Conservation Genetics pp 147-164

Part of the EXS book series (EXS, volume 68)

Genetic structure of a population with social structure and migration

  • G. de Jong
  • J. R. de Ruiter
  • R. Haring

Summary

Long-tailed macaques (Macaca fascicularis) live in social groups consisting of resident adult females and their offspring, and immigrant males. Subadult males leave their birth group, and might establish themselves as reproducing males in another group. Females do not leave their birth group. Such a social pattern might have consequences for the genetic differentiation between groups and the genetic relationships within groups.

In a field study of long-tailed macaques (Macaca fascicularis) in Ketambe, Sumatra, Indonesia, blood samples were taken from individuals in seven adjacent social groups. Electrophoretic analysis showed 17 blood proteins and enzymes to be polymorphic, allowing the computation of heterozygosities and of the F-statistics. Of the F-statistics, FIS indicates the deviation from Hardy-Weinberg equilibrium averaged over local populations, FST indicates the differentiation in allele frequency between local populations, and FIT indicates the deviation from Hardy-Weinberg equilibrium over the total population.

In a computer simulation of the population of long-tailed macaques using many loci with many neutral alleles, FIS and FST values proved to be characteristic for a certain demography and life history of the population, and proved not to depend upon the number of alleles or level of heterozygosity. FST values found in the simulation were compatible to those found in the field; in the simulation, values for FIS and FIT were consistently negative.

The explanation for the negative FIS appears to be that genetic drift causes differentiation in allele frequencies between groups, and that due to this differentiation, allele frequencies differ between resident females and immigrant males, leading to offspring with an excess of heterozygotes (negative FIS) relative to the expectation based upon the overall allele frequency.

The excess of heterozygotes might imply that slightly deleterious alleles are protected from selection. A population with a social structure and differential migration of the sexes is liable to accumulate deleterious recessives and, as a consequence, to be very sensitive to inbreeding on disruption of the social structure, as for instance in zoos.

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References

  1. Aoki, K. and Nozawa, K. (1984) Average coefficient of relationship within troops of the Japanese monkey and other primate species with reference to the possibility of group selection. Primates 25: 171–184.CrossRefGoogle Scholar
  2. Chesser, R. K. (1991a) Gene diversity and female philopatry. Genetics 127: 437–447.PubMedGoogle Scholar
  3. Chesser, R. K. (1991b) Influence of gene flow and breeding tactics on gene diversity within population. Genetics 129: 573–583.PubMedGoogle Scholar
  4. Harvey, P. H. and Ralls, K. (1986) Do animals avoid incest? Nature 320: 575–576.CrossRefGoogle Scholar
  5. Kawamoto, Y. and Ischak, T. M. (1984) Genetic variations within and between groups of crab-eating macaques (Macaca fascicularis) on Sumatra, Java, Bali, Lombok and Subawa, Indonesia. Primates 25: 131–159.CrossRefGoogle Scholar
  6. Lacy, R. C. (1987) Loss of genetic diversity from managed populations: interacting effects of drift, mutation, immigration, selection, and population subdivision. Cons. Biol. 1: 143–158.CrossRefGoogle Scholar
  7. Nei, M. (1977) F-statistics and analysis of gene diversity in subdivided populations. Ann. Hum. Genet. 41: 225–233.PubMedCrossRefGoogle Scholar
  8. Nei, M. and Chesser, R. K. (1983) Estimation of fixation indices and gene diversities. Ann. Hum. Genet. 47: 253–259.PubMedCrossRefGoogle Scholar
  9. Noordwijk, M. A. van and van Schaik, C. P. (1988) Male careers in Sumatran long-tailed macaques. Behaviour 107: 24–43.CrossRefGoogle Scholar
  10. Nozawa, K., Shotake, T., Kawamoto, Y. and Tanabe, Y. (1982) Population genetics of Japanese monkeys: II. Blood protein polymorphisms and population structure. Primates 23: 252–271.CrossRefGoogle Scholar
  11. Pamilo, P. (1989) Estimating relatedness in social groups. Trends Ecol. Evol. 4: 353–355.PubMedCrossRefGoogle Scholar
  12. Pope, T. R. (1992) The influence of dispersal patterns and mating system on genetic differentiation within and between populations of the red Howler Monkey (Alouatta seniculus). Evolution 46: 1112–1128.CrossRefGoogle Scholar
  13. Prout, T. (1981) A note on the island model with sex dependent migraiton. Theor. Appl. Genet. 59: 327–332.CrossRefGoogle Scholar
  14. Pusey, A. E. and Packer, C. (1987) Dispersal and philopatry. In: Smuts, B. B., Cheney, D. L., Seyfarth, R. M. Wrangham, R. W. and Struhsaker T. T. (eds), Primate societies ,University of Chicago Press, Chicago, pp. 250–265.Google Scholar
  15. Ruiter, J. R. de (1992) Capturing wild long-tailed Macaques (Macaca fascicularis). Folia Primatol. 59: 89–104.PubMedCrossRefGoogle Scholar
  16. Ruiter, J. R. de, Scheffrahn, W., Trommelen, G. J. J. M., Uitterlinden, A. G., Martin R. D. and van Hooff, J. A. R. A. M. (1992) Male social rank and reproductive success in wild long-tailed macaques: paternity exclusions by blood protein analysis and DNA fingerprinting. In: Martin, R. D., Dixson, A. F. and Wickings E. F. (eds), Paternity in primates: Genetic tests and theories. Karger, Basel, pp. 175–191.Google Scholar
  17. Scheffrahn, W. and de Ruiter, J. R. (1994) Genetic relatedness between populations of Macaca fascicularis on Sumatra. In: Fa, J. E. and Lindburg, D. G. (eds), Evolution and ecology of Macaque societies. Cambridge University Press, Cambridge (in press).Google Scholar
  18. Scheffrahn, W., Socha, W. W., de Ruiter, J. R. and van Hooff, J. A. R. A. M. (1987) Blood genetic markers in Sumatran Macaca fascicularis populations. Genetica 73: 179–180.Google Scholar
  19. Weir, B. S. and Cockerham, C. C. (1984) Estimating F-statistics for the analysis of population structure. Evolution 38: 1358–1370.CrossRefGoogle Scholar

Copyright information

© Springer Basel AG 1994

Authors and Affiliations

  • G. de Jong
    • 1
  • J. R. de Ruiter
    • 2
  • R. Haring
    • 1
    • 2
  1. 1.Population Genetics GroupUniversity of UtrechtUtrechtThe Netherlands
  2. 2.Ethology and Socio-ecology GroupUniversity of UtrechtUtrechtThe Netherlands

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