Extraordinary Population Structure among the Baining of New Britain

Jason A Wilder, Michael F. Hammer

Research output: Chapter in Book/Report/Conference proceedingChapter

4 Citations (Scopus)

Abstract

This chapter examines with four unlinked loci the extent of divergence between two linguistically related Baining groups in New Britain. Although they are linguistically related and are less than 100 km apart, they are, by a number of measures, surprisingly different genetically. This difference is explained in terms of male and female demographic distinctions. Early comparisons in global and regional mtDNA and NRY diversity indicate comparatively greater overall mtDNA variability, but greater among-group NRY variation. The chapter suggests that the key factor is the larger effective population size of women (since relatively few men contribute to following generations). This distinction could cause an acceleration in the effects of genetic drift, leading to less overall variation, but proportionately more among-group variation. In the Baining study, evidence is found for a much smaller male effective population size. However, the proportion of males who migrate and successfully reproduce appears to be greater than for females. In considering the surprising degree of overall differentiation between these two Baining groups, the effects of drift are paramount, but there remains the question of whether the differences may be due to the residue of ancient lineage sorting.

Original languageEnglish (US)
Title of host publicationPopulation Genetics, Linguistics, and Culture History in the Southwest Pacific
PublisherOxford University Press
ISBN (Print)9780199790142, 9780195300307
DOIs
StatePublished - Sep 1 2007
Externally publishedYes

Fingerprint

United Kingdom
population structure
Population Density
Mitochondrial DNA
mitochondrial DNA
population size
Population
Genetic Drift
group effect
genetic drift
sorting
demographic statistics
Demography
loci

Keywords

  • Baining
  • Demography
  • Effective population size
  • Genetic drift
  • Lineage sorting
  • Migration rates
  • Mitochondrial DNA
  • Y chromosome

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Cite this

Wilder, J. A., & Hammer, M. F. (2007). Extraordinary Population Structure among the Baining of New Britain. In Population Genetics, Linguistics, and Culture History in the Southwest Pacific Oxford University Press. https://doi.org/10.1093/acprof:oso/9780195300307.003.0013

Extraordinary Population Structure among the Baining of New Britain. / Wilder, Jason A; Hammer, Michael F.

Population Genetics, Linguistics, and Culture History in the Southwest Pacific. Oxford University Press, 2007.

Research output: Chapter in Book/Report/Conference proceedingChapter

Wilder, JA & Hammer, MF 2007, Extraordinary Population Structure among the Baining of New Britain. in Population Genetics, Linguistics, and Culture History in the Southwest Pacific. Oxford University Press. https://doi.org/10.1093/acprof:oso/9780195300307.003.0013
Wilder JA, Hammer MF. Extraordinary Population Structure among the Baining of New Britain. In Population Genetics, Linguistics, and Culture History in the Southwest Pacific. Oxford University Press. 2007 https://doi.org/10.1093/acprof:oso/9780195300307.003.0013
Wilder, Jason A ; Hammer, Michael F. / Extraordinary Population Structure among the Baining of New Britain. Population Genetics, Linguistics, and Culture History in the Southwest Pacific. Oxford University Press, 2007.
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