dobbie B.M., 1982.An attempt to estimate the true rate of maternal mortality in sixteenth to eighteenth centuries. Medical History, 26; 79–90.Google Scholar
  15. Ebling J., 1985.The mythological evolution of nudity. Journal of Human Evolution, 14: 33–41.CrossRefGoogle Scholar
  16. Eisenberg J.F., Muckenhirn N.A. &Rudran R., 1972.The relation between ecology and social structure in primates. Science, 176: 863–874.Google Scholar
  17. Fisher R.A., 1930.The Genetical Theory of Natural Selection. Oxford, Clarendon.Google Scholar
  18. Fossey D., 1983.Gorillas in the Mist. Boston, Houghton Miffin Co.Google Scholar
  19. Fox R. 1972.Alliance and constraint: sexual selection and the evolution of human kinship systems. In (Campbell B. (Editor), 1972.Sexual Selection and the Descent of Man 1871–1971. London, Heinemann., pp. 282–331.Google Scholar
  20. Goodall J. Van Lawick, 1967.Mother-offspring relationship in free-ranging chimpanzees. In: (O. Morris, Ed.). Primate Ethology, pp. 287–346. Chicago, Aldine.Google Scholar
  21. Gould S.J., 1977.Ontogeny and Phylogeny. London, Belknap Press of Harvard University Press.Google Scholar
  22. Gould S.J. &Lewontin R.C., 1979.The spandrels of San Marco and the Panglossian paradigm: a critique of the adaptationist programme. Proc. R. Soc. Lond. B, 205: 581–598.CrossRefGoogle Scholar
  23. Graham C.E. (Editor), (1981).Reproductive biology of the great apes: comparative and biomedical perspectives. New York, Academic Press.Google Scholar
  24. Gutierrez H. &Houdaille J., 1983.La Mortalité Martenelle en France au XVIIIesiecle. Population, 6: 975–994.CrossRefGoogle Scholar
  25. Harcourt A.H., 1981.Intermale competition and the reproductive behavior of the great apes. In:(Graham, 1981),, pp. 301–318.Google Scholar
  26. Hutchinson, G.E., 1963.Natural selection, social organization, hairlessness, and the Australopithecine canine. Evolution, 17: 588–589.CrossRefGoogle Scholar
  27. Johanson D.C. &White T.D., 1979.A systematic assessment of early African hominids. Science, 203: 321–330.Google Scholar
  28. King M.C. &Wilson A.C., 1975.Evolution at two levels in humans and chimpanzees. Science, 188: 107–116.Google Scholar
  29. Kummer H., 1971.Primate Societies: group techniques of ecological adaptations. Chicago, Aldine Atherton.Google Scholar
  30. Lande R., 1981.Models of speciation by sexual selection on polygenic traits. Proc. Nat. Academy of Sciences USA, 78: 3721–3725.CrossRefGoogle Scholar
  31. Langdon J. 1985.Fossils and the origin of bipedalism. Journal of Human Evolution, 14: 615–635.CrossRefGoogle Scholar
  32. Leutenegger W., 1978.Scaling of sexual dimorphism in body size and breeding system in primates. Nature, 272: 610–611.CrossRefGoogle Scholar
  33. Lovejoy C.O. 1981.The origin of man. Science, 211: 341–350. Discussions on this paper in Science, 217: 295 (1982).Google Scholar
  34. MacGrew W.C. (Editor), 1982.Meeting on tool use by non-human primates. Journal of Human Evolution, 11: 1–104.Google Scholar
  35. MacKinnon J.R., 1974.Behavior and ecology of wild orangutan. Animal Behavior, 22: 3–74.CrossRefGoogle Scholar
  36. Michael R.P. &Crook J.H. (Editors) 1973.Comparative Ecology and Behavior of Primates. New York, Academic Press.Google Scholar
  37. Montagna W., 1982.The evolution of human skin. In: (A.B. Chiarelli and R.S. Corruccini, Eds.). Advanced Views in Primate Biology. Pp. 35–41. Berlin, Springer-Verlag.Google Scholar
  38. Montagna W., 1985.The evolution of human skin (?). Journal of Human Evolution, 14: 3–22. Preface pp. 1–2.CrossRefGoogle Scholar
  39. Morin E. &Piatelli-Palmarini M. (Editors), 1974.L'Unité de l'Homme. Invariants Biologiques et Universaux Culturels. Paris, Seuil.Google Scholar
