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Evolution of pistil length as a choice mechanism for pollen quality

Lankinen, Åsa LU and Skogsmyr, Io LU (2001) In Oikos 92(1). p.81-90
Abstract
During the fertilisation process in plants, pollen tube growth rate may be selected as a trait important in male to male competition. Since female morphology provides the necessary selective arena for such competition. we investigate if sexual selection theory can be used to explain the evolution of pistil length as a female choice mechanism. This choice is performed by direct interference with male to male competition. Furthermore, the sessile nature of plants limits the number of mates a female can choose between, which could limit the benefit a female can gain from distinguishing between donors. To mirror these circumstances, we model a situation when there are only two competitors at a time. Using a game theoretical approach we show... (More)
During the fertilisation process in plants, pollen tube growth rate may be selected as a trait important in male to male competition. Since female morphology provides the necessary selective arena for such competition. we investigate if sexual selection theory can be used to explain the evolution of pistil length as a female choice mechanism. This choice is performed by direct interference with male to male competition. Furthermore, the sessile nature of plants limits the number of mates a female can choose between, which could limit the benefit a female can gain from distinguishing between donors. To mirror these circumstances, we model a situation when there are only two competitors at a time. Using a game theoretical approach we show that if pollen tube growth rate can be used as an indication of heritable quality, pistil length can be selected in response to variation of this trait. We further find that length of the pistil affects selection of pollen tube growth rate. Thus female preference and male competitive ability co-evolve, but this does not necessarily lead to a positive relationship between the two. Under certain circumstances we find a negative relation instead. Given realistic differences in male quality, the model indicates that there is a potential for evolution of female morphology as a choice mechanism for pollen quality. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Oikos
volume
92
issue
1
pages
81 - 90
publisher
Wiley-Blackwell
external identifiers
  • scopus:0035137437
ISSN
1600-0706
DOI
10.1034/j.1600-0706.2001.920110.x
language
English
LU publication?
yes
id
721bdbd0-5c80-4d00-9833-a3c3afb95eac (old id 147663)
date added to LUP
2007-07-03 13:32:03
date last changed
2018-01-07 05:39:34
@article{721bdbd0-5c80-4d00-9833-a3c3afb95eac,
  abstract     = {During the fertilisation process in plants, pollen tube growth rate may be selected as a trait important in male to male competition. Since female morphology provides the necessary selective arena for such competition. we investigate if sexual selection theory can be used to explain the evolution of pistil length as a female choice mechanism. This choice is performed by direct interference with male to male competition. Furthermore, the sessile nature of plants limits the number of mates a female can choose between, which could limit the benefit a female can gain from distinguishing between donors. To mirror these circumstances, we model a situation when there are only two competitors at a time. Using a game theoretical approach we show that if pollen tube growth rate can be used as an indication of heritable quality, pistil length can be selected in response to variation of this trait. We further find that length of the pistil affects selection of pollen tube growth rate. Thus female preference and male competitive ability co-evolve, but this does not necessarily lead to a positive relationship between the two. Under certain circumstances we find a negative relation instead. Given realistic differences in male quality, the model indicates that there is a potential for evolution of female morphology as a choice mechanism for pollen quality.},
  author       = {Lankinen, Åsa and Skogsmyr, Io},
  issn         = {1600-0706},
  language     = {eng},
  number       = {1},
  pages        = {81--90},
  publisher    = {Wiley-Blackwell},
  series       = {Oikos},
  title        = {Evolution of pistil length as a choice mechanism for pollen quality},
  url          = {http://dx.doi.org/10.1034/j.1600-0706.2001.920110.x},
  volume       = {92},
  year         = {2001},
}