10.5061/DRYAD.S0N20
Mojica, Julius P.
University of Kansas
Lee, Young Wha
Duke University
Willis, John H.
Duke University
Kelly, John K.
University of Kansas
Data from: Spatially and temporally varying selection on intrapopulation
quantitative trait loci for a life history trade-off in Mimulus guttatus
Dryad
dataset
2012
Natural Selection and Contemporary Evolution
Mimulus guttatus
2012-05-03T15:46:46Z
2012-05-03T15:46:46Z
en
https://doi.org/10.1111/j.1365-294X.2012.05662.x
70051 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Why do populations remain genetically variable despite strong continuous
natural selection? Mutation reconstitutes variation eliminated by
selection and genetic drift, but theoretical and experimental studies each
suggest that mutation-selection balance insufficient to explain extant
genetic variation in most complex traits. The alternative hypothesis of
balancing selection, wherein selection maintains genetic variation, is an
aggregate of multiple mechanisms (spatial and temporal heterogeneity in
selection, frequency-dependent selection, antagonistic pleiotropy, etc.).
Most of these mechanisms have been demonstrated for Mendelian traits, but
there is little comparable data for loci affecting quantitative
characters. Here, we report a three-year field study of selection on
intra-population Quantitative Trait Loci (QTL) of flower size, a highly
polygenic trait of Mimulus guttatus. The QTL exhibit antagonistic
pleiotropy: alleles that increase flower size reduce viability but
increase fecundity. The magnitude and direction of selection fluctuates
yearly and on a spatial scale of meters. This study provides direct
evidence of balancing selection mechanisms on QTL of an ecologically
relevant trait.
Phenotype and Fitness dataThis file provides the raw phenotype and fitness
(survivorship and fecundity) data for each of the transplanted Nearly
Isogenic Lines as described in Mojica et al 2012.Dryad Phenotype and
Fitness data_Mojica et al.csv