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The effective size of bryophyte populations.

In English

Författare

Summary, in English

Bryophytes with their dominant haploid stage conform poorly to the life cycles generally treated in population genetical models. Here we make a detailed analysis of what effective sizes bryophyte model populations have as a function of their breeding system. It is found that the effective size is rarely much smaller than the scored number of haploid gametophytic individuals, even when the limited number of diploids (sporophytes) formed is taken into account. The most severe decrease in effective size occurs when unisexual gametophytic females produce only a small number of fertile diploid sporophytes in male biased populations; this effect is due to the restricted sampling of male gametophytic individuals that then occurs. It is shown that the harmonic mean of diploid sporophytes formed per haploid gametophytic individuals is the relevant measure in these calculations and not the standard (and generally larger) arithmetic mean.

Avdelning/ar

Publiceringsår

2009

Språk

Engelska

Sidor

121-126

Publikation/Tidskrift/Serie

Journal of Theoretical Biology

Volym

258

Issue

Available online 8 January 2009

Dokumenttyp

Artikel i tidskrift

Förlag

Academic Press

Ämne

  • Ecology
  • Biological Sciences

Nyckelord

  • Breeding system Intragametophytic selfing Asexuality Coalescence

Status

Published

Forskningsgrupp

  • Evolutionary Genetics

ISBN/ISSN/Övrigt

  • ISSN: 1095-8541