(Epi) and Genetic Similarity Reference Genetic Structure
Reference Spatial Structure
Low
High
High
Low
Locally Induced
(Epi) and Genetic Similarity Reference Genetic Structure
Reference Spatial Structure
Low
High
High
Long-Term Stable Inheritance
Low
Locally Induced
(Epi) and Genetic Similarity
Reference Spatial Structure
Reference Genetic Structure
High
Low
Low
High
Some Inheritance
Long-Term Stable Inheritance
Other
Locally Induced
So I said to myself, “Self, are all methylation ‘markers’ induced or do some persist along evolutionarily relevant timescales?
Araptus attenuatus 40 Populations Baja California & Sonora
500 bp mtDNA COI
8-12% Sequence Divergence 2 Groups in Baja California & Sonora
Nested Structure Nested Structure
Frequency Gradients
MPS
Frequency Gradients
MPS
msAFLP Genome Scans
•
•
Individuals from single clade, controlling for taxonomy & historical demography Paired ‘homologous’ sequence-based & methylation-based markers 702 paired SEQ/METH markers
Band
HpaII
•
MspI No Band
Band
…CCGG… …CCGG… …GGCC… …GGCC…
No Band
…CCGG… …CCGG… …GGCC… …GGCC… + 6 more infrequent combinations
Overall Marker Frequency
Wilcoxon signed rank test with continuity correction data: frequency difference V = 102870, p-value = 0.0001714 alternative hypothesis: true location is not equal to 0
Population Structure
Population Structure
Population Structure
Spatial Congruence
2 W,k
2 W,j 2 A,j$k 2 A,i$k
2 A,i$j
2 W,i
2 W
=
X 8
2 W,n
2 A
=
X
m6=n
2 A,m$n
Spatial & Genetic Congruence
Epigenetic Categories Potential For Inheritance Long-Term Inheritance
Other
Locally Induced
Population Structure
Conclusions •
Yet Another “Hidden Source of Adaptive Variation”
•
Integrating spatial context differentiates long-term vs induced
Dyer-evol2016.pdf
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