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Population differentiation in G matrix structure due to natural selection in Rana temporaria
- Source :
- University of Helsinki
-
Abstract
- The additive genetic variance-covariance matrix (G) is a concept central to discussions about evolutionary change over time in a suite of traits. However, at the moment we do not know how fast G itself changes as a consequence of selection or how sensitive it is to environmental influences. We investigated possible evolutionary divergence and environmental influences on G using data from a factorial common-garden experiment where common frog (Rana temporaria) tadpoles from two divergent populations were exposed to three different environmental treatments. G-matrices were estimated using an animal model approach applied to data from a NCII breeding design. Matrix comparisons using both Flury and multivariate analysis of variance methods revealed significant differences in G matrices both between populations and between treatments within populations, the former being generally larger than the latter. Comparison of levels of population differentiation in trait means using Q(ST) indices with that observed in microsatellite markers (F(ST)) revealed that the former values generally exceeded the neutral expectation set by F(ST). Hence, the results suggest that intraspecific divergence in G matrix structure has occurred mainly due to natural selection.
- Subjects :
- 0106 biological sciences
Population
Rana temporaria
Quantitative trait locus
Biology
Environment
010603 evolutionary biology
01 natural sciences
Intraspecific competition
Divergence
03 medical and health sciences
Genetic drift
Gene Frequency
Genetics
Animals
Body Weights and Measures
Selection, Genetic
education
Ecology, Evolution, Behavior and Systematics
Selection (genetic algorithm)
030304 developmental biology
Sweden
0303 health sciences
Phenotypic plasticity
education.field_of_study
Analysis of Variance
Natural selection
Bayes Theorem
Genetics, Population
Phenotype
Evolutionary biology
Larva
Multivariate Analysis
General Agricultural and Biological Sciences
Microsatellite Repeats
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- University of Helsinki
- Accession number :
- edsair.doi.dedup.....f432f027c687b924ce735625e4ad7c32