TY - JOUR
T1 - Genetics and adaptation in structured populations
T2 - Sex ratio evolution in Silene vulgaris
AU - Olson, Matthew S.
AU - McCauley, David E.
AU - Taylor, Douglas
N1 - Funding Information:
The authors would like to thank Rodney Mauricio and three additional reviewers for their helpful comments. Logistical support was provided through Mountain Lake Biological Station and financial support was provided through the Institute of Arctic Biology at the University of Alaska, NSF Alaska EPSCoR, a National Science Foundation/Alfred P. Sloan Postdoctoral Fellowship in Molecular Evolution (DBI-9750033), and a grant from the National Science Foundation (DEB-0078531).
PY - 2005/2
Y1 - 2005/2
N2 - Theoretical models suggest that population structure can interact with frequency dependent selection to affect fitness in such a way that adaptation is dependent not only on the genotype of an individual and the genotypes with which it co-occurs within populations (demes), but also the distribution of genotypes among populations. A canonical example is the evolution of altruistic behavior, where the costs and benefits of cooperation depend on the local frequency of other altruists, and can vary from one population to another. Here we review research on sex ratio evolution that we have conducted over the past several years on the gynodioecious herb Silene vulgaris in which we combine studies of negative frequency dependent fitness on female phenotypes with studies of the population structure of cytoplasmic genes affecting sex expression. This is presented as a contrast to a hypothetical example of selection on similar genotypes and phenotypes, but in the absence of population structure. Sex ratio evolution in Silene vulgaris provides one of the clearest examples of how selection occurs at multiple levels and how population structure, per se, can influence adaptive evolution.
AB - Theoretical models suggest that population structure can interact with frequency dependent selection to affect fitness in such a way that adaptation is dependent not only on the genotype of an individual and the genotypes with which it co-occurs within populations (demes), but also the distribution of genotypes among populations. A canonical example is the evolution of altruistic behavior, where the costs and benefits of cooperation depend on the local frequency of other altruists, and can vary from one population to another. Here we review research on sex ratio evolution that we have conducted over the past several years on the gynodioecious herb Silene vulgaris in which we combine studies of negative frequency dependent fitness on female phenotypes with studies of the population structure of cytoplasmic genes affecting sex expression. This is presented as a contrast to a hypothetical example of selection on similar genotypes and phenotypes, but in the absence of population structure. Sex ratio evolution in Silene vulgaris provides one of the clearest examples of how selection occurs at multiple levels and how population structure, per se, can influence adaptive evolution.
KW - Cytoplasmic male sterility
KW - Gynodioecy
KW - Mitochondrial DNA
KW - Subjective fitness
UR - http://www.scopus.com/inward/record.url?scp=16344383128&partnerID=8YFLogxK
U2 - 10.1007/s10709-003-2709-1
DO - 10.1007/s10709-003-2709-1
M3 - Article
C2 - 15881680
AN - SCOPUS:16344383128
VL - 123
SP - 49
EP - 62
JO - Genetica
JF - Genetica
SN - 0016-6707
IS - 1-2
ER -