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Nonparallel transcriptional divergence during parallel adaptation
- Source :
- Molecular ecologyREFERENCES. 30(6)
- Publication Year :
- 2021
-
Abstract
- How underlying mechanisms bias evolution toward predictable outcomes remains an area of active debate. In this study, we leveraged phenotypic plasticity and parallel adaptation across independent lineages of Trinidadian guppies (Poecilia reticulata) to assess the predictability of gene expression evolution during parallel adaptation. Trinidadian guppies have repeatedly and independently adapted to high- and low-predation environments in the wild. We combined this natural experiment with a laboratory breeding design to attribute transcriptional variation to the genetic influences of population of origin and developmental plasticity in response to rearing with or without predators. We observed substantial gene expression plasticity, as well as the evolution of expression plasticity itself, across populations. Genes exhibiting expression plasticity within populations were more likely to also differ in expression between populations, with the direction of population differences more likely to be opposite those of plasticity. While we found more overlap than expected by chance in genes differentially expressed between high- and low-predation populations from distinct evolutionary lineages, the majority of differentially expressed genes were not shared between lineages. Our data suggest alternative transcriptional configurations associated with shared phenotypes, highlighting a role for transcriptional flexibility in the parallel phenotypic evolution of a species known for rapid adaptation.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Population
Biology
010603 evolutionary biology
01 natural sciences
Transcriptome
03 medical and health sciences
Genetics
Animals
education
Gene
Ecology, Evolution, Behavior and Systematics
education.field_of_study
Phenotypic plasticity
Poecilia
Phenotype
Adaptation, Physiological
Biological Evolution
030104 developmental biology
Evolutionary biology
Predatory Behavior
Developmental plasticity
Adaptation
Parallel evolution
Subjects
Details
- ISSN :
- 1365294X
- Volume :
- 30
- Issue :
- 6
- Database :
- OpenAIRE
- Journal :
- Molecular ecologyREFERENCES
- Accession number :
- edsair.doi.dedup.....4db98aeab4df93d19d0f712813b3e47a