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The effective size of bryophyte populations.

Bengtsson, Bengt Olle LU and Cronberg, Nils LU (2009) In Journal of Theoretical Biology 258(Available online 8 January 2009). p.121-126
Abstract
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Breeding system Intragametophytic selfing Asexuality Coalescence
in
Journal of Theoretical Biology
volume
258
issue
Available online 8 January 2009
pages
121 - 126
publisher
Academic Press
external identifiers
  • wos:000265312800013
  • scopus:63549111756
ISSN
1095-8541
DOI
10.1016/j.jtbi.2009.01.002
language
English
LU publication?
yes
id
1c25fda6-92d9-4b3e-8068-08236a30c7b2 (old id 1289242)
date added to LUP
2009-02-16 13:24:24
date last changed
2017-06-11 04:08:29
@article{1c25fda6-92d9-4b3e-8068-08236a30c7b2,
  abstract     = {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.},
  author       = {Bengtsson, Bengt Olle and Cronberg, Nils},
  issn         = {1095-8541},
  keyword      = {Breeding system
Intragametophytic selfing
Asexuality
Coalescence},
  language     = {eng},
  number       = {Available online 8 January 2009},
  pages        = {121--126},
  publisher    = {Academic Press},
  series       = {Journal of Theoretical Biology},
  title        = {The effective size of bryophyte populations.},
  url          = {http://dx.doi.org/10.1016/j.jtbi.2009.01.002},
  volume       = {258},
  year         = {2009},
}