  40. Naftolin F., 1981.Understanding the Basis of Sex Differences. Science, 211: 1263–1264 (following papers on same subject up to p. 1324).Google Scholar
  41. Parker S.T. & Gibson K.R., 1982.The importance of theory for reconstructing the evolution of language and intelligence in Hominids. In: (A.B. Chiarelli and R.S. Corruccini, Eds.). Advanced Views in Primate Biology. Pp. 42–64.Google Scholar
  42. Preuschoft T., Chivers D.J., Brockelman W.K. & Creel N. (Editors), 1984.The lesser apes: Evolutionary and Behavioral Biology. Edinburgh University Press.Google Scholar
  43. Robertshaw D. &Finch V.A., 1984.Heat Loss and Gain in Artificial and Natural Environments. In: (J.R.S. Hales, Ed.). Thermal Physiology. Pp. 243–250, New York, Raven Press.Google Scholar
  44. Robertshaw D., 1985.Sweat and heat exchange in man and other mammals. Journal of Human Evolution, 14: 63–73.CrossRefGoogle Scholar
  45. Robinson J.T., 1972.Early Hominid Posture and Locomotion. Chicago, The University of Chicago Press.Google Scholar
  46. Rodman P.S. &McHenry H.M., 1980.Bioenergetics and the Origin of Hominid Bipedalism. American Journal of Physical Anthropology, 52: 103–106.CrossRefGoogle Scholar
  47. Schultz A.H., 1968.The recent hominoid primates. In: (S.L. Washburn and P.C. Jay, Eds.). Perspectives on Human Evolution — 1. Pp. 122–195. New York, Holt, Rinehart and Winston.Google Scholar
  48. Short R.V., 1979.Sexual selection and its component parts, somatic and genital selection, as illustrated by man and the great apes. Ad. in the study of behavior, 9: 131–158.CrossRefGoogle Scholar
  49. Short R.V., 1981.Sexual selection in man and the great apes. In:(Graham, 1981). Pp. 319–341.Google Scholar
  50. Sibley C.G. &Ahlquist J.E., 1984.The phylogeny of the hominid primates, as indicated by DNA-DNA hybridization. Journal of Molecular Evolution, 20: 2–15.CrossRefGoogle Scholar
  51. Struhsaker T.T., 1969.Correlates of ecology and social organization among african cercopithecines. Folia Primatol., 11: 80–118.CrossRefGoogle Scholar
  52. Struhsaker T.T. &Leland L., 1979.Socio-ecology of 5 sympatric monkey species in the Kibale forest. Uganda. Adv. in the Study of Behavior, 9: 159–228.CrossRefGoogle Scholar
  53. Taylor C.R. &Rowntree V.J., 1973.Running on two or on four legs: which consumes more energy? Science, 179: 186–187.Google Scholar
  54. Vilensky J.A., Van Hoesen G.W. &Damasio A.R., 1982.The limbic system and human evolution. Journal of Human Evolution, 11: 447–460.CrossRefGoogle Scholar
  55. Wheeler P.E., 1984.The evolution of bipedality and loss of functional body hair in hominids. Journal of Human Evolution, 13: 91–98.Google Scholar
  56. Wheeler P.E., 1985The loss of functional body hair in man: the influence of thermal environment, body form and bipedality. Journal of Human Evolution, 14: 23–28.CrossRefGoogle Scholar
  57. WHO, 1986a.Maternal Mortality Rates. A tabulation of available information. Geneva, World Health Organization. FHE/86.3Google Scholar
  58. WHO, 1986b.Maternal care for the reduction of perinatal and neonatal mortality. Geneva, World Health Organization.Google Scholar
  59. Wilson, J.D., Griffin J.E., George F.W. &Leshin M., 1981.The role of gonadol steroids in sexual differentiation. Recent Progress in Hormone Research, 37: 1–39.Google Scholar
  60. Wilson P.J., 1975.The promising primate. MAN (New Series), 10: 5–20.Google Scholar

Copyright information

© Editrice Il Sedicesimo 1989

Authors and Affiliations

  • Lia Queiroz do Amaral
    • 1
  1. 1.Instituto de FisicaUniversidade de São PauloSão PauloBrasil

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